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<div class="subTitle">org.apache.orc</div>
<h2 title="Interface Reader" class="title">Interface Reader</h2>
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<dt>All Superinterfaces:</dt>
<dd><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>, <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></dd>
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<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../org/apache/orc/impl/ReaderImpl.html" title="class in org.apache.orc.impl">ReaderImpl</a></dd>
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<pre>public interface <span class="typeNameLabel">Reader</span>
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">The interface for reading ORC files.
 <p>
 One Reader can support multiple concurrent RecordReader.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
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<caption><span>Nested Classes</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<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&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.Options.html" title="class in org.apache.orc">Reader.Options</a></span></code>
<div class="block">Options for creating a RecordReader.</div>
</td>
</tr>
</table>
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<h3>Method Summary</h3>
<table class="memberSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t6" class="tableTab"><span><a href="javascript:show(32);">Deprecated Methods</a></span><span class="tabEnd">&nbsp;</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><a href="../../../org/apache/orc/EncryptionKey.html" title="interface in org.apache.orc">EncryptionKey</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getColumnEncryptionKeys--">getColumnEncryptionKeys</a></span>()</code>
<div class="block">Get the list of encryption keys for column encryption.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/CompressionKind.html" title="enum in org.apache.orc">CompressionKind</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getCompressionKind--">getCompressionKind</a></span>()</code>
<div class="block">Get the compression kind.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getCompressionSize--">getCompressionSize</a></span>()</code>
<div class="block">Get the buffer size for the compression.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getContentLength--">getContentLength</a></span>()</code>
<div class="block">Get the length of the file.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getConvertToProlepticGregorian--">getConvertToProlepticGregorian</a></span>()</code>
<div class="block">Should the returned values use the proleptic Gregorian calendar?</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/DataMaskDescription.html" title="interface in org.apache.orc">DataMaskDescription</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getDataMasks--">getDataMasks</a></span>()</code>
<div class="block">Get the data masks for the unencrypted variant of the data.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/EncryptionVariant.html" title="interface in org.apache.orc">EncryptionVariant</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getEncryptionVariants--">getEncryptionVariants</a></span>()</code>
<div class="block">Get the list of encryption variants for the data.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.FileTail.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.FileTail</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getFileTail--">getFileTail</a></span>()</code>
<div class="block">Get the file tail (footer + postscript)</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/OrcFile.Version.html" title="enum in org.apache.orc">OrcFile.Version</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getFileVersion--">getFileVersion</a></span>()</code>
<div class="block">Get the file format version.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getMetadataKeys--">getMetadataKeys</a></span>()</code>
<div class="block">Get the user metadata keys.</div>
</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getMetadataSize--">getMetadataSize</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getMetadataValue-java.lang.String-">getMetadataValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</code>
<div class="block">Get a user metadata value.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getNumberOfRows--">getNumberOfRows</a></span>()</code>
<div class="block">Get the number of rows in the file.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<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="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.ColumnStatistics.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.ColumnStatistics</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getOrcProtoFileStatistics--">getOrcProtoFileStatistics</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../org/apache/orc/Reader.html#getStatistics--"><code>getStatistics()</code></a> instead.</span></div>
</div>
</td>
</tr>
<tr id="i14" 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="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.StripeStatistics.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.StripeStatistics</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getOrcProtoStripeStatistics--">getOrcProtoStripeStatistics</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../org/apache/orc/Reader.html#getStripeStatistics--"><code>getStripeStatistics()</code></a> instead.</span></div>
</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getRawDataSize--">getRawDataSize</a></span>()</code>
<div class="block">Get the deserialized data size of the file</div>
</td>
</tr>
<tr id="i16" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getRawDataSizeFromColIndices-java.util.List-">getRawDataSizeFromColIndices</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>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;colIds)</code>
<div class="block">Get the deserialized data size of the specified columns ids</div>
</td>
</tr>
<tr id="i17" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getRawDataSizeOfColumns-java.util.List-">getRawDataSizeOfColumns</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>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;colNames)</code>
<div class="block">Get the deserialized data size of the specified columns</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getRowIndexStride--">getRowIndexStride</a></span>()</code>
<div class="block">Get the number of rows per a entry in the row index.</div>
</td>
</tr>
<tr id="i19" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getSchema--">getSchema</a></span>()</code>
