org.apache.jdo.impl.state
Class SCOProcessor

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

class SCOProcessor

extends java.lang.Object

This is the helper class to process SCO-related requests from the StateManager.

Version:

1.0

Author:

Marina Vatkina

Nested Class Summary

(package private) class	SCOProcessor.CollectionProcessor Processor for trackUpdates request for SCOCollection.
(package private) class	SCOProcessor.DateProcessor Processor for trackUpdates request for SCODate.
(package private) class	SCOProcessor.MapProcessor Processor for trackUpdates request for SCOMap.
(package private) class	SCOProcessor.Processor An abstract class that knows how process SCO-related requests.

Field Summary

private static RuntimeJavaModelFactory	javaModelFactory RuntimeJavaModelFactory.
private static org.apache.jdo.util.I18NHelper	msg I18N message handler
private java.util.HashMap	processors Map of possible processors.
private java.util.HashMap	scoprocessors
private static SCOProcessor	singleton The singleton ReachabilityHandler instance.

Constructor Summary

private

SCOProcessor() Constructs a new SCOProcessor without specific parameters.

Method Summary

(package private) void	assertSCOElementType(java.lang.Object o, org.apache.jdo.model.jdo.JDOField jdoField) Assert element type of an SCO Collection or key and value types of an SCO Map.
static SCOProcessor	getInstance() Get the SCOProcessor singleton instance.
(package private) SCO	getSCOField(java.lang.Object o, org.apache.jdo.model.jdo.JDOField jdoField, PersistenceManagerInternal pm) Process requests to create a tracked SCO instance for the corresponding JDK SCO.
(package private) void	trackUpdates(StateManagerImpl sm, int field, SCO sco) Process requests to trackUpdates for SCO changes.

Methods inherited from class java.lang.Object

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

Field Detail

singleton

private static final SCOProcessor singleton

The singleton ReachabilityHandler instance.

processors

private final java.util.HashMap processors

Map of possible processors.

scoprocessors

private final java.util.HashMap scoprocessors

msg

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

I18N message handler

javaModelFactory

private static final RuntimeJavaModelFactory javaModelFactory

RuntimeJavaModelFactory.

Constructor Detail

SCOProcessor

private SCOProcessor()

Constructs a new SCOProcessor without specific parameters. Initializes processors maps.

Method Detail

getInstance

public static SCOProcessor getInstance()

Get the SCOProcessor singleton instance.

Returns:

an instance of SCOProcessor

trackUpdates

void trackUpdates(StateManagerImpl sm,
                  int field,
                  SCO sco)

Process requests to trackUpdates for SCO changes.

Parameters:

sm - - StateManagerImpl instance that requested processing.

field - the field number associated with this SCO.

sco - Object to process.

getSCOField

SCO getSCOField(java.lang.Object o,
                org.apache.jdo.model.jdo.JDOField jdoField,
                PersistenceManagerInternal pm)

Process requests to create a tracked SCO instance for the corresponding JDK SCO.

Parameters:

o - Object to be replaced with tracked SCO instance.

jdoField - the JDOField associated with this number.

pm - the PersistenceManagerInternal instance associated with the caller.

assertSCOElementType

void assertSCOElementType(java.lang.Object o,
                          org.apache.jdo.model.jdo.JDOField jdoField)

Assert element type of an SCO Collection or key and value types of an SCO Map.

Parameters:

o - Object to be tested.

jdoField - the corresponding JDOField element.

Throws:

javax.jdo.JDOUserException - if assertion fails.