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| <div class="subTitle">org.apache.orc.impl.writer</div> |
| <h2 title="Interface TreeWriter" class="title">Interface TreeWriter</h2> |
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| <dt>All Known Implementing Classes:</dt> |
| <dd><a href="../../../../../org/apache/orc/impl/writer/BinaryTreeWriter.html" title="class in org.apache.orc.impl.writer">BinaryTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/BooleanTreeWriter.html" title="class in org.apache.orc.impl.writer">BooleanTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/ByteTreeWriter.html" title="class in org.apache.orc.impl.writer">ByteTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/CharTreeWriter.html" title="class in org.apache.orc.impl.writer">CharTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/DateTreeWriter.html" title="class in org.apache.orc.impl.writer">DateTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/Decimal64TreeWriter.html" title="class in org.apache.orc.impl.writer">Decimal64TreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/DecimalTreeWriter.html" title="class in org.apache.orc.impl.writer">DecimalTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/DoubleTreeWriter.html" title="class in org.apache.orc.impl.writer">DoubleTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/EncryptionTreeWriter.html" title="class in org.apache.orc.impl.writer">EncryptionTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/FloatTreeWriter.html" title="class in org.apache.orc.impl.writer">FloatTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/IntegerTreeWriter.html" title="class in org.apache.orc.impl.writer">IntegerTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/ListTreeWriter.html" title="class in org.apache.orc.impl.writer">ListTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/MapTreeWriter.html" title="class in org.apache.orc.impl.writer">MapTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/StringBaseTreeWriter.html" title="class in org.apache.orc.impl.writer">StringBaseTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/StringTreeWriter.html" title="class in org.apache.orc.impl.writer">StringTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/StructTreeWriter.html" title="class in org.apache.orc.impl.writer">StructTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/TimestampTreeWriter.html" title="class in org.apache.orc.impl.writer">TimestampTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/TreeWriterBase.html" title="class in org.apache.orc.impl.writer">TreeWriterBase</a>, <a href="../../../../../org/apache/orc/impl/writer/UnionTreeWriter.html" title="class in org.apache.orc.impl.writer">UnionTreeWriter</a>, <a href="../../../../../org/apache/orc/impl/writer/VarcharTreeWriter.html" title="class in org.apache.orc.impl.writer">VarcharTreeWriter</a></dd> |
| </dl> |
| <hr> |
| <br> |
| <pre>public interface <span class="typeNameLabel">TreeWriter</span></pre> |
| <div class="block">The writers for the specific writers of each type. This provides |
| the generic API that they must all implement.</div> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Interface and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.Factory.html" title="class in org.apache.orc.impl.writer">TreeWriter.Factory</a></span></code> </td> |
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| <h3>Method Summary</h3> |
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| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#addStripeStatistics-org.apache.orc.StripeStatistics:A-">addStripeStatistics</a></span>(<a href="../../../../../org/apache/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>[] stripeStatistics)</code> |
| <div class="block">During a stripe append, we need to handle the stripe statistics.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#createRowIndexEntry--">createRowIndexEntry</a></span>()</code> |
| <div class="block">Create a row index entry at the current point in the stripe.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#estimateMemory--">estimateMemory</a></span>()</code> |
| <div class="block">Estimate the memory currently used to buffer the stripe.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#flushStreams--">flushStreams</a></span>()</code> |
| <div class="block">Flush the TreeWriter stream</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#getCurrentStatistics-org.apache.orc.ColumnStatistics:A-">getCurrentStatistics</a></span>(<a href="../../../../../org/apache/orc/ColumnStatistics.html" title="interface in org.apache.orc">ColumnStatistics</a>[] output)</code> |
| <div class="block">Get the current file statistics for each column.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>long</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#getRawDataSize--">getRawDataSize</a></span>()</code> |
| <div class="block">Estimate the memory used if the file was read into Hive's Writable |
| types.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#prepareStripe-int-">prepareStripe</a></span>(int stripeId)</code> |
| <div class="block">Set up for the next stripe.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#writeBatch-org.apache.hadoop.hive.ql.exec.vector.ColumnVector-int-int-">writeBatch</a></span>(<a href="http://orc.apache.org/api/hive-storage-api/org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html?is-external=true" title="class or interface in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a> vector, |
| int offset, |
| int length)</code> |
| <div class="block">Write a ColumnVector to the file.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#writeFileStatistics--">writeFileStatistics</a></span>()</code> |
| <div class="block">Write the FileStatistics for each column in each encryption variant.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#writeRootBatch-org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch-int-int-">writeRootBatch</a></span>(<a href="http://orc.apache.org/api/hive-storage-api/org/apache/hadoop/hive/ql/exec/vector/VectorizedRowBatch.html?is-external=true" title="class or interface in org.apache.hadoop.hive.ql.exec.vector">VectorizedRowBatch</a> batch, |
| int offset, |
| int length)</code> |
| <div class="block">Write a VectorizedRowBath to the file.</div> |
| </td> |
| </tr> |
| <tr id="i10" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/orc/impl/writer/TreeWriter.html#writeStripe-int-">writeStripe</a></span>(int requiredIndexEntries)</code> |
| <div class="block">Write the stripe out to the file.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
