ch.elca.el4j.services.persistence.generic.dao.impl
Class DefaultDaoRegistry

java.lang.Object
  ch.elca.el4j.services.persistence.generic.dao.impl.DefaultDaoRegistry

All Implemented Interfaces:

ModuleApplicationListener, DaoRegistry, EventListener, ApplicationContextAware

Direct Known Subclasses:

FallbackDaoRegistry

public class DefaultDaoRegistry
extends Object
implements DaoRegistry, ApplicationContextAware, ModuleApplicationListener

A DaoRegistry where DAOs can be registered either explicitly (via its map configuration) or implicitly (by collecting all beans that have the GenericDao interface).
This can be used together with

• context:component-scan configuration setting and the

  Author:

  Adrian Moos (AMS), Alex Mathey (AMA), Jonas Hauenstein (JHN)

  File-location:

  DefaultDaoRegistry

  Last check-in date:

  2010-01-06 10:07:00 +0100 (Mi, 06. Jan 2010) by jonasha for revision 4071

  Field Summary

  protected ApplicationContext	m_applicationContext The application context.
  protected boolean	m_applicationContextIsReady Is Spring context completely initialized?
  protected Map<Class<?>,GenericDao<?>>	m_beanClassDaos The map containing the registered DAOs with the bean class as key.
  protected boolean	m_collectDaos Whether to collect DAOs automatically.
  protected long	m_creatorThreadId The thread ID of the thread that set the application context (in general the thread that created this object).
  protected Map<Class<?>,GenericDao<?>>	m_daoClassDaos The map containing the registered DAOs with the dao class as key.
  protected String	m_daoNamePattern The dao matching pattern.
  protected boolean	m_initialized Was initDaosFromSpringBeans already called?

  Constructor Summary

  DefaultDaoRegistry()
  

  Method Summary

  <T> T	getDao(Class<T> doaType) Returns the DAO of a given type.
  Map<Class<?>,? extends GenericDao<?>>	getDaos()
  <T> GenericDao<T>	getFor(Class<T> entityType) Returns the generic DAO for entities of type entityType.
  protected void	initDao(GenericDao<?> dao) This method can be overridden by child classes to initialize all DAOs even further.
  protected void	initDaosFromSpringBeans() Load all GenericDaos from this spring bean's bean factory.
  boolean	isCollectDaos() See setCollectDaos.
  void	onContextRefreshed() Executed when ModuleApplicationContext is completely refreshed.
  void	setApplicationContext(ApplicationContext applicationContext)
  void	setCollectDaos(boolean collectDaos) By default we automatically collect here all generic DAOs from the spring application context (all DAOs that implement the GenericDao interface).
  void	setDaos(Map<Class<?>,GenericDao<?>> daos)
  void	setNamePattern(String namePattern) Set a new DAO name pattern.
  void	waitUntilApplicationContextIsReady() Check if Spring context is completely initialized and wait if we are in multi-threaded environment.

  Methods inherited from class java.lang.Object

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

  Field Detail

  m_collectDaos

  protected boolean m_collectDaos

  Whether to collect DAOs automatically.

  m_beanClassDaos

  protected Map<Class<?>,GenericDao<?>> m_beanClassDaos

  The map containing the registered DAOs with the bean class as key.

  m_daoClassDaos

  protected Map<Class<?>,GenericDao<?>> m_daoClassDaos

  The map containing the registered DAOs with the dao class as key.

  m_applicationContext

  protected ApplicationContext m_applicationContext

  The application context.

  m_daoNamePattern

  protected String m_daoNamePattern

  The dao matching pattern. All GenericDaos whose names match this pattern are collected.

  m_initialized

  protected boolean m_initialized

  Was initDaosFromSpringBeans already called?

  m_creatorThreadId

  protected long m_creatorThreadId

  The thread ID of the thread that set the application context (in general the thread that created this object).

  m_applicationContextIsReady

  protected volatile boolean m_applicationContextIsReady

  Is Spring context completely initialized?

  Constructor Detail

  DefaultDaoRegistry

  public DefaultDaoRegistry()

  Method Detail

  onContextRefreshed

  public void onContextRefreshed()

  Executed when ModuleApplicationContext is completely refreshed.

  Specified by:

  onContextRefreshed in interface ModuleApplicationListener

  waitUntilApplicationContextIsReady

  public void waitUntilApplicationContextIsReady()

  Check if Spring context is completely initialized and wait if we are in multi-threaded environment.

  getFor

  public <T> GenericDao<T> getFor(Class<T> entityType)

  Returns the generic DAO for entities of type entityType.

  Specified by:

  getFor in interface DaoRegistry

  Type Parameters:

  T - The domain class type.

  Parameters:

  entityType - The domain class for which a generic DAO should be returned. The class does some basic handling to tolerate (i.e. unwrap) Spring proxies.

  Returns:

  A fully generic or partially specific DAO for the given type, or null if none was found.

  getDao

  public <T> T getDao(Class<T> doaType)

  Returns the DAO of a given type. If no DAO of the given type is registered, null will be returned.

  Specified by:

  getDao in interface DaoRegistry

  Type Parameters:

  T - The DOA class type.

  Parameters:

  doaType - The DAO class type for which the DAO should be returned.

  Returns:

  The DAO for the given type or null.

  setNamePattern

  public void setNamePattern(String namePattern)

  Set a new DAO name pattern. Only DAOs whose bean names match this pattern are collected. Allowed wildcards are '*' which match any characters, the default is "*" which matches all DAOs.

  Parameters:

  namePattern - The name pattern to set.

  initDaosFromSpringBeans

  protected void initDaosFromSpringBeans()

  Load all GenericDaos from this spring bean's bean factory.

  initDao

  protected void initDao(GenericDao<?> dao)

  This method can be overridden by child classes to initialize all DAOs even further.

  Parameters:

  dao - The dao to initialize.

  getDaos

  public Map<Class<?>,? extends GenericDao<?>> getDaos()

  Specified by:

  getDaos in interface DaoRegistry

  Returns:

  Returns the registered DAOs.

  setDaos

  public void setDaos(Map<Class<?>,GenericDao<?>> daos)

  Parameters:

  daos - Registers the DAOs.

  setApplicationContext

  public void setApplicationContext(ApplicationContext applicationContext)
                             throws BeansException

  Specified by:

  setApplicationContext in interface ApplicationContextAware

  Throws:

  BeansException

  isCollectDaos

  public boolean isCollectDaos()

  See setCollectDaos.

  Returns:

  Whether to collect DAOs automatically.

  setCollectDaos

  public void setCollectDaos(boolean collectDaos)

  By default we automatically collect here all generic DAOs from the spring application context (all DAOs that implement the GenericDao interface). This setter method allows to change this default.

  Parameters:

  collectDaos - The new value for collecting daos.