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<div class="subTitle">org.apache.orc</div>
<h2 title="Interface RecordReader" class="title">Interface RecordReader</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/RecordReaderImpl.html" title="class in org.apache.orc.impl">RecordReaderImpl</a></dd>
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<pre>public interface <span class="typeNameLabel">RecordReader</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">A row-by-row iterator for ORC files.</div>
<dl>
<dt><span class="simpleTagLabel">Since:</span></dt>
<dd>1.1.0</dd>
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<h3>Method Summary</h3>
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<th class="colFirst" scope="col">Modifier and Type</th>
<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/orc/RecordReader.html#close--">close</a></span>()</code>
<div class="block">Release the resources associated with the given reader.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/RecordReader.html#getProgress--">getProgress</a></span>()</code>
<div class="block">Get the progress of the reader through the rows.</div>
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</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/RecordReader.html#getRowNumber--">getRowNumber</a></span>()</code>
<div class="block">Get the row number of the row that will be returned by the following
 call to next().</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/RecordReader.html#nextBatch-org.apache.hadoop.hive.ql.exec.vector.VectorizedRowBatch-">nextBatch</a></span>(<a href="https://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>&nbsp;batch)</code>
<div class="block">Read the next row batch.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../org/apache/orc/RecordReader.html#seekToRow-long-">seekToRow</a></span>(long&nbsp;rowCount)</code>
<div class="block">Seek to a particular row number.</div>
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<h4>nextBatch</h4>
<pre>boolean&nbsp;nextBatch(<a href="https://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>&nbsp;batch)
           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">Read the next row batch. The size of the batch to read cannot be
 controlled by the callers. Caller need to look at
 VectorizedRowBatch.size of the returned object to know the batch
 size read.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>batch</code> - a row batch object to read into</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>were more rows available to read?</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>
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<h4>getRowNumber</h4>
<pre>long&nbsp;getRowNumber()
           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 row number of the row that will be returned by the following
 call to next().</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the row number from 0 to the number of rows 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>1.1.0</dd>
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<h4>getProgress</h4>
<pre>float&nbsp;getProgress()
           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 progress of the reader through the rows.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a fraction between 0.0 and 1.0 of rows read</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>
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<h4>close</h4>
<pre>void&nbsp;close()
    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">Release the resources associated with the given reader.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code>&nbsp;in interface&nbsp;<code><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></code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><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>&nbsp;in interface&nbsp;<code><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></code></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>
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<h4>seekToRow</h4>
<pre>void&nbsp;seekToRow(long&nbsp;rowCount)
        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">Seek to a particular row number.</div>
<dl>
<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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