<div class="block">Get the type of rows in this ORC file.</div>
</td>
</tr>
<tr id="i20" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getSerializedFileFooter--">getSerializedFileFooter</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i21" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getSoftwareVersion--">getSoftwareVersion</a></span>()</code>
<div class="block">Get the implementation and version of the software that wrote the file.</div>
</td>
</tr>
<tr id="i22" class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/ColumnStatistics.html" title="interface in org.apache.orc">ColumnStatistics</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getStatistics--">getStatistics</a></span>()</code>
<div class="block">Get the statistics about the columns in the file.</div>
</td>
</tr>
<tr id="i23" class="rowColor">
<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/orc/StripeInformation.html" title="interface in org.apache.orc">StripeInformation</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getStripes--">getStripes</a></span>()</code>
<div class="block">Get the list of stripes.</div>
</td>
</tr>
<tr id="i24" 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/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getStripeStatistics--">getStripeStatistics</a></span>()</code>
<div class="block">Get the stripe statistics for all of the columns.</div>
</td>
</tr>
<tr id="i25" class="rowColor">
<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/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getStripeStatistics-boolean:A-">getStripeStatistics</a></span>(boolean[]&nbsp;include)</code>
<div class="block">Get the stripe statistics from the file.</div>
</td>
</tr>
<tr id="i26" 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="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.Type.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.Type</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getTypes--">getTypes</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">use getSchema instead</span></div>
</div>
</td>
</tr>
<tr id="i27" class="rowColor">
<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/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getVariantStripeStatistics-org.apache.orc.EncryptionVariant-">getVariantStripeStatistics</a></span>(<a href="../../../org/apache/orc/EncryptionVariant.html" title="interface in org.apache.orc">EncryptionVariant</a>&nbsp;variant)</code>
<div class="block">Get the stripe statistics for a given variant.</div>
</td>
</tr>
<tr id="i28" 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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getVersionList--">getVersionList</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i29" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/OrcFile.WriterVersion.html" title="enum in org.apache.orc">OrcFile.WriterVersion</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#getWriterVersion--">getWriterVersion</a></span>()</code>
<div class="block">Get the version of the writer of this file.</div>
</td>
</tr>
<tr id="i30" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#hasMetadataValue-java.lang.String-">hasMetadataValue</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</code>
<div class="block">Did the user set the given metadata value.</div>
</td>
</tr>
<tr id="i31" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/Reader.Options.html" title="class in org.apache.orc">Reader.Options</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#options--">options</a></span>()</code>
<div class="block">Create a default options object that can be customized for creating
 a RecordReader.</div>
</td>
</tr>
<tr id="i32" class="altColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/RecordReader.html" title="interface in org.apache.orc">RecordReader</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#rows--">rows</a></span>()</code>
<div class="block">Create a RecordReader that reads everything with the default options.</div>
</td>
</tr>
<tr id="i33" class="rowColor">
<td class="colFirst"><code><a href="../../../org/apache/orc/RecordReader.html" title="interface in org.apache.orc">RecordReader</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#rows-org.apache.orc.Reader.Options-">rows</a></span>(<a href="../../../org/apache/orc/Reader.Options.html" title="class in org.apache.orc">Reader.Options</a>&nbsp;options)</code>
<div class="block">Create a RecordReader that uses the options given.</div>
</td>
</tr>
<tr id="i34" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/Reader.html#writerUsedProlepticGregorian--">writerUsedProlepticGregorian</a></span>()</code>
<div class="block">Was the file written using the proleptic Gregorian calendar.</div>
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<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></li>
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<pre>long&nbsp;getNumberOfRows()</pre>
<div class="block">Get the number of rows in the file.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of rows</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
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<pre>long&nbsp;getRawDataSize()</pre>
<div class="block">Get the deserialized data size of the file</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>raw data size</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre>long&nbsp;getRawDataSizeOfColumns(<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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;colNames)</pre>
<div class="block">Get the deserialized data size of the specified columns</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>colNames</code> - the list of column names</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>raw data size of columns</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre>long&nbsp;getRawDataSizeFromColIndices(<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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;colIds)</pre>
<div class="block">Get the deserialized data size of the specified columns ids</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>colIds</code> - - internal column id (check orcfiledump for column ids)</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>raw data size of columns</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<h4>getMetadataKeys</h4>
<pre><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="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&gt;&nbsp;getMetadataKeys()</pre>
<div class="block">Get the user metadata keys.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the set of metadata keys</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a>&nbsp;getMetadataValue(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</pre>
