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org.aspectj.weaver

public Class CompressingDataOutputStream

Class Inheritance

extends DataOutputStream

java.lang.Object
java.io.OutputStream
java.io.FilterOutputStream
java.io.DataOutputStream
org.aspectj.weaver.CompressingDataOutputStream

Imports

java.io.ByteArrayOutputStream, .DataOutputStream, .FileOutputStream, .IOException

A variation of a DataOutputStream that is linked to a constant pool writer. The linked constant pool can be used to compress objects into to simple index references into the constant pool. The corresponding decompression is done in the VersionedDataInputStream.

Author: Andy Clement

Field Summary

Modifier and Type	Field and Description
public boolean	compressionEnabled
private ConstantPoolWriter	constantPoolWriter

Inherited from java.io.DataOutputStream:: written

Constructor Summary

Access	Constructor and Description
public	CompressingDataOutputStream(ByteArrayOutputStream baos, ConstantPoolWriter constantPoolWriter)
public	CompressingDataOutputStream(FileOutputStream fos)

Method Summary

Modifier and Type	Method and Description
public boolean	canCompress()
public int	Returns: the constant pool index compressFilepath(String a file system path 'c:\a\b\c.txt' or '/a/b/c.txt' filepath)
public int	Returns: the constant pool index compressName(String a simple name (for example a method or field name) name)
public int	Returns: the constant pool index compressSignature(String of the form 'La/b/c/d;' signature)
public void	writeCompressedName(String a simple name (for example a method or field name) name)
public void	writeCompressedPath(String a file system path 'c:\a\b\c.txt' or '/a/b/c.txt' path)
public void	writeCompressedSignature(String of the form 'La/b/c/d;' signature)

Inherited from java.io.DataOutputStream:: flush size write write writeBoolean writeByte writeBytes writeChar writeChars writeDouble writeFloat writeInt writeLong writeShort writeUTF

Field Detail

compressionEnabled	back to summary
public boolean compressionEnabled

constantPoolWriter	back to summary
private ConstantPoolWriter constantPoolWriter

Constructor Detail

CompressingDataOutputStream	back to summary
public CompressingDataOutputStream(ByteArrayOutputStream baos, ConstantPoolWriter constantPoolWriter)

CompressingDataOutputStream	back to summary
public CompressingDataOutputStream(FileOutputStream fos)

Method Detail

canCompress	back to summary
public boolean canCompress()

compressFilepath	back to summary
public int compressFilepath(String filepath) Parameters filepath:String a file system path 'c:\a\b\c.txt' or '/a/b/c.txt' Returns:int the constant pool index

compressName	back to summary
public int compressName(String name) Parameters name:String a simple name (for example a method or field name) Returns:int the constant pool index

compressSignature	back to summary
public int compressSignature(String signature) Parameters signature:String of the form 'La/b/c/d;' Returns:int the constant pool index

writeCompressedName	back to summary
public void writeCompressedName(String name) throws IOException Parameters name:String a simple name (for example a method or field name)

writeCompressedPath	back to summary
public void writeCompressedPath(String path) throws IOException Parameters path:String a file system path 'c:\a\b\c.txt' or '/a/b/c.txt'

writeCompressedSignature	back to summary
public void writeCompressedSignature(String signature) throws IOException Parameters signature:String of the form 'La/b/c/d;'