[hibernate-commits] Hibernate SVN: r15287 - in core/branches/Branch_3_3/core/src/main/java/org/hibernate: tuple and 3 other directories.

Author: steve.ebersole(a)jboss.com Date: 2008-10-08 12:42:46 -0400 (Wed, 08 Oct 2008) New Revision: 15287 Added: core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentTuplizerFactory.java core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizerFactory.java Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Configuration.java core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Settings.java core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/EntityModeToTuplizerMapping.java core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentEntityModeToTuplizerMapping.java core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityEntityModeToTuplizerMapping.java core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizer.java core/branches/Branch_3_3/core/src/main/java/org/hibernate/util/ReflectHelper.java Log: HHH-3517 : default Tuplizer impls Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Configuration.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Configuration.java 2008-10-08 15:54:11 UTC (rev 15286) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Configuration.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -66,6 +66,7 @@ import org.hibernate.MappingNotFoundException; import org.hibernate.SessionFactory; import org.hibernate.SessionFactoryObserver; +import org.hibernate.tuple.entity.EntityTuplizerFactory; import org.hibernate.dialect.Dialect; import org.hibernate.dialect.MySQLDialect; import org.hibernate.dialect.function.SQLFunction; @@ -158,6 +159,10 @@ protected Map sqlFunctions; protected Map namedQueries; protected Map namedSqlQueries; + + private EntityTuplizerFactory entityTuplizerFactory; +// private ComponentTuplizerFactory componentTuplizerFactory; todo : HHH-3517 and HHH-1907 + /** * Map<String, SqlResultSetMapping> result set name, result set description */ @@ -185,6 +190,17 @@ private SessionFactoryObserver sessionFactoryObserver; + private transient Mapping mapping = buildMapping(); + + protected Configuration(SettingsFactory settingsFactory) { + this.settingsFactory = settingsFactory; + reset(); + } + + public Configuration() { + this( new SettingsFactory() ); + } + protected void reset() { classes = new HashMap(); imports = new HashMap(); @@ -209,21 +225,19 @@ columnNameBindingPerTable = new HashMap(); namingStrategy = DefaultNamingStrategy.INSTANCE; sqlFunctions = new HashMap(); - } - private transient Mapping mapping = buildMapping(); - - - - protected Configuration(SettingsFactory settingsFactory) { - this.settingsFactory = settingsFactory; - reset(); + entityTuplizerFactory = new EntityTuplizerFactory(); +// componentTuplizerFactory = new ComponentTuplizerFactory(); } - public Configuration() { - this( new SettingsFactory() ); + public EntityTuplizerFactory getEntityTuplizerFactory() { + return entityTuplizerFactory; } +// public ComponentTuplizerFactory getComponentTuplizerFactory() { +// return componentTuplizerFactory; +// } + /** * Iterate the entity mappings * @@ -2094,13 +2108,20 @@ public Settings buildSettings() throws HibernateException { Properties clone = ( Properties ) properties.clone(); PropertiesHelper.resolvePlaceHolders( clone ); - return settingsFactory.buildSettings( clone ); + return buildSettingsInternal( clone ); } public Settings buildSettings(Properties props) throws HibernateException { - return settingsFactory.buildSettings( props ); + return buildSettingsInternal( props ); } + private Settings buildSettingsInternal(Properties props) { + final Settings settings = settingsFactory.buildSettings( props ); + settings.setEntityTuplizerFactory( this.getEntityTuplizerFactory() ); +// settings.setComponentTuplizerFactory( this.getComponentTuplizerFactory() ); + return settings; + } + public Map getNamedSQLQueries() { return namedSqlQueries; } Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Settings.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Settings.java 2008-10-08 15:54:11 UTC (rev 15286) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/cfg/Settings.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -28,6 +28,7 @@ import org.hibernate.ConnectionReleaseMode; import org.hibernate.EntityMode; +import org.hibernate.tuple.entity.EntityTuplizerFactory; import org.hibernate.cache.QueryCacheFactory; import org.hibernate.cache.RegionFactory; import org.hibernate.connection.ConnectionProvider; @@ -92,6 +93,8 @@ private boolean dataDefinitionInTransactionSupported; private boolean strictJPAQLCompliance; private boolean namedQueryStartupCheckingEnabled; + private EntityTuplizerFactory entityTuplizerFactory; +// private ComponentTuplizerFactory componentTuplizerFactory; todo : HHH-3517 and HHH-1907 // private BytecodeProvider bytecodeProvider; /** @@ -286,9 +289,17 @@ return namedQueryStartupCheckingEnabled; } + public EntityTuplizerFactory getEntityTuplizerFactory() { + return entityTuplizerFactory; + } - // package protected setters ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +// public ComponentTuplizerFactory getComponentTuplizerFactory() { +// return componentTuplizerFactory; +// } + +// package protected setters ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + // void setShowSqlEnabled(boolean b) { // showSql = b; // } @@ -473,7 +484,15 @@ this.namedQueryStartupCheckingEnabled = namedQueryStartupCheckingEnabled; } + void setEntityTuplizerFactory(EntityTuplizerFactory entityTuplizerFactory) { + this.entityTuplizerFactory = entityTuplizerFactory; + } +// void setComponentTuplizerFactory(ComponentTuplizerFactory componentTuplizerFactory) { +// this.componentTuplizerFactory = componentTuplizerFactory; +// } + + // public BytecodeProvider getBytecodeProvider() { // return bytecodeProvider; // } Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/EntityModeToTuplizerMapping.