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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">org.apache.iceberg.arrow.vectorized</a></div>
<h2 title="Class VectorizedArrowReader" class="title">Class VectorizedArrowReader</h2>
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<ul class="inheritance">
<li>java.lang.Object</li>
<li>
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<li>org.apache.iceberg.arrow.vectorized.VectorizedArrowReader</li>
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<dt>All Implemented Interfaces:</dt>
<dd><code><a href="../../parquet/VectorizedReader.html" title="interface in org.apache.iceberg.parquet">VectorizedReader</a>&lt;<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&gt;</code></dd>
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<dl>
<dt>Direct Known Subclasses:</dt>
<dd><code><a href="VectorizedArrowReader.ConstantVectorReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader.ConstantVectorReader</a></code></dd>
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<hr>
<pre>public class <span class="typeNameLabel">VectorizedArrowReader</span>
extends java.lang.Object
implements <a href="../../parquet/VectorizedReader.html" title="interface in org.apache.iceberg.parquet">VectorizedReader</a>&lt;<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&gt;</pre>
<div class="block"><a href="../../parquet/VectorizedReader.html" title="interface in org.apache.iceberg.parquet"><code>VectorReader(s)</code></a> that read in a batch of values into Arrow vectors. It also takes care of
allocating the right kind of Arrow vectors depending on the corresponding Iceberg/Parquet data types.</div>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Class</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="VectorizedArrowReader.ConstantVectorReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader.ConstantVectorReader</a>&lt;<a href="VectorizedArrowReader.ConstantVectorReader.html" title="type parameter in VectorizedArrowReader.ConstantVectorReader">T</a>&gt;</span></code></th>
<td class="colLast">
<div class="block">A Dummy Vector Reader which doesn't actually read files, instead it returns a dummy
VectorHolder which indicates the constant value which should be used for this column.</div>
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<th class="colSecond" scope="col">Field</th>
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<td class="colFirst"><code>static int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#DEFAULT_BATCH_SIZE">DEFAULT_BATCH_SIZE</a></span></code></th>
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<th class="colFirst" scope="col">Constructor</th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.parquet.column.ColumnDescriptor,org.apache.iceberg.types.Types.NestedField,org.apache.arrow.memory.BufferAllocator,boolean)">VectorizedArrowReader</a></span>&#8203;(org.apache.parquet.column.ColumnDescriptor&nbsp;desc,
<a href="../../types/Types.NestedField.html" title="class in org.apache.iceberg.types">Types.NestedField</a>&nbsp;icebergField,
org.apache.arrow.memory.BufferAllocator&nbsp;ra,
boolean&nbsp;setArrowValidityVector)</code></th>
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<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#close()">close</a></span>()</code></th>
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<div class="block">Release any resources allocated.</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static <a href="VectorizedArrowReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#nulls()">nulls</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>static <a href="VectorizedArrowReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#positions()">positions</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>static <a href="VectorizedArrowReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#positionsWithSetArrowValidityVector()">positionsWithSetArrowValidityVector</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#read(org.apache.iceberg.arrow.vectorized.VectorHolder,int)">read</a></span>&#8203;(<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&nbsp;reuse,
int&nbsp;numValsToRead)</code></th>
<td class="colLast">
<div class="block">Reads a batch of type @param &lt;T&gt; and of size numRows</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setBatchSize(int)">setBatchSize</a></span>&#8203;(int&nbsp;batchSize)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>void</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#setRowGroupInfo(org.apache.parquet.column.page.PageReadStore,java.util.Map,long)">setRowGroupInfo</a></span>&#8203;(org.apache.parquet.column.page.PageReadStore&nbsp;source,
java.util.Map&lt;org.apache.parquet.hadoop.metadata.ColumnPath,&#8203;org.apache.parquet.hadoop.metadata.ColumnChunkMetaData&gt;&nbsp;metadata,
long&nbsp;rowPosition)</code></th>
<td class="colLast">
<div class="block">Sets the row group information to be used with this reader</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>java.lang.String</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toString()">toString</a></span>()</code></th>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
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<h4>DEFAULT_BATCH_SIZE</h4>
