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<div class="subTitle">org.apache.hadoop.io.compress</div>
<h2 title="Interface CompressionCodec" class="title">Interface CompressionCodec</h2>
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<dl>
<dt>All Known Subinterfaces:</dt>
<dd><a href="../../../../../org/apache/hadoop/io/compress/DirectDecompressionCodec.html" title="interface in org.apache.hadoop.io.compress">DirectDecompressionCodec</a>, <a href="../../../../../org/apache/hadoop/io/compress/SplittableCompressionCodec.html" title="interface in org.apache.hadoop.io.compress">SplittableCompressionCodec</a></dd>
</dl>
<dl>
<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../org/apache/hadoop/io/compress/BZip2Codec.html" title="class in org.apache.hadoop.io.compress">BZip2Codec</a>, <a href="../../../../../org/apache/hadoop/io/compress/DefaultCodec.html" title="class in org.apache.hadoop.io.compress">DefaultCodec</a>, <a href="../../../../../org/apache/hadoop/io/compress/GzipCodec.html" title="class in org.apache.hadoop.io.compress">GzipCodec</a>, <a href="../../../../../org/apache/hadoop/io/compress/PassthroughCodec.html" title="class in org.apache.hadoop.io.compress">PassthroughCodec</a></dd>
</dl>
<hr>
<br>
<pre>@InterfaceAudience.Public
@InterfaceStability.Evolving
public interface <span class="typeNameLabel">CompressionCodec</span></pre>
<div class="block">This class encapsulates a streaming compression/decompression pair.</div>
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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></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/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress">Compressor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#createCompressor--">createCompressor</a></span>()</code>
<div class="block">Create a new <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress"><code>Compressor</code></a> for use by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress">Decompressor</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#createDecompressor--">createDecompressor</a></span>()</code>
<div class="block">Create a new <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress"><code>Decompressor</code></a> for use by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress">CompressionInputStream</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#createInputStream-java.io.InputStream-">createInputStream</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;in)</code>
<div class="block">Create a <a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionInputStream</code></a> that will read from the given
input stream.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress">CompressionInputStream</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#createInputStream-java.io.InputStream-org.apache.hadoop.io.compress.Decompressor-">createInputStream</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;in,
<a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress">Decompressor</a>&nbsp;decompressor)</code>
<div class="block">Create a <a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionInputStream</code></a> that will read from the given
<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io"><code>InputStream</code></a> with the given <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress"><code>Decompressor</code></a>.</div>
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<tr id="i4" class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress">CompressionOutputStream</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#createOutputStream-java.io.OutputStream-">createOutputStream</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out)</code>
<div class="block">Create a <a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionOutputStream</code></a> that will write to the given
<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><code>OutputStream</code></a>.</div>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress">CompressionOutputStream</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#createOutputStream-java.io.OutputStream-org.apache.hadoop.io.compress.Compressor-">createOutputStream</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress">Compressor</a>&nbsp;compressor)</code>
<div class="block">Create a <a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionOutputStream</code></a> that will write to the given
<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><code>OutputStream</code></a> with the given <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress"><code>Compressor</code></a>.</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress">Compressor</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#getCompressorType--">getCompressorType</a></span>()</code>
<div class="block">Get the type of <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress"><code>Compressor</code></a> needed by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress">Decompressor</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html#getDecompressorType--">getDecompressorType</a></span>()</code>
<div class="block">Get the type of <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress"><code>Decompressor</code></a> needed by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
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<tr id="i8" class="altColor">
<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/hadoop/io/compress/CompressionCodec.html#getDefaultExtension--">getDefaultExtension</a></span>()</code>
<div class="block">Get the default filename extension for this kind of compression.</div>
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<pre><a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress">CompressionOutputStream</a>&nbsp;createOutputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out)
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 <a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionOutputStream</code></a> that will write to the given
<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><code>OutputStream</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>out</code> - the location for the final output stream</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a stream the user can write uncompressed data to have it compressed</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>
</dl>
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<pre><a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress">CompressionOutputStream</a>&nbsp;createOutputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io">OutputStream</a>&nbsp;out,
<a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress">Compressor</a>&nbsp;compressor)
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 <a href="../../../../../org/apache/hadoop/io/compress/CompressionOutputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionOutputStream</code></a> that will write to the given
<a href="https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html?is-external=true" title="class or interface in java.io"><code>OutputStream</code></a> with the given <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress"><code>Compressor</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>out</code> - the location for the final output stream</dd>
<dd><code>compressor</code> - compressor to use</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a stream the user can write uncompressed data to have it compressed</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>
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<h4>getCompressorType</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress">Compressor</a>&gt;&nbsp;getCompressorType()</pre>
<div class="block">Get the type of <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress"><code>Compressor</code></a> needed by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the type of compressor needed by this codec.</dd>
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<a name="createCompressor--">
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<h4>createCompressor</h4>
<pre><a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress">Compressor</a>&nbsp;createCompressor()</pre>
<div class="block">Create a new <a href="../../../../../org/apache/hadoop/io/compress/Compressor.html" title="interface in org.apache.hadoop.io.compress"><code>Compressor</code></a> for use by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a new compressor for use by this codec</dd>
</dl>
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<pre><a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress">CompressionInputStream</a>&nbsp;createInputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;in)
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 <a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionInputStream</code></a> that will read from the given
input stream.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>in</code> - the stream to read compressed bytes from</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a stream to read uncompressed bytes from</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>
</dl>
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<pre><a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress">CompressionInputStream</a>&nbsp;createInputStream(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io">InputStream</a>&nbsp;in,
<a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress">Decompressor</a>&nbsp;decompressor)
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 <a href="../../../../../org/apache/hadoop/io/compress/CompressionInputStream.html" title="class in org.apache.hadoop.io.compress"><code>CompressionInputStream</code></a> that will read from the given
<a href="https://docs.oracle.com/javase/8/docs/api/java/io/InputStream.html?is-external=true" title="class or interface in java.io"><code>InputStream</code></a> with the given <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress"><code>Decompressor</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>in</code> - the stream to read compressed bytes from</dd>
<dd><code>decompressor</code> - decompressor to use</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a stream to read uncompressed bytes from</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>
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<h4>getDecompressorType</h4>
<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;? extends <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress">Decompressor</a>&gt;&nbsp;getDecompressorType()</pre>
<div class="block">Get the type of <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress"><code>Decompressor</code></a> needed by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the type of decompressor needed by this codec.</dd>
</dl>
</li>
</ul>
<a name="createDecompressor--">
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<h4>createDecompressor</h4>
<pre><a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress">Decompressor</a>&nbsp;createDecompressor()</pre>
<div class="block">Create a new <a href="../../../../../org/apache/hadoop/io/compress/Decompressor.html" title="interface in org.apache.hadoop.io.compress"><code>Decompressor</code></a> for use by this <a href="../../../../../org/apache/hadoop/io/compress/CompressionCodec.html" title="interface in org.apache.hadoop.io.compress"><code>CompressionCodec</code></a>.</div>
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<h4>getDefaultExtension</h4>
<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;getDefaultExtension()</pre>
<div class="block">Get the default filename extension for this kind of compression.</div>
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