org.jfree.report.util

Class MemoryByteArrayOutputStream


public class MemoryByteArrayOutputStream
extends OutputStream

A string writer that is able to write large amounts of data. The original StringWriter contained in Java doubles its buffersize everytime the buffer overflows. This is nice with small amounts of data, but awfull for huge buffers.
Author:
Thomas Morgner

Constructor Summary

MemoryByteArrayOutputStream()
Create a new character-stream writer whose critical sections will synchronize on the writer itself.
MemoryByteArrayOutputStream(int bufferSize, int maximumBufferIncrement)
Create a new character-stream writer whose critical sections will synchronize on the writer itself.

Method Summary

void
close()
Close the stream, flushing it first.
void
flush()
Flush the stream.
int
getLength()
byte[]
getRaw()
byte[]
toByteArray()
void
write(byte[] b)
Writes b.length bytes from the specified byte array to this output stream.
void
write(byte[] cbuf, int off, int len)
Write a portion of an array of characters.
void
write(int b)
Writes the specified byte to this output stream.

Constructor Details

MemoryByteArrayOutputStream

public MemoryByteArrayOutputStream()
Create a new character-stream writer whose critical sections will synchronize on the writer itself.

MemoryByteArrayOutputStream

public MemoryByteArrayOutputStream(int bufferSize,
                                   int maximumBufferIncrement)
Create a new character-stream writer whose critical sections will synchronize on the writer itself.

Method Details

close

public void close()
            throws IOException
Close the stream, flushing it first. Once a stream has been closed, further write() or flush() invocations will cause an IOException to be thrown. Closing a previously-closed stream, however, has no effect.

flush

public void flush()
            throws IOException
Flush the stream. If the stream has saved any characters from the various write() methods in a buffer, write them immediately to their intended destination. Then, if that destination is another character or byte stream, flush it. Thus one flush() invocation will flush all the buffers in a chain of Writers and OutputStreams.

If the intended destination of this stream is an abstraction provided by the underlying operating system, for example a file, then flushing the stream guarantees only that bytes previously written to the stream are passed to the operating system for writing; it does not guarantee that they are actually written to a physical device such as a disk drive.


getLength

public int getLength()

getRaw

public byte[] getRaw()

toByteArray

public byte[] toByteArray()

write

public void write(byte[] b)
            throws 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).
Parameters:
b - the data.
See Also:
java.io.OutputStream.write(byte[], int, int)

write

public void write(byte[] cbuf,
                  int off,
                  int len)
            throws IOException
Write a portion of an array of characters.
Parameters:
cbuf - Array of characters
off - Offset from which to start writing characters
len - Number of characters to write

write

public void write(int b)
            throws IOException
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.

Parameters:
b - the byte.