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Posted to commits@hbase.apache.org by mi...@apache.org on 2016/02/01 17:57:41 UTC
[45/51] [partial] hbase-site git commit: Published site at
2cc48e039d1f800832ac8880bbc820982e0ac8a5.
http://git-wip-us.apache.org/repos/asf/hbase-site/blob/a7e5a8ce/apidocs/src-html/org/apache/hadoop/hbase/client/Scan.html
----------------------------------------------------------------------
diff --git a/apidocs/src-html/org/apache/hadoop/hbase/client/Scan.html b/apidocs/src-html/org/apache/hadoop/hbase/client/Scan.html
index cbdb963..b8b76ba 100644
--- a/apidocs/src-html/org/apache/hadoop/hbase/client/Scan.html
+++ b/apidocs/src-html/org/apache/hadoop/hbase/client/Scan.html
@@ -235,763 +235,765 @@
<span class="sourceLineNo">227</span> filter = scan.getFilter(); // clone?<a name="line.227"></a>
<span class="sourceLineNo">228</span> loadColumnFamiliesOnDemand = scan.getLoadColumnFamiliesOnDemandValue();<a name="line.228"></a>
<span class="sourceLineNo">229</span> consistency = scan.getConsistency();<a name="line.229"></a>
-<span class="sourceLineNo">230</span> reversed = scan.isReversed();<a name="line.230"></a>
-<span class="sourceLineNo">231</span> asyncPrefetch = scan.isAsyncPrefetch();<a name="line.231"></a>
-<span class="sourceLineNo">232</span> small = scan.isSmall();<a name="line.232"></a>
-<span class="sourceLineNo">233</span> allowPartialResults = scan.getAllowPartialResults();<a name="line.233"></a>
-<span class="sourceLineNo">234</span> TimeRange ctr = scan.getTimeRange();<a name="line.234"></a>
-<span class="sourceLineNo">235</span> tr = new TimeRange(ctr.getMin(), ctr.getMax());<a name="line.235"></a>
-<span class="sourceLineNo">236</span> Map<byte[], NavigableSet<byte[]>> fams = scan.getFamilyMap();<a name="line.236"></a>
-<span class="sourceLineNo">237</span> for (Map.Entry<byte[],NavigableSet<byte[]>> entry : fams.entrySet()) {<a name="line.237"></a>
-<span class="sourceLineNo">238</span> byte [] fam = entry.getKey();<a name="line.238"></a>
-<span class="sourceLineNo">239</span> NavigableSet<byte[]> cols = entry.getValue();<a name="line.239"></a>
-<span class="sourceLineNo">240</span> if (cols != null && cols.size() > 0) {<a name="line.240"></a>
-<span class="sourceLineNo">241</span> for (byte[] col : cols) {<a name="line.241"></a>
-<span class="sourceLineNo">242</span> addColumn(fam, col);<a name="line.242"></a>
-<span class="sourceLineNo">243</span> }<a name="line.243"></a>
-<span class="sourceLineNo">244</span> } else {<a name="line.244"></a>
-<span class="sourceLineNo">245</span> addFamily(fam);<a name="line.245"></a>
-<span class="sourceLineNo">246</span> }<a name="line.246"></a>
-<span class="sourceLineNo">247</span> }<a name="line.247"></a>
-<span class="sourceLineNo">248</span> for (Map.Entry<String, byte[]> attr : scan.getAttributesMap().entrySet()) {<a name="line.248"></a>
-<span class="sourceLineNo">249</span> setAttribute(attr.getKey(), attr.getValue());<a name="line.249"></a>
-<span class="sourceLineNo">250</span> }<a name="line.250"></a>
-<span class="sourceLineNo">251</span> for (Map.Entry<byte[], TimeRange> entry : scan.getColumnFamilyTimeRange().entrySet()) {<a name="line.251"></a>
-<span class="sourceLineNo">252</span> TimeRange tr = entry.getValue();<a name="line.252"></a>
-<span class="sourceLineNo">253</span> setColumnFamilyTimeRange(entry.getKey(), tr.getMin(), tr.getMax());<a name="line.253"></a>
-<span class="sourceLineNo">254</span> }<a name="line.254"></a>
-<span class="sourceLineNo">255</span> }<a name="line.255"></a>
-<span class="sourceLineNo">256</span><a name="line.256"></a>
-<span class="sourceLineNo">257</span> /**<a name="line.257"></a>
-<span class="sourceLineNo">258</span> * Builds a scan object with the same specs as get.<a name="line.258"></a>
-<span class="sourceLineNo">259</span> * @param get get to model scan after<a name="line.259"></a>
-<span class="sourceLineNo">260</span> */<a name="line.260"></a>
-<span class="sourceLineNo">261</span> public Scan(Get get) {<a name="line.261"></a>
-<span class="sourceLineNo">262</span> this.startRow = get.getRow();<a name="line.262"></a>
-<span class="sourceLineNo">263</span> this.stopRow = get.getRow();<a name="line.263"></a>
-<span class="sourceLineNo">264</span> this.filter = get.getFilter();<a name="line.264"></a>
-<span class="sourceLineNo">265</span> this.cacheBlocks = get.getCacheBlocks();<a name="line.265"></a>
-<span class="sourceLineNo">266</span> this.maxVersions = get.getMaxVersions();<a name="line.266"></a>
-<span class="sourceLineNo">267</span> this.storeLimit = get.getMaxResultsPerColumnFamily();<a name="line.267"></a>
-<span class="sourceLineNo">268</span> this.storeOffset = get.getRowOffsetPerColumnFamily();<a name="line.268"></a>
-<span class="sourceLineNo">269</span> this.tr = get.getTimeRange();<a name="line.269"></a>
