com.goldencode.p2j.persist

Class DynamicTablesHelper.Context

java.lang.Object

com.goldencode.p2j.persist.DynamicTablesHelper.Context

All Implemented Interfaces:

Finalizable

Enclosing class:

DynamicTablesHelper

private class DynamicTablesHelper.Context
extends java.lang.Object
implements Finalizable

Context local information, used to clean up resources when the context ends and to respond to queries about temp-table resources in use.

TODO: currently, the cleanup code is based on an incorrect assumption that the context's state is reset more frequently than it actually is, AND, in some cases, we are cleaning up resources prematurely, causing persistence errors when detached objects in an old Hibernate session are reattached to a new one. The temporary workaround for this is a high cache limit, to prevent the cache from expiring elements.

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<java.lang.Class<? extends DataModelObject>,DynamicTablesHelper.DMOInfo>	dmoMap Map of DMO interfaces to DMO information objects
private java.util.Map<java.lang.Class<?>,java.util.Set<TempTableBuilder>>	dmoUsers Map of DMO interfaces to sets of users of these interfaces
private java.util.List<TempTableBuilder>	finishedBuilders Temp-table builders which are no longer in use in this context

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Context() Constructor.

Method Summary

Modifier and Type	Method and Description
private void	cleanup() Clean up DMO resources no longer needed by temp-table builders in this context.
void	deleted() No-op.
void	finished() Clean up local context - drop tables and DMO definitions.
private DynamicTablesHelper.DMOInfo	getDMOInfo(java.lang.Class<? extends DataModelObject> dmoIface) Get the DMO information object associated with the given DMO interface.
void	iterate() No-op.
private void	registerBuilder(TempTableBuilder builder) Register a dynamic temp-table builder in this context.
private boolean	registerDMOInfo(java.lang.Class<? extends DataModelObject> dmoIface, DynamicTablesHelper.DMOInfo dmoInfo) Associate a DMO information object with the given DMO interface.
void	retry() No-op.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.goldencode.p2j.util.Finalizable

entry, initFailure, weight

Field Detail

dmoUsers

private final java.util.Map<java.lang.Class<?>,java.util.Set<TempTableBuilder>> dmoUsers

Map of DMO interfaces to sets of users of these interfaces

dmoMap

private final java.util.Map<java.lang.Class<? extends DataModelObject>,DynamicTablesHelper.DMOInfo> dmoMap

Map of DMO interfaces to DMO information objects

finishedBuilders

private java.util.List<TempTableBuilder> finishedBuilders

Temp-table builders which are no longer in use in this context

Constructor Detail

Context

private Context()

Constructor. Registers this object as a global finalizable.

Method Detail

finished

public void finished()

Clean up local context - drop tables and DMO definitions.

Specified by:

finished in interface Finalizable

deleted

public void deleted()

No-op.

Specified by:

deleted in interface Finalizable

iterate

public void iterate()

No-op.

Specified by:

iterate in interface Finalizable

retry

public void retry()

No-op.

Specified by:

retry in interface Finalizable

cleanup

private void cleanup()

Clean up DMO resources no longer needed by temp-table builders in this context.

registerBuilder

private void registerBuilder(TempTableBuilder builder)

Register a dynamic temp-table builder in this context.

Parameters:

builder - Temp-table builder to be registered.

getDMOInfo

private DynamicTablesHelper.DMOInfo getDMOInfo(java.lang.Class<? extends DataModelObject> dmoIface)

Get the DMO information object associated with the given DMO interface.

Parameters:

dmoIface - DMO interface.

Returns:

See above.

registerDMOInfo

private boolean registerDMOInfo(java.lang.Class<? extends DataModelObject> dmoIface,
                                DynamicTablesHelper.DMOInfo dmoInfo)

Associate a DMO information object with the given DMO interface.

Parameters:

dmoIface - DMO interface.

dmoInfo - DMO information object.

Returns:

true if dmoIface was not already associated with a different object, else false.