net.jinx.db
Class LockingXMLHierarchy

java.lang.Object
  net.jinx.db.Hierarchy
      net.jinx.db.SimpleHierarchy
          net.jinx.db.MemoryHierarchy
              net.jinx.db.XMLHierarchy
                  net.jinx.db.LockingXMLHierarchy

All Implemented Interfaces:

java.io.Serializable

public class LockingXMLHierarchy
extends XMLHierarchy

Extension of XMLHierarchy that creates an additional file and then locks it so that any JVM trying to access the files via the same configuration will fail.
Note: This class uses adds a shutdown hook in it's static initializer. It uses this to clean up it's lock files. However, this isn't really all that critical, so if it cannot be added and the JVM exits suddenly, it will leave them behind. They're harmless, empty files and can be deleted. NOTE: Instances of this class cannot be serialized, unlike the super-classes.

API Stability: Alpha.

See Also:

Serialized Form

Constructor Summary

LockingXMLHierarchy(java.io.File xf)

LockingXMLHierarchy(java.io.File xf, java.io.File lf)

LockingXMLHierarchy(java.io.File xf, java.io.File lf, java.io.File lockFile)

LockingXMLHierarchy(java.lang.String xf)

LockingXMLHierarchy(java.lang.String xf, java.lang.String lf)

LockingXMLHierarchy(java.lang.String xf, java.lang.String lf, java.lang.String lockFile)

Method Summary

void	close() Closes this XMLHierarchy.
protected void	finalize()
static boolean	isLocked(java.io.File f)

Methods inherited from class net.jinx.db.XMLHierarchy

commit, main

Methods inherited from class net.jinx.db.MemoryHierarchy

getLog, rollback

Methods inherited from class net.jinx.db.SimpleHierarchy

attributes, clearAttributes, clearNodes, createNode, deleteNode, getAttributeObject, getNode, hasAttribute, nodes, removeAttribute, setAttributeObject

Methods inherited from class net.jinx.db.Hierarchy

addListener, clear, copyTo, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, getAttribute, parseFromProperties, parseFromXML, propertyChanged, removeListener, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, setAttribute, storeToProperties, storeToXML

Methods inherited from class java.lang.Object

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

Constructor Detail

LockingXMLHierarchy

public LockingXMLHierarchy(java.lang.String xf)

LockingXMLHierarchy

public LockingXMLHierarchy(java.lang.String xf,
                           java.lang.String lf)

LockingXMLHierarchy

public LockingXMLHierarchy(java.lang.String xf,
                           java.lang.String lf,
                           java.lang.String lockFile)

LockingXMLHierarchy

public LockingXMLHierarchy(java.io.File xf)

LockingXMLHierarchy

public LockingXMLHierarchy(java.io.File xf,
                           java.io.File lf)

LockingXMLHierarchy

public LockingXMLHierarchy(java.io.File xf,
                           java.io.File lf,
                           java.io.File lockFile)

Method Detail

finalize

protected void finalize()
                 throws java.io.IOException

Overrides:

finalize in class java.lang.Object

Throws:

java.io.IOException

close

public void close()

Description copied from class: XMLHierarchy

Closes this XMLHierarchy. Further commits will only commit to the in-memeory commit/rollback log.

Overrides:

close in class XMLHierarchy

isLocked

public static boolean isLocked(java.io.File f)