<div class="block">Get a user metadata value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - a key given by the user</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the bytes associated with the given key</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
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<pre>boolean&nbsp;hasMetadataValue(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;key)</pre>
<div class="block">Did the user set the given metadata value.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>key</code> - the key to check</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the metadata value was set</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
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<pre><a href="../../../org/apache/orc/CompressionKind.html" title="enum in org.apache.orc">CompressionKind</a>&nbsp;getCompressionKind()</pre>
<div class="block">Get the compression kind.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the kind of compression in the file</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre>int&nbsp;getCompressionSize()</pre>
<div class="block">Get the buffer size for the compression.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>number of bytes to buffer for the compression codec.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre>int&nbsp;getRowIndexStride()</pre>
<div class="block">Get the number of rows per a entry in the row index.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of rows per an entry in the row index or 0 if there
 is no row index.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre><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/orc/StripeInformation.html" title="interface in org.apache.orc">StripeInformation</a>&gt;&nbsp;getStripes()</pre>
<div class="block">Get the list of stripes.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the information about the stripes in order</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre>long&nbsp;getContentLength()</pre>
<div class="block">Get the length of the file.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the number of bytes in the file</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre><a href="../../../org/apache/orc/ColumnStatistics.html" title="interface in org.apache.orc">ColumnStatistics</a>[]&nbsp;getStatistics()</pre>
<div class="block">Get the statistics about the columns in the file.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the information about the column</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre><a href="../../../org/apache/orc/TypeDescription.html" title="class in org.apache.orc">TypeDescription</a>&nbsp;getSchema()</pre>
<div class="block">Get the type of rows in this ORC file.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
</li>
</ul>
<a name="getTypes--">
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<h4>getTypes</h4>
<pre><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="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.Type.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.Type</a>&gt;&nbsp;getTypes()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">use getSchema instead</span></div>
<div class="block">Get the list of types contained in the file. The root type is the first
 type in the list.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the list of flattened types</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
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<pre><a href="../../../org/apache/orc/OrcFile.Version.html" title="enum in org.apache.orc">OrcFile.Version</a>&nbsp;getFileVersion()</pre>
<div class="block">Get the file format version.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
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<pre><a href="../../../org/apache/orc/OrcFile.WriterVersion.html" title="enum in org.apache.orc">OrcFile.WriterVersion</a>&nbsp;getWriterVersion()</pre>
<div class="block">Get the version of the writer of this file.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
</li>
</ul>
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<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;getSoftwareVersion()</pre>
<div class="block">Get the implementation and version of the software that wrote the file.
 It defaults to "ORC Java" for old files. For current files, we include the
 version also.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>returns the writer implementation and hopefully the version of the
   software</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.5.13</dd>
</dl>
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<pre><a href="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.FileTail.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.FileTail</a>&nbsp;getFileTail()</pre>
<div class="block">Get the file tail (footer + postscript)</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>- file tail</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
</li>
</ul>
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<pre><a href="../../../org/apache/orc/EncryptionKey.html" title="interface in org.apache.orc">EncryptionKey</a>[]&nbsp;getColumnEncryptionKeys()</pre>
<div class="block">Get the list of encryption keys for column encryption.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the set of encryption keys</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6.0</dd>
</dl>
</li>
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<pre><a href="../../../org/apache/orc/DataMaskDescription.html" title="interface in org.apache.orc">DataMaskDescription</a>[]&nbsp;getDataMasks()</pre>
<div class="block">Get the data masks for the unencrypted variant of the data.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the lists of data masks</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6.0</dd>
</dl>
</li>
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<pre><a href="../../../org/apache/orc/EncryptionVariant.html" title="interface in org.apache.orc">EncryptionVariant</a>[]&nbsp;getEncryptionVariants()</pre>
<div class="block">Get the list of encryption variants for the data.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6.0</dd>
</dl>
</li>
</ul>
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<h4>getVariantStripeStatistics</h4>
<pre><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/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>&gt;&nbsp;getVariantStripeStatistics(<a href="../../../org/apache/orc/EncryptionVariant.html" title="interface in org.apache.orc">EncryptionVariant</a>&nbsp;variant)
                                           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">Get the stripe statistics for a given variant. The StripeStatistics will
