Add support for the new JPA 2 API from July 23 2009 (only the top level package. Subpackages have not been updated. Also partially implement PersistenceUnitUtil

git-svn-id: https://svn.jboss.org/repos/hibernate/core/trunk@17305 1b8cb986-b30d-0410-93ca-fae66ebed9b2

entitymanager/src/main/java/org/hibernate/ejb/AbstractEntityManagerImpl.java

@@ -38,6 +38,7 @@ import javax.persistence.PersistenceContextType;
 import javax.persistence.PersistenceException;
 import javax.persistence.Query;
 import javax.persistence.TransactionRequiredException;
+import javax.persistence.TypedQuery;
 import javax.persistence.criteria.CriteriaQuery;
 import javax.persistence.criteria.QueryBuilder;
 import javax.persistence.metamodel.Metamodel;
@@ -125,7 +126,28 @@ public abstract class AbstractEntityManagerImpl implements HibernateEntityManage
 		}
 	}
 
-	public Query createQuery(CriteriaQuery criteriaQuery) {
+	public <T> TypedQuery<T> createQuery(String qlString, Class<T> resultClass) {
+		throw new UnsupportedOperationException( "Not yet implemented" );
+	}
+
+	public <T> TypedQuery<T> createQuery(CriteriaQuery<T> criteriaQuery) {
+		// TODO-STEVE : here is the interpretation/compilation portion.
+		// 		One option is to build on top of the existing
+		//		org.hibernate.loader.custom.CustomQuery infastructure
+		// 		(which is how native sql queries are implemented e.g.).
+		//		If so, then here we could interpret the criteria into
+		//		a CustomQuery instance which is passed into the
+		//		Query instance returned here.  We would then call into
+		//		the various SessionImplementor methods for execution
+		//		such as #listCustomQuery and #scrollCustomQuery.
+		//
+		// 		The drawback to this (^^) approach is that CustomQuery +
+		//		SessionImplementor combo does not support #executeUpdate
+		//		processing...
+		throw new UnsupportedOperationException( "Not yet implemented!" );
+	}
+
+	public <T> TypedQuery<T> createQuery(CriteriaQuery<T> criteriaQuery, Class<T> resultClass) {
 		// TODO-STEVE : here is the interpretation/compilation portion.
 		// 		One option is to build on top of the existing
 		//		org.hibernate.loader.custom.CustomQuery infastructure
@@ -160,6 +182,11 @@ public abstract class AbstractEntityManagerImpl implements HibernateEntityManage
 		}
 	}
 
+	public <T> TypedQuery<T> createNamedQuery(String name, Class<T> resultClass) {
+		throw new UnsupportedOperationException( "Not yet implemented" );
+	}
+
+
 	public Query createNativeQuery(String sqlString) {
 		//adjustFlushMode();
 		try {

entitymanager/src/main/java/org/hibernate/ejb/CurrentEntityManagerImpl.java

@@ -23,6 +23,7 @@ package org.hibernate.ejb;
 
 import java.util.Map;
 import javax.persistence.PersistenceContextType;
+import javax.persistence.TypedQuery;
 import javax.persistence.spi.PersistenceUnitTransactionType;
 
 import org.hibernate.Session;

entitymanager/src/main/java/org/hibernate/ejb/EntityManagerFactoryImpl.java

@@ -28,15 +28,19 @@ import java.io.Serializable;
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContextType;
 import javax.persistence.Cache;
+import javax.persistence.PersistenceUnitUtil;
 import javax.persistence.metamodel.Metamodel;
 import javax.persistence.criteria.QueryBuilder;
 import javax.persistence.spi.PersistenceUnitTransactionType;
+import javax.persistence.spi.LoadState;
 
 import org.hibernate.SessionFactory;
+import org.hibernate.Hibernate;
 import org.hibernate.mapping.PersistentClass;
 import org.hibernate.cfg.Configuration;
 import org.hibernate.ejb.criteria.QueryBuilderImpl;
 import org.hibernate.ejb.metamodel.MetamodelImpl;
+import org.hibernate.ejb.util.PersistenceUtilHelper;
 
