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java.lang.Objectorg.apache.hadoop.io.compress.DefaultCodec
org.apache.hadoop.io.compress.GzipCodec
public class GzipCodec
This class creates gzip compressors/decompressors.
Nested Class Summary | |
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protected static class |
GzipCodec.GzipInputStream
|
protected static class |
GzipCodec.GzipOutputStream
A bridge that wraps around a DeflaterOutputStream to make it a CompressionOutputStream. |
Constructor Summary | |
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GzipCodec()
|
Method Summary | |
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Compressor |
createCompressor()
Create a new Compressor for use by this CompressionCodec . |
Decompressor |
createDecompressor()
Create a new Decompressor for use by this CompressionCodec . |
CompressionInputStream |
createInputStream(java.io.InputStream in)
Create a stream decompressor that will read from the given input stream. |
CompressionInputStream |
createInputStream(java.io.InputStream in,
Decompressor decompressor)
Create a CompressionInputStream that will read from the given
InputStream with the given Decompressor . |
CompressionOutputStream |
createOutputStream(java.io.OutputStream out)
Create a CompressionOutputStream that will write to the given
OutputStream . |
CompressionOutputStream |
createOutputStream(java.io.OutputStream out,
Compressor compressor)
Create a CompressionOutputStream that will write to the given
OutputStream with the given Compressor . |
java.lang.Class<? extends Compressor> |
getCompressorType()
Get the type of Compressor needed by this CompressionCodec . |
java.lang.Class<? extends Decompressor> |
getDecompressorType()
Get the type of Decompressor needed by this CompressionCodec . |
java.lang.String |
getDefaultExtension()
Get the default filename extension for this kind of compression. |
Methods inherited from class org.apache.hadoop.io.compress.DefaultCodec |
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getConf, setConf |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public GzipCodec()
Method Detail |
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public CompressionOutputStream createOutputStream(java.io.OutputStream out) throws java.io.IOException
CompressionCodec
CompressionOutputStream
that will write to the given
OutputStream
.
createOutputStream
in interface CompressionCodec
createOutputStream
in class DefaultCodec
out
- the location for the final output stream
java.io.IOException
public CompressionOutputStream createOutputStream(java.io.OutputStream out, Compressor compressor) throws java.io.IOException
CompressionCodec
CompressionOutputStream
that will write to the given
OutputStream
with the given Compressor
.
createOutputStream
in interface CompressionCodec
createOutputStream
in class DefaultCodec
out
- the location for the final output streamcompressor
- compressor to use
java.io.IOException
public Compressor createCompressor()
CompressionCodec
Compressor
for use by this CompressionCodec
.
createCompressor
in interface CompressionCodec
createCompressor
in class DefaultCodec
public java.lang.Class<? extends Compressor> getCompressorType()
CompressionCodec
Compressor
needed by this CompressionCodec
.
getCompressorType
in interface CompressionCodec
getCompressorType
in class DefaultCodec
public CompressionInputStream createInputStream(java.io.InputStream in) throws java.io.IOException
CompressionCodec
createInputStream
in interface CompressionCodec
createInputStream
in class DefaultCodec
in
- the stream to read compressed bytes from
java.io.IOException
public CompressionInputStream createInputStream(java.io.InputStream in, Decompressor decompressor) throws java.io.IOException
CompressionCodec
CompressionInputStream
that will read from the given
InputStream
with the given Decompressor
.
createInputStream
in interface CompressionCodec
createInputStream
in class DefaultCodec
in
- the stream to read compressed bytes fromdecompressor
- decompressor to use
java.io.IOException
public Decompressor createDecompressor()
CompressionCodec
Decompressor
for use by this CompressionCodec
.
createDecompressor
in interface CompressionCodec
createDecompressor
in class DefaultCodec
public java.lang.Class<? extends Decompressor> getDecompressorType()
CompressionCodec
Decompressor
needed by this CompressionCodec
.
getDecompressorType
in interface CompressionCodec
getDecompressorType
in class DefaultCodec
public java.lang.String getDefaultExtension()
CompressionCodec
getDefaultExtension
in interface CompressionCodec
getDefaultExtension
in class DefaultCodec
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