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| <li class="blockList"> |
| <!-- ============ METHOD DETAIL ========== --> |
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| </a> |
| <h3>Method Detail</h3> |
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| <h4>estimateMemory</h4> |
| <pre>long estimateMemory()</pre> |
| <div class="block">Estimate the memory currently used to buffer the stripe.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the number of bytes</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="getRawDataSize--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>getRawDataSize</h4> |
| <pre>long getRawDataSize()</pre> |
| <div class="block">Estimate the memory used if the file was read into Hive's Writable |
| types. This is used as an estimate for the query optimizer.</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the number of bytes</dd> |
| </dl> |
| </li> |
| </ul> |
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| <h4>prepareStripe</h4> |
| <pre>void prepareStripe(int stripeId)</pre> |
| <div class="block">Set up for the next stripe.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>stripeId</code> - the next stripe id</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="writeRootBatch-org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch-int-int-"> |
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| <h4>writeRootBatch</h4> |
| <pre>void writeRootBatch(<a href="http://orc.apache.org/api/hive-storage-api/org/apache/hadoop/hive/ql/exec/vector/VectorizedRowBatch.html?is-external=true" title="class or interface in org.apache.hadoop.hive.ql.exec.vector">VectorizedRowBatch</a> batch, |
| int offset, |
| int length) |
| throws <a href="http://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">Write a VectorizedRowBath to the file. This is called by the WriterImplV2 |
| at the top level.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>batch</code> - the list of all of the columns</dd> |
| <dd><code>offset</code> - the first row from the batch to write</dd> |
| <dd><code>length</code> - the number of rows to write</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://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> |
| </li> |
| </ul> |
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| </a> |
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| <h4>writeBatch</h4> |
| <pre>void writeBatch(<a href="http://orc.apache.org/api/hive-storage-api/org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html?is-external=true" title="class or interface in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a> vector, |
| int offset, |
| int length) |
| throws <a href="http://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">Write a ColumnVector to the file. This is called recursively by |
| writeRootBatch.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>vector</code> - the data to write</dd> |
| <dd><code>offset</code> - the first value offset to write.</dd> |
| <dd><code>length</code> - the number of values to write</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://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> |
| </li> |
| </ul> |
| <a name="createRowIndexEntry--"> |
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| </a> |
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| <h4>createRowIndexEntry</h4> |
| <pre>void createRowIndexEntry() |
| throws <a href="http://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">Create a row index entry at the current point in the stripe.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://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> |
| </li> |
| </ul> |
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| </a> |
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| <h4>flushStreams</h4> |
| <pre>void flushStreams() |
| throws <a href="http://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">Flush the TreeWriter stream</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://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> |
| </li> |
| </ul> |
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| <h4>writeStripe</h4> |
| <pre>void writeStripe(int requiredIndexEntries) |
| throws <a href="http://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">Write the stripe out to the file.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>requiredIndexEntries</code> - the number of index entries that are |
| required. this is to check to make sure the |
| row index is well formed.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://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> |
| </li> |
| </ul> |
| <a name="addStripeStatistics-org.apache.orc.StripeStatistics:A-"> |
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| </a> |
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| <h4>addStripeStatistics</h4> |
| <pre>void addStripeStatistics(<a href="../../../../../org/apache/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>[] stripeStatistics) |
| throws <a href="http://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">During a stripe append, we need to handle the stripe statistics.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>stripeStatistics</code> - the statistics for the new stripe across the |
| encryption variants</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://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> |
| </li> |
| </ul> |
| <a name="writeFileStatistics--"> |
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| </a> |
| <ul class="blockList"> |
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| <h4>writeFileStatistics</h4> |
| <pre>void writeFileStatistics() |
| throws <a href="http://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">Write the FileStatistics for each column in each encryption variant.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="http://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> |
| </li> |
| </ul> |
| <a name="getCurrentStatistics-org.apache.orc.ColumnStatistics:A-"> |
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| </a> |
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| <h4>getCurrentStatistics</h4> |
| <pre>void getCurrentStatistics(<a href="../../../../../org/apache/orc/ColumnStatistics.html" title="interface in org.apache.orc">ColumnStatistics</a>[] output)</pre> |
| <div class="block">Get the current file statistics for each column. If a column is encrypted, |
| the encrypted variant statistics are used.</div> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>output</code> - an array that is filled in with the results</dd> |
| </dl> |
| </li> |
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