org.fuin.utils4j
Class PropertiesFilePreferences

java.lang.Object
  java.util.prefs.Preferences
      java.util.prefs.AbstractPreferences
          org.fuin.utils4j.PropertiesFilePreferences

public final class PropertiesFilePreferences
extends AbstractPreferences

A directory and PropertiesFile based Preferences API implementation.

Field Summary

static String

FILENAME Filename the properties of this node are stored under.

Fields inherited from class java.util.prefs.AbstractPreferences

lock, newNode

Fields inherited from class java.util.prefs.Preferences

MAX_KEY_LENGTH, MAX_NAME_LENGTH, MAX_VALUE_LENGTH

Constructor Summary

PropertiesFilePreferences(File dir)
Constructor with directory.

PropertiesFilePreferences(PropertiesFilePreferences parent, File dir)
Constructor with parent node and directory.

Method Summary

protected String[]	childrenNamesSpi()
protected AbstractPreferences	childSpi(String name)
protected void	flushSpi()
protected String	getSpi(String key)
protected String[]	keysSpi()
protected void	putSpi(String key, String value)
protected void	removeNodeSpi()
protected void	removeSpi(String key)
protected void	syncSpi()
Properties	toProperties() Returns a copy of all properties.

Methods inherited from class java.util.prefs.AbstractPreferences

absolutePath, addNodeChangeListener, addPreferenceChangeListener, cachedChildren, childrenNames, clear, exportNode, exportSubtree, flush, get, getBoolean, getByteArray, getChild, getDouble, getFloat, getInt, getLong, isRemoved, isUserNode, keys, name, node, nodeExists, parent, put, putBoolean, putByteArray, putDouble, putFloat, putInt, putLong, remove, removeNode, removeNodeChangeListener, removePreferenceChangeListener, sync, toString

Methods inherited from class java.util.prefs.Preferences

importPreferences, systemNodeForPackage, systemRoot, userNodeForPackage, userRoot

Methods inherited from class java.lang.Object

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

Field Detail

FILENAME

public static final String FILENAME

Filename the properties of this node are stored under.

See Also:

Constant Field Values

Constructor Detail

PropertiesFilePreferences

public PropertiesFilePreferences(File dir)

Constructor with directory. This is constructing the "root" node.

Parameters:

dir - Directory where the preferences are stored.

PropertiesFilePreferences

public PropertiesFilePreferences(PropertiesFilePreferences parent,
                                 File dir)

Constructor with parent node and directory.

Parameters:

parent - Parent node.

dir - Directory where the preferences are stored.

Method Detail

childSpi

protected final AbstractPreferences childSpi(String name)

Specified by:

childSpi in class AbstractPreferences

childrenNamesSpi

protected final String[] childrenNamesSpi()
                                   throws BackingStoreException

Specified by:

childrenNamesSpi in class AbstractPreferences

Throws:

BackingStoreException

flushSpi

protected void flushSpi()
                 throws BackingStoreException

Specified by:

flushSpi in class AbstractPreferences

Throws:

BackingStoreException

getSpi

protected final String getSpi(String key)

Specified by:

getSpi in class AbstractPreferences

keysSpi

protected final String[] keysSpi()
                          throws BackingStoreException

Specified by:

keysSpi in class AbstractPreferences

Throws:

BackingStoreException

putSpi

protected final void putSpi(String key,
                            String value)

Specified by:

putSpi in class AbstractPreferences

removeNodeSpi

protected final void removeNodeSpi()
                            throws BackingStoreException

Specified by:

removeNodeSpi in class AbstractPreferences

Throws:

BackingStoreException

removeSpi

protected final void removeSpi(String key)

Specified by:

removeSpi in class AbstractPreferences

syncSpi

protected final void syncSpi()
                      throws BackingStoreException

Specified by:

syncSpi in class AbstractPreferences

Throws:

BackingStoreException

toProperties

public final Properties toProperties()

Returns a copy of all properties.

Returns:

All key/values without deleted ones.