org.jvnet.hk2.config.provider.internal
Class ConfigTransactionImpl

java.lang.Object
  org.jvnet.hk2.config.provider.internal.ConfigTransactionImpl

All Implemented Interfaces:

InjectionResolverQuery, ConfigTransaction

@Service
public class ConfigTransactionImpl
extends Object
implements ConfigTransaction, InjectionResolverQuery

Implementation for ConfigTransaction.

Author:

Jeff Trent

Method Summary

void	commit() Locks changes, calls prepare (if not yet performed), followed by commit if no prepare errors.
void	commit(Map<Object,Object> beanReplacements) Same basic behavior as ConfigTransaction.commit() with the added ability to substitute configuration beans used in the prepare phase with the final bean object replacements that should be managed.
void	created(Object createdConfigBean, String name, MultiMap<String,String> metadata) Add configuration beans to the transaction.
void	deleted(Collection<?> deletedConfigBeans)
void	deleted(Object deleted) Marks configuration beans as having been deleted.
<V> V	getValue(Object component, Inhabitant<?> onBehalfOf, AnnotatedElement annotated, Type genericType, Class<V> type) override of InjectionResolverQuery to provide view of changes scoped to this txn context.
void	prepare() Locks changes, calls prepare.
void	rollback() Cancels the transaction, locking it out from further changes.
void	updated(Collection<?> updatedConfigBeans)
void	updated(Object updated, PropertyChangeEvent event) Mark configuration beans as having been updated (note that name and metadata cannot change here).

Methods inherited from class java.lang.Object

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

Method Detail

prepare

public void prepare()
             throws ConfigTransactionException

Description copied from interface: ConfigTransaction

Locks changes, calls prepare.

Specified by:

prepare in interface ConfigTransaction

Throws:

ConfigTransactionException

commit

public void commit()
            throws ConfigTransactionException

Description copied from interface: ConfigTransaction

Locks changes, calls prepare (if not yet performed), followed by commit if no prepare errors. If prepare errors exists, calls rollback on the constituent configuration beans.

Specified by:

commit in interface ConfigTransaction

Throws:

ConfigTransactionException

commit

public void commit(Map<Object,Object> beanReplacements)
            throws ConfigTransactionException

Description copied from interface: ConfigTransaction

Same basic behavior as ConfigTransaction.commit() with the added ability to substitute configuration beans used in the prepare phase with the final bean object replacements that should be managed.

This is an important variant when the configuration beans in the prepare phase are transient in nature.

Specified by:

commit in interface ConfigTransaction

Parameters:

beanReplacements - mapping from the bean instance used in prepare, with the final version that should be managed

Throws:

ConfigTransactionException

rollback

public void rollback()

Description copied from interface: ConfigTransaction

Cancels the transaction, locking it out from further changes.

Specified by:

rollback in interface ConfigTransaction

created

public void created(Object createdConfigBean,
                    String name,
                    MultiMap<String,String> metadata)

Description copied from interface: ConfigTransaction

Add configuration beans to the transaction.

Specified by:

created in interface ConfigTransaction

Parameters:

createdConfigBean - - the configuration bean instance being created

name - - optionally the name for the configuration

metadata - - name,value(s)

deleted

public void deleted(Collection<?> deletedConfigBeans)

Specified by:

deleted in interface ConfigTransaction

deleted

public void deleted(Object deleted)

Description copied from interface: ConfigTransaction

Marks configuration beans as having been deleted.

Specified by:

deleted in interface ConfigTransaction

updated

public void updated(Collection<?> updatedConfigBeans)

Specified by:

updated in interface ConfigTransaction

updated

public void updated(Object updated,
                    PropertyChangeEvent event)

Description copied from interface: ConfigTransaction

Mark configuration beans as having been updated (note that name and metadata cannot change here).

Specified by:

updated in interface ConfigTransaction

getValue

public <V> V getValue(Object component,
                      Inhabitant<?> onBehalfOf,
                      AnnotatedElement annotated,
                      Type genericType,
                      Class<V> type)
           throws ComponentException

override of InjectionResolverQuery to provide view of changes scoped to this txn context.

Specified by:

getValue in interface InjectionResolverQuery

Throws:

ComponentException