org.apache.jdo.impl.model.jdo
Class JDOModelFactoryImplDynamic

java.lang.Object
  org.apache.jdo.impl.model.jdo.JDOModelFactoryImplDynamic

All Implemented Interfaces:

JDOModelFactory

Direct Known Subclasses:

JDOModelFactoryImplCaching

public class JDOModelFactoryImplDynamic

extends java.lang.Object

implements JDOModelFactory

Factory for dynamic JDOModel instances. The factory provides a mechanism to cache JDOModel instances per JavaModel instances.

TBD:

• Check synchronization.

Since:

1.1

Version:

2.0

Author:

Michael Bouschen

Field Summary

private static JDOModelFactory	jdoModelFactory The singleton JDOModelFactory instance.
private java.util.Map	modelCache Map of JDOModel instances, key is the JavaModel getJDOModel(JavaModel javaModel)

Constructor Summary

protected

JDOModelFactoryImplDynamic() Creates new JDOModelFactory.

Method Summary

JDOModel	createJDOModel(JavaModel javaModel, boolean loadXMLMetadataDefault) Creates a new empty JDOModel instance.
static JDOModelFactory	getInstance() Get an instance of JDOModelFactory.
JDOModel	getJDOModel(JavaModel javaModel) Returns the JDOModel instance for the specified javaModel.
JDOModel	getJDOModel(JavaModel javaModel, boolean loadXMLMetadataDefault) Returns the JDOModel instance for the specified javaModel.
void	removeJDOModel(JavaModel javaModel) Removes the JDOModel for the specified javaModel from the JDOModel cache.
void	removeJDOModel(JDOModel jdoModel) Removes the specified jdoModel from the JDOModel cache.

Methods inherited from class java.lang.Object

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

Field Detail

modelCache

private java.util.Map modelCache

Map of JDOModel instances, key is the JavaModel getJDOModel(JavaModel javaModel)

jdoModelFactory

private static JDOModelFactory jdoModelFactory

The singleton JDOModelFactory instance.

Constructor Detail

JDOModelFactoryImplDynamic

protected JDOModelFactoryImplDynamic()

Creates new JDOModelFactory. This constructor should not be called directly; instead, the singleton access method getInstance() should be used.

Method Detail

getInstance

public static JDOModelFactory getInstance()

Get an instance of JDOModelFactory.

Returns:

an instance of JDOModelFactory

createJDOModel

public JDOModel createJDOModel(JavaModel javaModel,
                               boolean loadXMLMetadataDefault)

Creates a new empty JDOModel instance. The returned JDOModel instance uses the specified flag loadXMLMetadataDefault to set the default behavior for the creation of new JDOClass instances using methods JDOModel.createJDOClass(String) and JDOModel.getJDOClass(String) for which the caller doesn't explicitly specify whether to read XML metatdata or not.

Specified by:

createJDOModel in interface JDOModelFactory

Parameters:

loadXMLMetadataDefault - the default setting for whether to read XML metatdata in JDOModel's methods for JDOClass creation.

getJDOModel

public JDOModel getJDOModel(JavaModel javaModel)

Returns the JDOModel instance for the specified javaModel.

Specified by:

getJDOModel in interface JDOModelFactory

Parameters:

javaModel - the javaModel used to cache the returned JDOModel instance.

getJDOModel

public JDOModel getJDOModel(JavaModel javaModel,
                            boolean loadXMLMetadataDefault)

Returns the JDOModel instance for the specified javaModel. The returned JDOModel instance uses the specified flag loadXMLMetadataDefault to set the default behavior for the creation of new JDOClass instances using methods JDOModel.createJDOClass(String) and JDOModel.getJDOClass(String) for which the caller doesn't explicitly specify whether to read XML metatdata or not.

Specified by:

getJDOModel in interface JDOModelFactory

Parameters:

loadXMLMetadataDefault - the default setting for whether to read XML metatdata in JDOModel's methods for JDOClass creation.

removeJDOModel

public void removeJDOModel(JDOModel jdoModel)

Removes the specified jdoModel from the JDOModel cache. Note, if there are multiple entries in the cache with the specified jdoModel as value, then all of them get removed. The method does not have an effect, if this factory does not have the specified jdoModel.

Specified by:

removeJDOModel in interface JDOModelFactory

Parameters:

jdoModel - the JDOModel to be removed.

Since:

2.0

removeJDOModel

public void removeJDOModel(JavaModel javaModel)

Removes the JDOModel for the specified javaModel from the JDOModel cache. The method does not have an effect, if this factory does not have a JDOModel for the the specified javaModel.

Specified by:

removeJDOModel in interface JDOModelFactory

Parameters:

javaModel - the javaModel used to find the JDOModel instance to be removed.

Since:

2.0