Package org.forgerock.http.io

Class FileBranchingStream

java.lang.Object

java.io.InputStream

org.forgerock.http.io.BranchingInputStream

org.forgerock.http.io.FileBranchingStream

All Implemented Interfaces:

Closeable, AutoCloseable

public final class FileBranchingStream
extends BranchingInputStream

A BranchingInputStream for reading from files. Uses a FileInputStream to read from the file, but tracks the position read to so that branches can skip to the same location.

This stream would be most suited for when a large file is expected to piped straight to output, without modification and minimal branching. If the stream is not a large file, is going to be modified by filters, or is going to have substantial branching, a wrapper BranchingInputStream could be considered instead.

See Also:

IO.newBranchingInputStream(java.io.InputStream, org.forgerock.util.Factory)

Constructor Summary

Constructors

Constructor	Description
FileBranchingStream(File file)	Creates a new stream for the specified file.

Method Summary

Modifier and Type	Method	Description
BranchingInputStream	branch()	Creates a new branch at this stream's current position.
void	close()	Closes this branching stream and all of the branches created from it.
BranchingInputStream	copy()	Creates a twin of this stream at this stream's current position.
int	read()

Methods inherited from class org.forgerock.http.io.BranchingInputStream

parent

Methods inherited from class java.io.InputStream

available, mark, markSupported, nullInputStream, read, read, readAllBytes, readNBytes, readNBytes, reset, skip, transferTo

Methods inherited from class java.lang.Object

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

Constructor Detail

FileBranchingStream

public FileBranchingStream(File file)
                    throws FileNotFoundException

Creates a new stream for the specified file.

Parameters:

file - The file to read from.

Throws:

FileNotFoundException - If the file does not exist.

Method Detail

branch

public BranchingInputStream branch()
                            throws IOException

Description copied from class: BranchingInputStream

Creates a new branch at this stream's current position. The returned stream will have this stream as its parent.

Specified by:

branch in class BranchingInputStream

Returns:

a new branching stream, in the same position as this branch.

Throws:

IOException - if an I/O exception occurs.

copy

public BranchingInputStream copy()
                          throws IOException

Description copied from class: BranchingInputStream

Creates a twin of this stream at this stream's current position. The returned stream will have the same parent as this stream.

Specified by:

copy in class BranchingInputStream

Returns:

a new twin stream, in the same position as this branch.

Throws:

IOException - if an I/O exception occurs.

read

public int read()
         throws IOException

Specified by:

read in class InputStream

Throws:

IOException

close

public void close()
           throws IOException

Description copied from class: BranchingInputStream

Closes this branching stream and all of the branches created from it.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in class BranchingInputStream

Throws:

IOException - if an I/O exception occurs.