Class AbstractFilePersistenceStrategy

java.lang.Object

com.thoughtworks.xstream.persistence.AbstractFilePersistenceStrategy

All Implemented Interfaces:

PersistenceStrategy

Direct Known Subclasses:

FilePersistenceStrategy, FileStreamStrategy

public abstract class AbstractFilePersistenceStrategy
extends Object
implements PersistenceStrategy

Abstract base class for file based persistence strategies.

Since:

1.3.1

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected class	AbstractFilePersistenceStrategy.ValidFilenameFilter
protected class	AbstractFilePersistenceStrategy.XmlMapEntriesIterator

Field Summary

Fields

Modifier and Type	Field	Description
private final File	baseDirectory
private final String	encoding
private final FilenameFilter	filter
private final XStream	xstream

Constructor Summary

Constructors

Constructor	Description
AbstractFilePersistenceStrategy(File baseDirectory, XStream xstream, String encoding)

Method Summary

Modifier and Type	Method	Description
boolean	containsKey(Object key)
protected abstract Object	extractKey(String name)	Given a filename, the unescape method returns the key which originated it.
Object	get(Object key)
protected ConverterLookup	getConverterLookup()
private File	getFile(String filename)
protected Mapper	getMapper()
protected abstract String	getName(Object key)	Given a key, the escape method returns the filename which shall be used.
protected boolean	isValid(File dir, String name)
Iterator	iterator()
Object	put(Object key, Object value)
private Object	readFile(File file)
Object	remove(Object key)
int	size()
private void	writeFile(File file, Object value)

Methods inherited from class Object

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

Field Details

filter

private final FilenameFilter filter

baseDirectory

private final File baseDirectory

encoding

private final String encoding

xstream

private final transient XStream xstream

Constructor Details

AbstractFilePersistenceStrategy

public AbstractFilePersistenceStrategy(File baseDirectory,
 XStream xstream,
 String encoding)

Method Details

getConverterLookup

protected ConverterLookup getConverterLookup()

getMapper

protected Mapper getMapper()

isValid

protected boolean isValid(File dir,
 String name)

extractKey

protected abstract Object extractKey(String name)

Given a filename, the unescape method returns the key which originated it.

Parameters:

name - the filename

Returns:

the original key

getName

protected abstract String getName(Object key)

Given a key, the escape method returns the filename which shall be used.

Parameters:

key - the key

Returns:

the desired and escaped filename

writeFile

private void writeFile(File file,
 Object value)

getFile

private File getFile(String filename)

readFile

private Object readFile(File file)

put

public Object put(Object key,
 Object value)

Specified by:

put in interface PersistenceStrategy

iterator

public Iterator iterator()

Specified by:

iterator in interface PersistenceStrategy

size

public int size()

Specified by:

size in interface PersistenceStrategy

containsKey

public boolean containsKey(Object key)

get

public Object get(Object key)

Specified by:

get in interface PersistenceStrategy

remove

public Object remove(Object key)

Specified by:

remove in interface PersistenceStrategy