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Posted to commits@juneau.apache.org by ja...@apache.org on 2016/08/01 00:07:57 UTC
[08/51] [partial] incubator-juneau git commit: Initial Juno contents
from IBM JazzHub repo
http://git-wip-us.apache.org/repos/asf/incubator-juneau/blob/7e4f63e6/com.ibm.team.juno.releng/bin/core/com/ibm/juno/core/urlencoding/package.html
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+<!DOCTYPE HTML>
+<!--
+ Licensed Materials - Property of IBM
+ (c) Copyright IBM Corporation 2014. All Rights Reserved.
+
+ Note to U.S. Government Users Restricted Rights:
+ Use, duplication or disclosure restricted by GSA ADP Schedule
+ Contract with IBM Corp.
+ -->
+<html>
+<head>
+ <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+ <style type="text/css">
+ /* For viewing in Page Designer */
+ @IMPORT url("../../../../../../javadoc.css");
+
+ /* For viewing in REST interface */
+ @IMPORT url("../htdocs/javadoc.css");
+ body {
+ margin: 20px;
+ }
+ </style>
+ <script>
+ /* Replace all @code and @link tags. */
+ window.onload = function() {
+ document.body.innerHTML = document.body.innerHTML.replace(/\{\@code ([^\}]+)\}/g, '<code>$1</code>');
+ document.body.innerHTML = document.body.innerHTML.replace(/\{\@link (([^\}]+)\.)?([^\.\}]+)\}/g, '<code>$3</code>');
+ }
+ </script>
+</head>
+<body>
+<p>URL encoding serialization and parsing support</p>
+<script>
+ function toggle(x) {
+ var div = x.nextSibling;
+ while (div != null && div.nodeType != 1)
+ div = div.nextSibling;
+ if (div != null) {
+ var d = div.style.display;
+ if (d == 'block' || d == '') {
+ div.style.display = 'none';
+ x.className += " closed";
+ } else {
+ div.style.display = 'block';
+ x.className = x.className.replace(/(?:^|\s)closed(?!\S)/g , '' );
+ }
+ }
+ }
+</script>
+
+<a id='TOC'></a><h5 class='toc'>Table of Contents</h5>
+<ol class='toc'>
+ <li><p><a class='doclink' href='#Overview'>URL encoding support overview</a></p>
+ <ol>
+ <li><p><a class='doclink' href='#OverviewExample'>Example</a></p>
+ </ol>
+ <li><p><a class='doclink' href='#UrlEncodingSerializer'>UrlEncodingSerializer and UonSerializer classes</a></p>
+ <ol>
+ <li><p><a class='doclink' href='#BeanAnnotations'>@Bean and @BeanProperty annotations</a></p>
+ <li><p><a class='doclink' href='#Collections'>Collections</a></p>
+ <li><p><a class='doclink' href='#Recursion'> Non-tree models and recursion detection</a></p>
+ <li><p><a class='doclink' href='#SerializerConfigurableProperties'>Configurable properties</a></p>
+ <li><p><a class='doclink' href='#SerializerOtherNotes'>Other notes</a></p>
+ </ol>
+ <li><p><a class='doclink' href='#UrlEncodingParser'>UrlEncodingParser and UonParser classes</a></p>
+ <ol>
+ <li><p><a class='doclink' href='#GenericParsing'>Parsing into generic POJO models</a></p>
+ <li><p><a class='doclink' href='#ParserConfigurableProperties'>Configurable properties</a></p>
+ <li><p><a class='doclink' href='#ParserOtherNotes'>Other notes</a></p>
+ </ol>
+ <li><p><a class='doclink' href='#RestApiSupport'>REST API support</a></p>
+ <ol>
+ <li><p><a class='doclink' href='#RestServerSupport'>REST server support</a></p>
+ <ol>
+ <li><p><a class='doclink' href='#RestServletDefault'>Using RestServletDefault</a></p>
+ <li><p><a class='doclink' href='#RestServlet'>Using RestServlet with annotations</a></p>
+ <li><p><a class='doclink' href='#DefaultProvider'>Using JAX-RS DefaultProvider</a></p>
+ <li><p><a class='doclink' href='#BaseProvider'>Using JAX-RS BaseProvider with annotations</a></p>
+ </ol>
+ <li><p><a class='doclink' href='#RestClientSupport'>REST client support</a></p>
+ </ol>
+</ol>
+
+<!-- ======================================================================================================== -->
+<a id="Overview"></a>
+<h2 class='topic' onclick='toggle(this)'>1 - URL encoding support overview</h2>
+<div class='topic'>
+ <p>
+ Juno supports converting arbitrary POJOs to and from URL-encoded strings using ultra-efficient serializers and parsers.<br>
+ The serializer converts POJOs directly to URL-encoded strings without the need for intermediate DOM objects using a highly-efficient state machine.<br>
+ Likewise, the parser creates POJOs directly from URL-encoded strings without the need for intermediate DOM objects.
+ </p>
+ <p>
+ Juno uses UON (URL-Encoded Object Notation) for representing POJOs.
+ The UON specification can be found <a href='doc-files/rfc_uon.txt'>here</a>.
+ </p>
+ <p>
+ Juno can serialize and parse instances of any of the following POJO types:
+ </p>
+ <ul>
+ <li>Java primitives and primitive objects (e.g. <code>String</code>, <code>Integer</code>, <code>Boolean</code>, <code>Float</code>).
+ <li>Java Collections Framework objects (e.g. <code>HashSet</code>, <code>TreeMap</code>) containing anything on this list.
+ <li>Multi-dimensional arrays of any type on this list.
+ <li>Java Beans with properties of any type on this list.
+ <li>Classes with standard transformations to and from <code>Strings</code> (e.g. classes containing <code>toString()</code>, <code>fromString()</code>, <code>valueOf()</code>, <code>constructor(String)</code>).
+ <li>Non-serializable classes and properties with associated <code>PojoFilters</code> that convert them to serializable forms.
+ </ul>
+ <p>
+ Refer to <a href='../package-summary.html#PojoCategories' class='doclink'>POJO Categories</a> for a complete definition of supported POJOs.
+ </p>
+ <h6 class='topic'>Prerequisites</h6>
+ <p>
+ The Juno URL-encoding serialization and parsing support does not require any external prerequisites.
+ It only requires Java 1.6 or above.
+ </p>
+
+ <!-- ======================================================================================================== -->
+ <a id="OverviewExample"></a>
+ <h3 class='topic' onclick='toggle(this)'>1.1 - URL-encoding support overview - example</h3>
+ <div class='topic'>
+ <p>
+ The example shown here is from the Address Book resource located in the <code>com.ibm.juno.sample.war</code> application.<br>
+ The POJO model consists of a <code>List</code> of <code>Person</code> beans, with each <code>Person</code> containing
+ zero or more <code>Address</code> beans.
+ </p>
+ <p>
+ When you point a browser at <code>/sample/addressBook/people/1</code>, the POJO is rendered as HTML:
+ </p>
+ <img class='bordered' src="doc-files/Example_HTML.png">
+ <p>
+ By appending <code>?Accept=application/x-www-form-urlencoded&plainText=true</code> to the URL, you can view the data as a URL-encoded string:
+ </p>
+ <img class='bordered' src="doc-files/Example_UrlEncoding.png">
+
+ <p>
+ Juno supports two kinds of serialization:
+ </p>
+ <ul>
+ <li>Construction of full URL query parameter strings (e.g. <code>&key=value</code> pairs) from beans and maps.
+ <li>Construction of URL query parameter value strings (e.g. just the <code>value</code> portion of <code>&key=value</code> pairs) from any POJO.
+ </ul>
+ <p>
+ Top-level beans and maps can serialized as key/value pairs as shown below:
+ </p>
+ <h6 class='figure'>Example: A bean with 2 string properties, 'foo' and 'baz', serialized to a query string</h6>
+ <p class='bcode'> http://localhost/sample?<xa>foo</xa>=<xs>bar</xs>&<xa>baz</xa>=<xs>bing</xs></p>
+ <p>
+ Lower-level beans and maps are also serialized as key/value pairs, but are surrounded with a <js>"$o(...)"</js> construct to denote an object mapping,
+ and uses a comma as the parameter delimiter instead of <js>"&"</js>.<br>
+ </p>
+ <h6 class='figure'>Example: A bean serialized as a query parameter value.</h6>
+ <p class='bcode'> http://localhost/sample?<xa>a1</xa>=$o(<xa>foo</xa>=<xs>bar</xs>,<xa>baz</xa>=<xs>bing</xs>)</p>
+ <p>
+ The UON specification defines two separate modes:
+ </p>
+ <ul>
+ <li>Strict mode - Serialized model is fully equivalent to JSON and can be losslessly converted back and forth into a JSON model without additional information.
+ <li>Lax mode - A shortened form that excludes data type information. Ideal if the data types of values are fixed and already known by the parser.
+ </ul>
+ <table class='styled' style='border-collapse: collapse;'>
+ <tr><th>Java type</th><th>JSON equivalent</th><th>Strict syntax</th><th>Lax syntax</th></tr>
+ <tr>
+ <td>Maps/beans</td>
+ <td>OBJECT</td>
+ <td class='code'><xa>a1</xa>=$o(<xa>b1</xa>=<xs>x1</xs>,<xa>b2</xa>=<xs>x2</xs>)<br><xa>a1</xa>=$o(<xa>b1</xa>=$o(<xa>c1</xa>=<xs>x1</xs>,<xa>c2</xa>=<xs>x2</xs>))</td>
+ <td class='code'><xa>a1</xa>=(<xa>b1</xa>=<xs>x1</xs>,<xa>b2</xa>=<xs>x2</xs>)<br><xa>a1</xa>=(<xa>b1</xa>=(<xa>c1</xa>=<xs>x1</xs>,<xa>c2</xa>=<xs>x2</xs>))</td>
+ </tr>
+ <tr>
+ <td>Collections/arrays</td>
+ <td>ARRAY</td>
+ <td class='code'><xa>a1</xa>=$a(<xs>x1</xs>,<xs>x2</xs>)<br><xa>a1</xa>=$a($a(<xs>x1</xs>,<xs>x2</xs>),$a(<xs>x3</xs>,<xs>x4</xs>))<br><xa>a1</xa>=$a($o(<xa>b1</xa>=<xs>x1</xs>,<xa>b2</xa>=<xs>x2</xs>),$o(<xa>c1</xa>=<xs>x1</xs>,<xa>c2</xa>=<xs>x2</xs>))</td>
+ <td class='code'><xa>a1</xa>=(<xs>x1</xs>,<xs>x2</xs>)<br><xa>a1</xa>=((<xs>x1</xs>,<xs>x2</xs>),(<xs>x3</xs>,<xs>x4</xs>))<br><xa>a1</xa>=((<xa>b1</xa>=<xs>x1</xs>,<xa>b2</xa>=<xs>x2</xs>),(<xa>c1</xa>=<xs>x1</xs>,<xa>c2</xa>=<xs>x2</xs>))</td>
+ </tr>
+ <tr>
+ <td>Booleans</td>
+ <td>BOOLEAN</td>
+ <td class='code'><xa>a1</xa>=$b(<xs>true</xs>)&<xa>a2</xa>=$b(<xs>false</xs>)</td>
+ <td class='code'><xa>a1</xa>=<xs>true</xs>&<xa>a2</xa>=<xs>false</xs></td>
+ </tr>
+ <tr>
+ <td>int/float/double/...</td>
+ <td>NUMBER</td>
+ <td class='code'><xa>a1</xa>=$n(<xs>123</xs>)&<xa>a2</xa>=$n(<xs>1.23e1</xs>)</td>
+ <td class='code'><xa>a1</xa>=<xs>123</xs>&<xa>a2</xa>=<xs>1.23e1</xs></td>
+ </tr>
+ <tr>
+ <td>null</td>
+ <td>NULL</td>
+ <td class='code'><xa>a1</xa>=<xs>%00</xs></td>
+ <td class='code'><xa>a1</xa>=<xs>%00</xs></td>
+ </tr>
+ <tr>
+ <td>String</td>
+ <td>STRING</td>
+ <td class='code'><xa>a1</xa>=<xs>foobar</xs></td>
+ <td class='code'><xa>a1</xa>=<xs>foobar</xs></td>
+ </tr>
+ </table>
+ <p>
+ Refer to the <a href='doc-files/rfc_uon.txt'>UON specification</a> for a complete set of syntax rules.
