com.caucho.vfs

Class DatastoreWriteStream

java.lang.Object

com.caucho.vfs.StreamImpl

com.caucho.vfs.VfsStream

com.caucho.vfs.DatastoreWriteStream

All Implemented Interfaces:

LockableStream

public class DatastoreWriteStream
extends VfsStream
implements LockableStream

Stream encapsulating FileOutputStream

Field Summary

Fields inherited from class com.caucho.vfs.StreamImpl

_nullPath, _path

Constructor Summary

Constructors

Constructor and Description
DatastoreWriteStream(DatastoreOutputStream fos) Create a new FileWriteStream based on the java.io.* stream.
DatastoreWriteStream(DatastoreOutputStream fos, Path path) Create a new FileWriteStream based on the java.io.* stream.

Method Summary

Modifier and Type	Method and Description
void	close() Closes the underlying stream.
boolean	lock(boolean shared, boolean block) Lock the shared advisory lock.
void	seekStart(long pos) Seeks based on the start.
boolean	unlock() Unlock the advisory lock.

Methods inherited from class com.caucho.vfs.VfsStream

canRead, canWrite, flush, flushToDisk, getAvailable, getFlushOnNewline, getNewline, getReadPosition, hasSkip, init, openRead, openRead, openReadWrite, openWrite, read, setCloseChildOnClose, setFlushOnNewline, setNewline, skip, toString, write

Methods inherited from class com.caucho.vfs.StreamImpl

clearWrite, closeWrite, flushBuffer, getAttribute, getAttributeNames, getPath, getReadBuffer, isClosed, isEof, isMmapEnabled, isSendfileEnabled, readNonBlock, readTimeout, removeAttribute, seekEnd, setAttribute, setPath, setWriteEncoding, write, writeMmap, writeSendfile

Methods inherited from class java.lang.Object

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

Constructor Detail

DatastoreWriteStream

public DatastoreWriteStream(DatastoreOutputStream fos)

Create a new FileWriteStream based on the java.io.* stream.

Parameters:

fos - the underlying file output stream.

DatastoreWriteStream

public DatastoreWriteStream(DatastoreOutputStream fos,
                            Path path)

Create a new FileWriteStream based on the java.io.* stream.

Parameters:

fos - the underlying file output stream.

path - the associated Path.

Method Detail

close

public void close()
           throws java.io.IOException

Closes the underlying stream.

Overrides:

close in class VfsStream

Throws:

java.io.IOException

lock

public boolean lock(boolean shared,
                    boolean block)

Description copied from interface: LockableStream

Lock the shared advisory lock. This method will create a shared "read" lock when the shared argument is true and an exclusive "write" lock when the shared argument is false. If the block argument is false then this call will not block if the lock can't be obtained.

Specified by:

lock in interface LockableStream

unlock

public boolean unlock()

Description copied from interface: LockableStream

Unlock the advisory lock. Return true if a lock was held, false otherwise.

Specified by:

unlock in interface LockableStream

seekStart

public void seekStart(long pos)
               throws java.io.IOException

Seeks based on the start.

Overrides:

seekStart in class StreamImpl

Throws:

java.io.IOException