[hibernate-commits] Hibernate SVN: r19604 - in core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb: util and 1 other directory.

Author: epbernard Date: 2010-05-25 09:31:50 -0400 (Tue, 25 May 2010) New Revision: 19604 Modified: core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/EntityManagerFactoryImpl.java core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/HibernatePersistence.java core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/util/PersistenceUtilHelper.java Log: HHH-5258 isLoaded and superclasses and private properties now works Use getDeclaredField and getDeclaredMethod, use the whole class hierarchy and use a cache to speed up both class hierarchy and property to Member computation Modified: core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/EntityManagerFactoryImpl.java =================================================================== --- core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/EntityManagerFactoryImpl.java 2010-05-25 13:31:08 UTC (rev 19603) +++ core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/EntityManagerFactoryImpl.java 2010-05-25 13:31:50 UTC (rev 19604) @@ -65,6 +65,7 @@ private final Metamodel metamodel; private final HibernatePersistenceUnitUtil util; private final Map<String,Object> properties; + private final PersistenceUtilHelper.MetadataCache cache = new PersistenceUtilHelper.MetadataCache(); @SuppressWarnings( "unchecked" ) public EntityManagerFactoryImpl( @@ -182,13 +183,15 @@ private static class HibernatePersistenceUnitUtil implements PersistenceUnitUtil, Serializable { private final HibernateEntityManagerFactory emf; + private transient PersistenceUtilHelper.MetadataCache cache; private HibernatePersistenceUnitUtil(EntityManagerFactoryImpl emf) { this.emf = emf; + this.cache = emf.cache; } public boolean isLoaded(Object entity, String attributeName) { - LoadState state = PersistenceUtilHelper.isLoadedWithoutReference( entity, attributeName ); + LoadState state = PersistenceUtilHelper.isLoadedWithoutReference( entity, attributeName, cache ); if (state == LoadState.LOADED) { return true; } @@ -196,7 +199,7 @@ return false; } else { - return PersistenceUtilHelper.isLoadedWithReference( entity, attributeName ) != LoadState.NOT_LOADED; + return PersistenceUtilHelper.isLoadedWithReference( entity, attributeName, cache ) != LoadState.NOT_LOADED; } } Modified: core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/HibernatePersistence.java =================================================================== --- core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/HibernatePersistence.java 2010-05-25 13:31:08 UTC (rev 19603) +++ core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/HibernatePersistence.java 2010-05-25 13:31:50 UTC (rev 19604) @@ -38,6 +38,7 @@ * @author Gavin King */ public class HibernatePersistence extends AvailableSettings implements PersistenceProvider { + private final PersistenceUtilHelper.MetadataCache cache = new PersistenceUtilHelper.MetadataCache(); /** * Get an entity manager factory by its entity manager name, using the specified @@ -85,11 +86,11 @@ private final ProviderUtil providerUtil = new ProviderUtil() { public LoadState isLoadedWithoutReference(Object proxy, String property) { - return PersistenceUtilHelper.isLoadedWithoutReference( proxy, property ); + return PersistenceUtilHelper.isLoadedWithoutReference( proxy, property, cache ); } public LoadState isLoadedWithReference(Object proxy, String property) { - return PersistenceUtilHelper.isLoadedWithReference( proxy, property ); + return PersistenceUtilHelper.isLoadedWithReference( proxy, property, cache ); } public LoadState isLoaded(Object o) { Modified: core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/util/PersistenceUtilHelper.java =================================================================== --- core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/util/PersistenceUtilHelper.java 2010-05-25 13:31:08 UTC (rev 19603) +++ core/branches/Branch_3_5/entitymanager/src/main/java/org/hibernate/ejb/util/PersistenceUtilHelper.java 2010-05-25 13:31:50 UTC (rev 19604) @@ -1,14 +1,21 @@ package org.hibernate.ejb.util; +import java.io.Serializable; 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 java.util.ArrayList; +import java.util.HashMap; +import java.util.List; +import java.util.Map; +import java.util.WeakHashMap; import javax.persistence.spi.LoadState; import javax.persistence.PersistenceException; +import org.hibernate.AssertionFailure; import org.hibernate.proxy.HibernateProxy; import org.hibernate.proxy.LazyInitializer; import org.hibernate.intercept.FieldInterceptionHelper; @@ -19,7 +26,7 @@ * @author Emmanuel Bernard */ public class PersistenceUtilHelper { - public static LoadState isLoadedWithoutReference(Object proxy, String