You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@arrow.apache.org by we...@apache.org on 2017/05/09 03:33:17 UTC
[03/29] arrow-site git commit: Update C++ API docs
http://git-wip-us.apache.org/repos/asf/arrow-site/blob/62afa00b/docs/cpp/type_8h_source.html
----------------------------------------------------------------------
diff --git a/docs/cpp/type_8h_source.html b/docs/cpp/type_8h_source.html
index 1b42b8b..7431a96 100644
--- a/docs/cpp/type_8h_source.html
+++ b/docs/cpp/type_8h_source.html
@@ -38,6 +38,7 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
+ <li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="namespaces.html"><span>Namespaces</span></a></li>
<li><a href="annotated.html"><span>Classes</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
@@ -119,984 +120,1009 @@ var searchBox = new SearchBox("searchBox", "search",false,'Search');
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="status_8h.html">arrow/status.h</a>"</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="type__fwd_8h.html">arrow/type_fwd.h</a>"</span></div>
-<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">arrow/util/macros.h</a>"</span></div>
-<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>"</span></div>
-<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="visitor_8h.html">arrow/visitor.h</a>"</span></div>
-<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
-<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span>arrow {</div>
-<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
-<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// Data types in this library are all *logical*. They can be expressed as</span></div>
-<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// either a primitive physical type (bytes or bits of some fixed size), a</span></div>
-<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// nested type consisting of other data types, or another data type (e.g. a</span></div>
-<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// timestamp encoded as an int64)</span></div>
-<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html"> 41</a></span> <span class="keyword">struct </span><a class="code" href="structarrow_1_1_type.html">Type</a> {</div>
-<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44"> 42</a></span>  <span class="keyword">enum</span> <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">type</a> {</div>
-<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">// A degenerate NULL type represented as 0 bytes/bits</span></div>
-<div class="line"><a name="l00044"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15"> 44</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15">NA</a>,</div>
-<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
-<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// A boolean value represented as 1 bit</span></div>
-<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb4146eedf3fb5a517780000001b30"> 47</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb4146eedf3fb5a517780000001b30">BOOL</a>,</div>
-<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
-<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="comment">// Little-endian integer types</span></div>
-<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab8f52afb784526f800c91de101673b42"> 50</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab8f52afb784526f800c91de101673b42">UINT8</a>,</div>
-<div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44adf9f694eb598f6f8cac8bed3da547d65"> 51</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44adf9f694eb598f6f8cac8bed3da547d65">INT8</a>,</div>
-<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a87c4272d67d3a84ed9ce6c6a9a4a6772"> 52</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a87c4272d67d3a84ed9ce6c6a9a4a6772">UINT16</a>,</div>
-<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a36b3753b92501b60b2740b29d6e17696"> 53</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a36b3753b92501b60b2740b29d6e17696">INT16</a>,</div>
-<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a89620afd46abf8f99b057bd3587a78f0"> 54</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a89620afd46abf8f99b057bd3587a78f0">UINT32</a>,</div>
-<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af8005f162bc422abcee7f1197bf04cf8"> 55</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af8005f162bc422abcee7f1197bf04cf8">INT32</a>,</div>
-<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af1096e3ebb2d7a678fc6ddac24bf7639"> 56</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af1096e3ebb2d7a678fc6ddac24bf7639">UINT64</a>,</div>
-<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af38ec7ec303572a87b11fd48876bc1d0"> 57</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af38ec7ec303572a87b11fd48876bc1d0">INT64</a>,</div>
-<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
-<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// 2-byte floating point value</span></div>
-<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af6ebd198668f2a6c2d79c549f599e896"> 60</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af6ebd198668f2a6c2d79c549f599e896">HALF_FLOAT</a>,</div>
-<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
-<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// 4-byte floating point value</span></div>
-<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a57c54c2b9d1630bc8c99b5fec4c93e58"> 63</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a57c54c2b9d1630bc8c99b5fec4c93e58">FLOAT</a>,</div>
-<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> </div>
-<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="comment">// 8-byte floating point value</span></div>
-<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a75397800ad025678ff7803b543d4a183"> 66</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a75397800ad025678ff7803b543d4a183">DOUBLE</a>,</div>
-<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
-<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// UTF8 variable-length string as List<Char></span></div>
-<div class="line"><a name="l00069"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a864933bd7cdfa63ea75498c34db6545f"> 69</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a864933bd7cdfa63ea75498c34db6545f">STRING</a>,</div>
-<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
-<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// Variable-length bytes (no guarantee of UTF8-ness)</span></div>
-<div class="line"><a name="l00072"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe01"> 72</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe01">BINARY</a>,</div>
-<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
-<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// Fixed-size binary. Each value occupies the same number of bytes</span></div>
-<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179"> 75</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179">FIXED_SIZE_BINARY</a>,</div>
-<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
-<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// int32_t days since the UNIX epoch</span></div>
-<div class="line"><a name="l00078"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a4351aedceb3d92f82cf7ae504476ef30"> 78</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a4351aedceb3d92f82cf7ae504476ef30">DATE32</a>,</div>
-<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
-<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// int64_t milliseconds since the UNIX epoch</span></div>
