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| <pre>@InterfaceAudience.LimitedPrivate(value="Coprocesssor") |
| @InterfaceStability.Evolving |
| public interface <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/InternalScanner.html#line.46">InternalScanner</a> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></pre> |
| <div class="block">Internal scanners differ from client-side scanners in that they operate on |
| HStoreKeys and byte[] instead of RowResults. This is because they are |
| actually close to how the data is physically stored, and therefore it is more |
| convenient to interact with them that way. It is also much easier to merge |
| the results across SortedMaps than RowResults. |
| |
| <p>Additionally, we need to be able to determine if the scanner is doing |
| wildcard column matches (when only a column family is specified or if a |
| column regex is specified) or if multiple members of the same column family |
| were specified. If so, we need to ignore the timestamp to ensure that we get |
| all the family members, as they may have been last updated at different |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/InternalScanner.html#close--">close</a></span>()</code> |
| <div class="block">Closes the scanner and releases any resources it has allocated</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>default boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/InternalScanner.html#next-java.util.List-">next</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>> result)</code> |
| <div class="block">Grab the next row's worth of values.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/regionserver/InternalScanner.html#next-java.util.List-org.apache.hadoop.hbase.regionserver.ScannerContext-">next</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>> result, |
| <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScannerContext.html" title="class in org.apache.hadoop.hbase.regionserver">ScannerContext</a> scannerContext)</code> |
| <div class="block">Grab the next row's worth of values.</div> |
| </td> |
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| <pre>default boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/InternalScanner.html#line.53">next</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>> result) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Grab the next row's worth of values.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>result</code> - return output array</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if more rows exist after this one, false if scanner is done</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - e</dd> |
| </dl> |
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| <!-- --> |
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| <h4>next</h4> |
| <pre>boolean <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/InternalScanner.html#line.64">next</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a><<a href="../../../../../org/apache/hadoop/hbase/Cell.html" title="interface in org.apache.hadoop.hbase">Cell</a>> result, |
| <a href="../../../../../org/apache/hadoop/hbase/regionserver/ScannerContext.html" title="class in org.apache.hadoop.hbase.regionserver">ScannerContext</a> scannerContext) |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Grab the next row's worth of values.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>result</code> - return output array</dd> |
| <dd><code>scannerContext</code> - </dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if more rows exist after this one, false if scanner is done</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code> - e</dd> |
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| <h4>close</h4> |
| <pre>void <a href="../../../../../src-html/org/apache/hadoop/hbase/regionserver/InternalScanner.html#line.71">close</a>() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Closes the scanner and releases any resources it has allocated</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true#close--" title="class or interface in java.io">close</a></code> in interface <code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></code></dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
| </dl> |
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