+ <p>
+ Filters can be used to convert non-serializable POJOs into serializable forms, such as converting
+ <code>Calendar</code> object to ISO8601 strings, or <code><jk>byte</jk>[]</code> arrays to Base-64 encoded strings.<br>
+ These filters can be associated at various levels:
+ </p>
+ <ul>
+ <li>On serializer and parser instances to handle all objects of the class type globally.
+ <li>On classes through the <code><ja>@Bean</ja></code> annotation.
+ <li>On bean properties through the <code><ja>@BeanProperty</ja></code> annotations.
+ </ul>
+ <h6 class='figure'>Example: A serialized Calendar object using <code>CalendarFilter.RFC2822DTZ</code> filter.</h6>
+ <p class='bcode'> http://localhost/sample?<xa>a1=<js>Sun~,+03+Mar+1901+09:05:06+GMT</js></p>
+ <p>
+ For more information about filters, refer to {@link com.ibm.juno.core.filter}.
+ </p>
+ </div>
+
+</div>
+
+<!-- ======================================================================================================== -->
+<a id="UrlEncodingSerializer"></a>
+<h2 class='topic' onclick='toggle(this)'>2 - UrlEncodingSerializer and UonSerializer classes</h2>
+<div class='topic'>
+ <p>
+ {@link com.ibm.juno.core.urlencoding.UrlEncodingSerializer} and {@link com.ibm.juno.core.urlencoding.UonSerializer} classes are used to convert POJOs to URL-encoded strings.<br>
+ The <code>UonSerializer</code> class converts parameter values to UON notation.
+ The <code>UrlEncodingSerializer</code> class converts a POJO to key/value URL-Encoded pairs using <code>UonSerializer</code> to serialize the values.
+ If you're trying to construct complete URL-Encoded entities, use <code>UrlEncodingSerializer</code>.
+ If you're constructing your own key/value pairs, use <code>UonSerializer</code>.
+ </p>
+ <p>
+ The serializers include several configurable settings.<br>
+ Static reusable instances of serializers are provided with commonly-used settings:
+ </p>
+ <ul>
+ <li>{@link com.ibm.juno.core.urlencoding.UrlEncodingSerializer#DEFAULT} - All default settings, strict mode.
+ <li>{@link com.ibm.juno.core.urlencoding.UrlEncodingSerializer#DEFAULT_SIMPLE} - All default settings, lax mode.
+ <li>{@link com.ibm.juno.core.urlencoding.UrlEncodingSerializer#DEFAULT_READABLE} - Use whitespace and indentation for readability.
+ <li>{@link com.ibm.juno.core.urlencoding.UonSerializer#DEFAULT} - All default settings, strict mode.
+ <li>{@link com.ibm.juno.core.urlencoding.UonSerializer#DEFAULT_SIMPLE} - All default settings, lax mode.
+ <li>{@link com.ibm.juno.core.urlencoding.UonSerializer#DEFAULT_READABLE} - Use whitespace and indentation for readability.
+ <li>{@link com.ibm.juno.core.urlencoding.UonSerializer#DEFAULT_ENCODING} - Same as DEFAULT, but use URL-Encoding on special characters.
+ <li>{@link com.ibm.juno.core.urlencoding.UonSerializer#DEFAULT_SIMPLE_ENCODING} - Same as DEFAULT_SIMPLE, but use URL-Encoding on special characters.
+ </ul>
+ <p>
+ The general guidelines on which serializer to use is:
+ </p>
+ <ul>
+ <li>Use strict mode serializers if the data types of the value are not known on the parsing side, and this
+ information needs to be preserved during transmission.
+ <li>Use lax mode serializers if the data types of the value are known on the parsing side.
+ For example, if you're serializing/parsing beans, lax mode is usually sufficient since the data types
+ can be inferred from the bean properties.
+ <li>Use encoding serializers when you're using the results to construct a URI yourself, and therefore
+ need invalid URI characters to be encoded.
+ <li>Use unencoding serializers when you're creating parameter values and passing them off to some other
+ utility class that will itself encode invalid URI characters.
+ <li>Use the readable serializer for debugging purposes.
+ </ul>
+
+ <h6 class='topic'>Notes about examples</h6>
+ <p>
+ The examples shown in this document will use default strict settings.<br>
+ For brevity, the examples will use public fields instead of getters/setters to reduce the size of the examples.<br>
+ In the real world, you'll typically want to use standard bean getters and setters.
+ </p>
+ <p>
+ To start off simple, we'll begin with the following simplified bean and build upon it.
+ </p>
+ <p class='bcode'>
+ <jk>public class</jk> Person {
+ <jc>// Bean properties</jc>
+ <jk>public int</jk> <jf>id</jf>;
+ <jk>public</jk> String <jf>name</jf>;
+
+ <jc>// Bean constructor (needed by parser)</jc>
+ <jk>public</jk> Person() {}
+
+ <jc>// Normal constructor</jc>
+ <jk>public</jk> Person(<jk>int</jk> id, String name) {
+ <jk>this</jk>.<jf>id</jf> = id;
+ <jk>this</jk>.<jf>name</jf> = name;
+ }
+ }
+ </p>
+ <p>
+ The following code shows how to convert this to a URL-encoded value:
+ </p>
+ <p class='bcode'>
+ <jc>// Use serializer with readable output, simple mode.</jc>
+ UonSerializer s = UonSerializer.<jsf>DEFAULT</jsf>;
+
+ <jc>// Create our bean.</jc>
+ Person p = <jk>new</jk> Person(1, <js>"John Smith"</js>);
+
+ <jc>// Serialize the bean to URL-encoded parameter value.</jc>
+ String urlencoded = s.serialize(p);
+ </p>
+ <p>
+ The code above produces the following output:
+ </p>
+ <p class='bcode'>
+ $o(<xa>id</xa>=$n(<xs>1</xs>),<xa>name</xa>=<xs>John+Smith</xs>)
+ </p>
+ <p>
+ The {@link com.ibm.juno.core.urlencoding.UrlEncodingSerializer} class converts
+ maps and beans into top-level query parameter strings.
+ </p>
+ <p class='bcode'>
+ <jc>// Use serializer with readable output, simple mode.</jc>
+ UrlEncodingSerializer s = UrlEncodingSerializer.<jsf>DEFAULT</jsf>;
+
+ <jc>// Serialize the bean to URL-encoded query string.</jc>
+ String urlencoded = s.serialize(p);
+ </p>
+ <p>
+ The code above produces the following output:
+ </p>
+ <p class='bcode'>
+ <xa>id</xa>=$n(<xs>1</xs>)&<xa>name</xa>=<xs>John+Smith</xs>
+ </p>
+ <p>
+ The general method guidelines are as follows:
+ </p>
+ <ul>
+ <li>Use <code>UonSerializer</code> to create individual query parameter values.
+ <li>Use <code>UrlEncodingSerializer</code> to create complete URL-encoded query strings.
+ </ul>
+ <p>
+ By default, the <code>UrlEncodingSerializer</code> class will URL-Encode special characters, and the <code>UonSerializer</code> will NOT URL-encode special characters.
+ </p>
+
+
+ <!-- ======================================================================================================== -->
+ <a id="BeanAnnotations"></a>
+ <h3 class='topic' onclick='toggle(this)'>2.1 - @Bean and @BeanProperty annotations</h3>
+ <div class='topic'>
+ <p>
+ The {@link com.ibm.juno.core.annotation.Bean @Bean} and {@link com.ibm.juno.core.annotation.BeanProperty @BeanProperty} annotations
+ are used to customize the behavior of beans across the entire framework.<br>
+ They have various uses:
+ </p>
+ <ul>
+ <li>Hiding bean properties.
+ <li>Specifying the ordering of bean properties.
+ <li>Overriding the names of bean properties.
+ <li>Associating filters at both the class and property level (to convert non-serializable POJOs to serializable forms).
+ </ul>
+ <p>
+ For example, we now add a <code>birthDate</code> property, and associate a filter with it to transform
+ it to an ISO8601 date-time string in GMT time.<br>
+ We'll also add a couple of <code>URI</code> properties.<br>
+ By default, <code>Calendars</code> are treated as beans by the framework, which is usually not how you want them serialized.<br>
+ Using filters, we can convert them to standardized string forms.
+ </p>
+ <p class='bcode'>
+ <jk>public class</jk> Person {
+ <jc>// Bean properties</jc>
+ <jk>public int</jk> <jf>id</jf>;
+ <jk>public</jk> String <jf>name</jf>;
+ <jk>public</jk> URI <jf>uri</jf>;
+ <jk>public</jk> URI <jf>addressBookUri</jf>;
+
+ <ja>@BeanProperty</ja>(filter=CalendarFilter.ISO8601DTZ.<jk>class</jk>) <jk>public</jk> Calendar <jf>birthDate</jf>;
+
+
+ <jc>// Bean constructor (needed by parser)</jc>
+ <jk>public</jk> Person() {}
+
+ <jc>// Normal constructor</jc>
+ <jk>public</jk> Person(<jk>int</jk> id, String name, String uri, String addressBookUri, String birthDate) <jk>throws</jk> Exception {
+ <jk>this</jk>.<jf>id</jf> = id;
+ <jk>this</jk>.<jf>name</jf> = name;
+ <jk>this</jk>.<jf>uri</jf> = <jk>new</jk> URI(uri);
+ <jk>this</jk>.<jf>addressBookUri</jf> = <jk>new</jk> URI(addressBookUri);
+ <jk>this</jk>.<jf>birthDate</jf> = <jk>new</jk> GregorianCalendar();
+ <jk>this</jk>.<jf>birthDate</jf>.setTime(DateFormat.<jsm>getDateInstance</jsm>(DateFormat.<jsf>MEDIUM</jsf>).parse(birthDate));
+ }
+ }
+ </p>
+ <p>
+ Next, we alter our code to pass in the birthdate:
+ </p>
+ <p class='bcode'>
+ <jc>// Create our bean.</jc>
+ Person p = <jk>new</jk> Person(1, <js>"John Smith"</js>, <js>"http://sample/addressBook/person/1"</js>, <js>"http://sample/addressBook"</js>, <js>"Aug 12, 1946"</js>);
+ </p>
+ <p>
+ Now when we rerun the sample code, we'll get the following:
+ </p>
+ <p class='bcode'>
+ $o(<xa>id</xa>=$n(<xs>1</xs>),<xa>name</xa>=<xs>John+Smith</xs>,<xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>,<xa>addressBookUri</xa>=<xs>http://sample/addressBook</xs>,<xa>birthDate</xa>=<xs>1946-08-12T00:00:00Z</xs>)
+ </p>
+ <p>
+ Using <code>UrlEncodingSerializer</code> instead would create the following:
+ </p>
+ <p class='bcode'>
+ <xa>id</xa>=$n(<xs>1</xs>)&<xa>name</xa>=<xs>John+Smith</xs>&<xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>&<xa>addressBookUri</xa>=<xs>http://sample/addressBook</xs>&<xa>birthDate</xa>=<xs>1946-08-12T00:00:00Z</xs>
+ </p>
+ <p>
+ Another useful feature is the {@link com.ibm.juno.core.annotation.Bean#propertyNamer()} annotation that allows you to plug in your own
+ logic for determining bean property names.<br>
+ The {@link com.ibm.juno.core.PropertyNamerDashedLC} is an example of an alternate property namer.
