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<h2 title="Uses of Class org.apache.drill.exec.store.parquet.columnreaders.ColumnReader" class="title">Uses of Class<br>org.apache.drill.exec.store.parquet.columnreaders.ColumnReader</h2>
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<div class="classUseContainer">
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing packages, and an explanation">
<caption><span>Packages that use <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Package</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.drill.exec.store.parquet.columnreaders">org.apache.drill.exec.store.parquet.columnreaders</a></td>
<td class="colLast">&nbsp;</td>
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<h3>Uses of <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a> in <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/package-summary.html">org.apache.drill.exec.store.parquet.columnreaders</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing subclasses, and an explanation">
<caption><span>Subclasses of <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a> in <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/package-summary.html">org.apache.drill.exec.store.parquet.columnreaders</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/FixedWidthRepeatedReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">FixedWidthRepeatedReader</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.CorruptionDetectingNullableDateReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">NullableFixedByteAlignedReaders.CorruptionDetectingNullableDateReader</a></span></code>
<div class="block">Old versions of Drill were writing a non-standard format for date.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.NullableCorruptDateReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">NullableFixedByteAlignedReaders.NullableCorruptDateReader</a></span></code>
<div class="block">Old versions of Drill were writing a non-standard format for date.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.NullableDateReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">NullableFixedByteAlignedReaders.NullableDateReader</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/NullableFixedByteAlignedReaders.NullableIntervalReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">NullableFixedByteAlignedReaders.NullableIntervalReader</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/NullableVarLengthValuesColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">NullableVarLengthValuesColumn</a>&lt;V extends <a href="../../../../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a>&gt;</span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthColumn</a>&lt;V extends <a href="../../../../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a>&gt;</span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.NullableVarBinaryColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthColumnReaders.NullableVarBinaryColumn</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.NullableVarCharColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthColumnReaders.NullableVarCharColumn</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.NullableVarDecimalColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthColumnReaders.NullableVarDecimalColumn</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.VarBinaryColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthColumnReaders.VarBinaryColumn</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.VarCharColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthColumnReaders.VarCharColumn</a></span></code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthColumnReaders.VarDecimalColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthColumnReaders.VarDecimalColumn</a></span></code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/VarLengthValuesColumn.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">VarLengthValuesColumn</a>&lt;V extends <a href="../../../../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a>&gt;</span></code>&nbsp;</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/package-summary.html">org.apache.drill.exec.store.parquet.columnreaders</a> that return <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a>&lt;?&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">ReadState.</span><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ReadState.html#getFirstColumnReader--">getFirstColumnReader</a></span>()</code>
<div class="block">Several readers use the first column reader to get information about the whole
record or group (such as row count.)</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>static <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a>&lt;?&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">ColumnReaderFactory.</span><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReaderFactory.html#getNullableColumnReader-org.apache.drill.exec.store.parquet.columnreaders.ParquetRecordReader-org.apache.parquet.column.ColumnDescriptor-org.apache.parquet.hadoop.metadata.ColumnChunkMetaData-boolean-org.apache.drill.exec.vector.ValueVector-org.apache.parquet.format.SchemaElement-">getNullableColumnReader</a></span>(<a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ParquetRecordReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ParquetRecordReader</a>&nbsp;parentReader,
org.apache.parquet.column.ColumnDescriptor&nbsp;columnDescriptor,
org.apache.parquet.hadoop.metadata.ColumnChunkMetaData&nbsp;columnChunkMetaData,
boolean&nbsp;fixedLength,
<a href="../../../../../../../../org/apache/drill/exec/vector/ValueVector.html" title="interface in org.apache.drill.exec.vector">ValueVector</a>&nbsp;valueVec,
org.apache.parquet.format.SchemaElement&nbsp;schemaElement)</code>&nbsp;</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/package-summary.html">org.apache.drill.exec.store.parquet.columnreaders</a> that return types with arguments of type <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code><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>&lt;<a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a>&lt;?&gt;&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">ReadState.</span><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ReadState.html#getFixedLenColumnReaders--">getFixedLenColumnReaders</a></span>()</code>&nbsp;</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/package-summary.html">org.apache.drill.exec.store.parquet.columnreaders</a> with parameters of type <a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>protected abstract int</code></td>
<td class="colLast"><span class="typeNameLabel">BatchReader.</span><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/BatchReader.html#readRecords-org.apache.drill.exec.store.parquet.columnreaders.ColumnReader-long-">readRecords</a></span>(<a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a>&lt;?&gt;&nbsp;firstColumnStatus,
long&nbsp;recordsToRead)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><span class="typeNameLabel">BatchReader.MockBatchReader.</span><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/BatchReader.MockBatchReader.html#readRecords-org.apache.drill.exec.store.parquet.columnreaders.ColumnReader-long-">readRecords</a></span>(<a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a>&lt;?&gt;&nbsp;firstColumnStatus,
long&nbsp;recordsToRead)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><span class="typeNameLabel">BatchReader.FixedWidthReader.</span><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/BatchReader.FixedWidthReader.html#readRecords-org.apache.drill.exec.store.parquet.columnreaders.ColumnReader-long-">readRecords</a></span>(<a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a>&lt;?&gt;&nbsp;firstColumnStatus,
long&nbsp;recordsToRead)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><span class="typeNameLabel">BatchReader.VariableWidthReader.</span><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/BatchReader.VariableWidthReader.html#readRecords-org.apache.drill.exec.store.parquet.columnreaders.ColumnReader-long-">readRecords</a></span>(<a href="../../../../../../../../org/apache/drill/exec/store/parquet/columnreaders/ColumnReader.html" title="class in org.apache.drill.exec.store.parquet.columnreaders">ColumnReader</a>&lt;?&gt;&nbsp;firstColumnStatus,
long&nbsp;recordsToRead)</code>&nbsp;</td>
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