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/EntityModeToTuplizerMapping.java 2008-10-08 15:54:11 UTC (rev 15286) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/EntityModeToTuplizerMapping.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -55,6 +55,15 @@ } /** + * Allow iteration over all defined {@link Tuplizer Tuplizers}. + * + * @return Iterator over defined tuplizers + */ + public Iterator iterateTuplizers() { + return tuplizers.values().iterator(); + } + + /** * Given a supposed instance of an entity/component, guess its entity mode. * * @param object The supposed instance of the entity/component. Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentEntityModeToTuplizerMapping.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentEntityModeToTuplizerMapping.java 2008-10-08 15:54:11 UTC (rev 15286) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentEntityModeToTuplizerMapping.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -29,8 +29,6 @@ import org.hibernate.mapping.Component; import org.hibernate.mapping.PersistentClass; import org.hibernate.EntityMode; -import org.hibernate.HibernateException; -import org.hibernate.util.ReflectHelper; import java.util.Map; import java.util.HashMap; @@ -47,7 +45,8 @@ */ class ComponentEntityModeToTuplizerMapping extends EntityModeToTuplizerMapping implements Serializable { - private static final Class[] COMPONENT_TUP_CTOR_SIG = new Class[] { Component.class }; + // todo : move this to SF per HHH-3517; also see HHH-1907 and ComponentMetamodel + private ComponentTuplizerFactory componentTuplizerFactory = new ComponentTuplizerFactory(); public ComponentEntityModeToTuplizerMapping(Component component) { PersistentClass owner = component.getOwner(); @@ -59,24 +58,24 @@ } // Build the dynamic-map tuplizer... - Tuplizer dynamicMapTuplizer = null; - String tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.MAP ); - if ( tuplizerImpl == null ) { - dynamicMapTuplizer = new DynamicMapComponentTuplizer( component ); + Tuplizer dynamicMapTuplizer; + String tuplizerClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.MAP ); + if ( tuplizerClassName == null ) { + dynamicMapTuplizer = componentTuplizerFactory.constructDefaultTuplizer( EntityMode.MAP, component ); } else { - dynamicMapTuplizer = buildComponentTuplizer( tuplizerImpl, component ); + dynamicMapTuplizer = componentTuplizerFactory.constructTuplizer( tuplizerClassName, component ); } // then the pojo tuplizer, using the dynamic-map tuplizer if no pojo representation is available - tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.POJO ); - Tuplizer pojoTuplizer = null; + tuplizerClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.POJO ); + Tuplizer pojoTuplizer; if ( owner.hasPojoRepresentation() && component.hasPojoRepresentation() ) { - if ( tuplizerImpl == null ) { - pojoTuplizer = new PojoComponentTuplizer( component ); + if ( tuplizerClassName == null ) { + pojoTuplizer = componentTuplizerFactory.constructDefaultTuplizer( EntityMode.POJO, component ); } else { - pojoTuplizer = buildComponentTuplizer( tuplizerImpl, component ); + pojoTuplizer = componentTuplizerFactory.constructTuplizer( tuplizerClassName, component ); } } else { @@ -84,14 +83,14 @@ } // then dom4j tuplizer, if dom4j representation is available - Tuplizer dom4jTuplizer = null; - tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.DOM4J ); + Tuplizer dom4jTuplizer; + tuplizerClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.DOM4J ); if ( owner.hasDom4jRepresentation() ) { - if ( tuplizerImpl == null ) { - dom4jTuplizer = new Dom4jComponentTuplizer( component ); + if ( tuplizerClassName == null ) { + dom4jTuplizer = componentTuplizerFactory.constructDefaultTuplizer( EntityMode.DOM4J, component ); } else { - dom4jTuplizer = buildComponentTuplizer( tuplizerImpl, component ); + dom4jTuplizer = componentTuplizerFactory.constructTuplizer( tuplizerClassName, component ); } } else { @@ -113,21 +112,12 @@ if ( !userSuppliedTuplizerImpls.isEmpty() ) { Iterator itr = userSuppliedTuplizerImpls.entrySet().iterator(); while ( itr.hasNext() ) { - Map.Entry entry = ( Map.Entry ) itr.next(); - EntityMode entityMode = ( EntityMode ) entry.getKey(); - ComponentTuplizer tuplizer = buildComponentTuplizer( ( String ) entry.getValue(), component ); + final Map.Entry entry = ( Map.Entry ) itr.next(); + final EntityMode entityMode = ( EntityMode ) entry.getKey(); + final String userTuplizerClassName = ( String ) entry.getValue(); + ComponentTuplizer tuplizer = componentTuplizerFactory.constructTuplizer( userTuplizerClassName, component ); addTuplizer( entityMode, tuplizer ); } } } - - private ComponentTuplizer buildComponentTuplizer(String tuplizerImpl, Component component) { - try { - Class implClass = ReflectHelper.classForName( tuplizerImpl ); - return ( ComponentTuplizer ) implClass.getConstructor( COMPONENT_TUP_CTOR_SIG ).newInstance( new Object[] { component } ); - } - catch( Throwable t ) { - throw new HibernateException( "Could not build tuplizer [" + tuplizerImpl + "]", t ); - } - } } Added: core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentTuplizerFactory.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentTuplizerFactory.java (rev 0) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/component/ComponentTuplizerFactory.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -0,0 +1,160 @@ +/* + * Hibernate, Relational Persistence for Idiomatic Java + * + * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as + * indicated by the @author tags or express copyright attribution + * statements applied by the authors. All third-party contributions are + * distributed under license by Red Hat Middleware LLC. + * + * This copyrighted material is made available to anyone wishing to use, modify, + * copy, or redistribute it subject to the terms and conditions of the GNU + * Lesser General Public License, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this distribution; if not, write to: + * Free Software Foundation, Inc. + * 51 Franklin Street, Fifth Floor + * Boston, MA 02110-1301 USA + * + */ +package org.hibernate.tuple.component; + +import java.util.Map; +import java.lang.reflect.Constructor; +import java.io.Serializable; + +import org.hibernate.util.FastHashMap; +import org.hibernate.util.ReflectHelper; +import org.hibernate.EntityMode; +import org.hibernate.HibernateException; +import org.hibernate.mapping.Component; + +/** + * A registry allowing users to define the default {@link ComponentTuplizer} class to use per {@link EntityMode}. + * + * @author Steve Ebersole + */ +public class ComponentTuplizerFactory implements Serializable { + + private static final Class[] COMPONENT_TUP_CTOR_SIG = new Class[] { Component.class }; + + private Map defaultImplClassByMode = buildBaseMapping(); + + /** + * Method allowing registration of the tuplizer class to use as default for a particular entity-mode. + * + * @param entityMode The entity-mode for which to register the tuplizer class + * @param tuplizerClass The class to use as the default tuplizer for the given entity-mode. + */ + public void registerDefaultTuplizerClass(EntityMode entityMode, Class tuplizerClass) { + assert isComponentTuplizerImplementor( tuplizerClass ) + : "Specified tuplizer class [" + tuplizerClass.getName() + "] does not implement " + ComponentTuplizer.class.getName(); + assert hasProperConstructor( tuplizerClass ) + : "Specified tuplizer class [" + tuplizerClass.getName() + "] is not properly instantiatable"; + + defaultImplClassByMode.put( entityMode, tuplizerClass ); + } + + /** + * Construct an instance of the given tuplizer class. + * + * @param tuplizerClassName The name of the tuplizer class to instantiate + * @param metadata The metadata for the component. + * + * @return The instantiated tuplizer + * + * @throws HibernateException If class name cannot be resolved to a class reference, or if the + * {@link Constructor#newInstance} call fails. + */ + public ComponentTuplizer constructTuplizer(String tuplizerClassName, Component metadata) { + try { + Class tuplizerClass = ReflectHelper.classForName( tuplizerClassName ); + return constructTuplizer( tuplizerClass, metadata ); + } + catch ( ClassNotFoundException e ) { + throw new HibernateException( "Could not locate specified tuplizer class [" + tuplizerClassName + "]" ); + } + } + + /** + * Construct an instance of the given tuplizer class. + * + * @param tuplizerClass The tuplizer class to instantiate + * @param metadata The metadata for the component. + * + * @return The instantiated tuplizer + * + * @throws HibernateException if the {@link java.lang.reflect.Constructor#newInstance} call fails. + */ + public ComponentTuplizer constructTuplizer(Class tuplizerClass, Component metadata) { + Constructor ctor = getProperConstructor( tuplizerClass ); + assert ctor != null : "Unable to locate proper constructor for tuplizer [" + tuplizerClass.getName() + "]"; + try { + return ( ComponentTuplizer ) ctor.newInstance( new Object[] { metadata } ); + } + catch ( Throwable t ) { + throw new HibernateException( "Unable to instantiate default tuplizer [" + tuplizerClass.getName() + "]", t ); + } + } + + /** + * Construct am instance of the default tuplizer for the given entity-mode. + * + * @param entityMode The entity mode for which to build a default tuplizer. + * @param metadata The metadata for the component. + * + * @return The instantiated tuplizer + * + * @throws HibernateException If no default tuplizer found for that entity-mode; may be re-thrown from + * {@link #constructTuplizer} too. + */ + public ComponentTuplizer constructDefaultTuplizer(EntityMode entityMode, Component metadata) { + Class tuplizerClass = ( Class ) defaultImplClassByMode.get( entityMode ); + if ( tuplizerClass == null ) { + throw new HibernateException( "could not