<pre>public static final&nbsp;int DEFAULT_BATCH_SIZE</pre>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../../constant-values.html#org.apache.iceberg.arrow.vectorized.VectorizedArrowReader.DEFAULT_BATCH_SIZE">Constant Field Values</a></dd>
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<h4>VectorizedArrowReader</h4>
<pre>public&nbsp;VectorizedArrowReader&#8203;(org.apache.parquet.column.ColumnDescriptor&nbsp;desc,
<a href="../../types/Types.NestedField.html" title="class in org.apache.iceberg.types">Types.NestedField</a>&nbsp;icebergField,
org.apache.arrow.memory.BufferAllocator&nbsp;ra,
boolean&nbsp;setArrowValidityVector)</pre>
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<h4>setBatchSize</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;setBatchSize&#8203;(int&nbsp;batchSize)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../parquet/VectorizedReader.html#setBatchSize(int)">setBatchSize</a></code>&nbsp;in interface&nbsp;<code><a href="../../parquet/VectorizedReader.html" title="interface in org.apache.iceberg.parquet">VectorizedReader</a>&lt;<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&gt;</code></dd>
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<h4>read</h4>
<pre class="methodSignature">public&nbsp;<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&nbsp;read&#8203;(<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&nbsp;reuse,
int&nbsp;numValsToRead)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../parquet/VectorizedReader.html#read(T,int)">VectorizedReader</a></code></span></div>
<div class="block">Reads a batch of type @param &lt;T&gt; and of size numRows</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../parquet/VectorizedReader.html#read(T,int)">read</a></code>&nbsp;in interface&nbsp;<code><a href="../../parquet/VectorizedReader.html" title="interface in org.apache.iceberg.parquet">VectorizedReader</a>&lt;<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>reuse</code> - container for the last batch to be reused for next batch</dd>
<dd><code>numValsToRead</code> - number of rows to read</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>batch of records of type @param &lt;T&gt;</dd>
</dl>
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<a id="setRowGroupInfo(org.apache.parquet.column.page.PageReadStore,java.util.Map,long)">
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<h4>setRowGroupInfo</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;setRowGroupInfo&#8203;(org.apache.parquet.column.page.PageReadStore&nbsp;source,
java.util.Map&lt;org.apache.parquet.hadoop.metadata.ColumnPath,&#8203;org.apache.parquet.hadoop.metadata.ColumnChunkMetaData&gt;&nbsp;metadata,
long&nbsp;rowPosition)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../parquet/VectorizedReader.html#setRowGroupInfo(org.apache.parquet.column.page.PageReadStore,java.util.Map,long)">VectorizedReader</a></code></span></div>
<div class="block">Sets the row group information to be used with this reader</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../parquet/VectorizedReader.html#setRowGroupInfo(org.apache.parquet.column.page.PageReadStore,java.util.Map,long)">setRowGroupInfo</a></code>&nbsp;in interface&nbsp;<code><a href="../../parquet/VectorizedReader.html" title="interface in org.apache.iceberg.parquet">VectorizedReader</a>&lt;<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>source</code> - row group information for all the columns</dd>
<dd><code>metadata</code> - map of <code>ColumnPath</code> -&gt; <code>ColumnChunkMetaData</code> for the row group</dd>
<dd><code>rowPosition</code> - the row group's row offset in the parquet file</dd>
</dl>
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<h4>close</h4>
<pre class="methodSignature">public&nbsp;void&nbsp;close()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../parquet/VectorizedReader.html#close()">VectorizedReader</a></code></span></div>
<div class="block">Release any resources allocated.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../parquet/VectorizedReader.html#close()">close</a></code>&nbsp;in interface&nbsp;<code><a href="../../parquet/VectorizedReader.html" title="interface in org.apache.iceberg.parquet">VectorizedReader</a>&lt;<a href="VectorHolder.html" title="class in org.apache.iceberg.arrow.vectorized">VectorHolder</a>&gt;</code></dd>
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<h4>toString</h4>
<pre class="methodSignature">public&nbsp;java.lang.String&nbsp;toString()</pre>
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<pre class="methodSignature">public static&nbsp;<a href="VectorizedArrowReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader</a>&nbsp;nulls()</pre>
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<h4>positions</h4>
<pre class="methodSignature">public static&nbsp;<a href="VectorizedArrowReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader</a>&nbsp;positions()</pre>
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<h4>positionsWithSetArrowValidityVector</h4>
<pre class="methodSignature">public static&nbsp;<a href="VectorizedArrowReader.html" title="class in org.apache.iceberg.arrow.vectorized">VectorizedArrowReader</a>&nbsp;positionsWithSetArrowValidityVector()</pre>
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