-<span class="sourceLineNo">270</span> this.familyMap = get.getFamilyMap();<a name="line.270"></a>
-<span class="sourceLineNo">271</span> this.getScan = true;<a name="line.271"></a>
-<span class="sourceLineNo">272</span> this.asyncPrefetch = false;<a name="line.272"></a>
-<span class="sourceLineNo">273</span> this.consistency = get.getConsistency();<a name="line.273"></a>
-<span class="sourceLineNo">274</span> for (Map.Entry<String, byte[]> attr : get.getAttributesMap().entrySet()) {<a name="line.274"></a>
-<span class="sourceLineNo">275</span> setAttribute(attr.getKey(), attr.getValue());<a name="line.275"></a>
-<span class="sourceLineNo">276</span> }<a name="line.276"></a>
-<span class="sourceLineNo">277</span> for (Map.Entry<byte[], TimeRange> entry : get.getColumnFamilyTimeRange().entrySet()) {<a name="line.277"></a>
-<span class="sourceLineNo">278</span> TimeRange tr = entry.getValue();<a name="line.278"></a>
-<span class="sourceLineNo">279</span> setColumnFamilyTimeRange(entry.getKey(), tr.getMin(), tr.getMax());<a name="line.279"></a>
-<span class="sourceLineNo">280</span> }<a name="line.280"></a>
-<span class="sourceLineNo">281</span> }<a name="line.281"></a>
-<span class="sourceLineNo">282</span><a name="line.282"></a>
-<span class="sourceLineNo">283</span> public boolean isGetScan() {<a name="line.283"></a>
-<span class="sourceLineNo">284</span> return this.getScan || isStartRowAndEqualsStopRow();<a name="line.284"></a>
-<span class="sourceLineNo">285</span> }<a name="line.285"></a>
-<span class="sourceLineNo">286</span><a name="line.286"></a>
-<span class="sourceLineNo">287</span> private boolean isStartRowAndEqualsStopRow() {<a name="line.287"></a>
-<span class="sourceLineNo">288</span> return this.startRow != null && this.startRow.length > 0 &&<a name="line.288"></a>
-<span class="sourceLineNo">289</span> Bytes.equals(this.startRow, this.stopRow);<a name="line.289"></a>
-<span class="sourceLineNo">290</span> }<a name="line.290"></a>
-<span class="sourceLineNo">291</span> /**<a name="line.291"></a>
-<span class="sourceLineNo">292</span> * Get all columns from the specified family.<a name="line.292"></a>
-<span class="sourceLineNo">293</span> * <p><a name="line.293"></a>
-<span class="sourceLineNo">294</span> * Overrides previous calls to addColumn for this family.<a name="line.294"></a>
-<span class="sourceLineNo">295</span> * @param family family name<a name="line.295"></a>
-<span class="sourceLineNo">296</span> * @return this<a name="line.296"></a>
-<span class="sourceLineNo">297</span> */<a name="line.297"></a>
-<span class="sourceLineNo">298</span> public Scan addFamily(byte [] family) {<a name="line.298"></a>
-<span class="sourceLineNo">299</span> familyMap.remove(family);<a name="line.299"></a>
-<span class="sourceLineNo">300</span> familyMap.put(family, null);<a name="line.300"></a>
-<span class="sourceLineNo">301</span> return this;<a name="line.301"></a>
-<span class="sourceLineNo">302</span> }<a name="line.302"></a>
-<span class="sourceLineNo">303</span><a name="line.303"></a>
-<span class="sourceLineNo">304</span> /**<a name="line.304"></a>
-<span class="sourceLineNo">305</span> * Get the column from the specified family with the specified qualifier.<a name="line.305"></a>
-<span class="sourceLineNo">306</span> * <p><a name="line.306"></a>
-<span class="sourceLineNo">307</span> * Overrides previous calls to addFamily for this family.<a name="line.307"></a>
-<span class="sourceLineNo">308</span> * @param family family name<a name="line.308"></a>
-<span class="sourceLineNo">309</span> * @param qualifier column qualifier<a name="line.309"></a>
-<span class="sourceLineNo">310</span> * @return this<a name="line.310"></a>
-<span class="sourceLineNo">311</span> */<a name="line.311"></a>
-<span class="sourceLineNo">312</span> public Scan addColumn(byte [] family, byte [] qualifier) {<a name="line.312"></a>
-<span class="sourceLineNo">313</span> NavigableSet<byte []> set = familyMap.get(family);<a name="line.313"></a>
-<span class="sourceLineNo">314</span> if(set == null) {<a name="line.314"></a>
-<span class="sourceLineNo">315</span> set = new TreeSet<byte []>(Bytes.BYTES_COMPARATOR);<a name="line.315"></a>
-<span class="sourceLineNo">316</span> }<a name="line.316"></a>
-<span class="sourceLineNo">317</span> if (qualifier == null) {<a name="line.317"></a>
-<span class="sourceLineNo">318</span> qualifier = HConstants.EMPTY_BYTE_ARRAY;<a name="line.318"></a>
-<span class="sourceLineNo">319</span> }<a name="line.319"></a>
-<span class="sourceLineNo">320</span> set.add(qualifier);<a name="line.320"></a>
-<span class="sourceLineNo">321</span> familyMap.put(family, set);<a name="line.321"></a>
-<span class="sourceLineNo">322</span> return this;<a name="line.322"></a>
-<span class="sourceLineNo">323</span> }<a name="line.323"></a>
-<span class="sourceLineNo">324</span><a name="line.324"></a>
