org.eclipse.m2e.core.internal.builder.plexusbuildapi

Class ChangedFileOutputStream

java.lang.Object

java.io.OutputStream

org.eclipse.m2e.core.internal.builder.plexusbuildapi.ChangedFileOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class ChangedFileOutputStream
extends java.io.OutputStream

Writes to the file only if content of the file is different. TODO. Current implementation defers actual writing to the output file until invocation of close() method. This results in missed/ignored IOExceptions in some cases. First, OutputStream.flush() method does not actually flush buffer to the disk. Second, any problems writing to the file will be reported as IOException thrown by close(), which are generally ignored.

Field Summary

Fields

Modifier and Type	Field and Description
private java.io.ByteArrayOutputStream	buffer
private org.sonatype.plexus.build.incremental.BuildContext	buildContext
private java.io.File	file
private java.io.OutputStream	os

Constructor Summary

Constructors

Constructor and Description
ChangedFileOutputStream(java.io.File file)
ChangedFileOutputStream(java.io.File file, org.sonatype.plexus.build.incremental.BuildContext buildContext)

Method Summary

Modifier and Type	Method and Description
void	close()
void	write(byte[] b, int off, int len)
void	write(int b)
protected void	writeIfNewOrChanged()

Methods inherited from class java.io.OutputStream

flush, write

Methods inherited from class java.lang.Object

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

Field Detail

file

private final java.io.File file

buildContext

private final org.sonatype.plexus.build.incremental.BuildContext buildContext

os

private final java.io.OutputStream os

buffer

private java.io.ByteArrayOutputStream buffer

Constructor Detail

ChangedFileOutputStream

public ChangedFileOutputStream(java.io.File file)
                        throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

ChangedFileOutputStream

public ChangedFileOutputStream(java.io.File file,
                               org.sonatype.plexus.build.incremental.BuildContext buildContext)
                        throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

Method Detail

write

public void write(int b)

Specified by:

write in class java.io.OutputStream

write

public void write(byte[] b,
                  int off,
                  int len)

Overrides:

write in class java.io.OutputStream

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException

writeIfNewOrChanged

protected void writeIfNewOrChanged()
                            throws java.io.IOException

Throws:

java.io.IOException