 have 1 entry for each column in the variant. This enables the user to
 get the stripe statistics for each variant regardless of which keys are
 available.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>variant</code> - the encryption variant or null for unencrypted</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a list of stripe statistics (one per a stripe)</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> - if the required key is not available</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6.0</dd>
</dl>
</li>
</ul>
<a name="options--">
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<h4>options</h4>
<pre><a href="../../../org/apache/orc/Reader.Options.html" title="class in org.apache.orc">Reader.Options</a>&nbsp;options()</pre>
<div class="block">Create a default options object that can be customized for creating
 a RecordReader.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a new default Options object</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2.0</dd>
</dl>
</li>
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<h4>rows</h4>
<pre><a href="../../../org/apache/orc/RecordReader.html" title="interface in org.apache.orc">RecordReader</a>&nbsp;rows()
           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">Create a RecordReader that reads everything with the default options.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a new RecordReader</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>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre><a href="../../../org/apache/orc/RecordReader.html" title="interface in org.apache.orc">RecordReader</a>&nbsp;rows(<a href="../../../org/apache/orc/Reader.Options.html" title="class in org.apache.orc">Reader.Options</a>&nbsp;options)
           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">Create a RecordReader that uses the options given.
 This method can't be named rows, because many callers used rows(null)
 before the rows() method was introduced.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>options</code> - the options to read with</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a new RecordReader</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>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
</li>
</ul>
<a name="getVersionList--">
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<h4>getVersionList</h4>
<pre><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="https://docs.oracle.com/javase/8/docs/api/java/lang/Integer.html?is-external=true" title="class or interface in java.lang">Integer</a>&gt;&nbsp;getVersionList()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>List of integers representing version of the file, in order from major to minor.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
</li>
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<pre>int&nbsp;getMetadataSize()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Gets the size of metadata, in bytes.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
</li>
</ul>
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<h4>getOrcProtoStripeStatistics</h4>
<pre><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="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.StripeStatistics.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.StripeStatistics</a>&gt;&nbsp;getOrcProtoStripeStatistics()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../org/apache/orc/Reader.html#getStripeStatistics--"><code>getStripeStatistics()</code></a> instead.</span></div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Stripe statistics, in original protobuf form.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
</dl>
</li>
</ul>
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<h4>getStripeStatistics</h4>
<pre><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/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>&gt;&nbsp;getStripeStatistics()
                                    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">Get the stripe statistics for all of the columns.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a list of the statistics for each stripe in the file</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>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.2.0</dd>
</dl>
</li>
</ul>
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<pre><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/orc/StripeStatistics.html" title="class in org.apache.orc">StripeStatistics</a>&gt;&nbsp;getStripeStatistics(boolean[]&nbsp;include)
                                    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">Get the stripe statistics from the file.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>include</code> - null for all columns or an array where the required columns
                are selected</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a list of the statistics for each stripe in the file</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>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.6.0</dd>
</dl>
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<h4>getOrcProtoFileStatistics</h4>
<pre><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="https://orc.apache.org/api/orc-core/org/apache/orc/OrcProto.ColumnStatistics.html?is-external=true" title="class or interface in org.apache.orc">OrcProto.ColumnStatistics</a>&gt;&nbsp;getOrcProtoFileStatistics()</pre>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../org/apache/orc/Reader.html#getStatistics--"><code>getStatistics()</code></a> instead.</span></div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>File statistics, in original protobuf form.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<h4>getSerializedFileFooter</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/nio/ByteBuffer.html?is-external=true" title="class or interface in java.nio">ByteBuffer</a>&nbsp;getSerializedFileFooter()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>Serialized file metadata read from disk for the purposes of caching, etc.</dd>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<pre>boolean&nbsp;writerUsedProlepticGregorian()</pre>
<div class="block">Was the file written using the proleptic Gregorian calendar.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.5.9</dd>
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<h4>getConvertToProlepticGregorian</h4>
<pre>boolean&nbsp;getConvertToProlepticGregorian()</pre>
<div class="block">Should the returned values use the proleptic Gregorian calendar?</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.5.9</dd>
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