-<span class="sourceLineNo">325</span> /**<a name="line.325"></a>
-<span class="sourceLineNo">326</span> * Get versions of columns only within the specified timestamp range,<a name="line.326"></a>
-<span class="sourceLineNo">327</span> * [minStamp, maxStamp). Note, default maximum versions to return is 1. If<a name="line.327"></a>
-<span class="sourceLineNo">328</span> * your time range spans more than one version and you want all versions<a name="line.328"></a>
-<span class="sourceLineNo">329</span> * returned, up the number of versions beyond the default.<a name="line.329"></a>
-<span class="sourceLineNo">330</span> * @param minStamp minimum timestamp value, inclusive<a name="line.330"></a>
-<span class="sourceLineNo">331</span> * @param maxStamp maximum timestamp value, exclusive<a name="line.331"></a>
-<span class="sourceLineNo">332</span> * @see #setMaxVersions()<a name="line.332"></a>
-<span class="sourceLineNo">333</span> * @see #setMaxVersions(int)<a name="line.333"></a>
-<span class="sourceLineNo">334</span> * @return this<a name="line.334"></a>
-<span class="sourceLineNo">335</span> */<a name="line.335"></a>
-<span class="sourceLineNo">336</span> public Scan setTimeRange(long minStamp, long maxStamp) throws IOException {<a name="line.336"></a>
-<span class="sourceLineNo">337</span> tr = new TimeRange(minStamp, maxStamp);<a name="line.337"></a>
-<span class="sourceLineNo">338</span> return this;<a name="line.338"></a>
-<span class="sourceLineNo">339</span> }<a name="line.339"></a>
-<span class="sourceLineNo">340</span><a name="line.340"></a>
-<span class="sourceLineNo">341</span> /**<a name="line.341"></a>
-<span class="sourceLineNo">342</span> * Get versions of columns with the specified timestamp. Note, default maximum<a name="line.342"></a>
-<span class="sourceLineNo">343</span> * versions to return is 1. If your time range spans more than one version<a name="line.343"></a>
-<span class="sourceLineNo">344</span> * and you want all versions returned, up the number of versions beyond the<a name="line.344"></a>
-<span class="sourceLineNo">345</span> * defaut.<a name="line.345"></a>
-<span class="sourceLineNo">346</span> * @param timestamp version timestamp<a name="line.346"></a>
-<span class="sourceLineNo">347</span> * @see #setMaxVersions()<a name="line.347"></a>
-<span class="sourceLineNo">348</span> * @see #setMaxVersions(int)<a name="line.348"></a>
-<span class="sourceLineNo">349</span> * @return this<a name="line.349"></a>
-<span class="sourceLineNo">350</span> */<a name="line.350"></a>
-<span class="sourceLineNo">351</span> public Scan setTimeStamp(long timestamp)<a name="line.351"></a>
-<span class="sourceLineNo">352</span> throws IOException {<a name="line.352"></a>
-<span class="sourceLineNo">353</span> try {<a name="line.353"></a>
-<span class="sourceLineNo">354</span> tr = new TimeRange(timestamp, timestamp+1);<a name="line.354"></a>
-<span class="sourceLineNo">355</span> } catch(Exception e) {<a name="line.355"></a>
-<span class="sourceLineNo">356</span> // This should never happen, unless integer overflow or something extremely wrong...<a name="line.356"></a>
-<span class="sourceLineNo">357</span> LOG.error("TimeRange failed, likely caused by integer overflow. ", e);<a name="line.357"></a>
-<span class="sourceLineNo">358</span> throw e;<a name="line.358"></a>
-<span class="sourceLineNo">359</span> }<a name="line.359"></a>
-<span class="sourceLineNo">360</span> return this;<a name="line.360"></a>
-<span class="sourceLineNo">361</span> }<a name="line.361"></a>
-<span class="sourceLineNo">362</span><a name="line.362"></a>
-<span class="sourceLineNo">363</span> @Override public Scan setColumnFamilyTimeRange(byte[] cf, long minStamp, long maxStamp) {<a name="line.363"></a>
-<span class="sourceLineNo">364</span> return (Scan) super.setColumnFamilyTimeRange(cf, minStamp, maxStamp);<a name="line.364"></a>
-<span class="sourceLineNo">365</span> }<a name="line.365"></a>
-<span class="sourceLineNo">366</span><a name="line.366"></a>
-<span class="sourceLineNo">367</span> /**<a name="line.367"></a>
-<span class="sourceLineNo">368</span> * Set the start row of the scan.<a name="line.368"></a>
-<span class="sourceLineNo">369</span> * <p><a name="line.369"></a>
-<span class="sourceLineNo">370</span> * If the specified row does not exist, the Scanner will start from the<a name="line.370"></a>
-<span class="sourceLineNo">371</span> * next closest row after the specified row.<a name="line.371"></a>
-<span class="sourceLineNo">372</span> * @param startRow row to start scanner at or after<a name="line.372"></a>
-<span class="sourceLineNo">373</span> * @return this<a name="line.373"></a>
-<span class="sourceLineNo">374</span> */<a name="line.374"></a>
-<span class="sourceLineNo">375</span> public Scan setStartRow(byte [] startRow) {<a name="line.375"></a>
