org.eclipse.birt.core.archive
Class RAFileOutputStream

java.lang.Object
  java.io.OutputStream
      org.eclipse.birt.core.archive.RAOutputStream
          org.eclipse.birt.core.archive.RAFileOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public class RAFileOutputStream
extends RAOutputStream

This class is to be used by engine host (viewer), but not engine.

Field Summary

protected static java.util.logging.Logger

logger the logger

Constructor Summary

RAFileOutputStream(java.io.RandomAccessFile parentFile, long startPos)

Method Summary

long	getOffset()
long	getStreamLength()
long	length()
void	seek(long localPos) Same behavior as the seek in RandomAccessFile.
void	write(byte[] b) Writes b.length bytes from the specified byte array to this output stream.
void	write(byte[] b, int off, int len) Writes len bytes from the specified byte array starting at offset off to this output stream.
void	write(int b) The same behavior as OutputStream.write().
void	writeInt(int v)
void	writeLong(long v)

Methods inherited from class java.io.OutputStream

close, flush

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static java.util.logging.Logger logger

the logger

Constructor Detail

RAFileOutputStream

public RAFileOutputStream(java.io.RandomAccessFile parentFile,
                          long startPos)

Parameters:

parentFile - - underlying RandomAccess file

startPos - - the (global) position of the first character in parentFile

endPos - - the (global) position of EOF mark (not a valid character in the file)

Method Detail

write

public void write(int b)
           throws java.io.IOException

The same behavior as OutputStream.write().
Writes the specified byte to this output stream. The general contract for write is that one byte is written to the output stream. The byte to be written is the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Subclasses of OutputStream must provide an implementation for this method.

Specified by:

write in class java.io.OutputStream

Parameters:

b - the byte.

Throws:

java.io.IOException - if an I/O error occurs. In particular, an IOException may be thrown if the output stream has been closed.

write

public void write(byte[] b)
           throws java.io.IOException

Writes b.length bytes from the specified byte array to this output stream. The general contract for write(b) is that it should have exactly the same effect as the call write(b, 0, b.length).

Overrides:

write in class java.io.OutputStream

Parameters:

b - the data.

Throws:

java.io.IOException - if an I/O error occurs.

See Also:

OutputStream.write(byte[], int, int)

write

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

Writes len bytes from the specified byte array starting at offset off to this output stream. The general contract for write(b, off, len) is that some of the bytes in the array b are written to the output stream in order; element b[off] is the first byte written and b[off+len-1] is the last byte written by this operation.

Overrides:

write in class java.io.OutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException - if an I/O error occurs.

writeInt

public void writeInt(int v)
              throws java.io.IOException

Specified by:

writeInt in class RAOutputStream

Throws:

java.io.IOException

writeLong

public void writeLong(long v)
               throws java.io.IOException

Specified by:

writeLong in class RAOutputStream

Throws:

java.io.IOException

seek

public void seek(long localPos)
          throws java.io.IOException

Same behavior as the seek in RandomAccessFile.
Sets the file-pointer offset, measured from the beginning of this file, at which the next read or write occurs. The offset may be set beyond the end of the file. Setting the offset beyond the end of the file does not change the file length. The file length will change only by writing after the offset has been set beyond the end of the file.

Specified by:

seek in class RAOutputStream

Parameters:

localPos - - the new local postion in the stream, measured in bytes from the beginning of the stream

Throws:

java.io.IOException

getOffset

public long getOffset()
               throws java.io.IOException

Specified by:

getOffset in class RAOutputStream

Throws:

java.io.IOException

getStreamLength

public long getStreamLength()

Returns:

the length of the stream

length

public long length()
            throws java.io.IOException

Specified by:

length in class RAOutputStream

Throws:

java.io.IOException