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JDBCStoreManager2 (JBoss Server API) - JBoss 3.2.7 server API Documentation 英文版文档

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org.jboss.ejb.plugins.cmp.jdbc2
Class JDBCStoreManager2

java.lang.Object
  org.jboss.ejb.plugins.cmp.jdbc2.JDBCStoreManager2

All Implemented Interfaces:

ContainerPlugin, EntityPersistenceStore, JDBCEntityPersistenceStore, org.jboss.system.Service

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public class JDBCStoreManager2

extends Object

implements JDBCEntityPersistenceStore

Version:

$Revision: 1.1.2.18 $

Author:

Alexey Loubyansky

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Constructor Summary

JDBCStoreManager2()

 

Method Summary
void	activateEntity(EntityEnterpriseContext ctx)           This method is called when an entity shall be activated.
void	create()
Object	createBeanClassInstance()           Returns a new instance of the bean class or a subclass of the bean class.
Object	createEntity(Method m, Object[] args, EntityEnterpriseContext ctx)           This method is called whenever an entity is to be created.
void	destroy()
Collection	findEntities(Method finderMethod, Object[] args, EntityEnterpriseContext instance, GenericEntityObjectFactory factory)           This method is called when collections of entities are to be found.
Object	findEntity(Method finderMethod, Object[] args, EntityEnterpriseContext instance, GenericEntityObjectFactory factory)           This method is called when single entities are to be found.
Object	getApplicationData(Object key)
Catalog	getCatalog()
EntityContainer	getContainer()
JDBCAbstractEntityBridge	getEntityBridge()
JDBCTypeFactory	getJDBCTypeFactory()
JDBCEntityMetaData	getMetaData()
QueryFactory	getQueryFactory()
Schema	getSchema()
void	initEntity(EntityEnterpriseContext ctx)           Initializes the instance context.
protected  void	initStoreManager()
boolean	isCascadeDeleted(Object key)
boolean	isModified(EntityEnterpriseContext instance)           This method is used to determined whether the instance was modified.
boolean	isStoreRequired(EntityEnterpriseContext instance)           This method is used to determine if an entity should be stored.
void	loadEntity(EntityEnterpriseContext ctx)           This method is called whenever an entity shall be load from the underlying storage.
void	passivateEntity(EntityEnterpriseContext ctx)           This method is called when an entity shall be passivate.
Object	postCreateEntity(Method m, Object[] args, EntityEnterpriseContext ctx)           This method is called after the createEntity.
void	putApplicationData(Object key, Object value)
boolean	registerCascadeDelete(Object key, Object value)
void	removeEntity(EntityEnterpriseContext ctx)           This method is called when an entity shall be removed from the underlying storage.
void	setContainer(Container con)           This callback is set by the container so that the plugin may access it
void	start()
protected  void	startStoreManager()
void	stop()
void	storeEntity(EntityEnterpriseContext instance)           This method is called whenever an entity shall be stored to the underlying storage.
void	unregisterCascadeDelete(Object key)

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

JDBCStoreManager2

public JDBCStoreManager2()

Method Detail

getSchema

public Schema getSchema()

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getCatalog

public Catalog getCatalog()

Specified by:

getCatalog in interface JDBCEntityPersistenceStore

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getQueryFactory

public QueryFactory getQueryFactory()

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registerCascadeDelete

public boolean registerCascadeDelete(Object key,
                                     Object value)

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isCascadeDeleted

public boolean isCascadeDeleted(Object key)

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unregisterCascadeDelete

public void unregisterCascadeDelete(Object key)

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setContainer

public void setContainer(Container con)

Description copied from interface: ContainerPlugin

This callback is set by the container so that the plugin may access it

Specified by:

setContainer in interface ContainerPlugin

Parameters:

con - The container using this plugin. This may be null if the plugin is being disassociated from a container.

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create

public void create()
            throws Exception

Specified by:

create in interface org.jboss.system.Service

Throws:

Exception

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start

public void start()
           throws Exception

Specified by:

start in interface org.jboss.system.Service

Throws:

Exception

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stop

public void stop()

Specified by:

stop in interface org.jboss.system.Service

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destroy

public void destroy()

Specified by:

destroy in interface org.jboss.system.Service

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getEntityBridge

public JDBCAbstractEntityBridge getEntityBridge()

Specified by:

getEntityBridge in interface JDBCEntityPersistenceStore

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getMetaData

public JDBCEntityMetaData getMetaData()

Specified by:

getMetaData in interface JDBCEntityPersistenceStore

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getJDBCTypeFactory

public JDBCTypeFactory getJDBCTypeFactory()

Specified by:

getJDBCTypeFactory in interface JDBCEntityPersistenceStore

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getContainer

public EntityContainer getContainer()

Specified by:

getContainer in interface JDBCEntityPersistenceStore

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getApplicationData

public Object getApplicationData(Object key)

Specified by:

getApplicationData in interface JDBCEntityPersistenceStore

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putApplicationData

public void putApplicationData(Object key,
                               Object value)

Specified by:

putApplicationData in interface JDBCEntityPersistenceStore

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createBeanClassInstance

public Object createBeanClassInstance()
                               throws Exception

Description copied from interface: EntityPersistenceStore

Returns a new instance of the bean class or a subclass of the bean class.

Specified by:

createBeanClassInstance in interface EntityPersistenceStore

Returns:

the new instance

Throws:

Exception

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initEntity

public void initEntity(EntityEnterpriseContext ctx)

Description copied from interface: EntityPersistenceStore

Initializes the instance context.

This method is called before createEntity, and should resetStats the value of all cmpFields to 0 or null.