 /**
  * Actual Hiberate implementation of {@link javax.persistence.EntityManagerFactory}.
@@ -52,6 +56,7 @@ public class EntityManagerFactoryImpl implements HibernateEntityManagerFactory {
 	private final Class sessionInterceptorClass;
 	private final QueryBuilderImpl criteriaQueryBuilder;
 	private final Metamodel metamodel;
+	private final HibernatePersistenceUnitUtil util;
 
 	public EntityManagerFactoryImpl(
 			SessionFactory sessionFactory,
@@ -73,6 +78,7 @@ public class EntityManagerFactoryImpl implements HibernateEntityManagerFactory {
 			this.metamodel = null;
 		}
 		this.criteriaQueryBuilder = new QueryBuilderImpl( this );
+		this.util = new HibernatePersistenceUnitUtil( this );
 	}
 
 	public EntityManager createEntityManager() {
@@ -114,6 +120,10 @@ public class EntityManagerFactoryImpl implements HibernateEntityManagerFactory {
 		return new JPACache( sessionFactory );
 	}
 
+	public PersistenceUnitUtil getPersistenceUnitUtil() {
+		return null;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
 	public boolean isOpen() {
 		return ! sessionFactory.isClosed();
 	}
@@ -148,4 +158,35 @@ public class EntityManagerFactoryImpl implements HibernateEntityManagerFactory {
 //			sessionFactory.getCache().evictQueryRegions();
 		}
 	}
+
+	private static class HibernatePersistenceUnitUtil implements PersistenceUnitUtil, Serializable {
+		private final EntityManagerFactoryImpl emf;
+
+		private HibernatePersistenceUnitUtil(EntityManagerFactoryImpl emf) {
+			this.emf = emf;
+		}
+
+		public boolean isLoaded(Object entity, String attributeName) {
+			LoadState state = PersistenceUtilHelper.isLoadedWithoutReference( entity, attributeName );
+			if (state == LoadState.LOADED) {
+				return true;
+			}
+			else if (state == LoadState.NOT_LOADED ) {
+				return false;
+			}
+			else {
+				return PersistenceUtilHelper.isLoadedWithReference( entity, attributeName ) != LoadState.NOT_LOADED;
+			}
+
+
+		}
+
+		public boolean isLoaded(Object entity) {
+			return PersistenceUtilHelper.isLoaded( entity ) != LoadState.NOT_LOADED;
+		}
+
+		public Object getIdentifier(Object entity) {
+			throw new UnsupportedOperationException( "Not yet implemented" );
+		}
+	}
 }

entitymanager/src/main/java/org/hibernate/ejb/HibernatePersistence.java

@@ -36,6 +36,7 @@ import javax.persistence.spi.PersistenceUnitInfo;
 import javax.persistence.spi.LoadState;
 
 import org.hibernate.Hibernate;
+import org.hibernate.ejb.util.PersistenceUtilHelper;
 import org.hibernate.intercept.FieldInterceptionHelper;
 import org.hibernate.intercept.FieldInterceptor;
 import org.hibernate.collection.PersistentCollection;
@@ -170,140 +171,15 @@ public class HibernatePersistence implements javax.persistence.spi.PersistencePr
 	}
 
