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<div class="subTitle">org.apache.hadoop.hive.ql.exec.vector</div>
<h2 title="Class UnionColumnVector" class="title">Class UnionColumnVector</h2>
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<li><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">org.apache.hadoop.hive.ql.exec.vector.ColumnVector</a></li>
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<pre>public class <span class="typeNameLabel">UnionColumnVector</span>
extends <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></pre>
<div class="block">The representation of a vectorized column of struct objects.

 Each field is represented by a separate inner ColumnVector. Since this
 ColumnVector doesn't own any per row data other that the isNull flag, the
 isRepeating only covers the isNull array.</div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.hadoop.hive.ql.exec.vector.<a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></h3>
<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.Type.html" title="enum in org.apache.hadoop.hive.ql.exec.vector">ColumnVector.Type</a></code></li>
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<caption><span>Fields</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#fields">fields</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>int[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#tags">tags</a></span></code>&nbsp;</td>
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<h3>Fields inherited from class&nbsp;org.apache.hadoop.hive.ql.exec.vector.<a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></h3>
<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#isNull">isNull</a>, <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#isRepeating">isRepeating</a>, <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#noNulls">noNulls</a></code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#UnionColumnVector--">UnionColumnVector</a></span>()</code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#UnionColumnVector-int-org.apache.hadoop.hive.ql.exec.vector.ColumnVector...-">UnionColumnVector</a></span>(int&nbsp;len,
                 <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a>...&nbsp;fields)</code>
<div class="block">Constructor for UnionColumnVector</div>
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<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#ensureSize-int-boolean-">ensureSize</a></span>(int&nbsp;size,
          boolean&nbsp;preserveData)</code>
<div class="block">Ensure the ColumnVector can hold at least size values.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#flatten-boolean-int:A-int-">flatten</a></span>(boolean&nbsp;selectedInUse,
       int[]&nbsp;sel,
       int&nbsp;size)</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#init--">init</a></span>()</code>
<div class="block">Initialize the column vector.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#reset--">reset</a></span>()</code>
<div class="block">Resets the column to default state
  - fills the isNull array with false
  - sets noNulls to true
  - sets isRepeating to false</div>
</td>
</tr>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#setElement-int-int-org.apache.hadoop.hive.ql.exec.vector.ColumnVector-">setElement</a></span>(int&nbsp;outElementNum,
          int&nbsp;inputElementNum,
          <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a>&nbsp;inputVector)</code>
<div class="block">Set the element in this column vector from the given input vector.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#setRepeating-boolean-">setRepeating</a></span>(boolean&nbsp;isRepeating)</code>
<div class="block">Sets the isRepeating flag.</div>
</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#stringifyValue-java.lang.StringBuilder-int-">stringifyValue</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;buffer,
              int&nbsp;row)</code>
<div class="block">Print the value for this column into the given string builder.</div>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/UnionColumnVector.html#unFlatten--">unFlatten</a></span>()</code>
<div class="block">Restore the state of isRepeating and noNulls to what it was
 before flattening.</div>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.hive.ql.exec.vector.<a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></h3>
<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#flattenNoNulls-boolean-int:A-int-">flattenNoNulls</a>, <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#flattenPush--">flattenPush</a>, <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#flattenRepeatingNulls-boolean-int:A-int-">flattenRepeatingNulls</a></code></li>
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<pre>public&nbsp;<a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a>[] fields</pre>
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<pre>public&nbsp;UnionColumnVector()</pre>
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<pre>public&nbsp;UnionColumnVector(int&nbsp;len,
                         <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a>...&nbsp;fields)</pre>
<div class="block">Constructor for UnionColumnVector</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>len</code> - Vector length</dd>
<dd><code>fields</code> - the field column vectors</dd>
</dl>
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<h4>flatten</h4>
<pre>public&nbsp;void&nbsp;flatten(boolean&nbsp;selectedInUse,
                    int[]&nbsp;sel,
                    int&nbsp;size)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#flatten-boolean-int:A-int-">flatten</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
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<h4>setElement</h4>
<pre>public&nbsp;void&nbsp;setElement(int&nbsp;outElementNum,
                       int&nbsp;inputElementNum,
                       <a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a>&nbsp;inputVector)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#setElement-int-int-org.apache.hadoop.hive.ql.exec.vector.ColumnVector-">ColumnVector</a></code></span></div>
<div class="block">Set the element in this column vector from the given input vector.
 This method can assume that the output does not have isRepeating set.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#setElement-int-int-org.apache.hadoop.hive.ql.exec.vector.ColumnVector-">setElement</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
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<h4>stringifyValue</h4>
<pre>public&nbsp;void&nbsp;stringifyValue(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/StringBuilder.html?is-external=true" title="class or interface in java.lang">StringBuilder</a>&nbsp;buffer,
                           int&nbsp;row)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#stringifyValue-java.lang.StringBuilder-int-">ColumnVector</a></code></span></div>
<div class="block">Print the value for this column into the given string builder.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#stringifyValue-java.lang.StringBuilder-int-">stringifyValue</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>buffer</code> - the buffer to print into</dd>
<dd><code>row</code> - the id of the row to print</dd>
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<h4>ensureSize</h4>
<pre>public&nbsp;void&nbsp;ensureSize(int&nbsp;size,
                       boolean&nbsp;preserveData)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#ensureSize-int-boolean-">ColumnVector</a></code></span></div>
<div class="block">Ensure the ColumnVector can hold at least size values.
 This method is deliberately *not* recursive because the complex types
 can easily have more (or less) children than the upper levels.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#ensureSize-int-boolean-">ensureSize</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>size</code> - the new minimum size</dd>
<dd><code>preserveData</code> - should the old data be preserved?</dd>
</dl>
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<h4>reset</h4>
<pre>public&nbsp;void&nbsp;reset()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#reset--">ColumnVector</a></code></span></div>
<div class="block">Resets the column to default state
  - fills the isNull array with false
  - sets noNulls to true
  - sets isRepeating to false</div>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#reset--">reset</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
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<h4>init</h4>
<pre>public&nbsp;void&nbsp;init()</pre>
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<div class="block">Initialize the column vector. This method can be overridden by specific column vector types.
 Use this method only if the individual type of the column vector is not known, otherwise its
 preferable to call specific initialization methods.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#init--">init</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
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<h4>unFlatten</h4>
<pre>public&nbsp;void&nbsp;unFlatten()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#unFlatten--">ColumnVector</a></code></span></div>
<div class="block">Restore the state of isRepeating and noNulls to what it was
 before flattening. This must only be called just after flattening
 and then evaluating a VectorExpression on the column vector.
 It is an optimization that allows other operations on the same
 column to continue to benefit from the isRepeating and noNulls
 indicators.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#unFlatten--">unFlatten</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
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<h4>setRepeating</h4>
<pre>public&nbsp;void&nbsp;setRepeating(boolean&nbsp;isRepeating)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#setRepeating-boolean-">ColumnVector</a></code></span></div>
<div class="block">Sets the isRepeating flag. Recurses over structs and unions so that the
 flags are set correctly.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html#setRepeating-boolean-">setRepeating</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../../../org/apache/hadoop/hive/ql/exec/vector/ColumnVector.html" title="class in org.apache.hadoop.hive.ql.exec.vector">ColumnVector</a></code></dd>
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