-<span class="sourceLineNo">376</span> this.startRow = startRow;<a name="line.376"></a>
-<span class="sourceLineNo">377</span> return this;<a name="line.377"></a>
-<span class="sourceLineNo">378</span> }<a name="line.378"></a>
-<span class="sourceLineNo">379</span><a name="line.379"></a>
-<span class="sourceLineNo">380</span> /**<a name="line.380"></a>
-<span class="sourceLineNo">381</span> * Set the stop row of the scan.<a name="line.381"></a>
-<span class="sourceLineNo">382</span> * @param stopRow row to end at (exclusive)<a name="line.382"></a>
-<span class="sourceLineNo">383</span> * <p><a name="line.383"></a>
-<span class="sourceLineNo">384</span> * The scan will include rows that are lexicographically less than<a name="line.384"></a>
-<span class="sourceLineNo">385</span> * the provided stopRow.<a name="line.385"></a>
-<span class="sourceLineNo">386</span> * <p><b>Note:</b> When doing a filter for a rowKey <u>Prefix</u><a name="line.386"></a>
-<span class="sourceLineNo">387</span> * use {@link #setRowPrefixFilter(byte[])}.<a name="line.387"></a>
-<span class="sourceLineNo">388</span> * The 'trailing 0' will not yield the desired result.</p><a name="line.388"></a>
-<span class="sourceLineNo">389</span> * @return this<a name="line.389"></a>
-<span class="sourceLineNo">390</span> */<a name="line.390"></a>
-<span class="sourceLineNo">391</span> public Scan setStopRow(byte [] stopRow) {<a name="line.391"></a>
-<span class="sourceLineNo">392</span> this.stopRow = stopRow;<a name="line.392"></a>
-<span class="sourceLineNo">393</span> return this;<a name="line.393"></a>
-<span class="sourceLineNo">394</span> }<a name="line.394"></a>
-<span class="sourceLineNo">395</span><a name="line.395"></a>
-<span class="sourceLineNo">396</span> /**<a name="line.396"></a>
-<span class="sourceLineNo">397</span> * <p>Set a filter (using stopRow and startRow) so the result set only contains rows where the<a name="line.397"></a>
-<span class="sourceLineNo">398</span> * rowKey starts with the specified prefix.</p><a name="line.398"></a>
-<span class="sourceLineNo">399</span> * <p>This is a utility method that converts the desired rowPrefix into the appropriate values<a name="line.399"></a>
-<span class="sourceLineNo">400</span> * for the startRow and stopRow to achieve the desired result.</p><a name="line.400"></a>
-<span class="sourceLineNo">401</span> * <p>This can safely be used in combination with setFilter.</p><a name="line.401"></a>
-<span class="sourceLineNo">402</span> * <p><b>NOTE: Doing a {@link #setStartRow(byte[])} and/or {@link #setStopRow(byte[])}<a name="line.402"></a>
-<span class="sourceLineNo">403</span> * after this method will yield undefined results.</b></p><a name="line.403"></a>
-<span class="sourceLineNo">404</span> * @param rowPrefix the prefix all rows must start with. (Set <i>null</i> to remove the filter.)<a name="line.404"></a>
-<span class="sourceLineNo">405</span> * @return this<a name="line.405"></a>
-<span class="sourceLineNo">406</span> */<a name="line.406"></a>
-<span class="sourceLineNo">407</span> public Scan setRowPrefixFilter(byte[] rowPrefix) {<a name="line.407"></a>
-<span class="sourceLineNo">408</span> if (rowPrefix == null) {<a name="line.408"></a>
-<span class="sourceLineNo">409</span> setStartRow(HConstants.EMPTY_START_ROW);<a name="line.409"></a>
-<span class="sourceLineNo">410</span> setStopRow(HConstants.EMPTY_END_ROW);<a name="line.410"></a>
-<span class="sourceLineNo">411</span> } else {<a name="line.411"></a>
-<span class="sourceLineNo">412</span> this.setStartRow(rowPrefix);<a name="line.412"></a>
-<span class="sourceLineNo">413</span> this.setStopRow(calculateTheClosestNextRowKeyForPrefix(rowPrefix));<a name="line.413"></a>
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-<span class="sourceLineNo">415</span> return this;<a name="line.415"></a>
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-<span class="sourceLineNo">417</span><a name="line.417"></a>
-<span class="sourceLineNo">418</span> /**<a name="line.418"></a>
-<span class="sourceLineNo">419</span> * <p>When scanning for a prefix the scan should stop immediately after the the last row that<a name="line.419"></a>
-<span class="sourceLineNo">420</span> * has the specified prefix. This method calculates the closest next rowKey immediately following<a name="line.420"></a>
-<span class="sourceLineNo">421</span> * the given rowKeyPrefix.</p><a name="line.421"></a>
-<span class="sourceLineNo">422</span> * <p><b>IMPORTANT: This converts a rowKey<u>Prefix</u> into a rowKey</b>.</p><a name="line.422"></a>
-<span class="sourceLineNo">423</span> * <p>If the prefix is an 'ASCII' string put into a byte[] then this is easy because you can<a name="line.423"></a>
-<span class="sourceLineNo">424</span> * simply increment the last byte of the array.<a name="line.424"></a>
