org.apache.tika.parser.mp4

Class DirectFileReadDataSource

java.lang.Object

org.apache.tika.parser.mp4.DirectFileReadDataSource

All Implemented Interfaces:

com.googlecode.mp4parser.DataSource, Closeable, AutoCloseable

public class DirectFileReadDataSource
extends Object
implements com.googlecode.mp4parser.DataSource

A DataSource implementation that relies on direct reads from a RandomAccessFile. It should be slower than FileDataSourceImpl but does not incur the implicit file locks of memory mapped I/O on some JVMs. This implementation allows for a more controlled deletion of files and might be preferred when working with temporary files.

See Also:

JDK-4724038 : (fs) Add unmap method to MappedByteBuffer, JDK-6359560 : (fs) File.deleteOnExit() doesn't work when MappedByteBuffer exists (win)

Constructor Summary

Constructors

Constructor and Description
DirectFileReadDataSource(File f)

Method Summary

Methods

Modifier and Type	Method and Description
void	close()
ByteBuffer	map(long startPosition, long size)
long	position()
void	position(long nuPos)
int	read(ByteBuffer byteBuffer)
int	readAllInOnce(ByteBuffer byteBuffer)
long	size()
long	transferTo(long position, long count, WritableByteChannel target)

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectFileReadDataSource

public DirectFileReadDataSource(File f)
                         throws IOException

Throws:

IOException

Method Detail

read

public int read(ByteBuffer byteBuffer)
         throws IOException

Specified by:

read in interface com.googlecode.mp4parser.DataSource

Throws:

IOException

readAllInOnce

public int readAllInOnce(ByteBuffer byteBuffer)
                  throws IOException

Throws:

IOException

size

public long size()
          throws IOException

Specified by:

size in interface com.googlecode.mp4parser.DataSource

Throws:

IOException

position

public long position()
              throws IOException

Specified by:

position in interface com.googlecode.mp4parser.DataSource

Throws:

IOException

position

public void position(long nuPos)
              throws IOException

Specified by:

position in interface com.googlecode.mp4parser.DataSource

Throws:

IOException

transferTo

public long transferTo(long position,
              long count,
              WritableByteChannel target)
                throws IOException

Specified by:

transferTo in interface com.googlecode.mp4parser.DataSource

Throws:

IOException

map

public ByteBuffer map(long startPosition,
             long size)
               throws IOException

Specified by:

map in interface com.googlecode.mp4parser.DataSource

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface com.googlecode.mp4parser.DataSource

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable

Throws:

IOException