org.kuali.rice.krad.dao.impl
Class PersistenceDaoJpa

java.lang.Object
  org.kuali.rice.krad.dao.impl.PersistenceDaoJpa

All Implemented Interfaces:

PersistenceDao

public class PersistenceDaoJpa
extends Object
implements PersistenceDao

Constructor Summary

PersistenceDaoJpa()

Method Summary

protected Object	buildForeignKeyObject(Object o, EntityDescriptor localEntityDescriptor, ObjectDescriptor objectDescriptor) Builds a foreign key object for the relationship given by the foreignKeyClass and the objectDescriptor
protected Map<String,JoinColumnDescriptor>	buildJoinColumnDescriptorMap(List<JoinColumnDescriptor> joinColumnDescriptors) Turns a List of JoinColumnDescriptors and maps them by their name
protected Object	buildSingleKeyForeignKeyObject(Object o, String singleForeignKeyFieldName) Builds a foreign key, where that foreign key has a single field
void	clearCache()
javax.persistence.EntityManager	getEntityManager()
protected String	getForeignKeyPropertyForKey(String foreignKey, EntityDescriptor localEntityDescriptor, EntityDescriptor foreignEntityDescriptor, Map<String,JoinColumnDescriptor> joinColumnDescriptors) Finds the correct foreign key property which corresponds to the given key
protected String	getForeignKeyPropertyForKeyWithPossibleInverse(String foreignKey, EntityDescriptor localEntityDescriptor, EntityDescriptor foreignEntityDescriptor, CollectionDescriptor collectionDescriptor) Finds the correct foreign key property which corresponds to the given key
boolean	isProxied(Object object) True if object is an instance of HibernateProxy, false otherwise
protected boolean	isReferenceCollection(Object o, String referenceName) Determines if the reference on the given object represents a collection or not
Object	resolveProxy(Object o)
void	retrieveAllReferences(Object o)
protected Collection	retrieveCollectionReference(Object o, String referenceName) This method fetches a collection to refresh a reference
protected Object	retrieveObjectReference(Object o, String referenceName) Fetches an object reference
void	retrieveReference(Object o, String referenceName)
void	setEntityManager(javax.persistence.EntityManager entityManager)

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistenceDaoJpa

public PersistenceDaoJpa()

Method Detail

clearCache

public void clearCache()

Specified by:

clearCache in interface PersistenceDao

See Also:

PersistenceDao.clearCache()

resolveProxy

public Object resolveProxy(Object o)

Specified by:

resolveProxy in interface PersistenceDao

See Also:

PersistenceDao.resolveProxy(java.lang.Object)

retrieveAllReferences

public void retrieveAllReferences(Object o)

Specified by:

retrieveAllReferences in interface PersistenceDao

See Also:

PersistenceDao.retrieveAllReferences(java.lang.Object)

retrieveReference

public void retrieveReference(Object o,
                              String referenceName)

Specified by:

retrieveReference in interface PersistenceDao

See Also:

PersistenceDao.retrieveReference(java.lang.Object, java.lang.String)

isReferenceCollection

protected boolean isReferenceCollection(Object o,
                                        String referenceName)

Determines if the reference on the given object represents a collection or not

Parameters:

o - the object which is to be refreshed

referenceName - the name of the reference to refresh

Returns:

true if the reference is a collection, false otherwise

retrieveCollectionReference

protected Collection retrieveCollectionReference(Object o,
                                                 String referenceName)
                                          throws NoSuchFieldException,
                                                 IllegalArgumentException,
                                                 IllegalAccessException

This method fetches a collection to refresh a reference

Parameters:

o - the object to refresh

referenceName - the name of the reference to refresh

Returns:

the retrieved object to refresh the

Throws:

NoSuchFieldException

IllegalAccessException

IllegalArgumentException

getForeignKeyPropertyForKeyWithPossibleInverse

protected String getForeignKeyPropertyForKeyWithPossibleInverse(String foreignKey,
                                                                EntityDescriptor localEntityDescriptor,
                                                                EntityDescriptor foreignEntityDescriptor,
                                                                CollectionDescriptor collectionDescriptor)

