Java tutorial
/* * Copyright (c) 2008-2013, 2015 Eike Stepper (Berlin, Germany) and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * Eike Stepper - initial API and implementation * Martin Taal - changed handling of propertygetters/setters */ package org.eclipse.emf.cdo.server.internal.hibernate.tuplizer; import org.eclipse.emf.cdo.common.model.EMFUtil; import org.eclipse.emf.cdo.common.revision.CDORevision; import org.eclipse.emf.cdo.eresource.EresourcePackage; import org.eclipse.emf.cdo.server.internal.hibernate.CDOHibernateConstants; import org.eclipse.emf.cdo.server.internal.hibernate.HibernateStore; import org.eclipse.emf.cdo.server.internal.hibernate.HibernateUtil; import org.eclipse.emf.cdo.server.internal.hibernate.bundle.OM; import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision; import org.eclipse.net4j.util.om.trace.ContextTracer; import org.eclipse.emf.ecore.EAnnotation; import org.eclipse.emf.ecore.EAttribute; import org.eclipse.emf.ecore.EClass; import org.eclipse.emf.ecore.EPackage; import org.eclipse.emf.ecore.EReference; import org.eclipse.emf.ecore.EStructuralFeature; import org.eclipse.emf.ecore.EcoreFactory; import org.hibernate.EntityMode; import org.hibernate.EntityNameResolver; import org.hibernate.HibernateException; import org.hibernate.engine.spi.SessionFactoryImplementor; import org.hibernate.mapping.PersistentClass; import org.hibernate.mapping.Property; import org.hibernate.metamodel.binding.AttributeBinding; import org.hibernate.metamodel.binding.EntityBinding; import org.hibernate.property.Getter; import org.hibernate.property.Setter; import org.hibernate.proxy.ProxyFactory; import org.hibernate.tuple.Instantiator; import org.hibernate.tuple.entity.AbstractEntityTuplizer; import org.hibernate.tuple.entity.EntityMetamodel; /** * @author Eike Stepper */ public class CDORevisionTuplizer extends AbstractEntityTuplizer { private static final ContextTracer TRACER = new ContextTracer(OM.DEBUG, CDORevisionTuplizer.class); private static final String EPACKAGE_META = "epackage"; //$NON-NLS-1$ private static final String ECLASSNAME_META = "eclassName"; //$NON-NLS-1$ private EClass eClass; public CDORevisionTuplizer(EntityMetamodel entityMetamodel, PersistentClass mappingInfo) { super(entityMetamodel, mappingInfo); if (TRACER.isEnabled()) { TRACER.trace("Created CDORevisionTuplizer for entity " + mappingInfo.getEntityName()); //$NON-NLS-1$ } initEClass(mappingInfo); } private void initEClass(PersistentClass mappingInfo) { if (eClass != null) { return; } HibernateStore hbStore = HibernateStore.getCurrentHibernateStore(); // find the EClass/Package String entityName = mappingInfo.getEntityName(); String ePackageURI = mappingInfo.getMetaAttribute(EPACKAGE_META).getValue(); String eClassName = mappingInfo.getMetaAttribute(ECLASSNAME_META).getValue(); if (ePackageURI == null || eClassName == null) { throw new IllegalArgumentException("The mapping for the persistentclass " + mappingInfo.getEntityName() //$NON-NLS-1$ + " is incorrect, there should be meta data tags for both epackage and " //$NON-NLS-1$ + "eclassname, one or both are missing."); //$NON-NLS-1$ } if (TRACER.isEnabled()) { TRACER.trace("EntityName/eclassname/packageURI " + entityName + "/" + eClassName + "/" + ePackageURI); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ } for (EPackage ePackage : hbStore.getPackageHandler().getEPackages()) { if (ePackage.getNsURI().compareTo(ePackageURI) != 0) { continue; } for (EClass localCdoClass : EMFUtil.getPersistentClasses(ePackage)) { if (localCdoClass.getName().compareTo(eClassName) == 0) { eClass = localCdoClass; break; } } } if (eClass == null && ePackageURI.compareTo(EresourcePackage.eINSTANCE.getNsURI()) == 0) { for (EClass localCdoClass : EMFUtil.getPersistentClasses(EresourcePackage.eINSTANCE)) { if (localCdoClass.getName().compareTo(eClassName) == 0) { eClass = localCdoClass; if (TRACER.isEnabled()) { TRACER.trace("Class is CDOResource class"); //$NON-NLS-1$ } break; } } } // add the entityName <--> EClass mapping HibernateStore.getCurrentHibernateStore().addEntityNameEClassMapping(entityName, eClass); if (eClass == null) { throw new IllegalArgumentException("The mapped class " + mappingInfo.getEntityName() //$NON-NLS-1$ + " does not have a eClass equivalent"); //$NON-NLS-1$ } } /* * (non-Javadoc) * @see org.hibernate.tuple.entity.EntityTuplizer#determineConcreteSubclassEntityName(java.lang.Object, * org.hibernate.engine.SessionFactoryImplementor) */ public String determineConcreteSubclassEntityName(Object entityInstance, SessionFactoryImplementor factory) { final Class<?