determine default tuplizer class to use [" + entityMode + "]" ); + } + + return constructTuplizer( tuplizerClass, metadata ); + } + + private boolean isComponentTuplizerImplementor(Class tuplizerClass) { + return ReflectHelper.implementsInterface( tuplizerClass, ComponentTuplizer.class ); + } + + private boolean hasProperConstructor(Class tuplizerClass) { + return getProperConstructor( tuplizerClass ) != null; + } + + private Constructor getProperConstructor(Class clazz) { + Constructor ctor = null; + try { + ctor = clazz.getDeclaredConstructor( COMPONENT_TUP_CTOR_SIG ); + if ( ! ReflectHelper.isPublic( ctor ) ) { + try { + // found a ctor, but it was not publicly accessible so try to request accessibility + ctor.setAccessible( true ); + } + catch ( SecurityException e ) { + ctor = null; + } + } + } + catch ( NoSuchMethodException ignore ) { + } + + return ctor; + } + + private static Map buildBaseMapping() { + Map map = new FastHashMap(); + map.put( EntityMode.POJO, PojoComponentTuplizer.class ); + map.put( EntityMode.DOM4J, Dom4jComponentTuplizer.class ); + map.put( EntityMode.MAP, DynamicMapComponentTuplizer.class ); + return map; + } +} Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityEntityModeToTuplizerMapping.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityEntityModeToTuplizerMapping.java 2008-10-08 15:54:11 UTC (rev 15286) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityEntityModeToTuplizerMapping.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -28,8 +28,6 @@ import org.hibernate.tuple.Tuplizer; import org.hibernate.mapping.PersistentClass; import org.hibernate.EntityMode; -import org.hibernate.HibernateException; -import org.hibernate.util.ReflectHelper; import java.util.Iterator; import java.util.Map; @@ -46,8 +44,6 @@ */ public class EntityEntityModeToTuplizerMapping extends EntityModeToTuplizerMapping implements Serializable { - private static final Class[] ENTITY_TUP_CTOR_SIG = new Class[] { EntityMetamodel.class, PersistentClass.class }; - /** * Instantiates a EntityEntityModeToTuplizerMapping based on the given * entity mapping and metamodel definitions. @@ -56,6 +52,10 @@ * @param em The entity metamodel definition. */ public EntityEntityModeToTuplizerMapping(PersistentClass mappedEntity, EntityMetamodel em) { + final EntityTuplizerFactory entityTuplizerFactory = em.getSessionFactory() + .getSettings() + .getEntityTuplizerFactory(); + // create our own copy of the user-supplied tuplizer impl map Map userSuppliedTuplizerImpls = new HashMap(); if ( mappedEntity.getTuplizerMap() != null ) { @@ -63,24 +63,24 @@ } // Build the dynamic-map tuplizer... - Tuplizer dynamicMapTuplizer = null; - String tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.MAP ); - if ( tuplizerImpl == null ) { - dynamicMapTuplizer = new DynamicMapEntityTuplizer( em, mappedEntity ); + Tuplizer dynamicMapTuplizer; + String tuplizerImplClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.MAP ); + if ( tuplizerImplClassName == null ) { + dynamicMapTuplizer = entityTuplizerFactory.constructDefaultTuplizer( EntityMode.MAP, em, mappedEntity ); } else { - dynamicMapTuplizer = buildEntityTuplizer( tuplizerImpl, mappedEntity, em ); + dynamicMapTuplizer = entityTuplizerFactory.constructTuplizer( tuplizerImplClassName, em, mappedEntity ); } // then the pojo tuplizer, using the dynamic-map tuplizer if no pojo representation is available - Tuplizer pojoTuplizer = null; - tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.POJO ); + Tuplizer pojoTuplizer; + tuplizerImplClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.POJO ); if ( mappedEntity.hasPojoRepresentation() ) { - if ( tuplizerImpl == null ) { - pojoTuplizer = new PojoEntityTuplizer( em, mappedEntity ); + if ( tuplizerImplClassName == null ) { + pojoTuplizer = entityTuplizerFactory.constructDefaultTuplizer( EntityMode.POJO, em, mappedEntity ); } else { - pojoTuplizer = buildEntityTuplizer( tuplizerImpl, mappedEntity, em ); + pojoTuplizer = entityTuplizerFactory.constructTuplizer( tuplizerImplClassName, em, mappedEntity ); } } else { @@ -88,14 +88,14 @@ } // then dom4j tuplizer, if dom4j representation is available - Tuplizer dom4jTuplizer = null; - tuplizerImpl = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.DOM4J ); + Tuplizer dom4jTuplizer; + tuplizerImplClassName = ( String ) userSuppliedTuplizerImpls.remove( EntityMode.DOM4J ); if ( mappedEntity.hasDom4jRepresentation() ) { - if ( tuplizerImpl == null ) { - dom4jTuplizer = new Dom4jEntityTuplizer( em, mappedEntity ); + if ( tuplizerImplClassName == null ) { + dom4jTuplizer = entityTuplizerFactory.constructDefaultTuplizer( EntityMode.DOM4J, em, mappedEntity ); } else { - dom4jTuplizer = buildEntityTuplizer( tuplizerImpl, mappedEntity, em ); + dom4jTuplizer = entityTuplizerFactory.constructTuplizer( tuplizerImplClassName, em, mappedEntity ); } } else { @@ -117,21 +117,12 @@ if ( !userSuppliedTuplizerImpls.isEmpty() ) { Iterator itr = userSuppliedTuplizerImpls.entrySet().iterator(); while ( itr.hasNext() ) { - Map.Entry entry = ( Map.Entry ) itr.next(); - EntityMode entityMode = ( EntityMode ) entry.getKey(); - EntityTuplizer tuplizer = buildEntityTuplizer( ( String ) entry.getValue(), mappedEntity, em ); + final Map.Entry entry = ( Map.Entry ) itr.next(); + final EntityMode entityMode = ( EntityMode ) entry.getKey(); + final String tuplizerClassName = ( String ) entry.getValue(); + final EntityTuplizer tuplizer = entityTuplizerFactory.constructTuplizer( tuplizerClassName, em, mappedEntity ); addTuplizer( entityMode, tuplizer ); } } } - - private static EntityTuplizer buildEntityTuplizer(String className, PersistentClass pc, EntityMetamodel em) { - try { - Class implClass = ReflectHelper.classForName( className ); - return ( EntityTuplizer ) implClass.getConstructor( ENTITY_TUP_CTOR_SIG ).newInstance( new Object[] { em, pc } ); - } - catch( Throwable t ) { - throw new HibernateException( "Could not build tuplizer [" + className + "]", t ); - } - } } Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizer.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizer.java 2008-10-08 15:54:11 UTC (rev 15286) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizer.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -238,4 +238,4 @@ * @throws HibernateException If we are unable to determine an entity-name within the inheritence hierarchy. */ public String determineConcreteSubclassEntityName(Object entityInstance, SessionFactoryImplementor factory); -} +} \ No newline at end of file Added: core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizerFactory.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizerFactory.java (rev 0) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/tuple/entity/EntityTuplizerFactory.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -0,0 +1,173 @@ +/* + * Hibernate, Relational Persistence for Idiomatic Java + * + * Copyright (c) 2008, Red Hat Middleware LLC or third-party contributors as + * indicated by the @author tags or express copyright attribution + * statements applied by the authors. All third-party contributions are + * distributed under license by Red Hat Middleware LLC. + * + * This copyrighted material is made available to anyone wishing to use, modify, + * copy, or redistribute it subject to the terms and conditions of the GNU + * Lesser General Public License, as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License + * for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this distribution; if not, write to: + * Free Software Foundation, Inc. + * 51 Franklin Street, Fifth Floor + * Boston, MA 02110-1301 USA + * + */ +package org.hibernate.tuple.entity; + +import java.util.Map; +import java.lang.reflect.Constructor; +import java.io.Serializable; + + +import org.hibernate.util.FastHashMap; +import org.hibernate.util.ReflectHelper; +import org.hibernate.EntityMode; +import org.hibernate.HibernateException; +import org.hibernate.mapping.PersistentClass; + +/** + * A registry allowing users to define the default {@link EntityTuplizer} class to use per {@link EntityMode}. + * + * @author Steve Ebersole + */ +public class EntityTuplizerFactory implements Serializable { + + public static final Class[] ENTITY_TUP_CTOR_SIG = new Class[] { EntityMetamodel.class, PersistentClass.class }; + + private Map defaultImplClassByMode = buildBaseMapping(); + + /** + * Method allowing registration of the tuplizer class to use as default for a particular entity-mode. + * + * @param entityMode The entity-mode for which to register the tuplizer class + * @param tuplizerClass The class to use as the default tuplizer for the given entity-mode. + */ + public void registerDefaultTuplizerClass(EntityMode entityMode, Class tuplizerClass) { + assert isEntityTuplizerImplementor( tuplizerClass ) + : "Specified tuplizer class [" + tuplizerClass.getName() + "] does not implement " + EntityTuplizer.class.getName(); + assert hasProperConstructor( tuplizerClass ) + : "Specified tuplizer class [" + tuplizerClass.getName() + "] is not properly instantiatable"; + + defaultImplClassByMode.put( entityMode, tuplizerClass ); + } + + /** + * Construct an instance of the given tuplizer class. + * + * @param tuplizerClassName The name of the tuplizer class to instantiate + * @param metamodel The metadata for the entity. + * @param persistentClass The mapping info for the entity. + * + * @return The instantiated tuplizer + * + * @throws HibernateException If class name cannot be resolved to a class reference, or if the + * {@link Constructor#newInstance} call fails. + */ + public EntityTuplizer constructTuplizer( + String tuplizerClassName, + EntityMetamodel metamodel, + PersistentClass persistentClass) { + try { + Class tuplizerClass = ReflectHelper.classForName( tuplizerClassName ); + return constructTuplizer( tuplizerClass, metamodel, persistentClass ); + } + catch ( ClassNotFoundException e ) { + throw new HibernateException( "Could not locate specified tuplizer class [" + tuplizerClassName + "]" ); + } + } + + /** + * Construct an instance of the given tuplizer class. + * + * @param tuplizerClass The tuplizer class to instantiate + * @param metamodel The metadata for the entity. + * @param persistentClass The mapping info for the entity. + * + * @return The instantiated tuplizer + * + * @throws HibernateException if the {@link Constructor#newInstance} call fails. + */ + public EntityTuplizer constructTuplizer( + Class tuplizerClass, + EntityMetamodel metamodel, + PersistentClass