property) { + public static LoadState isLoadedWithoutReference(Object proxy, String property, MetadataCache cache) { Object entity; boolean sureFromUs = false; if ( proxy instanceof HibernateProxy ) { @@ -44,7 +51,7 @@ 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 ) ); + state = isLoaded( get( entity, property, cache ) ); //it's ours so we know it's loaded if (state == LoadState.UNKNOWN) state = LoadState.LOADED; } @@ -54,7 +61,7 @@ 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 ) ); + state = isLoaded( get( entity, property, cache ) ); //it's ours so we know it's loaded if (state == LoadState.UNKNOWN) state = LoadState.LOADED; } @@ -71,32 +78,26 @@ } } - public static LoadState isLoadedWithReference(Object proxy, String property) { + public static LoadState isLoadedWithReference(Object proxy, String property, MetadataCache cache) { //for sure we don't instrument and for sure it's not a lazy proxy - Object object = get(proxy, property); + Object object = get(proxy, property, cache); return isLoaded( object ); } - private static Object get(Object proxy, String property) { + private static Object get(Object proxy, String property, MetadataCache cache) { final Class<?> clazz = proxy.getClass(); + try { - try { - final Field field = clazz.getField( property ); - setAccessibility( field ); - return field.get( proxy ); + Member member = cache.getMember( clazz, property ); + if (member instanceof Field) { + return ( (Field) member ).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); - } + else if (member instanceof Method) { + return ( (Method) member ).invoke( proxy ); } + else { + throw new AssertionFailure( "Member object neither Field nor Method: " + member); + } } catch ( IllegalAccessException e ) { throw new PersistenceException( "Unable to access field or method: " @@ -110,6 +111,27 @@ } } + 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; + } + } + /** * Returns the method with the specified name or <code>null</code> if it does not exist. * @@ -135,25 +157,84 @@ } } - private static void setAccessibility(Member member) { - if ( !Modifier.isPublic( member.getModifiers() ) ) { - //Sun's ease of use, sigh... - ( ( AccessibleObject ) member ).setAccessible( true ); + /** + * Cache hierarchy and member resolution in a weak hash map + */ + //TODO not really thread-safe + public static class MetadataCache implements Serializable { + private transient Map<Class<?>, ClassCache> classCache = new WeakHashMap<Class<?>, ClassCache>(); + + + private void readObject(java.io.ObjectInputStream stream) { + classCache = new WeakHashMap<Class<?>, ClassCache>(); } - } - public static LoadState isLoaded(Object o) { - if ( o instanceof HibernateProxy ) { - final boolean isInitialized = !( ( HibernateProxy ) o ).getHibernateLazyInitializer().isUninitialized(); - return isInitialized ? LoadState.LOADED : LoadState.NOT_LOADED; + Member getMember(Class<?> clazz, String property) { + ClassCache cache = classCache.get( clazz ); + if (cache == null) { + cache = new ClassCache(clazz); + classCache.put( clazz, cache ); + } + Member member = cache.members.get( property ); + if ( member == null ) { + member = findMember( clazz, property ); + cache.members.put( property, member ); + } + return member; } - else if ( o instanceof PersistentCollection ) { - final boolean isInitialized = ( ( PersistentCollection ) o ).wasInitialized(); - return isInitialized ? LoadState.LOADED : LoadState.NOT_LOADED; + + private Member findMember(Class<?> clazz, String property) { + final List<Class<?>> classes = getClassHierarchy( clazz ); + + for (Class current : classes) { + final Field field; + try { + field = current.getDeclaredField( property ); + setAccessibility( field ); + return field; + } + catch ( NoSuchFieldException e ) { + final Method method = getMethod( clazz, property ); + if (method != null) { + setAccessibility( method ); + return method; + } + } + } + //we could not find any match + throw new PersistenceException( "Unable to find field or method: " + + clazz + "#" + + property); } - else { - return LoadState.UNKNOWN; + + private List<Class<?>> getClassHierarchy(Class<?> clazz) { + ClassCache cache = classCache.get( clazz ); + if (cache == null) { + cache = new ClassCache(clazz); + classCache.put( clazz, cache ); + } + return cache.classHierarchy; } + + private static List<Class<?>> findClassHierarchy(Class<?> clazz) { + List<Class<?>> classes = new ArrayList<Class<?>>(); + Class<?> current = clazz; + do { + classes.add( current ); + current = current.getSuperclass(); + } + while ( current != null ); + return classes; + } + + private static class ClassCache { + List<Class<?>> classHierarchy; + Map<String, Member> members = new HashMap<String, Member>(); + + public ClassCache(Class<?> clazz) { + classHierarchy = findClassHierarchy( clazz ); + } + } } }