 	public LoadState isLoadedWithoutReference(Object proxy, String property) {
-		Object entity;
+		return PersistenceUtilHelper.isLoadedWithoutReference( proxy, property );
-		boolean sureFromUs = false;
-		if ( proxy instanceof HibernateProxy ) {
-			LazyInitializer li = ( ( HibernateProxy ) proxy ).getHibernateLazyInitializer();
-			if ( li.isUninitialized() ) {
-				return LoadState.NOT_LOADED;
-			}
-			else {
-				entity = li.getImplementation();
-			}
-			sureFromUs = true;
-		}
-		else {
-			entity = proxy;
-		}
-
-		//we are instrumenting but we can't assume we are the only ones
-		if ( FieldInterceptionHelper.isInstrumented( entity ) ) {
-			FieldInterceptor interceptor = FieldInterceptionHelper.extractFieldInterceptor( entity );
-			final boolean isInitialized = interceptor == null || interceptor.isInitialized( property );
-			LoadState state;
-			if (isInitialized && interceptor != null) {
-				//property is loaded according to bytecode enhancement, but is it loaded as far as association?
-				//it's ours, we can read
-				state = isLoaded( get( entity, property ) );
-				//it's ours so we know it's loaded
-				if (state == LoadState.UNKNOWN) state = LoadState.LOADED;
-			}
-			else if ( interceptor != null && (! isInitialized)) {
-				state = LoadState.NOT_LOADED;
-			}
-			else if ( sureFromUs ) { //interceptor == null
-				//property is loaded according to bytecode enhancement, but is it loaded as far as association?
-				//it's ours, we can read
-				state = isLoaded( get( entity, property ) );
-				//it's ours so we know it's loaded
-				if (state == LoadState.UNKNOWN) state = LoadState.LOADED;
-			}
-			else {
-				state = LoadState.UNKNOWN;
-			}
-
-			return state;
-		}
-		else {
-			//can't do sureFromUs ? LoadState.LOADED : LoadState.UNKNOWN;
-			//is that an association?
-			return LoadState.UNKNOWN;
-		}
 	}
 
 	public LoadState isLoadedWithReference(Object proxy, String property) {
-		//for sure we don't instrument and for sure it's not a lazy proxy
+		return PersistenceUtilHelper.isLoadedWithReference( proxy, property );
-		Object object = get(proxy, property);
-		return isLoaded( object );
-	}
-
-	private Object get(Object proxy, String property) {
-		final Class<?> clazz = proxy.getClass();
-		try {
-			try {
-				final Field field = clazz.getField( property );
-				setAccessibility( field );
-				return field.get( proxy );
-			}
-			catch ( NoSuchFieldException e ) {
-				final Method method = getMethod( clazz, property );
-				if (method != null) {
-					setAccessibility( method );
-					return method.invoke( proxy );
-				}
-				else {
-					throw new PersistenceException( "Unable to find field or method: "
-							+ clazz + "#"
-							+ property);
-				}
-			}
-		}
-		catch ( IllegalAccessException e ) {
-			throw new PersistenceException( "Unable to access field or method: "
-							+ clazz + "#"
-							+ property, e);
-		}
-		catch ( InvocationTargetException e ) {
-			throw new PersistenceException( "Unable to access field or method: "
-							+ clazz + "#"
-							+ property, e);
-		}
-	}
-
-	/**
-	 * Returns the method with the specified name or <code>null</code> if it does not exist.
-	 *
-	 * @param clazz The class to check.
-	 * @param methodName The method name.
-	 *
-	 * @return Returns the method with the specified name or <code>null</code> if it does not exist.
-	 */
-	public static Method getMethod(Class<?> clazz, String methodName) {
-		try {
-			char string[] = methodName.toCharArray();
-			string[0] = Character.toUpperCase( string[0] );
-			methodName = new String( string );
-			try {
-				return clazz.getMethod( "get" + methodName );
-			}
-			catch ( NoSuchMethodException e ) {
-				return clazz.getMethod( "is" + methodName );
-			}
-		}
-		catch ( NoSuchMethodException e ) {
-			return null;
-		}
-	}
-
-	public static void setAccessibility(Member member) {
-		if ( !Modifier.isPublic( member.getModifiers() ) ) {
-			//Sun's ease of use, sigh...
-			( ( AccessibleObject ) member ).setAccessible( true );
-		}
 	}
 
 	public LoadState isLoaded(Object o) {
-		if ( o instanceof HibernateProxy ) {
+		return PersistenceUtilHelper.isLoaded(o);
-			final boolean isInitialized = !( ( HibernateProxy ) o ).getHibernateLazyInitializer().isUninitialized();
-			return isInitialized ? LoadState.LOADED : LoadState.NOT_LOADED;
-		}
-		else if ( o instanceof PersistentCollection ) {
-			final boolean isInitialized = ( ( PersistentCollection ) o ).wasInitialized();
-			return isInitialized ? LoadState.LOADED : LoadState.NOT_LOADED;
-		}
-		else {
-			return LoadState.UNKNOWN;
-		}
 	}
 