-<span class="sourceLineNo">425</span> * But if your application uses real binary rowids you may run into the scenario that your<a name="line.425"></a>
-<span class="sourceLineNo">426</span> * prefix is something like:</p><a name="line.426"></a>
-<span class="sourceLineNo">427</span> * &nbsp;&nbsp;&nbsp;<b>{ 0x12, 0x23, 0xFF, 0xFF }</b><br/><a name="line.427"></a>
-<span class="sourceLineNo">428</span> * Then this stopRow needs to be fed into the actual scan<br/><a name="line.428"></a>
-<span class="sourceLineNo">429</span> * &nbsp;&nbsp;&nbsp;<b>{ 0x12, 0x24 }</b> (Notice that it is shorter now)<br/><a name="line.429"></a>
-<span class="sourceLineNo">430</span> * This method calculates the correct stop row value for this usecase.<a name="line.430"></a>
-<span class="sourceLineNo">431</span> *<a name="line.431"></a>
-<span class="sourceLineNo">432</span> * @param rowKeyPrefix the rowKey<u>Prefix</u>.<a name="line.432"></a>
-<span class="sourceLineNo">433</span> * @return the closest next rowKey immediately following the given rowKeyPrefix.<a name="line.433"></a>
-<span class="sourceLineNo">434</span> */<a name="line.434"></a>
-<span class="sourceLineNo">435</span> private byte[] calculateTheClosestNextRowKeyForPrefix(byte[] rowKeyPrefix) {<a name="line.435"></a>
-<span class="sourceLineNo">436</span> // Essentially we are treating it like an 'unsigned very very long' and doing +1 manually.<a name="line.436"></a>
-<span class="sourceLineNo">437</span> // Search for the place where the trailing 0xFFs start<a name="line.437"></a>
-<span class="sourceLineNo">438</span> int offset = rowKeyPrefix.length;<a name="line.438"></a>
-<span class="sourceLineNo">439</span> while (offset > 0) {<a name="line.439"></a>
-<span class="sourceLineNo">440</span> if (rowKeyPrefix[offset - 1] != (byte) 0xFF) {<a name="line.440"></a>
-<span class="sourceLineNo">441</span> break;<a name="line.441"></a>
-<span class="sourceLineNo">442</span> }<a name="line.442"></a>
-<span class="sourceLineNo">443</span> offset--;<a name="line.443"></a>
-<span class="sourceLineNo">444</span> }<a name="line.444"></a>
-<span class="sourceLineNo">445</span><a name="line.445"></a>
-<span class="sourceLineNo">446</span> if (offset == 0) {<a name="line.446"></a>
-<span class="sourceLineNo">447</span> // We got an 0xFFFF... (only FFs) stopRow value which is<a name="line.447"></a>
-<span class="sourceLineNo">448</span> // the last possible prefix before the end of the table.<a name="line.448"></a>
-<span class="sourceLineNo">449</span> // So set it to stop at the 'end of the table'<a name="line.449"></a>
-<span class="sourceLineNo">450</span> return HConstants.EMPTY_END_ROW;<a name="line.450"></a>
-<span class="sourceLineNo">451</span> }<a name="line.451"></a>
-<span class="sourceLineNo">452</span><a name="line.452"></a>
-<span class="sourceLineNo">453</span> // Copy the right length of the original<a name="line.453"></a>
-<span class="sourceLineNo">454</span> byte[] newStopRow = Arrays.copyOfRange(rowKeyPrefix, 0, offset);<a name="line.454"></a>
-<span class="sourceLineNo">455</span> // And increment the last one<a name="line.455"></a>
-<span class="sourceLineNo">456</span> newStopRow[newStopRow.length - 1]++;<a name="line.456"></a>
-<span class="sourceLineNo">457</span> return newStopRow;<a name="line.457"></a>
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+<span class="sourceLineNo">327</span> /**<a name="line.327"></a>
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+<span class="sourceLineNo">329</span> * [minStamp, maxStamp). Note, default maximum versions to return is 1. If<a name="line.329"></a>
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+<span class="sourceLineNo">331</span> * returned, up the number of versions beyond the default.<a name="line.331"></a>
+<span class="sourceLineNo">332</span> * @param minStamp minimum timestamp value, inclusive<a name="line.332"></a>
+<span class="sourceLineNo">333</span> * @param maxStamp maximum timestamp value, exclusive<a name="line.333"></a>
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+<span class="sourceLineNo">340</span> return this;<a name="line.340"></a>
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+<span class="sourceLineNo">346</span> * and you want all versions returned, up the number of versions beyond the<a name="line.346"></a>
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+<span class="sourceLineNo">348</span> * @param timestamp version timestamp<a name="line.348"></a>
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+<span class="sourceLineNo">352</span> */<a name="line.352"></a>
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+<span class="sourceLineNo">354</span> throws IOException {<a name="line.354"></a>
+<span class="sourceLineNo">355</span> try {<a name="line.355"></a>
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+<span class="sourceLineNo">357</span> } catch(Exception e) {<a name="line.357"></a>