-<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a17325202e90c23cd194b1698eea87a38"> 81</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a17325202e90c23cd194b1698eea87a38">DATE64</a>,</div>
-<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
-<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// Exact timestamp encoded with int64 since UNIX epoch</span></div>
-<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// Default unit millisecond</span></div>
-<div class="line"><a name="l00085"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1e41dddee4a6410c4d6fe164b36a230e"> 85</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1e41dddee4a6410c4d6fe164b36a230e">TIMESTAMP</a>,</div>
-<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
-<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// Time as signed 32-bit integer, representing either seconds or</span></div>
-<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// milliseconds since midnight</span></div>
-<div class="line"><a name="l00089"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a73fb0fcd2b5d9a4c6071574c73cdf3c5"> 89</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a73fb0fcd2b5d9a4c6071574c73cdf3c5">TIME32</a>,</div>
-<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
-<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// Time as signed 64-bit integer, representing either microseconds or</span></div>
-<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// nanoseconds since midnight</span></div>
-<div class="line"><a name="l00093"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab960cffd22f54b634d9f055f7568d321"> 93</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab960cffd22f54b634d9f055f7568d321">TIME64</a>,</div>
-<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
-<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// YEAR_MONTH or DAY_TIME interval in SQL style</span></div>
-<div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa546143f5b445f6478b7e157546ec3f"> 96</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa546143f5b445f6478b7e157546ec3f">INTERVAL</a>,</div>
-<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> </div>
-<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">// Precision- and scale-based decimal type. Storage type depends on the</span></div>
-<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// parameters.</span></div>
-<div class="line"><a name="l00100"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a014fe7104b592dbd7c70e4e861774a63"> 100</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a014fe7104b592dbd7c70e4e861774a63">DECIMAL</a>,</div>
-<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
-<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// A list of some logical data type</span></div>
-<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210"> 103</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210">LIST</a>,</div>
-<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> </div>
-<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// Struct of logical types</span></div>
-<div class="line"><a name="l00106"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa028b35c4e6a047c0e510ef1b0389ef"> 106</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa028b35c4e6a047c0e510ef1b0389ef">STRUCT</a>,</div>
-<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> </div>
-<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// Unions of logical types</span></div>
-<div class="line"><a name="l00109"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a2fa6d3a8e3947b7d0024304bfb8b5fad"> 109</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a2fa6d3a8e3947b7d0024304bfb8b5fad">UNION</a>,</div>
-<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
-<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// Dictionary aka Category type</span></div>
-<div class="line"><a name="l00112"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a3c38b5820a3de12d71713473550c6280"> 112</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a3c38b5820a3de12d71713473550c6280">DICTIONARY</a></div>
-<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  };</div>
-<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> };</div>
-<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
-<div class="line"><a name="l00116"></a><span class="lineno"><a class="line" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33"> 116</a></span> <span class="keyword">enum class</span> <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> : char { <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33ae44f9e348e41cb272efa87387728571b">DATA</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a1b8a8605d2ff5670a215e55c6645e0d9">OFFSET</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a948495146facadfe8859789036313d79">TYPE</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a9af81702e4d10e3b2a7637a4f1dc30ce">VALIDITY</a> };</div>
-<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
-<div class="line"><a name="l00118"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html"> 118</a></span> <span class="keyword">class </span><a class="code" href="classarrow_1_1_buffer_descr.html">BufferDescr</a> {</div>
-<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#aaf63f66e459f799365e5d3b18caa3cda"> 120</a></span>  <a class="code" href="classarrow_1_1_buffer_descr.html#aaf63f66e459f799365e5d3b18caa3cda">BufferDescr</a>(<a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> <a class="code" href="classarrow_1_1_buffer_descr.html#a5663b9008c58130a99be09bd18ce8c35">type</a>, <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_buffer_descr.html#acd391f5392333a0a08b4d14a6d8ce9be">bit_width</a>) : type_(type), bit_width_(bit_width) {}</div>
-<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
-<div class="line"><a name="l00122"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#a5663b9008c58130a99be09bd18ce8c35"> 122</a></span>  <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> <a class="code" href="classarrow_1_1_buffer_descr.html#a5663b9008c58130a99be09bd18ce8c35">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div>
-<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#acd391f5392333a0a08b4d14a6d8ce9be"> 123</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_buffer_descr.html#acd391f5392333a0a08b4d14a6d8ce9be">bit_width</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> bit_width_; }</div>
-<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
-<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keyword">private</span>:</div>
-<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> type_;</div>
-<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">int</span> bit_width_;</div>
-<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> };</div>
-<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
-<div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html"> 130</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div>
-<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844"> 132</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType</a>(<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <span class="keywordtype">id</span>) : id_(id) {}</div>
-<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_data_type.html">DataType</a>();</div>
-<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
-<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="comment">// Return whether the types are equal</span></div>
