org.xerial.snappy
クラス SnappyOutputStream

java.lang.Object
  java.io.OutputStream
      org.xerial.snappy.SnappyOutputStream

すべての実装されたインタフェース:

Closeable, Flushable

public class SnappyOutputStream
extends OutputStream

This class implements a stream filter for writing compressed data using Snappy. The input data is blocked into 32kb size (in default), and each block is compressed and then passed to the given OutputStream. The output data format is:

1. snappy codec header defined in SnappyCodec
2. a pair of (compressed data size, compressed data...)
3. a pair of (compressed data size, compressed data...)
4. ...

Note that the compressed data created by SnappyOutputStream cannot be uncompressed by Snappy.uncompress(byte[]) since the output formats of Snappy.compress(byte[]) and SnappyOutputStream are different. Use SnappyInputStream for uncompress the data generated by SnappyOutputStream.

作成者:

leo

フィールドの概要

protected byte[]	compressed
protected OutputStream	out
protected byte[]	uncompressed

コンストラクタの概要

SnappyOutputStream(OutputStream out)

SnappyOutputStream(OutputStream out, int blockSize)

メソッドの概要

void	close()
protected void	dump()
void	flush()
void	rawWrite(Object array, int byteOffset, int byteLength) Compress the raw byte array data.
void	write(byte[] b, int off, int len)
void	write(double[] f)
void	write(double[] f, int off, int len)
void	write(float[] f)
void	write(float[] f, int off, int len)
void	write(int b)
void	write(int[] f)
void	write(int[] f, int off, int len)
void	write(long[] d)
void	write(long[] d, int off, int len) Compress the input long array data
void	write(short[] f)
void	write(short[] f, int off, int len)
protected void	writeHeader()

クラス java.io.OutputStream から継承されたメソッド

write

クラス java.lang.Object から継承されたメソッド

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

フィールドの詳細

out

protected final OutputStream out

uncompressed

protected byte[] uncompressed

compressed

protected byte[] compressed

コンストラクタの詳細

SnappyOutputStream

public SnappyOutputStream(OutputStream out)
                   throws IOException

例外:

IOException

SnappyOutputStream

public SnappyOutputStream(OutputStream out,
                          int blockSize)
                   throws IOException

例外:

IOException

メソッドの詳細

writeHeader

protected void writeHeader()
                    throws IOException

例外:

IOException

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

オーバーライド:

クラス OutputStream 内の write

例外:

IOException

write

public void write(long[] d,
                  int off,
                  int len)
           throws IOException

Compress the input long array data

パラメータ:

d - input array

off - offset in the array

len - the number of elements in the array to copy

例外:

IOException

write

public void write(double[] f,
                  int off,
                  int len)
           throws IOException

例外:

IOException

write

public void write(float[] f,
                  int off,
                  int len)
           throws IOException

例外:

IOException

write

public void write(int[] f,
                  int off,
                  int len)
           throws IOException

例外:

IOException

write

public void write(short[] f,
                  int off,
                  int len)
           throws IOException

例外:

IOException

write

public void write(long[] d)
           throws IOException

例外:

IOException

write

public void write(double[] f)
           throws IOException

例外:

IOException

write

public void write(float[] f)
           throws IOException

例外:

IOException

write

public void write(int[] f)
           throws IOException

例外:

IOException

write

public void write(short[] f)
           throws IOException

例外:

IOException

rawWrite

public void rawWrite(Object array,
                     int byteOffset,
                     int byteLength)
              throws IOException

Compress the raw byte array data.

パラメータ:

array - array data of any type (e.g., byte[], float[], long[], ...)

byteOffset -

byteLength -

例外:

IOException

write

public void write(int b)
           throws IOException

定義:

クラス OutputStream 内の write

例外:

IOException

flush

public void flush()
           throws IOException

定義:

インタフェース Flushable 内の flush

オーバーライド:

クラス OutputStream 内の flush

例外:

IOException

dump

protected void dump()
             throws IOException

例外:

IOException

close

public void close()
           throws IOException

定義:

インタフェース Closeable 内の close

オーバーライド:

クラス OutputStream 内の close

例外:

IOException