persistentClass) { + Constructor ctor = getProperConstructor( tuplizerClass ); + assert ctor != null : "Unable to locate proper constructor for tuplizer [" + tuplizerClass.getName() + "]"; + try { + return ( EntityTuplizer ) ctor.newInstance( new Object[] { metamodel, persistentClass } ); + } + catch ( Throwable t ) { + throw new HibernateException( "Unable to instantiate default tuplizer [" + tuplizerClass.getName() + "]", t ); + } + } + + /** + * Construct am instance of the default tuplizer for the given entity-mode. + * + * @param entityMode The entity mode for which to build a default tuplizer. + * @param metamodel The entity metadata. + * @param persistentClass The entity mapping info. + * + * @return The instantiated tuplizer + * + * @throws HibernateException If no default tuplizer found for that entity-mode; may be re-thrown from + * {@link #constructTuplizer} too. + */ + public EntityTuplizer constructDefaultTuplizer( + EntityMode entityMode, + EntityMetamodel metamodel, + PersistentClass persistentClass) { + Class tuplizerClass = ( Class ) defaultImplClassByMode.get( entityMode ); + if ( tuplizerClass == null ) { + throw new HibernateException( "could not determine default tuplizer class to use [" + entityMode + "]" ); + } + + return constructTuplizer( tuplizerClass, metamodel, persistentClass ); + } + + private boolean isEntityTuplizerImplementor(Class tuplizerClass) { + return ReflectHelper.implementsInterface( tuplizerClass, EntityTuplizer.class ); + } + + private boolean hasProperConstructor(Class tuplizerClass) { + return getProperConstructor( tuplizerClass ) != null; + } + + private Constructor getProperConstructor(Class clazz) { + Constructor ctor = null; + try { + ctor = clazz.getDeclaredConstructor( ENTITY_TUP_CTOR_SIG ); + if ( ! ReflectHelper.isPublic( ctor ) ) { + try { + // found a ctor, but it was not publicly accessible so try to request accessibility + ctor.setAccessible( true ); + } + catch ( SecurityException e ) { + ctor = null; + } + } + } + catch ( NoSuchMethodException ignore ) { + } + + return ctor; + } + + private static Map buildBaseMapping() { + Map map = new FastHashMap(); + map.put( EntityMode.POJO, PojoEntityTuplizer.class ); + map.put( EntityMode.DOM4J, Dom4jEntityTuplizer.class ); + map.put( EntityMode.MAP, DynamicMapEntityTuplizer.class ); + return map; + } +} Modified: core/branches/Branch_3_3/core/src/main/java/org/hibernate/util/ReflectHelper.java =================================================================== --- core/branches/Branch_3_3/core/src/main/java/org/hibernate/util/ReflectHelper.java 2008-10-08 15:54:11 UTC (rev 15286) +++ core/branches/Branch_3_3/core/src/main/java/org/hibernate/util/ReflectHelper.java 2008-10-08 16:42:46 UTC (rev 15287) @@ -39,78 +39,154 @@ import org.hibernate.type.PrimitiveType; import org.hibernate.type.Type; - +/** + * Utility class for various reflection operations. + * + * @author Gavin King + * @author Steve Ebersole + */ public final class ReflectHelper { //TODO: this dependency is kinda Bad private static final PropertyAccessor BASIC_PROPERTY_ACCESSOR = new BasicPropertyAccessor(); private static final PropertyAccessor DIRECT_PROPERTY_ACCESSOR = new DirectPropertyAccessor(); - private static final Class[] NO_CLASSES = new Class[0]; - private static final Class[] OBJECT = new Class[] { Object.class }; + public static final Class[] NO_PARAM_SIGNATURE = new Class[0]; + public static final Object[] NO_PARAMS = new Object[0]; + + public static final Class[] SINGLE_OBJECT_PARAM_SIGNATURE = new Class[] { Object.class }; + private static final Method OBJECT_EQUALS; - private static final Class[] NO_PARAM = new Class[] { }; + private static final Method OBJECT_HASHCODE; - private static final Method OBJECT_HASHCODE; static { Method eq; Method hash; try { - eq = Object.class.getMethod("equals", OBJECT); - hash = Object.class.getMethod("hashCode", NO_PARAM); + eq = extractEqualsMethod( Object.class ); + hash = extractHashCodeMethod( Object.class ); } - catch (Exception e) { - throw new AssertionFailure("Could not find Object.equals() or Object.hashCode()", e); + catch ( Exception e ) { + throw new AssertionFailure( "Could not find Object.equals() or Object.hashCode()", e ); } OBJECT_EQUALS = eq; OBJECT_HASHCODE = hash; } + /** + * Disallow instantiation of ReflectHelper. + */ + private ReflectHelper() { + } + + /** + * Encapsulation of getting hold of a class's {@link Object#equals equals} method. + * + * @param clazz The class from which to extract the equals method. + * @return The equals method reference + * @throws NoSuchMethodException Should indicate an attempt to extract equals method from interface. + */ + public static Method extractEqualsMethod(Class clazz) throws NoSuchMethodException { + return clazz.getMethod( "equals", SINGLE_OBJECT_PARAM_SIGNATURE ); + } + + /** + * Encapsulation of getting hold of a class's {@link Object#hashCode hashCode} method. + * + * @param clazz The class from which to extract the hashCode method. + * @return The hashCode method reference + * @throws NoSuchMethodException Should indicate an attempt to extract hashCode method from interface. + */ + public static Method extractHashCodeMethod(Class clazz) throws NoSuchMethodException { + return