 	/**

entitymanager/src/main/java/org/hibernate/ejb/QueryImpl.java

@@ -38,6 +38,7 @@ import javax.persistence.TemporalType;
 import static javax.persistence.TemporalType.*;
 import javax.persistence.TransactionRequiredException;
 import javax.persistence.LockModeType;
+import javax.persistence.Parameter;
 
 import org.hibernate.FlushMode;
 import org.hibernate.HibernateException;
@@ -395,13 +396,48 @@ public class QueryImpl implements Query, HibernateQuery {
 		}
 	}
 
-	public Map<String, Object> getNamedParameters() {
 	//FIXME
+	public Set<Parameter<?>> getParameters() {
 		return null;  //To change body of implemented methods use File | Settings | File Templates.
 	}
 
-	public List getPositionalParameters() {
 	//FIXME
+	public Parameter<?> getParameter(String name) {
+		return null;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
+	//FIXME
+	public Parameter<?> getParameter(int position) {
+		return null;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
+	//FIXME
+	public <T> Parameter<T> getParameter(String name, Class<T> type) {
+		return null;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
+	//FIXME
+	public <T> Parameter<T> getParameter(int position, Class<T> type) {
+		return null;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
+	//FIXME
+	public boolean isBound(Parameter<?> param) {
+		return false;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
+	//FIXME
+	public <T> T getParameterValue(Parameter<T> param) {
+		return null;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
+	//FIXME
+	public Object getParameterValue(String name) {
+		return null;  //To change body of implemented methods use File | Settings | File Templates.
+	}
+
+	//FIXME
+	public Object getParameterValue(int position) {
 		return null;  //To change body of implemented methods use File | Settings | File Templates.
 	}
 