+ It converts bean property names to lowercase-dashed format.
+ </p>
+ <h6 class='figure'>Example</h6>
+ <p class='bcode'>
+ <ja>@Bean</ja>(propertyNamer=PropertyNamerDashedLC.<jk>class</jk>)
+ <jk>public class</jk> Person {
+ ...
+ </p>
+ <h6 class='figure'>Results</h6>
+ <p class='bcode'>
+ $o(<xa>id</xa>=$n(<xs>1</xs>),<xa>name</xa>=<xs>John+Smith</xs>,<xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>,<xa>address-book-uri</xa>=<xs>http://sample/addressBook</xs>,<xa>birth-date</xa>=<xs>1946-08-12T00:00:00Z</xs>)
+ </p>
+ </div>
+
+
+ <!-- ======================================================================================================== -->
+ <a id="Collections"></a>
+ <h3 class='topic' onclick='toggle(this)'>2.2 - Collections</h3>
+ <div class='topic'>
+ <p>
+ In our example, let's add a list-of-beans property to our sample class:
+ </p>
+ <p class='bcode'>
+ <jk>public class</jk> Person {
+
+ <jc>// Bean properties</jc>
+ <jk>public</jk> LinkedList<Address> <jf>addresses</jf> = <jk>new</jk> LinkedList<Address>();
+ ...
+ }
+ </p>
+ <p>
+ The <code>Address</code> class has the following properties defined:
+ </p>
+ <p class='bcode'>
+ <jk>public class</jk> Address {
+
+ <jc>// Bean properties</jc>
+ <jk>public</jk> URI <jf>uri</jf>;
+ <jk>public</jk> URI <jf>personUri</jf>;
+ <jk>public int</jk> <jf>id</jf>;
+ <jk>public</jk> String <jf>street</jf>, <jf>city</jf>, <jf>state</jf>;
+ <jk>public int</jk> <jf>zip</jf>;
+ <jk>public boolean</jk> <jf>isCurrent</jf>;
+ }
+ </p>
+ <p>
+ Next, add some quick-and-dirty code to add an address to our person bean:
+ </p>
+ <p class='bcode'>
+ <jc>// Use serializer with readable output, simple mode.</jc>
+ UonSerializer s = UonSerializer.<jsf>DEFAULT_READABLE</jsf>;
+
+ <jc>// Create our bean.</jc>
+ Person p = <jk>new</jk> Person(1, <js>"John Smith"</js>, <js>"http://sample/addressBook/person/1"</js>, <js>"http://sample/addressBook"</js>, <js>"Aug 12, 1946"</js>);
+ Address a = <jk>new</jk> Address();
+ a.<jf>uri</jf> = <jk>new</jk> URI(<js>"http://sample/addressBook/address/1"</js>);
+ a.<jf>personUri</jf> = <jk>new</jk> URI(<js>"http://sample/addressBook/person/1"</js>);
+ a.<jf>id</jf> = 1;
+ a.<jf>street</jf> = <js>"100 Main Street"</js>;
+ a.<jf>city</jf> = <js>"Anywhereville"</js>;
+ a.<jf>state</jf> = <js>"NY"</js>;
+ a.<jf>zip</jf> = 12345;
+ a.<jf>isCurrent</jf> = <jk>true</jk>;
+ p.<jf>addresses</jf>.add(a);
+ </p>
+ <p>
+ Now when we run the sample code, we get the following (in readable format):
+ </p>
+ <p class='bcode'>
+ $o(
+ <xa>id</xa>=$n(<xs>1</xs>),
+ <xa>name</xa>=<xs>John+Smith</xs>,
+ <xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>addressBookUri</xa>=<xs>http://sample/addressBook</xs>,
+ <xa>birthDate</xa>=<xs>1946-08-12T00:00:00Z</xs>,
+ <xa>addresses</xa>=$a(
+ $o(
+ <xa>uri</xa>=<xs>http://sample/addressBook/address/1</xs>,
+ <xa>personUri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>id</xa>=$n(<xs>1</xs>),
+ <xa>street</xa>=<xs>100+Main+Street</xs>,
+ <xa>city</xa>=<xs>Anywhereville</xs>,
+ <xa>state</xa>=<xs>NY</xs>,
+ <xa>zip</xa>=$n(<xs>12345</xs>),
+ <xa>isCurrent</xa>=$b(<xs>true</xs>)
+ )
+ )
+ )
+ </p>
+ <p>
+ If we were to use lax mode instead, we would get the following:
+ </p>
+ <p class='bcode'>
+ (
+ <xa>id</xa>=<xs>1</xs>,
+ <xa>name</xa>=<xs>John+Smith</xs>,
+ <xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>addressBookUri</xa>=<xs>http://sample/addressBook</xs>,
+ <xa>birthDate</xa>=<xs>1946-08-12T00:00:00Z</xs>,
+ <xa>addresses</xa>=(
+ (
+ <xa>uri</xa>=<xs>http://sample/addressBook/address/1</xs>,
+ <xa>personUri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>id</xa>=<xs>1</xs>,
+ <xa>street</xa>=<xs>100+Main+Street</xs>,
+ <xa>city</xa>=<xs>Anywhereville</xs>,
+ <xa>state</xa>=<xs>NY</xs>,
+ <xa>zip</xa>=<xs>12345</xs>,
+ <xa>isCurrent</xa>=<xs>true</xs>
+ )
+ )
+ )
+ </p>
+ <p>
+ Note how the data type information is removed, so it's not possible to distinguish between numbers/booleans/strings, and between objects/arrays.
+ However, this is fine if we're parsing back into the same beans, since we can inver the data types from the bean property metadata.
+ </p>
+ <p>
+ If we were to use <code>UrlEncodingSerializer</code> instead, we would get the following:
+ </p>
+ <p class='bcode'>
+ <xa>id</xa>=$n(<xs>1</xs>)&
+ <xa>name</xa>=<xs>John+Smith</xs>&
+ <xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>&
+ <xa>addressBookUri</xa>=<xs>http://sample/addressBook</xs>&
+ <xa>birthDate</xa>=<xs>1946-08-12T00:00:00Z</xs>&
+ <xa>addresses</xa>=$a(
+ $o(
+ <xa>uri</xa>=<xs>http://sample/addressBook/address/1</xs>,
+ <xa>personUri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>id</xa>=$n(<xs>1</xs>),
+ <xa>street</xa>=<xs>100+Main+Street</xs>,
+ <xa>city</xa>=<xs>Anywhereville</xs>,
+ <xa>state</xa>=<xs>NY</xs>,
+ <xa>zip</xa>=$n(<xs>12345</xs>),
+ <xa>isCurrent</xa>=$b(<xs>true</xs>)
+ )
+ )
+ </p>
+ </div>
+ <p>
+ Note how the top level <code>Person</code> bean is serialized using the standard <js>'&'</js> delimiter, whereas the lower-level <code>Address</code>
+ bean is serialized using the <js>','</js> character to prevent the <code>addresses</code> field from being incompletely parsed.
+ </p>
+
+
+
+
+ <!-- ======================================================================================================== -->
+ <a id="Recursion"></a>
+ <h3 class='topic' onclick='toggle(this)'>2.3 - Non-tree models and recursion detection</h3>
+ <div class='topic'>
+ <p>
+ The URL-encoding serializer is designed to be used against POJO tree structures. <br>
+ It expects that there not be loops in the POJO model (e.g. children with references to parents, etc...).<br>
+ If you try to serialize models with loops, you will usually cause a <code>StackOverflowError</code> to
+ be thrown (if {@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_maxDepth} is not reached first).
+ </p>
+ <p>
+ If you still want to use the URL-encoding serializer on such models, Juno provides the
+ {@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_detectRecursions} setting.<br>
+ It tells the serializer to look for instances of an object in the current branch of the tree and
+ skip serialization when a duplicate is encountered.
+ </p>
+ <p>
+ For example, let's make a POJO model out of the following classes:
+ </p>
+ <p class='bcode'>
+ <jk>public class</jk> A {
+ <jk>public</jk> B b;
+ }
+
+ <jk>public class</jk> B {
+ <jk>public</jk> C c;
+ }
+
+ <jk>public class</jk> C {
+ <jk>public</jk> A a;
+ }
+ </p>
+ <p>
+ Now we create a model with a loop and serialize the results.
+ </p>
+ <p class='bcode'>
+ <jc>// Clone an existing serializer and set property for detecting recursions.</jc>
+ UrlEncodingSerializer s = UrlEncodingSerializer.<jsf>DEFAULT_READABLE</jsf>.clone().setProperty(SerializerProperties.<jsf>SERIALIZER_detectRecursions</jsf>, <jk>true</jk>);
+
+ <jc>// Create a recursive loop.</jc>
+ A a = <jk>new</jk> A();
+ a.<jf>b</jf> = <jk>new</jk> B();
+ a.<jf>b</jf>.<jf>c</jf> = <jk>new</jk> C();
+ a.<jf>b</jf>.<jf>c</jf>.<jf>a</jf> = a;
+
+ <jc>// Serialize.</jc>
+ String json = s.serialize(a);
+ </p>
+ <p>
+ What we end up with is the following, which does not serialize the contents of the <code>c</code> field:
+ </p>
+ <p class='bcode'>
+ $o(
+ <xa>b</xa>=$o(
+ <xa>c</xa>=$o()
+ )
+ )
+ </p>
+ <p>
+ Without recursion detection enabled, this would cause a stack-overflow error.
+ </p>
+ <p>
+ Recursion detection introduces a performance penalty of around 20%.<br>
+ For this reason the setting is disabled by default.