+<span class="sourceLineNo">358</span> // This should never happen, unless integer overflow or something extremely wrong...<a name="line.358"></a>
+<span class="sourceLineNo">359</span> LOG.error("TimeRange failed, likely caused by integer overflow. ", e);<a name="line.359"></a>
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+<span class="sourceLineNo">362</span> return this;<a name="line.362"></a>
+<span class="sourceLineNo">363</span> }<a name="line.363"></a>
+<span class="sourceLineNo">364</span><a name="line.364"></a>
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+<span class="sourceLineNo">366</span> return (Scan) super.setColumnFamilyTimeRange(cf, minStamp, maxStamp);<a name="line.366"></a>
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+<span class="sourceLineNo">368</span><a name="line.368"></a>
+<span class="sourceLineNo">369</span> /**<a name="line.369"></a>
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+<span class="sourceLineNo">371</span> * <p><a name="line.371"></a>
+<span class="sourceLineNo">372</span> * If the specified row does not exist, the Scanner will start from the<a name="line.372"></a>
+<span class="sourceLineNo">373</span> * next closest row after the specified row.<a name="line.373"></a>
+<span class="sourceLineNo">374</span> * @param startRow row to start scanner at or after<a name="line.374"></a>
+<span class="sourceLineNo">375</span> * @return this<a name="line.375"></a>
+<span class="sourceLineNo">376</span> */<a name="line.376"></a>
+<span class="sourceLineNo">377</span> public Scan setStartRow(byte [] startRow) {<a name="line.377"></a>
+<span class="sourceLineNo">378</span> this.startRow = startRow;<a name="line.378"></a>
+<span class="sourceLineNo">379</span> return this;<a name="line.379"></a>
+<span class="sourceLineNo">380</span> }<a name="line.380"></a>
+<span class="sourceLineNo">381</span><a name="line.381"></a>
+<span class="sourceLineNo">382</span> /**<a name="line.382"></a>
+<span class="sourceLineNo">383</span> * Set the stop row of the scan.<a name="line.383"></a>
+<span class="sourceLineNo">384</span> * @param stopRow row to end at (exclusive)<a name="line.384"></a>
+<span class="sourceLineNo">385</span> * <p><a name="line.385"></a>
+<span class="sourceLineNo">386</span> * The scan will include rows that are lexicographically less than<a name="line.386"></a>
+<span class="sourceLineNo">387</span> * the provided stopRow.<a name="line.387"></a>
+<span class="sourceLineNo">388</span> * <p><b>Note:</b> When doing a filter for a rowKey <u>Prefix</u><a name="line.388"></a>
+<span class="sourceLineNo">389</span> * use {@link #setRowPrefixFilter(byte[])}.<a name="line.389"></a>
+<span class="sourceLineNo">390</span> * The 'trailing 0' will not yield the desired result.</p><a name="line.390"></a>
+<span class="sourceLineNo">391</span> * @return this<a name="line.391"></a>
+<span class="sourceLineNo">392</span> */<a name="line.392"></a>
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+<span class="sourceLineNo">394</span> this.stopRow = stopRow;<a name="line.394"></a>
+<span class="sourceLineNo">395</span> return this;<a name="line.395"></a>
+<span class="sourceLineNo">396</span> }<a name="line.396"></a>
+<span class="sourceLineNo">397</span><a name="line.397"></a>
+<span class="sourceLineNo">398</span> /**<a name="line.398"></a>
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+<span class="sourceLineNo">400</span> * rowKey starts with the specified prefix.</p><a name="line.400"></a>
+<span class="sourceLineNo">401</span> * <p>This is a utility method that converts the desired rowPrefix into the appropriate values<a name="line.401"></a>
+<span class="sourceLineNo">402</span> * for the startRow and stopRow to achieve the desired result.</p><a name="line.402"></a>
+<span class="sourceLineNo">403</span> * <p>This can safely be used in combination with setFilter.</p><a name="line.403"></a>
+<span class="sourceLineNo">404</span> * <p><b>NOTE: Doing a {@link #setStartRow(byte[])} and/or {@link #setStopRow(byte[])}<a name="line.404"></a>
+<span class="sourceLineNo">405</span> * after this method will yield undefined results.</b></p><a name="line.405"></a>
+<span class="sourceLineNo">406</span> * @param rowPrefix the prefix all rows must start with. (Set <i>null</i> to remove the filter.)<a name="line.406"></a>
+<span class="sourceLineNo">407</span> * @return this<a name="line.407"></a>
+<span class="sourceLineNo">408</span> */<a name="line.408"></a>
+<span class="sourceLineNo">409</span> public Scan setRowPrefixFilter(byte[] rowPrefix) {<a name="line.409"></a>
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+<span class="sourceLineNo">411</span> setStartRow(HConstants.EMPTY_START_ROW);<a name="line.411"></a>
