org.eclipse.birt.core.archive
Class FolderArchive

java.lang.Object
  org.eclipse.birt.core.archive.FolderArchive

All Implemented Interfaces:

IDocArchiveReader, IDocArchiveWriter

public class FolderArchive
extends java.lang.Object
implements IDocArchiveWriter, IDocArchiveReader

Constructor Summary

FolderArchive(java.lang.String folderName)

Method Summary

void	close() This function must be called after the reader is used.
protected void	closeAllStream()
RAOutputStream	createOutputStream(java.lang.String relativePath)
RAOutputStream	createRandomAccessStream(java.lang.String relativePath) Create a random access stream in the archive and return it.
boolean	dropStream(java.lang.String relativePath) Delete a stream from the archive.
boolean	exists(java.lang.String relativePath)
void	finish() This function must be called after the writer is used.
void	flush() This function flushs all the buffers in the writer
RAInputStream	getInputStream(java.lang.String relativePath)
java.lang.String	getName()
RAOutputStream	getOutputStream(java.lang.String relativePath)
RAInputStream	getStream(java.lang.String relativePath) returns a sequential access file.
void	initialize() This function must be called before the writer is used.
boolean	isOpen()
java.util.List	listAllStreams() get all the stream in the archive file.
java.util.List	listStreams(java.lang.String relativeStoragePath)
java.lang.Object	lock(java.lang.String stream) try to lock the stream
void	open() This functiona must be called before the reader is used.
RAOutputStream	openRandomAccessStream(java.lang.String relativePath)
void	setStreamSorter(IStreamSorter streamSorter) Set the stream sorter (if needed).
void	unlock(java.lang.Object lock) unlock the stream locked by the object.

Methods inherited from class java.lang.Object

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

Constructor Detail

FolderArchive

public FolderArchive(java.lang.String folderName)
              throws java.io.IOException

Parameters:

absolute - fileName the archive file name

Throws:

java.io.IOException

Method Detail

initialize

public void initialize()
                throws java.io.IOException

Description copied from interface: IDocArchiveWriter

This function must be called before the writer is used. initialize the document archive.

Specified by:

initialize in interface IDocArchiveWriter

Throws:

java.io.IOException

getName

public java.lang.String getName()

Specified by:

getName in interface IDocArchiveReader

Specified by:

getName in interface IDocArchiveWriter

Returns:

the archive name

createRandomAccessStream

public RAOutputStream createRandomAccessStream(java.lang.String relativePath)
                                        throws java.io.IOException

Description copied from interface: IDocArchiveWriter

Create a random access stream in the archive and return it.

Specified by:

createRandomAccessStream in interface IDocArchiveWriter

Parameters:

relativePath - - relative path to report archive path. The path is based on Unix syntax, with the root of the archive denoted by "/". The initial "/" character can be skipped.

Returns:

RAOutputStream

Throws:

java.io.IOException

openRandomAccessStream

public RAOutputStream openRandomAccessStream(java.lang.String relativePath)
                                      throws java.io.IOException

Specified by:

openRandomAccessStream in interface IDocArchiveWriter

Throws:

java.io.IOException

createOutputStream

public RAOutputStream createOutputStream(java.lang.String relativePath)
                                  throws java.io.IOException

Specified by:

createOutputStream in interface IDocArchiveWriter

Throws:

java.io.IOException

getOutputStream

public RAOutputStream getOutputStream(java.lang.String relativePath)
                               throws java.io.IOException

Specified by:

getOutputStream in interface IDocArchiveWriter

Throws:

java.io.IOException

getInputStream

public RAInputStream getInputStream(java.lang.String relativePath)
                             throws java.io.IOException

Specified by:

getInputStream in interface IDocArchiveReader

Specified by:

getInputStream in interface IDocArchiveWriter

Throws:

java.io.IOException

dropStream

public boolean dropStream(java.lang.String relativePath)

Description copied from interface: IDocArchiveWriter

Delete a stream from the archive. Note: Not all of the derived classes support this function. E.g. FileArchiveWriter doesn't support it.