Finds the correct foreign key property which corresponds to the given key

Parameters:

foreignKey - the name of the key we want to find the proper foreign name for

localEntityDescriptor - the descriptor of the entity that key is on

foreignEntityDescriptor - the descriptor of the entity we're trying to retrieve

joinColumnDescriptors - a Map of the JoinColumnDescriptors that describe the relationship from the local entity's point of view, keyed by the column name of the JoinColumnDescriptor

Returns:

the name of the property on the related object

retrieveObjectReference

protected Object retrieveObjectReference(Object o,
                                         String referenceName)
                                  throws IllegalArgumentException,
                                         IllegalAccessException,
                                         NoSuchFieldException,
                                         InstantiationException,
                                         ClassNotFoundException

Fetches an object reference

Parameters:

o - the object to refresh

referenceName - the name of the reference to fetch

Returns:

the fetched referred to object

Throws:

IllegalAccessException

IllegalArgumentException

NoSuchFieldException

ClassNotFoundException

InstantiationException

buildForeignKeyObject

protected Object buildForeignKeyObject(Object o,
                                       EntityDescriptor localEntityDescriptor,
                                       ObjectDescriptor objectDescriptor)
                                throws IllegalArgumentException,
                                       NoSuchFieldException,
                                       IllegalAccessException,
                                       InstantiationException

Builds a foreign key object for the relationship given by the foreignKeyClass and the objectDescriptor

Parameters:

o - the object to refresh

localEntityDescriptor - the entity descriptor for that object

objectDescriptor - the object descriptor for the relationship to refresh

Returns:

the foreign key to fetch that object

Throws:

IllegalArgumentException

NoSuchFieldException

IllegalAccessException

InstantiationException

getForeignKeyPropertyForKey

protected String getForeignKeyPropertyForKey(String foreignKey,
                                             EntityDescriptor localEntityDescriptor,
                                             EntityDescriptor foreignEntityDescriptor,
                                             Map<String,JoinColumnDescriptor> joinColumnDescriptors)

Finds the correct foreign key property which corresponds to the given key

Parameters:

foreignKey - the name of the key we want to find the proper foreign name for

localEntityDescriptor - the descriptor of the entity that key is on

foreignEntityDescriptor - the descriptor of the entity we're trying to retrieve

joinColumnDescriptors - a Map of the JoinColumnDescriptors that describe the relationship from the local entity's point of view, keyed by the column name of the JoinColumnDescriptor

Returns:

the name of the property on the related object

buildJoinColumnDescriptorMap

protected Map<String,JoinColumnDescriptor> buildJoinColumnDescriptorMap(List<JoinColumnDescriptor> joinColumnDescriptors)

Turns a List of JoinColumnDescriptors and maps them by their name

Parameters:

joinColumnDescriptors - a List of JoinColumnDescriptors

Returns:

a Map the List as a Map, keyed by the name of the JoinColumn

buildSingleKeyForeignKeyObject

protected Object buildSingleKeyForeignKeyObject(Object o,
                                                String singleForeignKeyFieldName)
                                         throws NoSuchFieldException,
                                                IllegalArgumentException,
                                                IllegalAccessException

Builds a foreign key, where that foreign key has a single field

Parameters:

o - the object to get the foreign key value from

singleForeignKeyFieldName - the name of the foreign key field

Returns:

a value for the foreign key

Throws:

NoSuchFieldException

IllegalArgumentException

IllegalAccessException

isProxied

public boolean isProxied(Object object)

True if object is an instance of HibernateProxy, false otherwise

Specified by:

isProxied in interface PersistenceDao

Parameters:

object - the object to determine if it is a proxy

Returns:

true if the object is an ORM proxy; false otherwise

See Also:

PersistenceDao.isProxied(java.lang.Object)

getEntityManager

public javax.persistence.EntityManager getEntityManager()

Returns:

the entityManager

setEntityManager

public void setEntityManager(javax.persistence.EntityManager entityManager)

Parameters:

entityManager - the entityManager to set