Specified by:

initEntity in interface EntityPersistenceStore

Parameters:

ctx -

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createEntity

public Object createEntity(Method m,
                           Object[] args,
                           EntityEnterpriseContext ctx)
                    throws javax.ejb.CreateException

Description copied from interface: EntityPersistenceStore

This method is called whenever an entity is to be created. The persistence manager is responsible for handling the results properly wrt the persistent store.

Specified by:

createEntity in interface EntityPersistenceStore

Parameters:

m - the create method in the home interface that was called

args - any create parameters

ctx - the instance being used for this create call

Returns:

The primary key computed by CMP PM or null for BMP

Throws:

javax.ejb.CreateException

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postCreateEntity

public Object postCreateEntity(Method m,
                               Object[] args,
                               EntityEnterpriseContext ctx)
                        throws javax.ejb.CreateException

Description copied from interface: EntityPersistenceStore

This method is called after the createEntity. The persistence manager is responsible for handling the results properly wrt the persistent store.

Specified by:

postCreateEntity in interface EntityPersistenceStore

Parameters:

m - the ejbPostCreate method in the bean class that was called

args - any create parameters

ctx - the instance being used for this create call

Returns:

null

Throws:

javax.ejb.CreateException

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findEntity

public Object findEntity(Method finderMethod,
                         Object[] args,
                         EntityEnterpriseContext instance,
                         GenericEntityObjectFactory factory)
                  throws javax.ejb.FinderException

Description copied from interface: EntityPersistenceStore

This method is called when single entities are to be found. The persistence manager must find out whether the wanted instance is available in the persistence store, if so it returns the primary key of the object.

Specified by:

findEntity in interface EntityPersistenceStore

Parameters:

finderMethod - the find method in the home interface that was called

args - any finder parameters

instance - the instance to use for the finder call

Returns:

a primary key representing the found entity

Throws:

javax.ejb.FinderException

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findEntities

public Collection findEntities(Method finderMethod,
                               Object[] args,
                               EntityEnterpriseContext instance,
                               GenericEntityObjectFactory factory)
                        throws javax.ejb.FinderException

Description copied from interface: EntityPersistenceStore

This method is called when collections of entities are to be found. The persistence manager must find out whether the wanted instances are available in the persistence store, and if so it must return a collection of primaryKeys.

Specified by:

findEntities in interface EntityPersistenceStore

Parameters:

finderMethod - the find method in the home interface that was called

args - any finder parameters

instance - the instance to use for the finder call

Returns:

an primary key collection representing the found entities

Throws:

javax.ejb.FinderException

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activateEntity

public void activateEntity(EntityEnterpriseContext ctx)

Description copied from interface: EntityPersistenceStore

This method is called when an entity shall be activated.

With the PersistenceManager factorization most EJB calls should not exists However this calls permits us to introduce optimizations in the persistence store. Particularly the context has a "PersistenceContext" that a PersistenceStore can use (JAWS does for smart updates) and this is as good a callback as any other to set it up.

Specified by:

activateEntity in interface EntityPersistenceStore

Parameters:

ctx - the instance to use for the activation

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loadEntity

public void loadEntity(EntityEnterpriseContext ctx)

Description copied from interface: EntityPersistenceStore

This method is called whenever an entity shall be load from the underlying storage. The persistence manager must load the state from the underlying storage and then call ejbLoad on the supplied instance.

Specified by:

loadEntity in interface EntityPersistenceStore

Parameters:

ctx - the instance to synchronize

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isStoreRequired

public boolean isStoreRequired(EntityEnterpriseContext instance)

Description copied from interface: EntityPersistenceStore

This method is used to determine if an entity should be stored.

Specified by:

isStoreRequired in interface EntityPersistenceStore

Parameters:

instance - the instance to check

Returns:

true, if the entity has been modified

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isModified

public boolean isModified(EntityEnterpriseContext instance)
                   throws Exception

Description copied from interface: EntityPersistenceStore

This method is used to determined whether the instance was modified. NOTE, even if the method returns true the isStoreRequired for this same instance might return false, e.g. a CMR field that doesn't have a foreign key was modified.

Specified by:

isModified in interface EntityPersistenceStore

Parameters:

instance -

Returns:

Throws:

Exception

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storeEntity

public void storeEntity(EntityEnterpriseContext instance)

Description copied from interface: EntityPersistenceStore

This method is called whenever an entity shall be stored to the underlying storage. The persistence manager must call ejbStore on the supplied instance and then store the state to the underlying storage.

Specified by:

storeEntity in interface EntityPersistenceStore

Parameters:

instance - the instance to synchronize

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passivateEntity

public void passivateEntity(EntityEnterpriseContext ctx)

Description copied from interface: EntityPersistenceStore

This method is called when an entity shall be passivate. The persistence manager must call the ejbPassivate method on the instance.

See the activate discussion for the reason for exposing EJB callback calls to the store.

Specified by:

passivateEntity in interface EntityPersistenceStore

Parameters:

ctx - the instance to passivate

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removeEntity

public void removeEntity(EntityEnterpriseContext ctx)
                  throws javax.ejb.RemoveException

Description copied from interface: EntityPersistenceStore

This method is called when an entity shall be removed from the underlying storage. The persistence manager must call ejbRemove on the instance and then remove its state from the underlying storage.

Specified by:

removeEntity in interface EntityPersistenceStore

Parameters:

ctx - the instance to remove

Throws:

javax.ejb.RemoveException - thrown if the instance could not be removed

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initStoreManager

protected void initStoreManager()
                         throws Exception

Throws:

Exception

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startStoreManager

protected void startStoreManager()
                          throws Exception

Throws:

Exception

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