Specified by:

dropStream in interface IDocArchiveWriter

Parameters:

relativePath - - the relative path of the stream

Returns:

whether the operation was successful

exists

public boolean exists(java.lang.String relativePath)

Specified by:

exists in interface IDocArchiveReader

Specified by:

exists in interface IDocArchiveWriter

Parameters:

relativePath - - the relative stream path in the archive. The relative path is based on Unix syntax, with the root of the archive denoted by "/". The initial "/" character can be skipped. Used mainly for sequential streams in report.

Returns:

whether the stream exist

setStreamSorter

public void setStreamSorter(IStreamSorter streamSorter)

Description copied from interface: IDocArchiveWriter

Set the stream sorter (if needed). The stream sorter will be used to sort the streams. If no stream sorter is set, the streams will be written in random order.

Specified by:

setStreamSorter in interface IDocArchiveWriter

Parameters:

streamSorter - - the stream sorter

finish

public void finish()
            throws java.io.IOException

Description copied from interface: IDocArchiveWriter

This function must be called after the writer is used. finalizes the socument archive. This may involve compressing the archive to a single file. This also closes and finishes using the archive.

Specified by:

finish in interface IDocArchiveWriter

Throws:

java.io.IOException

open

public void open()
          throws java.io.IOException

Description copied from interface: IDocArchiveReader

This functiona must be called before the reader is used. initialize the document archive. For example, the index stream mey be read into memory.

Specified by:

open in interface IDocArchiveReader

Throws:

java.io.IOException

getStream

public RAInputStream getStream(java.lang.String relativePath)
                        throws java.io.IOException

Description copied from interface: IDocArchiveReader

returns a sequential access file.

Specified by:

getStream in interface IDocArchiveReader

Parameters:

relativePath - - the relative stream path in the archive. The relative path is based on Unix syntax, with the root of the archive denoted by "/". The initial "/" character can be skipped. Used mainly for sequential streams in report.

Returns:

RAInputStream

Throws:

java.io.IOException

listStreams

public java.util.List listStreams(java.lang.String relativeStoragePath)
                           throws java.io.IOException

Specified by:

listStreams in interface IDocArchiveReader

Parameters:

relativeStoragePath - - the relative stream path in the archive. The relative path is based on Unix syntax, with the root of the archive denoted by "/". The initial "/" character can be skipped.

Returns:

a list of strings representing the underlying stream names. The return values are in the relative path format too.

Throws:

java.io.IOException

listAllStreams

public java.util.List listAllStreams()
                              throws java.io.IOException

Description copied from interface: IDocArchiveReader

get all the stream in the archive file.

Specified by:

listAllStreams in interface IDocArchiveReader

Returns:

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Description copied from interface: IDocArchiveReader

This function must be called after the reader is used. close the archive.

Specified by:

close in interface IDocArchiveReader

Throws:

java.io.IOException

isOpen

public boolean isOpen()

flush

public void flush()
           throws java.io.IOException

Description copied from interface: IDocArchiveWriter

This function flushs all the buffers in the writer

Specified by:

flush in interface IDocArchiveWriter

Throws:

java.io.IOException

closeAllStream

protected void closeAllStream()

lock

public java.lang.Object lock(java.lang.String stream)
                      throws java.io.IOException

Description copied from interface: IDocArchiveReader

try to lock the stream

Specified by:

lock in interface IDocArchiveReader

Specified by:

lock in interface IDocArchiveWriter

Returns:

the locker.

Throws:

java.io.IOException

unlock

public void unlock(java.lang.Object lock)

Description copied from interface: IDocArchiveReader

unlock the stream locked by the object.

Specified by:

unlock in interface IDocArchiveReader

Specified by:

unlock in interface IDocArchiveWriter

Parameters:

lock - object returned by the lock().