+<span class="sourceLineNo">412</span> setStopRow(HConstants.EMPTY_END_ROW);<a name="line.412"></a>
+<span class="sourceLineNo">413</span> } else {<a name="line.413"></a>
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+<span class="sourceLineNo">415</span> this.setStopRow(calculateTheClosestNextRowKeyForPrefix(rowPrefix));<a name="line.415"></a>
+<span class="sourceLineNo">416</span> }<a name="line.416"></a>
+<span class="sourceLineNo">417</span> return this;<a name="line.417"></a>
+<span class="sourceLineNo">418</span> }<a name="line.418"></a>
+<span class="sourceLineNo">419</span><a name="line.419"></a>
+<span class="sourceLineNo">420</span> /**<a name="line.420"></a>
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+<span class="sourceLineNo">422</span> * has the specified prefix. This method calculates the closest next rowKey immediately following<a name="line.422"></a>
+<span class="sourceLineNo">423</span> * the given rowKeyPrefix.</p><a name="line.423"></a>
+<span class="sourceLineNo">424</span> * <p><b>IMPORTANT: This converts a rowKey<u>Prefix</u> into a rowKey</b>.</p><a name="line.424"></a>
+<span class="sourceLineNo">425</span> * <p>If the prefix is an 'ASCII' string put into a byte[] then this is easy because you can<a name="line.425"></a>
+<span class="sourceLineNo">426</span> * simply increment the last byte of the array.<a name="line.426"></a>
+<span class="sourceLineNo">427</span> * But if your application uses real binary rowids you may run into the scenario that your<a name="line.427"></a>
+<span class="sourceLineNo">428</span> * prefix is something like:</p><a name="line.428"></a>
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+<span class="sourceLineNo">430</span> * Then this stopRow needs to be fed into the actual scan<br/><a name="line.430"></a>
+<span class="sourceLineNo">431</span> * &nbsp;&nbsp;&nbsp;<b>{ 0x12, 0x24 }</b> (Notice that it is shorter now)<br/><a name="line.431"></a>
+<span class="sourceLineNo">432</span> * This method calculates the correct stop row value for this usecase.<a name="line.432"></a>
+<span class="sourceLineNo">433</span> *<a name="line.433"></a>
+<span class="sourceLineNo">434</span> * @param rowKeyPrefix the rowKey<u>Prefix</u>.<a name="line.434"></a>
+<span class="sourceLineNo">435</span> * @return the closest next rowKey immediately following the given rowKeyPrefix.<a name="line.435"></a>
+<span class="sourceLineNo">436</span> */<a name="line.436"></a>
+<span class="sourceLineNo">437</span> private byte[] calculateTheClosestNextRowKeyForPrefix(byte[] rowKeyPrefix) {<a name="line.437"></a>
+<span class="sourceLineNo">438</span> // Essentially we are treating it like an 'unsigned very very long' and doing +1 manually.<a name="line.438"></a>
+<span class="sourceLineNo">439</span> // Search for the place where the trailing 0xFFs start<a name="line.439"></a>
+<span class="sourceLineNo">440</span> int offset = rowKeyPrefix.length;<a name="line.440"></a>
+<span class="sourceLineNo">441</span> while (offset > 0) {<a name="line.441"></a>
+<span class="sourceLineNo">442</span> if (rowKeyPrefix[offset - 1] != (byte) 0xFF) {<a name="line.442"></a>
+<span class="sourceLineNo">443</span> break;<a name="line.443"></a>
+<span class="sourceLineNo">444</span> }<a name="line.444"></a>
+<span class="sourceLineNo">445</span> offset--;<a name="line.445"></a>
+<span class="sourceLineNo">446</span> }<a name="line.446"></a>
+<span class="sourceLineNo">447</span><a name="line.447"></a>
+<span class="sourceLineNo">448</span> if (offset == 0) {<a name="line.448"></a>
+<span class="sourceLineNo">449</span> // We got an 0xFFFF... (only FFs) stopRow value which is<a name="line.449"></a>
+<span class="sourceLineNo">450</span> // the last possible prefix before the end of the table.<a name="line.450"></a>
+<span class="sourceLineNo">451</span> // So set it to stop at the 'end of the table'<a name="line.451"></a>
+<span class="sourceLineNo">452</span> return HConstants.EMPTY_END_ROW;<a name="line.452"></a>
+<span class="sourceLineNo">453</span> }<a name="line.453"></a>
+<span class="sourceLineNo">454</span><a name="line.454"></a>
+<span class="sourceLineNo">455</span> // Copy the right length of the original<a name="line.455"></a>
+<span class="sourceLineNo">456</span> byte[] newStopRow = Arrays.copyOfRange(rowKeyPrefix, 0, offset);<a name="line.456"></a>
+<span class="sourceLineNo">457</span> // And increment the last one<a name="line.457"></a>
+<span class="sourceLineNo">458</span> newStopRow[newStopRow.length - 1]++;<a name="line.458"></a>
+<span class="sourceLineNo">459</span> return newStopRow;<a name="line.459"></a>
+<span class="sourceLineNo">460</span> }<a name="line.460"></a>
+<span class="sourceLineNo">461</span><a name="line.461"></a>
+<span class="sourceLineNo">462</span> /**<a name="line.462"></a>
+<span class="sourceLineNo">463</span> * Get all available versions.<a name="line.463"></a>
