Package com.sun.enterprise.admin.servermgmt.stringsubs.impl

Class LargeFileSubstitutionHandler

java.lang.Object

com.sun.enterprise.admin.servermgmt.stringsubs.impl.FileSubstitutionHandler

com.sun.enterprise.admin.servermgmt.stringsubs.impl.LargeFileSubstitutionHandler

All Implemented Interfaces:

Substitutable

public class LargeFileSubstitutionHandler
extends FileSubstitutionHandler

Creates Reader and Writer for the String substitution file. Implementation is useful for large files which cann't be read entirely in a memory or need a substantial amount of memory.

To perform substitution it take helps of temporary file to write output, after substitution, temporary file renamed to input file.

Field Summary

Fields inherited from class com.sun.enterprise.admin.servermgmt.stringsubs.impl.FileSubstitutionHandler

_inputFile, _logger, _reader, _strings, _writer

Constructor Summary

Constructors

Constructor	Description
LargeFileSubstitutionHandler(File file)

Method Summary

Modifier and Type	Method	Description
void	finish()	Called at the completion of the substitution process to perform post operation.
Reader	getReader()	Gets the character stream from the input.
Writer	getWriter()	Gets the Writer object to write the character stream in to the output.

Methods inherited from class com.sun.enterprise.admin.servermgmt.stringsubs.impl.FileSubstitutionHandler

getName

Methods inherited from class java.lang.Object

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

Constructor Details

LargeFileSubstitutionHandler

public LargeFileSubstitutionHandler(File file)
                             throws FileNotFoundException

Throws:

FileNotFoundException

Method Details

getReader

public Reader getReader()

Description copied from interface: Substitutable

Gets the character stream from the input.

Implementation note: It is a good idea for the input stream to be buffered.

Returns:

A Reader.

getWriter

public Writer getWriter()

Description copied from interface: Substitutable

Gets the Writer object to write the character stream in to the output.

Implementation note: It is a good idea for the output stream to be buffered.

Returns:

A Writer.

finish

public void finish()

Description copied from interface: Substitutable

Called at the completion of the substitution process to perform post operation. For e.g closing of reader/writer, cleaning of the temporary data... etc.

Specified by:

finish in interface Substitutable

Overrides:

finish in class FileSubstitutionHandler