-<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">//</span></div>
-<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">// Types that are logically convertable from one to another e.g. List<UInt8></span></div>
-<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// and Binary are NOT equal).</span></div>
-<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a>& other) <span class="keyword">const</span>;</div>
-<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> std::shared_ptr<DataType>& other) <span class="keyword">const</span>;</div>
-<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
-<div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a4afd2527c409023be692e4dd1a49e62e"> 142</a></span>  std::shared_ptr<Field> <a class="code" href="classarrow_1_1_data_type.html#a4afd2527c409023be692e4dd1a49e62e">child</a>(<span class="keywordtype">int</span> i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_[i]; }</div>
-<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
-<div class="line"><a name="l00144"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a8bf35a124bb6e30ccb68872463838237"> 144</a></span>  <span class="keyword">const</span> std::vector<std::shared_ptr<Field>>& <a class="code" href="classarrow_1_1_data_type.html#a8bf35a124bb6e30ccb68872463838237">children</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_; }</div>
-<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
-<div class="line"><a name="l00146"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a3b35207add280a180e9ff64552e51522"> 146</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_data_type.html#a3b35207add280a180e9ff64552e51522">num_children</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(children_.size()); }</div>
-<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
-<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const</span> = 0;</div>
-<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> </div>
-<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keyword">virtual</span> std::string <a class="code" href="namespacearrow_1_1decimal.html#a2f684bd91d804f93e2947c528362fd96">ToString</a>() <span class="keyword">const</span> = 0;</div>
-<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
-<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keyword">virtual</span> std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const</span> = 0;</div>
-<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> </div>
-<div class="line"><a name="l00154"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#ad1213337be376b0858dcb03f29e69ec7"> 154</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <a class="code" href="classarrow_1_1_data_type.html#ad1213337be376b0858dcb03f29e69ec7">id</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> id_; }</div>
-<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div>
-<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">protected</span>:</div>
-<div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#aa2704f1cfc50018d02e109b32f67e422"> 157</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <a class="code" href="classarrow_1_1_data_type.html#aa2704f1cfc50018d02e109b32f67e422">id_</a>;</div>
-<div class="line"><a name="l00158"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a8dd2f042289733133c386463afcea902"> 158</a></span>  std::vector<std::shared_ptr<Field>> <a class="code" href="classarrow_1_1_data_type.html#a8dd2f042289733133c386463afcea902">children_</a>;</div>
-<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
-<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">private</span>:</div>
-<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classarrow_1_1_data_type.html">DataType</a>);</div>
-<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> };</div>
-<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> </div>
-<div class="line"><a name="l00164"></a><span class="lineno"><a class="line" href="namespacearrow.html#a185fd649ed4499e187a83e36e4a3e874"> 164</a></span> <span class="keyword">typedef</span> std::shared_ptr<DataType> <a class="code" href="namespacearrow.html#a185fd649ed4499e187a83e36e4a3e874">TypePtr</a>;</div>
-<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
-<div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_width_type.html"> 166</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div>
-<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">using</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType::DataType</a>;</div>
-<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
-<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span> bit_width() <span class="keyword">const</span> = 0;</div>
-<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div>
-<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const override</span>;</div>
-<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> };</div>
-<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div>
-<div class="line"><a name="l00175"></a><span class="lineno"><a class="line" href="classarrow_1_1_primitive_c_type.html"> 175</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a> {</div>
-<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">using</span> FixedWidthType::FixedWidthType;</div>
-<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> };</div>
-<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div>
-<div class="line"><a name="l00180"></a><span class="lineno"><a class="line" href="classarrow_1_1_integer.html"> 180</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_integer.html">Integer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> {</div>
-<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">using</span> PrimitiveCType::PrimitiveCType;</div>
-<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> is_signed() <span class="keyword">const</span> = 0;</div>
-<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> };</div>
-<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div>
-<div class="line"><a name="l00186"></a><span class="lineno"><a class="line" href="classarrow_1_1_floating_point.html"> 186</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_floating_point.html">FloatingPoint</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> {</div>
-<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">using</span> PrimitiveCType::PrimitiveCType;</div>
-<div class="line"><a name="l00189"></a><span class="lineno"><a class="line" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7aa56a099153ea585f17f6040494c0873ac"> 189</a></span>  <span class="keyword">enum</span> <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7a">Precision</a> { HALF, <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7aa56a099153ea585f17f6040494c0873ac">SINGLE</a>, DOUBLE };</div>
-<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">virtual</span> Precision precision() <span class="keyword">const</span> = 0;</div>
-<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> };</div>
-<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
-<div class="line"><a name="l00193"></a><span class="lineno"><a class="line" href="classarrow_1_1_nested_type.html"> 193</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_nested_type.html">NestedType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div>
-<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">using</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType::DataType</a>;</div>
-<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> };</div>
-<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
