com.sun.squawk.platform
Class BaseGCFFile

java.lang.Object
  com.sun.squawk.platform.BaseGCFFile

All Implemented Interfaces:

GCFFile

Direct Known Subclasses:

GCFFileImpl, GCFFileImpl

public abstract class BaseGCFFile
extends Object
implements GCFFile

Base class of common implementation of GCFFile

Author:

dw29446

Field Summary

static int	INVALID_HANDLE
protected String	nativeFileName File name.
protected int	readHandle Read handle.
protected int	writeHandle Write handle.

Constructor Summary

BaseGCFFile()

Method Summary

void	close() Close file associated with this handler.
void	closeForReadWrite() Closes the file for both reading and writing.
void	connect(String rootName, String fileName) Connect file handler to the abstract file target.
static char	getFileSeparator() Gets the system-dependent file separator character.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.sun.squawk.platform.GCFFile

closeForRead, closeForWrite, create, delete, exists, fileSize, flush, illegalFileNameChars, isDirectory, openForRead, openForWrite, positionForWrite, read, write

Field Detail

INVALID_HANDLE

public static final int INVALID_HANDLE

See Also:

Constant Field Values

readHandle

protected int readHandle

Read handle.

writeHandle

protected int writeHandle

Write handle.

nativeFileName

protected String nativeFileName

File name.

Constructor Detail

BaseGCFFile

public BaseGCFFile()

Method Detail

connect

public void connect(String rootName,
                    String fileName)

Connect file handler to the abstract file target. This operation should not trigger any access to the native filesystem.

Specified by:

connect in interface GCFFile

Parameters:

rootName - The name of the root directory.

fileName - Full path to the file to be handled by this handler.

Throws:

IllegalArgumentException - if filename contains characters not allowed by the file system. This check should not involve any actual access to the filesystem.

getFileSeparator

public static char getFileSeparator()

Gets the system-dependent file separator character.

Returns:

The file separator character.

close

public void close()
           throws IOException

Close file associated with this handler. Open file and all system resources should be released by this call. Handler object can be reused by subsequent call to connect().

Specified by:

close in interface GCFFile

Throws:

IOException - if I/O error occurs

closeForReadWrite

public void closeForReadWrite()
                       throws IOException

Closes the file for both reading and writing.

Specified by:

closeForReadWrite in interface GCFFile

Throws:

IOException - if any error occurs during input/output operations.