+ </p>
+ </div>
+
+
+ <!-- ======================================================================================================== -->
+ <a id="SerializerConfigurableProperties"></a>
+ <h3 class='topic' onclick='toggle(this)'>2.4 - Configurable properties</h3>
+ <div class='topic'>
+ <p>
+ The full list of configurable settings applicable to the <code>UrlEncodingSerializer</code> class is shown below:
+ </p>
+ <table class='styled' style='border-collapse: collapse;'>
+ <tr><th>Property</th><th>Short Description</th></tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.urlencoding.UonSerializerProperties#UON_simpleMode}</td>
+ <td>Use UON lax mode instead of strict mode</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.urlencoding.UonSerializerProperties#UON_useWhitespace}</td>
+ <td>Use whitespace in output</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.urlencoding.UonSerializerProperties#UON_encodeChars}</td>
+ <td>Encode invalid URI characters</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_maxDepth}</td>
+ <td>Maximum serialization depth</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_detectRecursions}</td>
+ <td>Automatically detect POJO recursions</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_useIndentation}</td>
+ <td>Use indentation in output</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_trimNullProperties}</td>
+ <td>Trim null bean property values from output</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_trimEmptyLists}</td>
+ <td>Trim empty lists and arrays from output</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_trimEmptyMaps}</td>
+ <td>Trim empty maps from output</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_relativeUriBase}</td>
+ <td>URI context root for relative URIs</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.serializer.SerializerProperties#SERIALIZER_absolutePathUriBase}</td>
+ <td>URI authority for absolute path relative URIs</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_beansRequireDefaultConstructor}</td>
+ <td>Beans require no-arg constructors</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_beansRequireSerializable}</td>
+ <td>Beans require <code>Serializable</code> interface</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_beansRequireSettersForGetters}</td>
+ <td>Beans require setters for getters</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_beansRequireSomeProperties}</td>
+ <td>Beans require some properties</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_beanConstructorVisibility}</td>
+ <td>Look for bean constructors with the specified minimum visibility</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_beanClassVisibility}</td>
+ <td>Look for bean classes with the specified minimum visibility</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_beanFieldVisibility}</td>
+ <td>Look for bean fields with the specified minimum visibility</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_methodVisibility}</td>
+ <td>Look for bean methods with the specified minimum visibility</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_useInterfaceProxies}</td>
+ <td>Use interface proxies</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_ignoreUnknownBeanProperties}</td>
+ <td>Ignore unknown properties</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_ignoreUnknownNullBeanProperties}</td>
+ <td>Ignore unknown properties with null values</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_ignorePropertiesWithoutSetters}</td>
+ <td>Ignore properties without setters</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_ignoreInvocationExceptionsOnGetters}</td>
+ <td>Ignore invocation errors when calling getters</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_ignoreInvocationExceptionsOnSetters}</td>
+ <td>Ignore invocation errors when calling setters</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_addNotBeanPackages}</td>
+ <td>Add to the list of packages whose classes should not be considered beans</td>
+ </tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.BeanContextProperties#BEAN_removeNotBeanPackages}</td>
+ <td>Remove from the list of packages whose classes should not be considered beans</td>
+ </tr>
+ </table>
+ </div>
+
+
+ <!-- ======================================================================================================== -->
+ <a id="SerializerOtherNotes"></a>
+ <h3 class='topic' onclick='toggle(this)'>2.5 - Other notes</h3>
+ <div class='topic'>
+ <ul>
+ <li>Like all other Juno serializers, the URL-encoding serializers are thread safe and maintain an internal cache of bean classes encountered.<br>
+ For performance reasons, it's recommended that serializers be reused whenever possible instead of always creating new instances.
+ </ul>
+ </div>
+</div>
+
+
+<!-- ======================================================================================================== -->
+<a id="UrlEncodingParser"></a>
+<h2 class='topic' onclick='toggle(this)'>3 - UrlEncodingParser and UonParser classes</h2>
+<div class='topic'>
+ <p>
+ {@link com.ibm.juno.core.urlencoding.UrlEncodingParser} and {@link com.ibm.juno.core.urlencoding.UonParser} classes are used to convert URL-encoded strings back into POJOs.<br>
+ The <code>UonParser</code> class converts UON-encoded parameter values to POJOs.
+ The <code>UrlEncodingParser</code> class converts entire URL-Encoded strings to POJOs using <code>UonSerializer</code> to serialize indivisual values.
+ If you're trying to parse an entire URL-Encoded string, use <code>UrlEncodingParser</code>.
+ If you're trying to parse an individual value (such as that returned by <code>RestServlet.getParameter(name)</code>), use <code>UonParser</code>.
+ </p>
+ <p>
+ The following static reusable instances of <code>UrlEncodingParser</code> are provided for convenience:
+ </p>
+ <ul>
+ <li>{@link com.ibm.juno.core.urlencoding.UrlEncodingParser#DEFAULT} - Default parser for entire URL-encoded strings, decode <code>%xx</code> sequences.
+ <li>{@link com.ibm.juno.core.urlencoding.UonParser#DEFAULT} - Default parser for URL-encoded parameter values, don't decode <code>%xx</code> sequences.
+ <li>{@link com.ibm.juno.core.urlencoding.UonParser#DEFAULT_DECODING} - Default parser for URL-encoded parameter values, decode <code>%xx</code> sequences.
+ </ul>
+ <p>
+ The general guildlines on which parser to use is:
+ </p>
+ <ul>
+ <li>Use the <code>DEFAULT</code> parser for parameter values that have already had <code>%xx</code> sequences decoded,
+ such as when using <code>HttpServletRequest.getParameter(name)</code>.
+ <li>Use the <code>DEFAULT_ENCODED</code> parser if the input has not already had <code>%xx</code> sequences decoded.
+ </ul>
+ <p>
+ Let's build upon the previous example and parse the generated URL-encoded string back into the original bean.<br>
+ We start with the URL-encoded string that was generated.
+ </p>
+ <p class='bcode'>
+ <jc>// Use serializer with readable output.</jc>
+ UonSerializer s = UonSerializer.<jsf>DEFAULT_READABLE</jsf>;
+
+ <jc>// Create our bean.</jc>
+ Person p = <jk>new</jk> Person(1, <js>"John Smith"</js>, <js>"http://sample/addressBook/person/1"</js>, <js>"http://sample/addressBook"</js>, <js>"Aug 12, 1946"</js>);
+ Address a = <jk>new</jk> Address();
+ a.<jf>uri</jf> = <jk>new</jk> URI(<js>"http://sample/addressBook/address/1"</js>);
+ a.<jf>personUri</jf> = <jk>new</jk> URI(<js>"http://sample/addressBook/person/1"</js>);
+ a.<jf>id</jf> = 1;
+ a.<jf>street</jf> = <js>"100 Main Street"</js>;
+ a.<jf>city</jf> = <js>"Anywhereville"</js>;
+ a.<jf>state</jf> = <js>"NY"</js>;
+ a.<jf>zip</jf> = 12345;
+ a.<jf>isCurrent</jf> = <jk>true</jk>;
+ p.<jf>addresses</jf>.add(a);
+
+ <jc>// Serialize the bean.</jc>
+ String urlencoded = s.serialize(p);
+ </p>
+ <p>
+ This code produced the following:
+ </p>
+ <p class='bcode'>
+ $o(
+ <xa>id</xa>=$n(<xs>1</xs>),
+ <xa>name</xa>=<xs>John+Smith</xs>,
+ <xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>addressBookUri</xa>=<xs>http://sample/addressBook</xs>,
+ <xa>birthDate</xa>=<xs>1946-08-12T00:00:00Z</xs>,
+ <xa>addresses</xa>=$a(
+ $o(
+ <xa>uri</xa>=<xs>http://sample/addressBook/address/1</xs>,
+ <xa>personUri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>id</xa>=$n(<xs>1</xs>),
+ <xa>street</xa>=<xs>100+Main+Street</xs>,
+ <xa>city</xa>=<xs>Anywhereville</xs>,
+ <xa>state</xa>=<xs>NY</xs>,
+ <xa>zip</xa>=$n(<xs>12345</xs>),
+ <xa>isCurrent</xa>=$b(<xs>true</xs>)
+ )
+ )
+ )
+ </p>
+ <p>
+ The code to convert this back into a bean is:
+ </p>
+ <p class='bcode'>
+ <jc>// Parse it back into a bean using the reusable JSON parser.</jc>
+ Person p = UonParser.<jsf>DEFAULT</jsf>.parse(urlencoded, Person.<jk>class</jk>);
+
+ <jc>// Render it back as JSON.</jc>
+ json = JsonSerializer.<jsf>DEFAULT_SIMPLE_READABLE</jsf>.serialize(p);
+ </p>
+ <p>
+ We print it back out to JSON to show that all the data has been preserved:
+ </p>
+ <p class='bcode'>
+ {
+ id: <jk>1</jk>,
+ name: <js>'John Smith'</js>,
+ uri: <js>'http://sample/addressBook/person/1'</js>,
+ addressBookUri: <js>'http://sample/addressBook'</js>,
+ birthDate: <js>'1946-08-12T00:00:00Z'</js>,
+ addresses: [
+ {
+ uri: <js>'http://sample/addressBook/address/1'</js>,
+ personUri: <js>'http://sample/addressBook/person/1'</js>,
+ id: <jk>1</jk>,
+ street: <js>'100 Main Street'</js>,
+ city: <js>'Anywhereville'</js>,
+ state: <js>'NY'</js>,
+ zip: <jk>12345</jk>,
+ isCurrent: <jk>true</jk>
+ }
+ ]
+ }
+ </p>
+
+
+ <!-- ======================================================================================================== -->
+ <a id="GenericParsing"></a>
+ <h3 class='topic' onclick='toggle(this)'>3.1 - Parsing into generic POJO models</h3>
+ <div class='topic'>
+ <p>
+ The URL-encoding parser is not limited to parsing back into the original bean classes.<br>
+ If the bean classes are not available on the parsing side, the parser can also be used to
+ parse into a generic model consisting of <code>Maps</code>, <code>Collections</code>, and primitive
+ objects.
+ </p>
+ <p>
+ You can parse into any <code>Map</code> type (e.g. <code>HashMap</code>, <code>TreeMap</code>), but
+ using {@link com.ibm.juno.core.ObjectMap} is recommended since it has many convenience methods
+ for converting values to various types.<br>
+ The same is true when parsing collections. You can use any Collection (e.g. <code>HashSet</code>, <code>LinkedList</code>)
+ or array (e.g. <code>Object[]</code>, <code>String[]</code>, <code>String[][]</code>), but using
+ {@link com.ibm.juno.core.ObjectList} is recommended.
+ </p>
+ <p>
+ When the map or list type is not specified, or is the abstract <code>Map</code>, <code>Collection</code>, or <code>List</code> types,
+ the parser will use <code>ObjectMap</code> and <code>ObjectList</code> by default.
+ </p>
+ <p>
+ Starting back with our original URL-encoded string:
+ </p>
+ <p class='bcode'>
+ $o(
+ <xa>id</xa>=$n(<xs>1</xs>),
+ <xa>name</xa>=<xs>John+Smith</xs>,
+ <xa>uri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>addressBookUri</xa>=<xs>http://sample/addressBook</xs>,
+ <xa>birthDate</xa>=<xs>1946-08-12T00:00:00Z</xs>,
+ <xa>addresses</xa>=$a(
+ $o(
+ <xa>uri</xa>=<xs>http://sample/addressBook/address/1</xs>,
+ <xa>personUri</xa>=<xs>http://sample/addressBook/person/1</xs>,
+ <xa>id</xa>=$n(<xs>1</xs>),
+ <xa>street</xa>=<xs>100+Main+Street</xs>,
+ <xa>city</xa>=<xs>Anywhereville</xs>,
+ <xa>state</xa>=<xs>NY</xs>,
+ <xa>zip</xa>=$n(<xs>12345</xs>),
+ <xa>isCurrent</xa>=$b(<xs>true</xs>)
+ )
+ )
+ )
+ </p>
+ <p>
+ We can parse this into a generic <code>ObjectMap</code>:
+ </p>
+ <p class='bcode'>
+ <jc>// Parse URL-encoded string into a generic POJO model.</jc>
+ ObjectMap m = UonParser.<jsf>DEFAULT</jsf>.parse(urlencoded, ObjectMap.<jk>class</jk>);
+
+ <jc>// Convert it back to JSON.</jc>
+ String json = JsonSerializer.<jsf>DEFAULT_SIMPLE_READABLE</jsf>.serialize(m);
+ </p>
+ <p>
+ What we end up with is the exact same output.<br>
+ Even the numbers and booleans are preserved because they are parsed into <code>Number</code> and <code>Boolean</code> objects
+ when parsing into generic models.