+<span class="sourceLineNo">464</span> * @return this<a name="line.464"></a>
+<span class="sourceLineNo">465</span> */<a name="line.465"></a>
+<span class="sourceLineNo">466</span> public Scan setMaxVersions() {<a name="line.466"></a>
+<span class="sourceLineNo">467</span> this.maxVersions = Integer.MAX_VALUE;<a name="line.467"></a>
+<span class="sourceLineNo">468</span> return this;<a name="line.468"></a>
+<span class="sourceLineNo">469</span> }<a name="line.469"></a>
+<span class="sourceLineNo">470</span><a name="line.470"></a>
+<span class="sourceLineNo">471</span> /**<a name="line.471"></a>
+<span class="sourceLineNo">472</span> * Get up to the specified number of versions of each column.<a name="line.472"></a>
+<span class="sourceLineNo">473</span> * @param maxVersions maximum versions for each column<a name="line.473"></a>
+<span class="sourceLineNo">474</span> * @return this<a name="line.474"></a>
+<span class="sourceLineNo">475</span> */<a name="line.475"></a>
+<span class="sourceLineNo">476</span> public Scan setMaxVersions(int maxVersions) {<a name="line.476"></a>
+<span class="sourceLineNo">477</span> this.maxVersions = maxVersions;<a name="line.477"></a>
+<span class="sourceLineNo">478</span> return this;<a name="line.478"></a>
+<span class="sourceLineNo">479</span> }<a name="line.479"></a>
+<span class="sourceLineNo">480</span><a name="line.480"></a>
+<span class="sourceLineNo">481</span> /**<a name="line.481"></a>
+<span class="sourceLineNo">482</span> * Set the maximum number of values to return for each call to next()<a name="line.482"></a>
+<span class="sourceLineNo">483</span> * @param batch the maximum number of values<a name="line.483"></a>
+<span class="sourceLineNo">484</span> */<a name="line.484"></a>
+<span class="sourceLineNo">485</span> public Scan setBatch(int batch) {<a name="line.485"></a>
+<span class="sourceLineNo">486</span> if (this.hasFilter() && this.filter.hasFilterRow()) {<a name="line.486"></a>
+<span class="sourceLineNo">487</span> throw new IncompatibleFilterException(<a name="line.487"></a>
+<span class="sourceLineNo">488</span> "Cannot set batch on a scan using a filter" +<a name="line.488"></a>
+<span class="sourceLineNo">489</span> " that returns true for filter.hasFilterRow");<a name="line.489"></a>
+<span class="sourceLineNo">490</span> }<a name="line.490"></a>
+<span class="sourceLineNo">491</span> this.batch = batch;<a name="line.491"></a>
+<span class="sourceLineNo">492</span> return this;<a name="line.492"></a>
+<span class="sourceLineNo">493</span> }<a name="line.493"></a>
+<span class="sourceLineNo">494</span><a name="line.494"></a>
+<span class="sourceLineNo">495</span> /**<a name="line.495"></a>
+<span class="sourceLineNo">496</span> * Set the maximum number of values to return per row per Column Family<a name="line.496"></a>
+<span class="sourceLineNo">497</span> * @param limit the maximum number of values returned / row / CF<a name="line.497"></a>
+<span class="sourceLineNo">498</span> */<a name="line.498"></a>
+<span class="sourceLineNo">499</span> public Scan setMaxResultsPerColumnFamily(int limit) {<a name="line.499"></a>
+<span class="sourceLineNo">500</span> this.storeLimit = limit;<a name="line.500"></a>
+<span class="sourceLineNo">501</span> return this;<a name="line.501"></a>
+<span class="sourceLineNo">502</span> }<a name="line.502"></a>
+<span class="sourceLineNo">503</span><a name="line.503"></a>
+<span class="sourceLineNo">504</span> /**<a name="line.504"></a>
+<span class="sourceLineNo">505</span> * Set offset for the row per Column Family.<a name="line.505"></a>
+<span class="sourceLineNo">506</span> * @param offset is the number of kvs that will be skipped.<a name="line.506"></a>
+<span class="sourceLineNo">507</span> */<a name="line.507"></a>
+<span class="sourceLineNo">508</span> public Scan setRowOffsetPerColumnFamily(int offset) {<a name="line.508"></a>
+<span class="sourceLineNo">509</span> this.storeOffset = offset;<a name="line.509"></a>
+<span class="sourceLineNo">510</span> return this;<a name="line.510"></a>
+<span class="sourceLineNo">511</span> }<a name="line.511"></a>
+<span class="sourceLineNo">512</span><a name="line.512"></a>
+<span class="sourceLineNo">513</span> /**<a name="line.513"></a>
+<span class="sourceLineNo">514</span> * Set the number of rows for caching that will be passed to scanners.<a name="line.514"></a>
+<span class="sourceLineNo">515</span> * If not set, the Configuration setting {@link HConstants#HBASE_CLIENT_SCANNER_CACHING} will<a name="line.515"></a>
+<span class="sourceLineNo">516</span> * apply.<a name="line.516"></a>
+<span class="sourceLineNo">517</span> * Higher caching values will enable faster scanners but will use more memory.<a name="line.517"></a>
+<span class="sourceLineNo">518</span> * @param caching the number of rows for c
<TRUNCATED>