-<div class="line"><a name="l00198"></a><span class="lineno"><a class="line" href="classarrow_1_1_no_extra_meta.html"> 198</a></span> <span class="keyword">class </span><a class="code" href="classarrow_1_1_no_extra_meta.html">NoExtraMeta</a> {};</div>
-<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div>
-<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment">// A field is a piece of metadata that includes (for now) a name and a data</span></div>
-<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment">// type</span></div>
-<div class="line"><a name="l00202"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html"> 202</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_field.html">Field</a> {</div>
-<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00204"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#aa8472ff1c83114a35eb201d4d952fca6"> 204</a></span>  <a class="code" href="classarrow_1_1_field.html#aa8472ff1c83114a35eb201d4d952fca6">Field</a>(<span class="keyword">const</span> std::string& name, <span class="keyword">const</span> std::shared_ptr<DataType>& type,</div>
-<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordtype">bool</span> nullable = <span class="keyword">true</span>)</div>
-<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  : name_(name), type_(type), nullable_(nullable) {}</div>
-<div class="line"><a name="l00207"></a><span class="lineno"> 207</span> </div>
-<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_field.html">Field</a>& other) <span class="keyword">const</span>;</div>
-<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> std::shared_ptr<Field>& other) <span class="keyword">const</span>;</div>
-<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div>
-<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  std::string <a class="code" href="namespacearrow_1_1decimal.html#a2f684bd91d804f93e2947c528362fd96">ToString</a>() <span class="keyword">const</span>;</div>
-<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> </div>
-<div class="line"><a name="l00213"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a59e1223d8465fd2b219ebba2575bb384"> 213</a></span>  <span class="keyword">const</span> std::string& <a class="code" href="classarrow_1_1_field.html#a59e1223d8465fd2b219ebba2575bb384">name</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> name_; }</div>
-<div class="line"><a name="l00214"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a51fbf80de80747366bda6ed744ea5a5c"> 214</a></span>  std::shared_ptr<DataType> <a class="code" href="classarrow_1_1_field.html#a51fbf80de80747366bda6ed744ea5a5c">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div>
-<div class="line"><a name="l00215"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a5c004d9c7f9457ef5ad39710e9bc9fc8"> 215</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_field.html#a5c004d9c7f9457ef5ad39710e9bc9fc8">nullable</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> nullable_; }</div>
+<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="key__value__metadata_8h.html">arrow/util/key_value_metadata.h</a>"</span></div>
+<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="macros_8h.html">arrow/util/macros.h</a>"</span></div>
+<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="visibility_8h.html">arrow/util/visibility.h</a>"</span></div>
+<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="visitor_8h.html">arrow/visitor.h</a>"</span></div>
+<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
+<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">namespace </span>arrow {</div>
+<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
+<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// Data types in this library are all *logical*. They can be expressed as</span></div>
+<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">// either a primitive physical type (bytes or bits of some fixed size), a</span></div>
+<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment">// nested type consisting of other data types, or another data type (e.g. a</span></div>
+<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment">// timestamp encoded as an int64)</span></div>
+<div class="line"><a name="l00042"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html"> 42</a></span> <span class="keyword">struct </span><a class="code" href="structarrow_1_1_type.html">Type</a> {</div>
+<div class="line"><a name="l00043"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44"> 43</a></span>  <span class="keyword">enum</span> <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">type</a> {</div>
+<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// A degenerate NULL type represented as 0 bytes/bits</span></div>
+<div class="line"><a name="l00045"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15"> 45</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15">NA</a>,</div>
+<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div>
+<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">// A boolean value represented as 1 bit</span></div>
+<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb4146eedf3fb5a517780000001b30"> 48</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ae4bb4146eedf3fb5a517780000001b30">BOOL</a>,</div>
+<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
+<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="comment">// Little-endian integer types</span></div>
+<div class="line"><a name="l00051"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab8f52afb784526f800c91de101673b42"> 51</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab8f52afb784526f800c91de101673b42">UINT8</a>,</div>
+<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44adf9f694eb598f6f8cac8bed3da547d65"> 52</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44adf9f694eb598f6f8cac8bed3da547d65">INT8</a>,</div>
+<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a87c4272d67d3a84ed9ce6c6a9a4a6772"> 53</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a87c4272d67d3a84ed9ce6c6a9a4a6772">UINT16</a>,</div>
+<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a36b3753b92501b60b2740b29d6e17696"> 54</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a36b3753b92501b60b2740b29d6e17696">INT16</a>,</div>
+<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a89620afd46abf8f99b057bd3587a78f0"> 55</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a89620afd46abf8f99b057bd3587a78f0">UINT32</a>,</div>
+<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af8005f162bc422abcee7f1197bf04cf8"> 56</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af8005f162bc422abcee7f1197bf04cf8">INT32</a>,</div>
+<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af1096e3ebb2d7a678fc6ddac24bf7639"> 57</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af1096e3ebb2d7a678fc6ddac24bf7639">UINT64</a>,</div>
+<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af38ec7ec303572a87b11fd48876bc1d0"> 58</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af38ec7ec303572a87b11fd48876bc1d0">INT64</a>,</div>
+<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> </div>
+<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="comment">// 2-byte floating point value</span></div>
+<div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af6ebd198668f2a6c2d79c549f599e896"> 61</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af6ebd198668f2a6c2d79c549f599e896">HALF_FLOAT</a>,</div>
+<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> </div>
+<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// 4-byte floating point value</span></div>