+ </p>
+ <p class='bcode'>
+ {
+ id: <jk>1</jk>,
+ name: <js>'John Smith'</js>,
+ uri: <js>'http://sample/addressBook/person/1'</js>,
+ addressBookUri: <js>'http://sample/addressBook'</js>,
+ birthDate: <js>'1946-08-12T00:00:00Z'</js>,
+ addresses: [
+ {
+ uri: <js>'http://sample/addressBook/address/1'</js>,
+ personUri: <js>'http://sample/addressBook/person/1'</js>,
+ id: <jk>1</jk>,
+ street: <js>'100 Main Street'</js>,
+ city: <js>'Anywhereville'</js>,
+ state: <js>'NY'</js>,
+ zip: <jk>12345</jk>,
+ isCurrent: <jk>true</jk>
+ }
+ ]
+ }
+ </p>
+ <p>
+ Once parsed into a generic model, various convenience methods are provided on the <code>ObjectMap</code>
+ and <code>ObjectList</code> classes to retrieve values:
+ </p>
+ <p class='bcode'>
+ <jc>// Parse URL-encoded string into a generic POJO model.</jc>
+ ObjectMap m = UonParser.<jsf>DEFAULT</jsf>.parse(urlencoded, ObjectMap.<jk>class</jk>);
+
+ <jc>// Get some simple values.</jc>
+ String name = m.getString(<js>"name"</js>);
+ <jk>int</jk> id = m.getInt(<js>"id"</js>);
+
+ <jc>// Get a value convertable from a String.</jc>
+ URI uri = m.get(URI.<jk>class</jk>, <js>"uri"</js>);
+
+ <jc>// Get a value using a filter.</jc>
+ CalendarFilter filter = <jk>new</jk> CalendarFilter.ISO8601DTZ();
+ Calendar birthDate = m.get(filter, <js>"birthDate"</js>);
+
+ <jc>// Get the addresses.</jc>
+ ObjectList addresses = m.getObjectList(<js>"addresses"</js>);
+
+ <jc>// Get the first address and convert it to a bean.</jc>
+ Address address = addresses.get(Address.<jk>class</jk>, 0);
+ </p>
+
+ <p>
+ As a general rule, parsing into beans is often more efficient than parsing into generic models.<br>
+ And working with beans is often less error prone than working with generic models.
+ </p>
+ </div>
+
+
+ <!-- ======================================================================================================== -->
+ <a id="ParserConfigurableProperties"></a>
+ <h3 class='topic' onclick='toggle(this)'>3.2 - Configurable properties</h3>
+ <div class='topic'>
+ <p>
+ The full list of configurable settings applicable to the <code>UrlEncodingParser</code> class is shown below:
+ </p>
+ <table class='styled' style='border-collapse: collapse;'>
+ <tr><th>Property</th><th>Short Description</th></tr>
+ <tr>
+ <td>{@link com.ibm.juno.core.urlencoding.UonParserProperties#UON_decodeChars}</td>
+ <td>Decode <js>"%xx"</js> sequences</td>
+ </tr>
+ </table>
+ </div>
+
+
+ <!-- ======================================================================================================== -->
+ <a id="ParserOtherNotes"></a>
+ <h3 class='topic' onclick='toggle(this)'>3.3 - Other notes</h3>
+ <div class='topic'>
+ <ul>
+ <li>Like all other Juno parsers, the URL-encoding parsers are thread safe and maintain an internal cache of bean classes encountered.<br>
+ For performance reasons, it's recommended that parser be reused whenever possible instead of always creating new instances.
+ </ul>
+ </div>
+
+</div>
+
+
+<!-- ======================================================================================================== -->
+<a id="RestApiSupport"></a>
+<h2 class='topic' onclick='toggle(this)'>4 - REST API support</h2>
+<div class='topic'>
+ <p>
+ Juno provides fully-integrated support for URL-encoding serialization/parsing in the REST server and client APIs.<br>
+ The next two sections describe these in detail.
+ </p>
+
+ <!-- ======================================================================================================== -->
+ <a id="RestServerSupport"></a>
+ <h3 class='topic' onclick='toggle(this)'>4.1 - REST server support</h3>
+ <div class='topic'>
+ <p>
+ There are four general ways of defining REST interfaces with support for JSON.
+ Two using the built-in Juno Server API, and two using the JAX-RS integration component.
+ </p>
+ <ul>
+ <li>Create a servlet that subclasses from {@link com.ibm.juno.server.RestServletDefault}.<br>
+ This includes URL-encoding serialization/parsing support by default, in addition to several other media types.<br><br>
+ <li>Create a servlet that subclasses from {@link com.ibm.juno.server.RestServlet} and specify the
+ URL-encoding serializer and/or parser using the {@link com.ibm.juno.server.annotation.RestResource#serializers()} and
+ {@link com.ibm.juno.server.annotation.RestResource#parsers()} on the entire servlet class, or
+ the {@link com.ibm.juno.server.annotation.RestMethod#serializers()} and {@link com.ibm.juno.server.annotation.RestMethod#parsers()}
+ annotations on individual methods within the class.<br><br>
+ <li>Register {@link com.ibm.juno.server.jaxrs.DefaultProvider} with JAX-RS.<br>
+ This includes URL-encoding serialization/parsing support by default, in addition to several other media types.<br><br>
+ <li>Create and register a subclass of {@link com.ibm.juno.server.jaxrs.BaseProvider} and specify the serializers and parsers to use on JAX-RS resources.
+ </ul>
+ <p>
+ In general, the Juno REST server API is much more configurable and easier to use than JAX-RS, but beware that the author may be slightly biased in this statement.
+ </p>
+
+ <!-- ======================================================================================================== -->
+ <a id="RestServletDefault"></a>
+ <h4 class='topic' onclick='toggle(this)'>4.1.1 - Using RestServletDefault</h4>
+ <div class='topic'>
+ <p>
+ The quickest way to implement a REST resource with URL-encoding support is to create a subclass of {@link com.ibm.juno.server.RestServletDefault}.<br>
+ This class provides support for JSON, XML, HTML, URL-Encoding, and others.
+ </p>
+ <p>
+ The <code>AddressBookResource</code> example shown in the first chapter uses the <code>RestServletJenaDefault</code> class
+ which is a subclass of <code>RestServletDefault</code> with additional support for RDF languages.<br>
+ The start of the class definition is shown below:
+ </p>
+ <p class='bcode'>
+ <jc>// Proof-of-concept resource that shows off the capabilities of working with POJO resources.
+ // Consists of an in-memory address book repository.</jc>
+ <ja>@RestResource</ja>(
+ messages=<js>"nls/AddressBookResource"</js>,
+ properties={
+ <ja>@Property</ja>(name=UonSerializerProperties.<jsf>UON_simpleMode</jsf>, value=<js>"true"</js>),
+ <ja>@Property</ja>(name=HtmlDocSerializerProperties.<jsf>HTMLDOC_title</jsf>, value=<js>"$L{title}"</js>),
+ <ja>@Property</ja>(name=HtmlDocSerializerProperties.<jsf>HTMLDOC_description</jsf>, value=<js>"$L{description}"</js>),
+ <ja>@Property</ja>(name=HtmlDocSerializerProperties.<jsf>HTMLDOC_links</jsf>, value=<js>"{options:'?method=OPTIONS',doc:'doc'}"</js>)
+ },
+ encoders=GzipEncoder.<jk>class</jk>
+ )
+ <jk>public class</jk> AddressBookResource <jk>extends</jk> RestServletJenaDefault {
+ </p>
+ <p>
+ Notice how serializer and parser properties can be specified using the <code>@RestResource.properties()</code> annotation.<br>
+ In this case, we're overriding the <jsf>UON_simpleMode</jsf> property to produce lax UON notation.
+ The remaining properties are specific to the HTML serializer.
+ </p>
+ <p>
+ The <code>$L{...}</code> variable represent localized strings pulled from the resource bundle identified by the <code>messages</code> annotation.
+ These variables are replaced at runtime based on the HTTP request locale.
+ Several built-in runtime variable types are defined, and the API can be extended to include user-defined variables.
+ See {@link com.ibm.juno.server.RestServlet#getVarResolver()} for more information.
+ </p>
+ <p>
+ This document won't go into all the details of the Juno <code>RestServlet</code> class.<br>
+ Refer to the {@link com.ibm.juno.server} documentation for more information on the REST servlet class in general.
+ </p>
+ <p>
+ The rest of the code in the resource class consists of REST methods that simply accept and return POJOs.<br>
+ The framework takes care of all content negotiation, serialization/parsing, and error handling.<br>
+ Below are 3 of those methods to give you a general idea of the concept:
+ </p>
+ <p class='bcode'>
+ <jc>// GET person request handler</jc>
+ <ja>@RestMethod</ja>(name=<js>"GET"</js>, path=<js>"/people/{id}/*"</js>, rc={200,404})
+ <jk>public</jk> Person getPerson(RestRequest req, <ja>@Attr</ja> <jk>int</jk> id) throws Exception {
+ properties.put(HtmlDocSerializerProperties.<jsf>HTMLDOC_title</jsf>, req.getPathInfo());
+ <jk>return</jk> findPerson(id);
+ }
+
+ <jc>// POST person handler</jc>
+ <ja>@RestMethod</ja>(name=<js>"POST"</js>, path=<js>"/people"</js>, guards=AdminGuard.<jk>class</jk>, rc={307,404})
+ <jk>public void</jk> createPerson(RestResponse res, <ja>@Content</ja> CreatePerson cp) <jk>throws</jk> Exception {
+ Person p = addressBook.createPerson(cp);
+ res.sendRedirect(p.<jf>uri</jf>);
+ }
+
+ <jc>// DELETE person handler</jc>
+ <ja>@RestMethod</ja>(name=<js>"DELETE"</js>, path=<js>"/people/{id}"</js>, guards=AdminGuard.<jk>class</jk>, rc={200,404})
+ <jk>public</jk> String deletePerson(RestResponse res, <ja>@Attr</ja> <jk>int</jk> id) <jk>throws</jk> Exception {
+ Person p = findPerson(id);
+ addressBook.remove(p);
+ <jk>return</jk> <js>"DELETE successful"</js>;
+ }
+ </p>
+ <p>
+ The resource class can be registered with the web application like any other servlet, or can be
+ defined as a child of another resource through the {@link com.ibm.juno.server.annotation.RestResource#children()} annotation.
+ </div>
+
+ <!-- ======================================================================================================== -->
+ <a id="RestServlet"></a>
+ <h4 class='topic' onclick='toggle(this)'>4.1.2 - Using RestServlet with annotations</h4>
+ <div class='topic'>
+ <p>
+ For fine-tuned control of media types, the {@link com.ibm.juno.server.RestServlet} class
+ can be subclassed directly.<br>
+ The serializers/parsers can be specified through annotations at the class and/or method levels.
