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| <h2 title="Interface HFileBlockDecodingContext" class="title">Interface HFileBlockDecodingContext</h2> |
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| <pre>@InterfaceAudience.Private |
| public interface <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.html#line.31">HFileBlockDecodingContext</a></pre> |
| <div class="block">A decoding context that is created by a reader's encoder, and is shared across all of the |
| reader's read operations.</div> |
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| <dd><a href="../../../../../../org/apache/hadoop/hbase/io/encoding/HFileBlockEncodingContext.html" title="interface in org.apache.hadoop.hbase.io.encoding"><code>for encoding</code></a></dd> |
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| <td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileContext.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileContext</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.html#getHFileContext--">getHFileContext</a></span>()</code> |
| <div class="block">Returns HFile meta information</div> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.html#prepareDecoding-int-int-org.apache.hadoop.hbase.nio.ByteBuff-org.apache.hadoop.hbase.nio.ByteBuff-">prepareDecoding</a></span>(int onDiskSizeWithoutHeader, |
| int uncompressedSizeWithoutHeader, |
| <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> blockBufferWithoutHeader, |
| <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> onDiskBlock)</code> |
| <div class="block">Perform all actions that need to be done before the encoder's real decoding process.</div> |
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| <h4>prepareDecoding</h4> |
| <pre>void <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.html#line.39">prepareDecoding</a>(int onDiskSizeWithoutHeader, |
| int uncompressedSizeWithoutHeader, |
| <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> blockBufferWithoutHeader, |
| <a href="../../../../../../org/apache/hadoop/hbase/nio/ByteBuff.html" title="class in org.apache.hadoop.hbase.nio">ByteBuff</a> onDiskBlock) |
| 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">Perform all actions that need to be done before the encoder's real decoding process. |
| Decompression needs to be done if <a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileContext.html#getCompression--"><code>HFileContext.getCompression()</code></a> returns a valid |
| compression algorithm. numBytes after block and encoding headers numBytes without header |
| required to store the block after decompressing (not decoding) ByteBuffer pointed after the |
| header but before the data on disk data to be decoded</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
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| <h4>getHFileContext</h4> |
| <pre><a href="../../../../../../org/apache/hadoop/hbase/io/hfile/HFileContext.html" title="class in org.apache.hadoop.hbase.io.hfile">HFileContext</a> <a href="../../../../../../src-html/org/apache/hadoop/hbase/io/encoding/HFileBlockDecodingContext.html#line.43">getHFileContext</a>()</pre> |
| <div class="block">Returns HFile meta information</div> |
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