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com.tangosol.io
Class WrapperOutputStream

java.lang.Object
java.io.OutputStream
com.tangosol.io.WrapperOutputStream

All Implemented Interfaces:

OutputStreaming, java.io.Closeable, java.io.Flushable

Direct Known Subclasses:

AsymmetricEncryptionFilter.IdentityOutputStream, ClusterEncryptionFilter.MultiplexingOutputStream, PackedDataOutputStream

public class WrapperOutputStream

extends java.io.OutputStream

implements OutputStreaming

This is an OutputStream class that delegates to another OutputStream. Primarily, this is intended as a base class for building specific-purpose OutputStream wrappers.

Author:

cp 2004.08.20

Field Summary

protected java.io.OutputStream

m_out The underlying OutputStream object to use.

Constructor Summary

WrapperOutputStream()
Construct an uninitialized WrapperOutputStream.

WrapperOutputStream(java.io.OutputStream out)
Construct a WrapperOutputStream that will output to the specified OutputStream object.

Method Summary

void	close() Closes this OutputStream and releases any associated system resources.
protected java.io.OutputStream	ensureOutputStream() Return the underlying OutputStream.
void	flush() Flushes this OutputStream and forces any buffered output bytes to be written.
java.io.OutputStream	getOutputStream() Obtain the underlying OutputStream.
void	setOutputStream(java.io.OutputStream out) Specify the underlying OutputStream.
void	write(byte[] ab) Writes all the bytes in the array ab.
void	write(byte[] ab, int of, int cb) Writes cb bytes starting at offset of from the array ab.
void	write(int b) Writes the eight low-order bits of the argument b.

Field Detail

m_out

protected java.io.OutputStream m_out

The underlying OutputStream object to use.

Constructor Detail

WrapperOutputStream

public WrapperOutputStream()

Construct an uninitialized WrapperOutputStream.

WrapperOutputStream

public WrapperOutputStream(java.io.OutputStream out)

Construct a WrapperOutputStream that will output to the specified OutputStream object.

Parameters:

out - an OutputStream object to write to

Method Detail

getOutputStream

public java.io.OutputStream getOutputStream()

Obtain the underlying OutputStream.

Returns:

the underlying OutputStream

ensureOutputStream

protected java.io.OutputStream ensureOutputStream()

Return the underlying OutputStream.

Returns:

the underlying OutputStream

Throws:

java.lang.IllegalStateException - if the underlying stream has not been specified.

setOutputStream

public void setOutputStream(java.io.OutputStream out)

Specify the underlying OutputStream. This method may only be called once with a non-null value.

Parameters:

out - the stream to be wrapped

Throws:

java.lang.IllegalStateException - if the underlying stream has already been specified.

write

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

Writes the eight low-order bits of the argument b. The 24 high-order bits of b are ignored.

Specified by:

write in interface OutputStreaming

Specified by:

write in class java.io.OutputStream

Parameters:

b - the byte to write (passed as an integer)

Throws:

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

write

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

Writes all the bytes in the array ab.

Specified by:

write in interface OutputStreaming

Overrides:

write in class java.io.OutputStream

Parameters:

ab - the byte array to write

Throws:

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

java.lang.NullPointerException - if ab is null

write

public void write(byte[] ab,
                  int of,
                  int cb)
           throws java.io.IOException

Writes cb bytes starting at offset of from the array ab.

Specified by:

write in interface OutputStreaming

Overrides:

write in class java.io.OutputStream

Parameters:

ab - the byte array to write from

of - the offset into ab to start writing from

cb - the number of bytes from ab to write

Throws:

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

java.lang.NullPointerException - if ab is null

java.lang.IndexOutOfBoundsException - if of is negative, or cb is negative, or of+cb is greater than ab.length

flush

public void flush()
           throws java.io.IOException

Flushes this OutputStream and forces any buffered output bytes to be written.

Specified by:

flush in interface OutputStreaming

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

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

close

public void close()
           throws java.io.IOException

Closes this OutputStream and releases any associated system resources.

Specified by:

close in interface OutputStreaming

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.OutputStream

Throws:

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

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