+<div class="line"><a name="l00064"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a57c54c2b9d1630bc8c99b5fec4c93e58"> 64</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a57c54c2b9d1630bc8c99b5fec4c93e58">FLOAT</a>,</div>
+<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
+<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// 8-byte floating point value</span></div>
+<div class="line"><a name="l00067"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a75397800ad025678ff7803b543d4a183"> 67</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a75397800ad025678ff7803b543d4a183">DOUBLE</a>,</div>
+<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
+<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// UTF8 variable-length string as List<Char></span></div>
+<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a864933bd7cdfa63ea75498c34db6545f"> 70</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a864933bd7cdfa63ea75498c34db6545f">STRING</a>,</div>
+<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div>
+<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// Variable-length bytes (no guarantee of UTF8-ness)</span></div>
+<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe01"> 73</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a442cc62761c7e5a83d26da4d3ed2fe01">BINARY</a>,</div>
+<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
+<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// Fixed-size binary. Each value occupies the same number of bytes</span></div>
+<div class="line"><a name="l00076"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179"> 76</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1b3f48148c5ff94c039d09ff689da179">FIXED_SIZE_BINARY</a>,</div>
+<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
+<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="comment">// int32_t days since the UNIX epoch</span></div>
+<div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a4351aedceb3d92f82cf7ae504476ef30"> 79</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a4351aedceb3d92f82cf7ae504476ef30">DATE32</a>,</div>
+<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
+<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// int64_t milliseconds since the UNIX epoch</span></div>
+<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a17325202e90c23cd194b1698eea87a38"> 82</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a17325202e90c23cd194b1698eea87a38">DATE64</a>,</div>
+<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
+<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// Exact timestamp encoded with int64 since UNIX epoch</span></div>
+<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// Default unit millisecond</span></div>
+<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1e41dddee4a6410c4d6fe164b36a230e"> 86</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a1e41dddee4a6410c4d6fe164b36a230e">TIMESTAMP</a>,</div>
+<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div>
+<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="comment">// Time as signed 32-bit integer, representing either seconds or</span></div>
+<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// milliseconds since midnight</span></div>
+<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a73fb0fcd2b5d9a4c6071574c73cdf3c5"> 90</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a73fb0fcd2b5d9a4c6071574c73cdf3c5">TIME32</a>,</div>
+<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
+<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="comment">// Time as signed 64-bit integer, representing either microseconds or</span></div>
+<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// nanoseconds since midnight</span></div>
+<div class="line"><a name="l00094"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab960cffd22f54b634d9f055f7568d321"> 94</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ab960cffd22f54b634d9f055f7568d321">TIME64</a>,</div>
+<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
+<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="comment">// YEAR_MONTH or DAY_TIME interval in SQL style</span></div>
+<div class="line"><a name="l00097"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa546143f5b445f6478b7e157546ec3f"> 97</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa546143f5b445f6478b7e157546ec3f">INTERVAL</a>,</div>
+<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
+<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="comment">// Precision- and scale-based decimal type. Storage type depends on the</span></div>
+<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// parameters.</span></div>
+<div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a014fe7104b592dbd7c70e4e861774a63"> 101</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a014fe7104b592dbd7c70e4e861774a63">DECIMAL</a>,</div>
+<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> </div>
+<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="comment">// A list of some logical data type</span></div>
+<div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210"> 104</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44ad074f9c02567b5945293b9114f84f210">LIST</a>,</div>
+<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
+<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// Struct of logical types</span></div>
+<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa028b35c4e6a047c0e510ef1b0389ef"> 107</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44aaa028b35c4e6a047c0e510ef1b0389ef">STRUCT</a>,</div>
+<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
+<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="comment">// Unions of logical types</span></div>
+<div class="line"><a name="l00110"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a2fa6d3a8e3947b7d0024304bfb8b5fad"> 110</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a2fa6d3a8e3947b7d0024304bfb8b5fad">UNION</a>,</div>
+<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
+<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// Dictionary aka Category type</span></div>
+<div class="line"><a name="l00113"></a><span class="lineno"><a class="line" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a3c38b5820a3de12d71713473550c6280"> 113</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44a3c38b5820a3de12d71713473550c6280">DICTIONARY</a></div>
+<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  };</div>
+<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> };</div>
+<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
+<div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33"> 117</a></span> <span class="keyword">enum class</span> <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> : char { <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33ae44f9e348e41cb272efa87387728571b">DATA</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a1b8a8605d2ff5670a215e55c6645e0d9">OFFSET</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a948495146facadfe8859789036313d79">TYPE</a>, <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33a9af81702e4d10e3b2a7637a4f1dc30ce">VALIDITY</a> };</div>
+<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div>
+<div class="line"><a name="l00119"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html"> 119</a></span> <span class="keyword">class </span><a class="code" href="classarrow_1_1_buffer_descr.html">BufferDescr</a> {</div>