+ </p>
+ <p>
+ An equivalent <code>AddressBookResource</code> class could be defined to only support URL-encoding using
+ the following definition:
+ </p>
+ <p class='bcode'>
+ <ja>@RestResource</ja>(
+ serializers={UrlEncodingSerializer.<jk>class</jk>},
+ parsers={UrlEncodingParser.<jk>class</jk>},
+ properties={
+ <ja>@Property</ja>(name=UonSerializerProperties.<jsf>UON_simpleMode</jsf>, value=<js>"true"</js>)
+ }
+ )
+ <jk>public class</jk> AddressBookResource <jk>extends</jk> RestServlet {
+ </p>
+ <p>
+ Likewise, serializers and parsers can be specified/augmented/overridden at the method level like so:
+ </p>
+ <p class='bcode'>
+ <jc>// GET person request handler</jc>
+ <ja>@RestMethod</ja>(name=<js>"GET"</js>, path=<js>"/people/{id}/*"</js>, rc={200,404},
+ serializers={UrlEncodingSerializer.<jk>class</jk>},
+ parsers={UrlEncodingParser.<jk>class</jk>},
+ properties={
+ <ja>@Property</ja>(name=UonSerializerProperties.<jsf>UON_simpleMode</jsf>, value=<js>"true"</js>)
+ }
+ )
+ <jk>public</jk> Person getPerson(RestRequest req, <ja>@Attr</ja> <jk>int</jk> id) throws Exception {
+ properties.put(HtmlDocSerializerProperties.<jsf>HTMLDOC_title</jsf>, req.getPathInfo());
+ <jk>return</jk> findPerson(id);
+ }
+ </p>
+ <p>
+ The {@link com.ibm.juno.server.annotation.RestMethod#serializersInherit()} and
+ {@link com.ibm.juno.server.annotation.RestMethod#parsersInherit()} control how various artifacts
+ are inherited from the parent class.<br>
+ Refer to {@link com.ibm.juno.server} for additional information on using these annotations.
+ </p>
+ </div>
+
+ <!-- ======================================================================================================== -->
+ <a id="DefaultProvider"></a>
+ <h4 class='topic' onclick='toggle(this)'>4.1.3 - Using JAX-RS DefaultProvider</h4>
+ <div class='topic'>
+ <p>
+ URL-encoding media type support in JAX-RS can be achieved by using the {@link com.ibm.juno.server.jaxrs.DefaultProvider} class.<br>
+ It implements the JAX-RS <code>MessageBodyReader</code> and <code>MessageBodyWriter</code> interfaces for all Juno supported media types.
+ </p>
+ <p>
+ The <code>DefaultProvider</code> class definition is shown below:
+ </p>
+ <p class='bcode'>
+ <ja>@Provider</ja>
+ <ja>@Produces</ja>({
+ <js>"application/json"</js>, <js>"text/json"</js>, <jc>// JsonSerializer</jc>
+ <js>"application/json+simple"</js>,<js>"text/json+simple"</js>, <jc>// JsonSerializer.Simple</jc>
+ <js>"application/json+schema"</js>,<js>"text/json+schema"</js>, <jc>// JsonSchemaSerializer</jc>
+ <js>"text/xml"</js>, <jc>// XmlDocSerializer</jc>
+ <js>"text/xml+simple"</js>, <jc>// XmlDocSerializer.Simple</jc>
+ <js>"text/xml+schema"</js>, <jc>// XmlSchemaDocSerializer</jc>
+ <js>"text/html"</js>, <jc>// HtmlDocSerializer</jc>
+ <js>"text/uon"</js>, <jc>// UonSerializer</jc>
+ <js>"application/x-www-form-urlencoded"</js>, <jc>// UrlEncodingSerializer</jc>
+ <js>"text/xml+soap"</js>, <jc>// SoapXmlSerializer</jc>
+ <js>"application/x-java-serialized-object"</js> <jc>// JavaSerializedObjectSerializer</jc>
+ })
+ <ja>@Consumes</ja>({
+ <js>"application/json"</js>, <js>"text/json"</js>, <jc>// JsonParser</jc>
+ <js>"text/xml"</js>, <jc>// XmlParser</jc>
+ <js>"text/html"</js>, <jc>// HtmlParser</jc>
+ <js>"text/uon"</js>, <jc>// UonParser</jc>
+ <js>"application/x-www-form-urlencoded"</js>, <jc>// UrlEncodingParser</jc>
+ <js>"application/x-java-serialized-object"</js> <jc>// JavaSerializedObjectParser</jc>
+ })
+ <ja>@JunoProvider</ja>(
+ serializers={
+ JsonSerializer.<jk>class</jk>,
+ JsonSerializer.Simple.<jk>class</jk>,
+ JsonSchemaSerializer.<jk>class</jk>,
+ XmlDocSerializer.<jk>class</jk>,
+ XmlDocSerializer.Simple.<jk>class</jk>,
+ XmlSchemaDocSerializer.<jk>class</jk>,
+ HtmlDocSerializer.<jk>class</jk>,
+ UonSerializer.<jk>class</jk>,
+ UrlEncodingSerializer.<jk>class</jk>,
+ SoapXmlSerializer.<jk>class</jk>,
+ JavaSerializedObjectSerializer.<jk>class</jk>
+ },
+ parsers={
+ JsonParser.<jk>class</jk>,
+ XmlParser.<jk>class</jk>,
+ HtmlParser.<jk>class</jk>,
+ UonParser.<jk>class</jk>,
+ UrlEncodingParser.<jk>class</jk>,
+ JavaSerializedObjectParser.<jk>class</jk>,
+ }
+ )
+ <jk>public final class</jk> DefaultProvider <jk>extends</jk> BaseProvider {}
+ </p>
+ <p>
+ That's the entire class. It consists of only annotations to hook up media types to Juno serializers and parsers.
+ The <ja>@Provider</ja>, <ja>@Produces</ja>, and <ja>@Consumes</ja> annotations are standard JAX-RS annotations, and the <ja>@JunoProvider</ja> annotation is from Juno.
+ </p>
+ <p>
+ To enable the provider, you need to make the JAX-RS environment aware of it.
+ In Wink, this is accomplished by adding an entry to a config file.
+ </p>
+ <p class='bcode'>
+ <xt><web-app</xt> <xa>version</xa>=<xs>"2.3"</xs><xt>></xt>
+ <xt><servlet></xt>
+ <xt><servlet-name></xt>WinkService<xt></servlet-name></xt>
+ <xt><servlet-class></xt>org.apache.wink.server.internal.servlet.RestServlet<xt></servlet-class></xt>
+ <xt><init-param></xt>
+ <xt><param-name></xt>applicationConfigLocation<xt></param-name></xt>
+ <xt><param-value></xt>/WEB-INF/wink.cfg<xt></param-value></xt>
+ <xt></init-param></xt>
+ <xt></servlet></xt>
+ </p>
+ <p>
+ Simply include a reference to the provider in the configuration file.
+ <p class='bcode'>
+ com.ibm.juno.server.jaxrs.DefaultProvider
+ </p>
+ <p>
+ Properties can be specified on providers through the {@link com.ibm.juno.server.jaxrs.JunoProvider#properties()} annotation.<br>
+ Properties can also be specified at the method level by using the {@link com.ibm.juno.server.annotation.RestMethod#properties} annotation, like so:
+ </p>
+ <p class='bcode'>
+ <ja>@GET</ja>
+ <ja>@Produces</ja>(<js>"*/*"</js>)
+ <ja>@RestMethod</ja>( <jc>/* Override some properties */</jc>
+ properties={
+ <ja>@Property</ja>(name=UonSerializerProperties.<jsf>UON_simpleMode</jsf>, value=<js>"true"</js>)
+ }
+ )
+ <jk>public</jk> Message getMessage() {
+ <jk>return</jk> message;
+ }
+ </p>
+ <h6 class='topic'>Limitations</h6>
+ <p>
+ In general, the Juno REST API is considerably more flexible than the JAX-RS API, since you can specify and override
+ serializers, parsers, properties, filters, converters, guards, etc... at both the class and method levels.<br>
+ Therefore, the JAX-RS API has the following limitations that the Juno Server API does not:
+ </p>
+ <ul>
+ <li>The ability to specify different media type providers at the class and method levels.<br>
+ For example, you may want to use <code>JsonSerializer</code> with one set of properties on
+ one class, and another instance with different properties on another class.<br>
+ There is currently no way to define this at the class level.<br>
+ You can override properties at the method level, but this can be cumbersome since it would have to be
+ done for all methods in the resource.<br><br>
+ <li>The Juno Server API allows you to manipulate properties programatically through the {@link com.ibm.juno.server.RestResponse#setProperty(String,Object)}
+ method, and through the {@link com.ibm.juno.server.annotation.Properties} annotation.<br>
+ There is no equivalent in JAX-RS.
+ </ul>
+ </div>
+
+ <!-- ======================================================================================================== -->
+ <a id="BaseProvider"></a>
+ <h4 class='topic' onclick='toggle(this)'>4.1.4 - Using JAX-RS BaseProvider with annotations</h4>
+ <div class='topic'>
+ <p>
+ To provide support for only JSON media types, you can define your own provider class, like so:
+ </p>
+ <p class='bcode'>
+ <ja>@Provider</ja>
+ <ja>@Produces</ja>({
+ <js>"application/x-www-form-urlencoded"</js>, <jc>// UrlEncodingSerializer</jc>
+ })
+ <ja>@Consumes</ja>({
+ <js>"application/x-www-form-urlencoded"</js> <jc>// UrlEncodingParser</jc>
+ })
+ <ja>@JunoProvider</ja>(
+ serializers={
+ UrlEncodingSerializer.<jk>class</jk>
+ },
+ parsers={
+ UrlEncodingParser.<jk>class</jk>,
+ }
+ properties={
+ <ja>@Property</ja>(name=UonSerializerProperties.<jsf>UON_simpleMode</jsf>, value=<js>"true"</js>)
+ }
+ )
+ <jk>public final class</jk> MyUrlEncodingProvider <jk>extends</jk> BaseProvider {}
+ </p>
+ <p>
+ Then register it with Wink the same way as <code>DefaultProvider</code>.
+ </p>
+ </div>
+
+ </div>
+
+ <!-- ======================================================================================================== -->
+ <a id="RestClientSupport"></a>
+ <h3 class='topic' onclick='toggle(this)'>4.2 - REST client support</h3>
+ <div class='topic'>
+ <p>
+ The {@link com.ibm.juno.client.RestClient} class provides an easy-to-use REST client interface with
+ pluggable media type handling using any of the Juno serializers and parsers.<br>
+ Defining a client to support the URL-encoding media type on HTTP requests and responses can be done in one line of code:
+ </p>
+ <p class='bcode'>
+ <jc>// Create a client to handle URL-encoded requests and responses.</jc>
+ RestClient client = <jk>new</jk> RestClient(UrlEncodingSerializer.<jk>class</jk>, UrlEncodingParser.<jk>class</jk>);
+ </p>
+ <p>
+ The client handles all content negotiation based on the registered serializers and parsers.
+ </p>
+ <p>
+ The following code is pulled from the main method of the <code>ClientTest</code> class in the sample web application, and
+ is run against the <code>AddressBookResource</code> class running within the sample app.<br>
+ It shows how the client can be used to interact with the REST API while completely hiding the negotiated content type and working with nothing more than beans.
