org.apache.jdo.impl.state
Class ReachabilityHandler

java.lang.Object
  org.apache.jdo.impl.state.ReachabilityHandler

class ReachabilityHandler

extends java.lang.Object

This is the helper class to process persistence-by-reachability requests from the StateManager.

Version:

1.0

Author:

Marina Vatkina

Nested Class Summary

(package private) class	ReachabilityHandler.AutoPersistentProcessor Processor for MakeAutoPersistent request.
(package private) class	ReachabilityHandler.MakePersistentProcessor Processor for MakePersistent request.
(package private) class	ReachabilityHandler.Processor An abstract class that knows how process reachability requests.

Field Summary

private static org.apache.commons.logging.Log	logger Logger instance
private static org.apache.jdo.util.I18NHelper	msg I18N message handler
private java.util.HashMap	processors Map of possible processors.
private static ReachabilityHandler	singleton The singleton ReachabilityHandler instance.

Constructor Summary

private

ReachabilityHandler() Constructs a new ReachabilityHandler without specific parameters.

Method Summary

private void	debug(java.lang.String msg) Tracing method
private boolean	debugging() Verifies if debugging is enabled.
private java.lang.Boolean	getBoolean(boolean type) Translates boolean value into Boolean.
static ReachabilityHandler	getInstance() Get the ReachabilityHandler singleton instance.
(package private) void	process(java.lang.Object o, PersistenceManagerInternal pm, boolean type) Process recursevely requests for persistence-by-reachability.

Methods inherited from class java.lang.Object

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

Field Detail

singleton

private static final ReachabilityHandler singleton

The singleton ReachabilityHandler instance.

processors

private final java.util.HashMap processors

Map of possible processors.

msg

private static final org.apache.jdo.util.I18NHelper msg

I18N message handler

logger

private static final org.apache.commons.logging.Log logger

Logger instance

Constructor Detail

ReachabilityHandler

private ReachabilityHandler()

Constructs a new ReachabilityHandler without specific parameters.

Method Detail

getInstance

public static ReachabilityHandler getInstance()

Get the ReachabilityHandler singleton instance.

Returns:

an instance of ReachabilityHandler

process

void process(java.lang.Object o,
             PersistenceManagerInternal pm,
             boolean type)

Process recursevely requests for persistence-by-reachability.

Parameters:

o - Object to process.

pm - the PersistenceManagerInternal instance associated with the caller.

type - true if the request comes during the commit operation.

getBoolean

private java.lang.Boolean getBoolean(boolean type)

Translates boolean value into Boolean.

Parameters:

type - as boolean.

Returns:

corresponding Boolean object.

debug

private void debug(java.lang.String msg)

Tracing method

Parameters:

msg - String to display

debugging

private boolean debugging()

Verifies if debugging is enabled.

Returns:

true if debugging is enabled.