+<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00121"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#aaf63f66e459f799365e5d3b18caa3cda"> 121</a></span>  <a class="code" href="classarrow_1_1_buffer_descr.html#aaf63f66e459f799365e5d3b18caa3cda">BufferDescr</a>(<a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> <a class="code" href="classarrow_1_1_buffer_descr.html#a5663b9008c58130a99be09bd18ce8c35">type</a>, <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_buffer_descr.html#acd391f5392333a0a08b4d14a6d8ce9be">bit_width</a>) : type_(type), bit_width_(bit_width) {}</div>
+<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
+<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#a5663b9008c58130a99be09bd18ce8c35"> 123</a></span>  <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> <a class="code" href="classarrow_1_1_buffer_descr.html#a5663b9008c58130a99be09bd18ce8c35">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div>
+<div class="line"><a name="l00124"></a><span class="lineno"><a class="line" href="classarrow_1_1_buffer_descr.html#acd391f5392333a0a08b4d14a6d8ce9be"> 124</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_buffer_descr.html#acd391f5392333a0a08b4d14a6d8ce9be">bit_width</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> bit_width_; }</div>
+<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div>
+<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keyword">private</span>:</div>
+<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="namespacearrow.html#af37e6996db0efe38caab9271161bcc33">BufferType</a> type_;</div>
+<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordtype">int</span> bit_width_;</div>
+<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> };</div>
+<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
+<div class="line"><a name="l00131"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html"> 131</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div>
+<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844"> 133</a></span>  <span class="keyword">explicit</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType</a>(<a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <span class="keywordtype">id</span>) : id_(id) {}</div>
+<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">virtual</span> ~<a class="code" href="classarrow_1_1_data_type.html">DataType</a>();</div>
+<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> </div>
+<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="comment">// Return whether the types are equal</span></div>
+<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">//</span></div>
+<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="comment">// Types that are logically convertable from one to another e.g. List<UInt8></span></div>
+<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="comment">// and Binary are NOT equal).</span></div>
+<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a>& other) <span class="keyword">const</span>;</div>
+<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> std::shared_ptr<DataType>& other) <span class="keyword">const</span>;</div>
+<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div>
+<div class="line"><a name="l00143"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a4afd2527c409023be692e4dd1a49e62e"> 143</a></span>  std::shared_ptr<Field> <a class="code" href="classarrow_1_1_data_type.html#a4afd2527c409023be692e4dd1a49e62e">child</a>(<span class="keywordtype">int</span> i)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_[i]; }</div>
+<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div>
+<div class="line"><a name="l00145"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a8bf35a124bb6e30ccb68872463838237"> 145</a></span>  <span class="keyword">const</span> std::vector<std::shared_ptr<Field>>& <a class="code" href="classarrow_1_1_data_type.html#a8bf35a124bb6e30ccb68872463838237">children</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> children_; }</div>
+<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> </div>
+<div class="line"><a name="l00147"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a3b35207add280a180e9ff64552e51522"> 147</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_data_type.html#a3b35207add280a180e9ff64552e51522">num_children</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(children_.size()); }</div>
+<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
+<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">virtual</span> <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const</span> = 0;</div>
+<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
+<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">virtual</span> std::string <a class="code" href="namespacearrow_1_1decimal.html#a2f684bd91d804f93e2947c528362fd96">ToString</a>() <span class="keyword">const</span> = 0;</div>
+<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
+<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keyword">virtual</span> std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const</span> = 0;</div>
+<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
+<div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#ad1213337be376b0858dcb03f29e69ec7"> 155</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <a class="code" href="classarrow_1_1_data_type.html#ad1213337be376b0858dcb03f29e69ec7">id</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> id_; }</div>
+<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> </div>
+<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keyword">protected</span>:</div>
+<div class="line"><a name="l00158"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#aa2704f1cfc50018d02e109b32f67e422"> 158</a></span>  <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> <a class="code" href="classarrow_1_1_data_type.html#aa2704f1cfc50018d02e109b32f67e422">id_</a>;</div>
+<div class="line"><a name="l00159"></a><span class="lineno"><a class="line" href="classarrow_1_1_data_type.html#a8dd2f042289733133c386463afcea902"> 159</a></span>  std::vector<std::shared_ptr<Field>> <a class="code" href="classarrow_1_1_data_type.html#a8dd2f042289733133c386463afcea902">children_</a>;</div>
+<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div>
+<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keyword">private</span>:</div>
+<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="macros_8h.html#af8df3547bfde53a5acb93e2607b0034a">DISALLOW_COPY_AND_ASSIGN</a>(<a class="code" href="classarrow_1_1_data_type.html">DataType</a>);</div>
+<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> };</div>
+<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
+<div class="line"><a name="l00165"></a><span class="lineno"><a class="line" href="namespacearrow.html#a185fd649ed4499e187a83e36e4a3e874"> 165</a></span> <span class="keyword">typedef</span> std::shared_ptr<DataType> <a class="code" href="namespacearrow.html#a185fd649ed4499e187a83e36e4a3e874">TypePtr</a>;</div>
+<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
+<div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="classarrow_1_1_fixed_width_type.html"> 167</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div>
+<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keyword">using</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType::DataType</a>;</div>
+<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
+<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span> bit_width() <span class="keyword">const</span> = 0;</div>