+ </p>
+ <h6 class='figure'>Example</h6>
+ <p class='bcode'>
+ String root = <js>"http://localhost:9080/sample/addressBook"</js>;
+
+ <jc>// Get the current contents of the address book</jc>
+ AddressBook ab = client.doGet(root).getResponse(AddressBook.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Number of entries = "</js> + ab.size());
+
+ <jc>// Delete the existing entries</jc>
+ <jk>for</jk> (Person p : ab) {
+ String r = client.doDelete(p.<jf>uri</jf>).getResponse(String.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Deleted person "</js> + p.<jf>name</jf> + <js>", response = "</js> + r);
+ }
+
+ <jc>// Make sure they're gone</jc>
+ ab = client.doGet(root).getResponse(AddressBook.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Number of entries = "</js> + ab.size());
+
+ <jc>// Add 1st person again</jc>
+ CreatePerson cp = <jk>new</jk> CreatePerson(
+ <js>"Barack Obama"</js>,
+ <jsm>toCalendar</jsm>(<js>"Aug 4, 1961"</js>),
+ <jk>new</jk> CreateAddress(<js>"1600 Pennsylvania Ave"</js>, <js>"Washington"</js>, <js>"DC"</js>, 20500, <jk>true</jk>),
+ <jk>new</jk> CreateAddress(<js>"5046 S Greenwood Ave"</js>, <js>"Chicago"</js>, <js>"IL"</js>, 60615, <jk>false</jk>)
+ );
+ Person p = client.doPost(root + <js>"/people"</js>, cp).getResponse(Person.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Created person "</js> + p.<jf>name</jf> + <js>", uri = "</js> + p.<jf>uri</jf>);
+
+ <jc>// Add 2nd person again, but add addresses separately</jc>
+ cp = <jk>new</jk> CreatePerson(
+ <js>"George Walker Bush"</js>,
+ toCalendar(<js>"Jul 6, 1946"</js>)
+ );
+ p = client.doPost(root + <js>"/people"</js>, cp).getResponse(Person.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Created person "</js> + p.<jf>name</jf> + <js>", uri = "</js> + p.<jf>uri</jf>);
+
+ <jc>// Add addresses to 2nd person</jc>
+ CreateAddress ca = <jk>new</jk> CreateAddress(<js>"43 Prairie Chapel Rd"</js>, <js>"Crawford"</js>, <js>"TX"</js>, 76638, <jk>true</jk>);
+ Address a = client.doPost(p.<jf>uri</jf> + <js>"/addresses"</js>, ca).getResponse(Address.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Created address "</js> + a.<jf>uri</jf>);
+
+ ca = <jk>new</jk> CreateAddress(<js>"1600 Pennsylvania Ave"</js>, <js>"Washington"</js>, <js>"DC"</js>, 20500, <jk>false</jk>);
+ a = client.doPost(p.<jf>uri</jf> + "/addresses"</js>, ca).getResponse(Address.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Created address "</js> + a.<jf>uri</jf>);
+
+ <jc>// Find 1st person, and change name</jc>
+ Person[] pp = client.doGet(root + <js>"?q={name:\"'Barack+Obama'\"}"</js>).getResponse(Person[].<jk>class</jk>);
+ String r = client.doPut(pp[0].<jf>uri</jf> + <js>"/name"</js>, <js>"Barack Hussein Obama"</js>).getResponse(String.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"Changed name, response = "</js> + r);
+ p = client.doGet(pp[0].<jf>uri</jf>).getResponse(Person.<jk>class</jk>);
+ System.<jsm>out</jsm>.println(<js>"New name = "</js> + p.<jf>name</jf>);
+ </p>
+ <h6 class='figure'>Results</h6>
+ <p class='bcode'>
+ Number of entries = 2
+ Deleted person Barack Obama, response = DELETE successful
+ Deleted person George Walker Bush, response = DELETE successful
+ Number of entries = 0
+ Created person Barack Obama, uri = http://localhost:9080/sample/addressBook/people/3
+ Created person George Walker Bush, uri = http://localhost:9080/sample/addressBook/people/4
+ Created address http://localhost:9080/sample/addressBook/addresses/7
+ Created address http://localhost:9080/sample/addressBook/addresses/8
+ Changed name, response = PUT successful
+ New name = Barack Hussein Obama
+ </p>
+ </div>
+</div>
+<p align="center"><i><b>*** f�n ***</b></i></p>
+
+</body>
+</html>
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+/*******************************************************************************
+ * Licensed Materials - Property of IBM
+ * � Copyright IBM Corporation 2014, 2015. All Rights Reserved.
+ *
+ * The source code for this program is not published or otherwise
+ * divested of its trade secrets, irrespective of what has been
+ * deposited with the U.S. Copyright Office.
+ *******************************************************************************/
+package com.ibm.juno.core.utils;
+
+import java.util.*;
+
+import com.ibm.juno.core.*;
+
+/**
+ * Utility class to make it easier to work with command-line arguments pass in through a <code>main(String[] args)</code> method.
+ * <p>
+ * Used to parse command-line arguments of the form <js>"[zero or more main arguments] [zero or more optional arguments]"</js>.
+ * <p>
+ * The format of a main argument is a token that does not start with <js>'-'</js>.
+ * <p>
+ * The format of an optional argument is <js>"-argName [zero or more tokens]"</js>.
+ * <p>
+ * <h6 class='topic'>Command-line examples</h6>
+ * <ul>
+ * <li><code>java com.sample.MyClass mainArg1</code>
+ * <li><code>java com.sample.MyClass mainArg1 mainArg2</code>
+ * <li><code>java com.sample.MyClass mainArg1 -optArg1</code>
+ * <li><code>java com.sample.MyClass -optArg1</code>
+ * <li><code>java com.sample.MyClass mainArg1 -optArg1 optArg1Val</code>
+ * <li><code>java com.sample.MyClass mainArg1 -optArg1 optArg1Val1 optArg1Val2</code>
+ * <li><code>java com.sample.MyClass mainArg1 -optArg1 optArg1Val1 -optArg1 optArg1Val2</code>
+ * </ul>
+ *
+ * <h6 class='topic'>Code examples</h6>
+ * <p class='bcode'>
+ *
+ * <jc>// Main method with arguments</jc>
+ * <jk>public static void</jk> <jsm>main</jsm>(String[] args) {
+ *
+ * <jc>// Wrap in Args</jc>
+ * Args a = new Args(args);
+ *
+ * <jc>// One main argument</jc>
+ * <jc>// a1</jc>
+ * String a1 = a.getArg(0); <jc>// "a1"</jc>
+ * String a2 = a.getArg(1); <jc>// null</jc>
+ *
+ * <jc>// Two main arguments</jc>
+ * <jc>// a1 a2</jc>
+ * String a1 = a.getArg(0); <jc>// "a1"</jc>
+ * String a2 = a.getArg(1); <jc>// "a2"</jc>
+ *
+ * <jc>// One main argument and one optional argument with no value</jc>
+ * <jc>// a1 -a2</jc>
+ * String a1 = a.getArg(0);
+ * <jk>boolean</jk> hasA2 = a.hasArg(<js>"a2"</js>); <jc>// true</jc>
+ * <jk>boolean</jk> hasA3 = a.hasArg(<js>"a3"</js>); <jc>// false</jc>
+ *
+ * <jc>// One main argument and one optional argument with one value</jc>
+ * <jc>// a1 -a2 v2</jc>
+ * String a1 = a.getArg(0);
+ * String a2 = a.getArg(<js>"a2"</js>); <jc>// "v2"</jc>
+ * String a3 = a.getArg(<js>"a3"</js>); <jc>// null</jc>
+ *
+ * <jc>// One main argument and one optional argument with two values</jc>
+ * <jc>// a1 -a2 v2a v2b</jc>
+ * String a1 = a.getArg(0);
+ * List<String> a2 = a.getArgs(<js>"a2"</js>); <jc>// Contains ["v2a","v2b"]</jc>
+ * List<String> a3 = a.getArgs(<js>"a3"</js>); <jc>// Empty list</jc>
+ *
+ * <jc>// Same as previous, except specify optional argument name multiple times</jc>
+ * <jc>// a1 -a2 v2a -a2 v2b</jc>
+ * String a1 = a.getArg(0);
+ * List<String> a2 = a.getArgs(<js>"a2"</js>); <jc>// Contains ["v2a","v2b"]</jc>
+ * }
+ * </p>
+ * <p>
+ * Main arguments are available through numeric string keys (e.g. <js>"0"</js>, <js>"1"</js>, ...).
+ * So you could use the {@link ObjectMap} API to convert main arguments directly to POJOs, such as an <code>Enum</code>
+ * <p class='bcode'>
+ * <jc>// Get 1st main argument as an Enum</jc>
+ * MyEnum e = a.get(MyEnum.<jk>class</jk>, <js>"0"</js>);
+ *
+ * <jc>// Get 1st main argument as an integer</jc>
+ * int i = a.get(<jk>int</jk>.<jk>class</jk>, <js>"0"</js>);
+ * </p>
+ * <p>
+ * Equivalent operations are available on optional arguments through the {@link #getArg(Class, String)} method.
+ *
+ * @author jbognar
+ */
+public final class Args extends ObjectMap {
+
+ private static final long serialVersionUID = 1L;
+
+ /**
+ * Constructor.
+ *
+ * @param args Arguments passed in through a <code>main(String[] args)</code> method.
+ */
+ public Args(String[] args) {
+ List<String> argList = new LinkedList<String>(Arrays.asList(args));
+
+ // Capture the main arguments.
+ Integer i = 0;
+ while (! argList.isEmpty()) {
+ String s = argList.get(0);
+ if (StringUtils.startsWith(s,'-'))
+ break;
+ put(i.toString(), argList.remove(0));
+ i++;
+ }
+
+ // Capture the mapped arguments.
+ String key = null;
+ while (! argList.isEmpty()) {
+ String s = argList.remove(0);
+ if (StringUtils.startsWith(s, '-')) {
+ key = s.substring(1);
+ if (key.matches("\\d*"))
+ throw new RuntimeException("Invalid optional key name '"+key+"'");
+ if (! containsKey(key))
+ put(key, new ObjectList());
+ } else {
+ ((ObjectList)get(key)).add(s);
+ }
+ }
+ }
+
+ /**
+ * Returns main argument at the specified index, or <jk>null</jk> if the index is out of range.
+ * <p>
+ * Can be used in conjuction with {@link #hasArg(int)} to check for existence of arg.
+ * <p class='bcode'>
+ * <jc>// Check for no arguments</jc>
+ * <jk>if</jk> (! args.hasArg(0))
+ * printUsageAndExit();
+ *
+ * <jc>// Get the first argument</jc>
+ * String firstArg = args.getArg(0);
+ * </p>
+ * <p>
+ * Since main arguments are stored as numeric keys, this method is essentially equivalent to...
+ * <p class='bcode'>
+ * <jc>// Check for no arguments</jc>
+ * <jk>if</jk> (! args.containsKey(<js>"0"</js>))
+ * printUsageAndExit();
+ *
+ * <jc>// Get the first argument</jc>
+ * String firstArg = args.getString("0");
+ * </p>
+ *
+ * @param i The index position of the main argument (zero-indexed).
+ * @return The main argument value, or <js>""</js> if argument doesn't exist at that position.
+ */
+ public String getArg(int i) {
+ return getString(Integer.toString(i));
+ }
+
+ /**
+ * Returns <jk>true</jk> if argument exists at specified index.