clazz.getMethod( "hashCode", NO_PARAM_SIGNATURE ); + } + + /** + * Determine if the given class defines an {@link Object#equals} override. + * + * @param clazz The class to check + * @return True if clazz defines an equals override. + */ public static boolean overridesEquals(Class clazz) { Method equals; try { - equals = clazz.getMethod("equals", OBJECT); + equals = extractEqualsMethod( clazz ); } - catch (NoSuchMethodException nsme) { + catch ( NoSuchMethodException nsme ) { return false; //its an interface so we can't really tell anything... } - return !OBJECT_EQUALS.equals(equals); + return !OBJECT_EQUALS.equals( equals ); } + /** + * Determine if the given class defines a {@link Object#hashCode} override. + * + * @param clazz The class to check + * @return True if clazz defines an hashCode override. + */ public static boolean overridesHashCode(Class clazz) { Method hashCode; try { - hashCode = clazz.getMethod("hashCode", NO_PARAM); + hashCode = extractHashCodeMethod( clazz ); } - catch (NoSuchMethodException nsme) { + catch ( NoSuchMethodException nsme ) { return false; //its an interface so we can't really tell anything... } - return !OBJECT_HASHCODE.equals(hashCode); + return !OBJECT_HASHCODE.equals( hashCode ); } - public static Class reflectedPropertyClass(String className, String name) throws MappingException { - try { - Class clazz = ReflectHelper.classForName(className); - return getter(clazz, name).getReturnType(); + /** + * Determine if the given class implements the given interface. + * + * @param clazz The class to check + * @param intf The interface to check it against. + * @return True if the class does implement the interface, false otherwise. + */ + public static boolean implementsInterface(Class clazz, Class intf) { + assert intf.isInterface() : "Interface to check was not an interface"; + + Class[] interfaces = clazz.getInterfaces(); + for ( int i = 0; i < interfaces.length; i++ ) { + if ( intf.isAssignableFrom( interfaces[i] ) ) { + return true; + } } - catch (ClassNotFoundException cnfe) { - throw new MappingException("class " + className + " not found while looking for property: " + name, cnfe); - } + return false; } - private static Getter getter(Class clazz, String name) throws MappingException { + /** + * Perform resolution of a class name. + * <p/> + * Here we first check the context classloader, if one, before delegating to + * {@link Class#forName(String, boolean, ClassLoader)} using the caller's classloader + * + * @param name The class name + * @param caller The class from which this call originated (in order to access that class's loader). + * @return The class reference. + * @throws ClassNotFoundException From {@link Class#forName(String, boolean, ClassLoader)}. + */ + public static Class classForName(String name, Class caller) throws ClassNotFoundException { try { - return BASIC_PROPERTY_ACCESSOR.getGetter(clazz, name); + ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader(); + if ( contextClassLoader != null ) { + return contextClassLoader.loadClass( name ); + } } - catch (PropertyNotFoundException pnfe) { - return DIRECT_PROPERTY_ACCESSOR.getGetter(clazz, name); + catch ( Throwable ignore ) { } + return Class.forName( name, true, caller.getClassLoader() ); } - public static Getter getGetter(Class theClass, String name) throws MappingException { - return BASIC_PROPERTY_ACCESSOR.getGetter(theClass, name); - } - + /** + * Perform resolution of a class name. + * <p/> + * Same as {@link #classForName(String, Class)} except that here we delegate to + * {@link Class#forName(String)} if the context classloader lookup is unsuccessful. + * + * @param name The class name + * @return The class reference. + * @throws ClassNotFoundException From {@link Class#forName(String)}. + */ public static Class classForName(String name) throws ClassNotFoundException { try { ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader(); @@ -118,27 +194,79 @@ return contextClassLoader.loadClass(name); } } - catch ( Throwable t ) { + catch ( Throwable ignore ) { } return Class.forName( name ); } - public static Class classForName(String name, Class caller) throws ClassNotFoundException { + /** + * Is this member publicly accessible. + * <p/> + * Short-hand for {@link #isPublic(Class, Member)} passing the member + {@link Member#getDeclaringClass()} + * + * @param member The member to check + * @return True if the member is publicly accessible. + */ + public static boolean isPublic(Member member) { + return isPublic( member.getDeclaringClass(), member ); + } + + /** + * Is this member publicly accessible. + * + * @param clazz The class which defines the member + * @param member The memeber. + * @return True if the member is publicly accessible, false otherwise. + */ + public static boolean isPublic(Class clazz, Member member) { + return Modifier.isPublic( member.getModifiers() ) && Modifier.isPublic( clazz.getModifiers() ); + } + + /** + * Attempt to resolve the specified property type through reflection. + * + * @param className The name of the class owning the property. + * @param name The name of the property. + * @return The type of the property. + * @throws MappingException Indicates we were unable to locate the property. + */ + public static Class