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java.lang.Objectorg.apache.hadoop.io.compress.bzip2.BZip2DummyDecompressor
public class BZip2DummyDecompressor
This is a dummy decompressor for BZip2.
| Constructor Summary | |
|---|---|
BZip2DummyDecompressor()
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| Method Summary | |
|---|---|
int |
decompress(byte[] b,
int off,
int len)
Fills specified buffer with uncompressed data. |
void |
end()
Closes the decompressor and discards any unprocessed input. |
boolean |
finished()
Returns true if the end of the decompressed data output stream has been reached. |
int |
getRemaining()
Returns the number of bytes remaining in the compressed-data buffer; typically called after the decompressor has finished decompressing the current gzip stream (a.k.a. |
boolean |
needsDictionary()
Returns true if a preset dictionary is needed for decompression. |
boolean |
needsInput()
Returns true if the input data buffer is empty and Decompressor.setInput(byte[], int, int) should be called to
provide more input. |
void |
reset()
Resets decompressor and input and output buffers so that a new set of input data can be processed. |
void |
setDictionary(byte[] b,
int off,
int len)
Sets preset dictionary for compression. |
void |
setInput(byte[] b,
int off,
int len)
Sets input data for decompression. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
|---|
public BZip2DummyDecompressor()
| Method Detail |
|---|
public int decompress(byte[] b,
int off,
int len)
throws IOException
DecompressorDecompressor.needsInput() should be called in order to determine if more
input data is required.
decompress in interface Decompressorb - Buffer for the compressed dataoff - Start offset of the datalen - Size of the buffer
IOExceptionpublic void end()
Decompressor
end in interface Decompressorpublic boolean finished()
Decompressor
finished in interface Decompressortrue if the end of the decompressed
data output stream has been reached.public boolean needsDictionary()
Decompressortrue if a preset dictionary is needed for decompression.
needsDictionary in interface Decompressortrue if a preset dictionary is needed for decompressionpublic boolean needsInput()
DecompressorDecompressor.setInput(byte[], int, int) should be called to
provide more input.
needsInput in interface Decompressortrue if the input data buffer is empty and
Decompressor.setInput(byte[], int, int) should be called in
order to provide more input.public int getRemaining()
Decompressor
getRemaining in interface Decompressorpublic void reset()
Decompressor
reset in interface Decompressor
public void setDictionary(byte[] b,
int off,
int len)
Decompressor
setDictionary in interface Decompressorb - Dictionary data bytesoff - Start offsetlen - Length
public void setInput(byte[] b,
int off,
int len)
DecompressorDecompressor.needsInput() returns
true indicating that more input data is required.
(Both native and non-native versions of various Decompressors require
that the data passed in via b[] remain unmodified until
the caller is explicitly notified--via Decompressor.needsInput()--that the
buffer may be safely modified. With this requirement, an extra
buffer-copy can be avoided.)
setInput in interface Decompressorb - Input dataoff - Start offsetlen - Length
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