+ *
+ * @param i The zero-indexed position of the argument.
+ * @return <jk>true</jk> if argument exists at specified index.
+ */
+ public boolean hasArg(int i) {
+ return containsKey(Integer.toString(i));
+ }
+
+ /**
+ * Returns the optional argument value, or blank if the optional argument was not specified.
+ * <p>
+ * If the optional arg has multiple values, returns values as a comma-delimited list.
+ *
+ * @param name The optional argument name.
+ * @return The optional argument value, or blank if the optional argument was not specified.
+ */
+ public String getArg(String name) {
+ ObjectList l = (ObjectList)get(name);
+ if (l == null || l.size() == 0)
+ return null;
+ if (l.size() == 1)
+ return l.get(0).toString();
+ return Arrays.toString(l.toArray()).replaceAll("[\\[\\]]", "");
+ }
+
+ /**
+ * Returns the optional argument value converted to the specified object type.
+ * <p>
+ * If the optional arg has multiple values, returns only the first converted value.
+ *
+ * <dl>
+ * <dt>Example:</dt>
+ * <dd>
+ * <p class='bcode'>
+ * <jc>// Command: java com.sample.MyClass -verbose true -debug 5</jc>
+ * <jk>boolean</jk> b = args.getArg(<jk>boolean</jk>.<jk>class</jk>, <js>"verbose"</js>);
+ * <jk>int</jk> i = args.getArg(<jk>int</jk>.<jk>class</jk>, <js>"debug"</js>);
+ * </p>
+ * </dd>
+ * </dl>
+ *
+ * @param c The class type to convert the value to.
+ * @param <T> The class type to convert the value to.
+ * @param name The optional argument name.
+ * @return The optional argument value, or blank if the optional argument was not specified.
+ */
+ public <T> T getArg(Class<T> c, String name) {
+ ObjectList l = (ObjectList)get(name);
+ if (l == null || l.size() == 0)
+ return null;
+ return l.get(c, 0);
+ }
+
+ /**
+ * Returns the optional argument values as a list of strings.
+ *
+ * <dl>
+ * <dt>Example:</dt>
+ * <dd>
+ * <p class='bcode'>
+ * <jc>// Command: java com.sample.MyClass -extraArgs foo bar baz</jc>
+ * List<String> l1 = args.getArgs(<js>"extraArgs"</js>); <jc>// ['foo','bar','baz']</jc>
+ * List<String> l2 = args.getArgs(<js>"nonExistentArgs"</js>); <jc>// An empty list</jc>
+ * </p>
+ * </dd>
+ * </dl>
+ *
+ * @param name The optional argument name.
+ * @return The optional argument values, or an empty list if the optional argument was not specified.
+ */
+ @SuppressWarnings({"rawtypes", "unchecked"})
+ public List<String> getArgs(String name) {
+ List l = (ObjectList)get(name);
+ if (l == null)
+ return Collections.emptyList();
+ return l;
+ }
+}
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+/*******************************************************************************
+ * Licensed Materials - Property of IBM
+ * (c) Copyright IBM Corporation 2014, 2015. All Rights Reserved.
+ *
+ * The source code for this program is not published or otherwise
+ * divested of its trade secrets, irrespective of what has been
+ * deposited with the U.S. Copyright Office.
+ *******************************************************************************/
+package com.ibm.juno.core.utils;
+
+import static com.ibm.juno.core.utils.ThrowableUtils.*;
+
+import java.lang.reflect.*;
+import java.util.*;
+
+/**
+ * Quick and dirty utilities for working with arrays.
+ *
+ * @author James Bognar (jbognar@us.ibm.com)
+ */
+public final class ArrayUtils {
+
+ /**
+ * Appends one or more elements to an array.
+ *
+ * @param <T> The element type.
+ * @param array The array to append to.
+ * @param newElements The new elements to append to the array.
+ * @return A new array with the specified elements appended.
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> T[] append(T[] array, T...newElements) {
+ assertNotNull(array, "Array cannot be null.");
+ if (newElements.length == 0)
+ return array;
+ T[] a = (T[])Array.newInstance(array.getClass().getComponentType(), array.length + newElements.length);
+ for (int i = 0; i < array.length; i++)
+ a[i] = array[i];
+ for (int i = 0; i < newElements.length; i++)
+ a[i+array.length] = newElements[i];
+ return a;
+ }
+
+ /**
+ * Appends one or more elements to an array.
+ *
+ * @param <T> The element type.
+ * @param array The array to append to.
+ * @param newElements The new elements to append to the array.
+ * @return A new array with the specified elements appended.
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> T[] append(T[] array, Collection<T> newElements) {
+ assertFieldNotNull(array, "array");
+ if (newElements.size() == 0)
+ return array;
+ T[] a = (T[])Array.newInstance(array.getClass().getComponentType(), array.length + newElements.size());
+ for (int i = 0; i < array.length; i++)
+ a[i] = array[i];
+ int l = array.length;
+ for (T t : newElements)
+ a[l++] = t;
+ return a;
+ }
+
+ /**
+ * Combine an arbitrary number of arrays into a single array.
+ *
+ * @param arrays Collection of arrays to combine.
+ * @return A new combined array, or <jk>null</jk> if all arrays are <jk>null</jk>.
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> T[] combine(T[]...arrays) {
+ assertFieldNotNull(arrays, "arrays");
+ int l = 0;
+ T[] a1 = null;
+ for (T[] a : arrays) {
+ if (a1 == null && a != null)
+ a1 = a;
+ l += (a == null ? 0 : a.length);
+ }
+ if (a1 == null)
+ return null;
+ T[] a = (T[])Array.newInstance(a1.getClass().getComponentType(), l);
+ int i = 0;
+ for (T[] aa : arrays)
+ if (aa != null)
+ for (T t : aa)
+ a[i++] = t;
+ return a;
+ }
+
+ /**
+ * Creates a new array with reversed entries.
+ *
+ * @param <T> The class type of the array.
+ * @param array The array to reverse.
+ * @return A new array with reversed entries, or <jk>null</jk> if the array was <jk>null</jk>.
+ */
+ @SuppressWarnings("unchecked")
+ public static <T> T[] reverse(T[] array) {
+ assertFieldNotNull(array, "array");
+ Class<T> c = (Class<T>)array.getClass().getComponentType();
+ T[] a2 = (T[])Array.newInstance(c, array.length);
+ for (int i = 0; i < array.length; i++)
+ a2[a2.length-i-1] = array[i];
+ return a2;
+ }
+
+ /**
+ * Converts the specified array to a <code>Set</code>.
+ * <p>
+ * The order of the entries in the set are the same as the array.
+ *
+ * @param <T> The entry type of the array.
+ * @param array The array being wrapped in a <code>Set</code> interface.
+ * @return The new set.
+ */
+ public static <T> Set<T> asSet(final T[] array) {
+ assertFieldNotNull(array, "array");
+ return new AbstractSet<T>() {
+
+ @Override /* Set */
+ public Iterator<T> iterator() {
+ return new Iterator<T>() {
+ int i = 0;
+
+ @Override /* Iterator */
+ public boolean hasNext() {
+ return i < array.length;
+ }
+
+ @Override /* Iterator */
+ public T next() {
+ if (i >= array.length)
+ throw new NoSuchElementException();
+ T t = array[i];
+ i++;
+ return t;
+ }
+
+ @Override /* Iterator */
+ public void remove() {
+ throw new UnsupportedOperationException();
+ }
+ };
+ }
+
+ @Override /* Set */
+ public int size() {
+ return array.length;
+ }
+ };
+ }
+
+ /**
+ * Returns an iterator against an array.
+ * This works with any array type (e.g. <code>String[]</code>, <code>Object[]</code>, <code><jk>int</jk>[]</code>, etc...).
+ *
+ * @param array The array to create an iterator over.
+ * @return An iterator over the specified array.
+ */
+ public static Iterator<Object> iterator(final Object array) {
+ return new Iterator<Object>() {
+ int i = 0;
+ int length = array == null ? 0 : Array.getLength(array);
+
+ @Override /* Iterator */
+ public boolean hasNext() {
+ return i < length;
+ }
+
+ @Override /* Iterator */
+ public Object next() {
+ if (i >= length)
+ throw new NoSuchElementException();
+ return Array.get(array, i++);
+ }
+
+ @Override /* Iterator */
+ public void remove() {
+ throw new UnsupportedOperationException();
+ }
+ };
+ }
+
+ /**
+ * Converts the specified collection to an array.
+ * Works on both object and primitive arrays.
+ *
+ * @param c The collection to convert to an array.
+ * @param componentType The component type of the collection.
+ * @return A new array.
+ */
+ public static <T> Object toArray(Collection<T> c, Class<T> componentType) {
+ Object a = Array.newInstance(componentType, c.size());
+ Iterator<T> it = c.iterator();
+ int i = 0;
+ while (it.hasNext())
+ Array.set(a, i++, it.next());
+ return a;
+ }
+
+ /**
+ * Copies the specified array into the specified list.
+ * Works on both object and primitive arrays.
+ *
+ * @param array The array to copy into a list.
+ * @param list The list to copy the values into.
+ */
+ @SuppressWarnings({"unchecked","rawtypes"})
+ public static void copyToList(Object array, List list) {
+ if (array != null) {
+ int length = Array.getLength(array);
+ for (int i = 0; i < length; i++)
+ list.add(Array.get(array, i));
+ }
+ }
+
+ /**
+ * Returns <jk>true</jk> if the specified array contains the specified element
+ * using the {@link Object#equals(Object)} method.
+ *
+ * @param element The element to check for.
+ * @param array The array to check.
+ * @return <jk>true</jk> if the specified array contains the specified element,
+ * <jk>false</jk> if the array or element is <jk>null</jk>.
+ */
+ public static <T> boolean contains(T element, T[] array) {
+ return indexOf(element, array) != -1;
+ }
+
+ /**
+ * Returns the index position of the element in the specified array
+ * using the {@link Object#equals(Object)} method.
+ *
+ * @param element The element to check for.
+ * @param array The array to check.
+ * @return The index position of the element in the specified array, or
+ * <code>-1</code> if the array doesn't contain the element, or the array or element is <jk>null</jk>.
+ */
+ public static <T> int indexOf(T element, T[] array) {
+ if (element == null)
+ return -1;
+ if (array == null)
+ return -1;
+ for (int i = 0; i < array.length; i++)
+ if (element.equals(array[i]))
+ return i;
+ return -1;
+ }
+
+ /**
+ * Converts a primitive wrapper array (e.g. <code>Integer[]</code>) to a primitive array (e.g. <code><jk>int</jk>[]</code>).
+ *
+ * @param o The array to convert. Must be a primitive wrapper array.
+ * @return A new array.
+ * @throws IllegalArgumentException If object is not a wrapper object array.
+ */
+ public static Object toPrimitiveArray(Object o) {
+ Class<?> c = o.getClass();
+ if (! c.isArray())
+ throw new IllegalArgumentException("Cannot pass non-array objects to toPrimitiveArray()");
+ int l = Array.getLength(o);
+ Class<?> tc = ClassUtils.getPrimitiveForWrapper(c.getComponentType());
+ if (tc == null)
+ throw new IllegalArgumentException("Array type is not a primitive wrapper array.");
+ Object a = Array.newInstance(tc, l);
+ for (int i = 0; i < l; i++)
+ Array.set(a, i, Array.get(o, i));
+ return a;
+ }
+}
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