+<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div>
+<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  std::vector<BufferDescr> GetBufferLayout() <span class="keyword">const override</span>;</div>
+<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> };</div>
+<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
+<div class="line"><a name="l00176"></a><span class="lineno"><a class="line" href="classarrow_1_1_primitive_c_type.html"> 176</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_fixed_width_type.html">FixedWidthType</a> {</div>
+<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">using</span> FixedWidthType::FixedWidthType;</div>
+<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> };</div>
+<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div>
+<div class="line"><a name="l00181"></a><span class="lineno"><a class="line" href="classarrow_1_1_integer.html"> 181</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_integer.html">Integer</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> {</div>
+<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keyword">using</span> PrimitiveCType::PrimitiveCType;</div>
+<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> is_signed() <span class="keyword">const</span> = 0;</div>
+<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> };</div>
+<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
+<div class="line"><a name="l00187"></a><span class="lineno"><a class="line" href="classarrow_1_1_floating_point.html"> 187</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_floating_point.html">FloatingPoint</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_primitive_c_type.html">PrimitiveCType</a> {</div>
+<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keyword">using</span> PrimitiveCType::PrimitiveCType;</div>
+<div class="line"><a name="l00190"></a><span class="lineno"><a class="line" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7aa56a099153ea585f17f6040494c0873ac"> 190</a></span>  <span class="keyword">enum</span> <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7a">Precision</a> { HALF, <a class="code" href="classarrow_1_1_floating_point.html#aa585c0815b471db6d35d916d9e887b7aa56a099153ea585f17f6040494c0873ac">SINGLE</a>, DOUBLE };</div>
+<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keyword">virtual</span> Precision precision() <span class="keyword">const</span> = 0;</div>
+<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> };</div>
+<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> </div>
+<div class="line"><a name="l00194"></a><span class="lineno"><a class="line" href="classarrow_1_1_nested_type.html"> 194</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_nested_type.html">NestedType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a> {</div>
+<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keyword">using</span> <a class="code" href="classarrow_1_1_data_type.html#a1b8a7ece05983649f67396177f40e844">DataType::DataType</a>;</div>
+<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> };</div>
+<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div>
+<div class="line"><a name="l00199"></a><span class="lineno"><a class="line" href="classarrow_1_1_no_extra_meta.html"> 199</a></span> <span class="keyword">class </span><a class="code" href="classarrow_1_1_no_extra_meta.html">NoExtraMeta</a> {};</div>
+<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> </div>
+<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment">// A field is a piece of metadata that includes (for now) a name and a data</span></div>
+<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment">// type</span></div>
+<div class="line"><a name="l00203"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html"> 203</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_field.html">Field</a> {</div>
+<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keyword">public</span>:</div>
+<div class="line"><a name="l00205"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a0bdd65f719b41328145aaeb9730d5b3c"> 205</a></span>  <a class="code" href="classarrow_1_1_field.html#a0bdd65f719b41328145aaeb9730d5b3c">Field</a>(<span class="keyword">const</span> std::string& name, <span class="keyword">const</span> std::shared_ptr<DataType>& type,</div>
+<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordtype">bool</span> nullable = <span class="keyword">true</span>,</div>
+<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">const</span> std::shared_ptr<const KeyValueMetadata>& metadata = <span class="keyword">nullptr</span>)</div>
+<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  : name_(name), type_(type), nullable_(nullable), metadata_(metadata) {}</div>
+<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div>
+<div class="line"><a name="l00210"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a1231a7eec52567079b8d3d285eb0d7bd"> 210</a></span>  std::shared_ptr<const KeyValueMetadata> <a class="code" href="classarrow_1_1_field.html#a1231a7eec52567079b8d3d285eb0d7bd">metadata</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> metadata_; }</div>
+<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> </div>
+<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> AddMetadata(<span class="keyword">const</span> std::shared_ptr<const KeyValueMetadata>& metadata,</div>
+<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  std::shared_ptr<Field>* out) <span class="keyword">const</span>;</div>
+<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> </div>
+<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  std::shared_ptr<Field> RemoveMetadata() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span> </div>
-<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">private</span>:</div>
-<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="comment">// Field name</span></div>
-<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  std::string name_;</div>
-<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> </div>
-<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="comment">// The field's data type</span></div>
-<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  std::shared_ptr<DataType> type_;</div>
-<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> </div>
-<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="comment">// Fields can be nullable</span></div>
-<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordtype">bool</span> nullable_;</div>
-<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> };</div>
-<div class="line"><a name="l00227"></a><span class="lineno"> 227</span> </div>
-<div class="line"><a name="l00228"></a><span class="lineno"><a class="line" href="namespacearrow.html#a241dad83bf0006ee8b278d57d29dc76d"> 228</a></span> <span class="keyword">typedef</span> std::shared_ptr<Field> <a class="code" href="namespacearrow.html#a241dad83bf0006ee8b278d57d29dc76d">FieldPtr</a>;</div>
+<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> <a class="code" href="classarrow_1_1_field.html">Field</a>& other) <span class="keyword">const</span>;</div>
+<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordtype">bool</span> Equals(<span class="keyword">const</span> std::shared_ptr<Field>& other) <span class="keyword">const</span>;</div>
+<div class="line"><a name="l00219"></a><span class="lineno"> 219</span> </div>
+<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  std::string <a class="code" href="namespacearrow_1_1decimal.html#a2f684bd91d804f93e2947c528362fd96">ToString</a>() <span class="keyword">const</span>;</div>