reflectedPropertyClass(String className, String name) throws MappingException { try { - ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader(); - if ( contextClassLoader != null ) { - return contextClassLoader.loadClass( name ); - } + Class clazz = ReflectHelper.classForName( className ); + return getter( clazz, name ).getReturnType(); } - catch ( Throwable e ) { + catch ( ClassNotFoundException cnfe ) { + throw new MappingException( "class " + className + " not found while looking for property: " + name, cnfe ); } - return Class.forName( name, true, caller.getClassLoader() ); } - public static boolean isPublic(Class clazz, Member member) { - return Modifier.isPublic( member.getModifiers() ) && Modifier.isPublic( clazz.getModifiers() ); + private static Getter getter(Class clazz, String name) throws MappingException { + try { + return BASIC_PROPERTY_ACCESSOR.getGetter( clazz, name ); + } + catch ( PropertyNotFoundException pnfe ) { + return DIRECT_PROPERTY_ACCESSOR.getGetter( clazz, name ); + } } + /** + * Directly retrieve the {@link Getter} reference via the {@link BasicPropertyAccessor}. + * + * @param theClass The class owning the property + * @param name The name of the property + * @return The getter. + * @throws MappingException Indicates we were unable to locate the property. + */ + public static Getter getGetter(Class theClass, String name) throws MappingException { + return BASIC_PROPERTY_ACCESSOR.getGetter( theClass, name ); + } + + /** + * Resolve a constant to its actual value. + * + * @param name The name + * @return The value + */ public static Object getConstantValue(String name) { Class clazz; try { @@ -148,61 +276,90 @@ return null; } try { - return clazz.getField( StringHelper.unqualify( name ) ).get(null); + return clazz.getField( StringHelper.unqualify( name ) ).get( null ); } catch ( Throwable t ) { return null; } } + /** + * Retrieve the default (no arg) constructor from the given class. + * + * @param clazz The class for which to retrieve the default ctor. + * @return The default constructor. + * @throws PropertyNotFoundException Indicates there was not publicly accessible, no-arg constructor (todo : why PropertyNotFoundException???) + */ public static Constructor getDefaultConstructor(Class clazz) throws PropertyNotFoundException { + if ( isAbstractClass( clazz ) ) { + return null; + } - if ( isAbstractClass(clazz) ) return null; - try { - Constructor constructor = clazz.getDeclaredConstructor(NO_CLASSES); - if ( !isPublic(clazz, constructor) ) { - constructor.setAccessible(true); + Constructor constructor = clazz.getDeclaredConstructor( NO_PARAM_SIGNATURE ); + if ( !isPublic( clazz, constructor ) ) { + constructor.setAccessible( true ); } return constructor; } - catch (NoSuchMethodException nme) { + catch ( NoSuchMethodException nme ) { throw new PropertyNotFoundException( - "Object class " + clazz.getName() + - " must declare a default (no-argument) constructor" + "Object class [" + clazz.getName() + "] must declare a default (no-argument) constructor" ); } - } + /** + * Determine if the given class is declared abstract. + * + * @param clazz The class to check. + * @return True if the class is abstract, false otherwise. + */ public static boolean isAbstractClass(Class clazz) { int modifier = clazz.getModifiers(); return Modifier.isAbstract(modifier) || Modifier.isInterface(modifier); } - + + /** + * Determine is the given class is declared final. + * + * @param clazz The class to check. + * @return True if the class is final, flase otherwise. + */ public static boolean isFinalClass(Class clazz) { return Modifier.isFinal( clazz.getModifiers() ); } + /** + * Retrieve a constructor for the given class, with arguments matching the specified Hibernate mapping + * {@link Type types}. + * + * @param clazz The class needing instantiation + * @param types The types representing the required ctor param signature + * @return The matching constructor. + * @throws PropertyNotFoundException Indicates we could not locate an appropriate constructor (todo : again with PropertyNotFoundException???) + */ public static Constructor getConstructor(Class clazz, Type[] types) throws PropertyNotFoundException { final Constructor[] candidates = clazz.getConstructors(); - for ( int i=0; i<candidates.length; i++ ) { + for ( int i = 0; i < candidates.length; i++ ) { final Constructor constructor = candidates[i]; final Class[] params = constructor.getParameterTypes(); - if ( params.length==types.length ) { + if ( params.length == types.length ) { boolean found = true; - for ( int j=0; j<params.length; j++ ) { + for ( int j = 0; j < params.length; j++ ) { final boolean ok = params[j].isAssignableFrom( types[j].getReturnedClass() ) || ( - types[j] instanceof PrimitiveType && - params[j] == ( (PrimitiveType) types[j] ).getPrimitiveClass() + types[j] instanceof PrimitiveType && + params[j] == ( ( PrimitiveType ) types[j] ).getPrimitiveClass() ); - if (!ok) { + if ( !ok ) { found = false; break; } } - if (found) { - if ( !isPublic(clazz, constructor) ) constructor.setAccessible(true); + if ( found ) { + if ( !isPublic( clazz, constructor ) ) { + constructor.setAccessible( true ); + } return constructor; } } @@ -219,6 +376,4 @@ } } - private ReflectHelper() {} - }