entitymanager/src/main/java/org/hibernate/ejb/util/PersistenceUtilHelper.java

@@ -0,0 +1,159 @@
+package org.hibernate.ejb.util;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Member;
+import java.lang.reflect.Modifier;
+import java.lang.reflect.AccessibleObject;
+import javax.persistence.spi.LoadState;
+import javax.persistence.PersistenceException;
+
+import org.hibernate.proxy.HibernateProxy;
+import org.hibernate.proxy.LazyInitializer;
+import org.hibernate.intercept.FieldInterceptionHelper;
+import org.hibernate.intercept.FieldInterceptor;
+import org.hibernate.collection.PersistentCollection;
+
+/**
+ * @author Emmanuel Bernard
+ */
+public class PersistenceUtilHelper {
+	public static LoadState isLoadedWithoutReference(Object proxy, String property) {
+		Object entity;
+		boolean sureFromUs = false;
+		if ( proxy instanceof HibernateProxy ) {
+			LazyInitializer li = ( ( HibernateProxy ) proxy ).getHibernateLazyInitializer();
+			if ( li.isUninitialized() ) {
+				return LoadState.NOT_LOADED;
+			}
+			else {
+				entity = li.getImplementation();
+			}
+			sureFromUs = true;
+		}
+		else {
+			entity = proxy;
+		}
+
+		//we are instrumenting but we can't assume we are the only ones
+		if ( FieldInterceptionHelper.isInstrumented( entity ) ) {
+			FieldInterceptor interceptor = FieldInterceptionHelper.extractFieldInterceptor( entity );
+			final boolean isInitialized = interceptor == null || interceptor.isInitialized( property );
+			LoadState state;
+			if (isInitialized && interceptor != null) {
+				//property is loaded according to bytecode enhancement, but is it loaded as far as association?
+				//it's ours, we can read
+				state = isLoaded( get( entity, property ) );
+				//it's ours so we know it's loaded
+				if (state == LoadState.UNKNOWN) state = LoadState.LOADED;
+			}
+			else if ( interceptor != null && (! isInitialized)) {
+				state = LoadState.NOT_LOADED;
+			}
+			else if ( sureFromUs ) { //interceptor == null
+				//property is loaded according to bytecode enhancement, but is it loaded as far as association?
+				//it's ours, we can read
+				state = isLoaded( get( entity, property ) );
+				//it's ours so we know it's loaded
+				if (state == LoadState.UNKNOWN) state = LoadState.LOADED;
+			}
+			else {
+				state = LoadState.UNKNOWN;
+			}
+
+			return state;
+		}
+		else {
+			//can't do sureFromUs ? LoadState.LOADED : LoadState.UNKNOWN;
+			//is that an association?
+			return LoadState.UNKNOWN;
+		}
+	}
+
+	public static LoadState isLoadedWithReference(Object proxy, String property) {
+		//for sure we don't instrument and for sure it's not a lazy proxy
+		Object object = get(proxy, property);
+		return isLoaded( object );
+	}
+
+	private static Object get(Object proxy, String property) {
+		final Class<?> clazz = proxy.getClass();
+		try {
+			try {
+				final Field field = clazz.getField( property );
+				setAccessibility( field );
+				return field.get( proxy );
+			}
+			catch ( NoSuchFieldException e ) {
+				final Method method = getMethod( clazz, property );
+				if (method != null) {
+					setAccessibility( method );
+					return method.invoke( proxy );
+				}
+				else {
+					throw new PersistenceException( "Unable to find field or method: "
+							+ clazz + "#"
+							+ property);
+				}
+			}
+		}
+		catch ( IllegalAccessException e ) {
+			throw new PersistenceException( "Unable to access field or method: "
+							+ clazz + "#"
+							+ property, e);
+		}
+		catch ( InvocationTargetException e ) {
+			throw new PersistenceException( "Unable to access field or method: "
+							+ clazz + "#"
+							+ property, e);
+		}
+	}
+
+	/**
+	 * Returns the method with the specified name or <code>null</code> if it does not exist.
+	 *
+	 * @param clazz The class to check.
+	 * @param methodName The method name.
+	 *
+	 * @return Returns the method with the specified name or <code>null</code> if it does not exist.
+	 */
+	private static Method getMethod(Class<?> clazz, String methodName) {
+		try {
+			char string[] = methodName.toCharArray();
+			string[0] = Character.toUpperCase( string[0] );
+			methodName = new String( string );
+			try {
+				return clazz.getMethod( "get" + methodName );
+			}
+			catch ( NoSuchMethodException e ) {
+				return clazz.getMethod( "is" + methodName );
+			}
+		}
+		catch ( NoSuchMethodException e ) {
+			return null;
+		}
+	}
+
+	private static void setAccessibility(Member member) {
+		if ( !Modifier.isPublic( member.getModifiers() ) ) {
+			//Sun's ease of use, sigh...
+			( ( AccessibleObject ) member ).setAccessible( true );
+		}
+	}
+
+	public static LoadState isLoaded(Object o) {
+		if ( o instanceof HibernateProxy ) {
+			final boolean isInitialized = !( ( HibernateProxy ) o ).getHibernateLazyInitializer().isUninitialized();
+			return isInitialized ? LoadState.LOADED : LoadState.NOT_LOADED;
+		}
+		else if ( o instanceof PersistentCollection ) {
+			final boolean isInitialized = ( ( PersistentCollection ) o ).wasInitialized();
+			return isInitialized ? LoadState.LOADED : LoadState.NOT_LOADED;
+		}
+		else {
+			return LoadState.UNKNOWN;
+		}
+	}
+
+}