+<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> </div>
+<div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a59e1223d8465fd2b219ebba2575bb384"> 222</a></span>  <span class="keyword">const</span> std::string& <a class="code" href="classarrow_1_1_field.html#a59e1223d8465fd2b219ebba2575bb384">name</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> name_; }</div>
+<div class="line"><a name="l00223"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a51fbf80de80747366bda6ed744ea5a5c"> 223</a></span>  std::shared_ptr<DataType> <a class="code" href="classarrow_1_1_field.html#a51fbf80de80747366bda6ed744ea5a5c">type</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> type_; }</div>
+<div class="line"><a name="l00224"></a><span class="lineno"><a class="line" href="classarrow_1_1_field.html#a5c004d9c7f9457ef5ad39710e9bc9fc8"> 224</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classarrow_1_1_field.html#a5c004d9c7f9457ef5ad39710e9bc9fc8">nullable</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> nullable_; }</div>
+<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
+<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keyword">private</span>:</div>
+<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="comment">// Field name</span></div>
+<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  std::string name_;</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> </div>
-<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="keyword">template</span> <<span class="keyword">typename</span> DERIVED, <span class="keyword">typename</span> BASE, Type::type TYPE_ID, <span class="keyword">typename</span> C_TYPE></div>
-<div class="line"><a name="l00231"></a><span class="lineno"><a class="line" href="classarrow_1_1_c_type_impl.html"> 231</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_c_type_impl.html">CTypeImpl</a> : <span class="keyword">public</span> BASE {</div>
-<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00233"></a><span class="lineno"><a class="line" href="classarrow_1_1_c_type_impl.html#a97e086324dde930b845360a73fcd528e"> 233</a></span>  <span class="keyword">using</span> <a class="code" href="classarrow_1_1_c_type_impl.html#a97e086324dde930b845360a73fcd528e">c_type</a> = C_TYPE;</div>
-<div class="line"><a name="l00234"></a><span class="lineno"><a class="line" href="classarrow_1_1_c_type_impl.html#a0dcafdaa71e73c4eb94e21719ae78674"> 234</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = TYPE_ID;</div>
+<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="comment">// The field's data type</span></div>
+<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  std::shared_ptr<DataType> type_;</div>
+<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
+<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// Fields can be nullable</span></div>
+<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordtype">bool</span> nullable_;</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div>
-<div class="line"><a name="l00236"></a><span class="lineno"><a class="line" href="classarrow_1_1_c_type_impl.html#a28c744e35bad1af5ecb0f4aa4fbe65c8"> 236</a></span>  <a class="code" href="classarrow_1_1_c_type_impl.html#a28c744e35bad1af5ecb0f4aa4fbe65c8">CTypeImpl</a>() : BASE(TYPE_ID) {}</div>
-<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div>
-<div class="line"><a name="l00238"></a><span class="lineno"><a class="line" href="classarrow_1_1_c_type_impl.html#a2af6841474bc3132d9d8dbaea9260aff"> 238</a></span>  <span class="keywordtype">int</span> <a class="code" href="classarrow_1_1_c_type_impl.html#a2af6841474bc3132d9d8dbaea9260aff">bit_width</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> <span class="keyword">static_cast<</span><span class="keywordtype">int</span><span class="keyword">></span>(<span class="keyword">sizeof</span>(C_TYPE) * CHAR_BIT); }</div>
+<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// The field's metadata, if any</span></div>
+<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  std::shared_ptr<const KeyValueMetadata> metadata_;</div>
+<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> };</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
-<div class="line"><a name="l00240"></a><span class="lineno"><a class="line" href="classarrow_1_1_c_type_impl.html#a123343dd1f5a4d4ec351ab5cc7df41c8"> 240</a></span>  <a class="code" href="classarrow_1_1_status.html">Status</a> <a class="code" href="classarrow_1_1_c_type_impl.html#a123343dd1f5a4d4ec351ab5cc7df41c8">Accept</a>(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor)<span class="keyword"> const override </span>{</div>
-<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">return</span> visitor-><a class="code" href="classarrow_1_1_type_visitor.html#a7c55beece55f9c82a191a3667f2ca582">Visit</a>(*static_cast<const DERIVED*>(<span class="keyword">this</span>));</div>
-<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div>
-<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
-<div class="line"><a name="l00244"></a><span class="lineno"><a class="line" href="classarrow_1_1_c_type_impl.html#a5a7d9ac092170e7c56217c7855ce92df"> 244</a></span>  std::string <a class="code" href="classarrow_1_1_c_type_impl.html#a5a7d9ac092170e7c56217c7855ce92df">ToString</a>()<span class="keyword"> const override </span>{ <span class="keywordflow">return</span> std::string(DERIVED::name()); }</div>
-<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> };</div>
-<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> </div>
-<div class="line"><a name="l00247"></a><span class="lineno"><a class="line" href="classarrow_1_1_null_type.html"> 247</a></span> <span class="keyword">class </span><a class="code" href="visibility_8h.html#a7060b7b5f11fc11ce77a4d30b37619ef">ARROW_EXPORT</a> <a class="code" href="classarrow_1_1_null_type.html">NullType</a> : <span class="keyword">public</span> <a class="code" href="classarrow_1_1_data_type.html">DataType</a>, <span class="keyword">public</span> <a class="code" href="classarrow_1_1_no_extra_meta.html">NoExtraMeta</a> {</div>
-<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keyword">public</span>:</div>
-<div class="line"><a name="l00249"></a><span class="lineno"><a class="line" href="classarrow_1_1_null_type.html#a9ffc27408dc7cd6f6da501d2e729e2f2"> 249</a></span>  <span class="keyword">static</span> constexpr <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44">Type::type</a> type_id = <a class="code" href="structarrow_1_1_type.html#a00a041cb19a3be373da8eec7d4bf1f44af46d8600b17dd993097e0875a46e0b15">Type::NA</a>;</div>
-<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> </div>
-<div class="line"><a name="l00251"></a><span class="lineno"><a class="line" href="classarrow_1_1_null_type.html#a283c0b240ce951e478295ed0091cac24"> 251</a></span>  <a class="code" href="classarrow_1_1_null_type.html#a283c0b240ce951e478295ed0091cac24">NullType</a>() : <a class="code" href="classarrow_1_1_data_type.html">DataType</a>(<a class="code" href="structarrow_1_1_type.html">Type</a>::NA) {}</div>
-<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> </div>
-<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <a class="code" href="classarrow_1_1_status.html">Status</a> Accept(<a class="code" href="classarrow_1_1_type_visitor.html">TypeVisitor</a>* visitor) <span class="keyword">const override</span>;</div>
-<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  std::string <a class="code" href="namespacearro
<TRUNCATED>