> concreteEntityClass = entityInstance.getClass(); if (concreteEntityClass == getMappedClass()) { return getEntityName(); } String entityName = getEntityMetamodel().findEntityNameByEntityClass(concreteEntityClass); if (entityName == null) { throw new HibernateException( "Unable to resolve entity name from Class [" + concreteEntityClass.getName() + "]" //$NON-NLS-1$ //$NON-NLS-2$ + " expected instance/subclass of [" + getEntityName() + "]"); //$NON-NLS-1$ //$NON-NLS-2$ } return entityName; } public EntityMode getEntityMode() { return EntityMode.MAP; } public EntityNameResolver[] getEntityNameResolvers() { return new EntityNameResolver[0]; // return new EntityNameResolver[] { new CDOEntityNameResolver() }; } // private class CDOEntityNameResolver implements EntityNameResolver // { // public String resolveEntityName(Object object) // { // return getEntityName(); // } // } public EClass getEClass() { return eClass; } @Override protected Getter buildPropertyGetter(Property mappedProperty, PersistentClass mappedEntity) { initEClass(mappedEntity); if (TRACER.isEnabled()) { TRACER.trace("Building property getter for " + eClass.getName() + "." + mappedProperty.getName()); //$NON-NLS-1$ //$NON-NLS-2$ } if (mappedProperty.isBackRef()) { return mappedProperty.getGetter(mappedEntity.getMappedClass()); } final CDOPropertyGetter getter; if (mappedProperty == mappedEntity.getIdentifierProperty()) { getter = new CDOIDPropertyGetter(this, mappedProperty.getName()); } else if (mappedProperty.getMetaAttribute("version") != null) { getter = new CDOVersionPropertyGetter(this, mappedProperty.getName()); } else if (mappedProperty.getName().compareTo(CDOHibernateConstants.RESOURCE_PROPERTY) == 0) { getter = new CDOResourceIDGetter(this, mappedProperty.getName()); } else if (mappedProperty.getName().compareTo(CDOHibernateConstants.CONTAINER_PROPERTY) == 0) { getter = new CDOContainerGetter(this, mappedProperty.getName()); } else if (mappedProperty.getName().compareTo(CDOHibernateConstants.COMMITTIMESTAMP_PROPERTY) == 0) { getter = new CDOBranchTimeStampGetter(this, mappedProperty.getName()); } else { EStructuralFeature feature = getEClass().getEStructuralFeature(mappedProperty.getName()); if (feature instanceof EReference && feature.isMany() && HibernateUtil.getInstance().isCDOResourceContents(feature)) { getter = new CDOManyAttributeGetter(this, mappedProperty.getName()); } else if (feature instanceof EReference && feature.isMany()) { getter = new CDOManyReferenceGetter(this, mappedProperty.getName()); } else if (feature instanceof EReference) { getter = new CDOReferenceGetter(this, mappedProperty.getName()); } else if (feature instanceof EAttribute && feature.isMany()) { getter = new CDOManyAttributeGetter(this, mappedProperty.getName()); } else { getter = new CDOPropertyGetter(this, mappedProperty.getName()); } } HibernateStore hbStore = HibernateStore.getCurrentHibernateStore(); getter.setPersistenceOptions(hbStore.getCDODataStore().getPersistenceOptions()); return getter; } @Override protected Setter buildPropertySetter(Property mappedProperty, PersistentClass mappedEntity) { initEClass(mappedEntity); if (TRACER.isEnabled()) { TRACER.trace("Building property setter for " + eClass.getName() + "." + mappedProperty.getName()); //$NON-NLS-1$ //$NON-NLS-2$ } if (mappedProperty.isBackRef()) { return mappedProperty.getSetter(mappedEntity.getMappedClass()); } final CDOPropertySetter setter; if (mappedProperty == mappedEntity.getIdentifierProperty()) { setIdentifierTypeAsAnnotation(mappedProperty); setter = new CDOIDPropertySetter(this, mappedProperty.getName()); } else if (mappedProperty.getMetaAttribute("version") != null) { setter = new CDOVersionPropertySetter(this, mappedProperty.getName()); } else if (mappedProperty.getName().compareTo(CDOHibernateConstants.RESOURCE_PROPERTY) == 0) { setter = new CDOResourceIDSetter(this, mappedProperty.getName()); } else if (mappedProperty.getName().compareTo(CDOHibernateConstants.CONTAINER_PROPERTY) == 0) { setter = new CDOContainerSetter(this, mappedProperty.getName()); } else if (mappedProperty.getName().compareTo(CDOHibernateConstants.COMMITTIMESTAMP_PROPERTY) == 0) { setter = new CDOBranchTimeStampSetter(this, mappedProperty.getName()); } else { EStructuralFeature feature = getEClass().getEStructuralFeature(mappedProperty.getName()); if (feature instanceof EReference && feature.isMany() && HibernateUtil.getInstance().isCDOResourceContents(feature)) { setter = new CDOManyAttributeSetter(this, mappedProperty.getName()); } else if (feature instanceof EReference && feature.isMany()) { setter = new CDOManyReferenceSetter(this, mappedProperty.getName()); } else if (feature instanceof EAttribute && feature.isMany()) { setter = new CDOManyAttributeSetter(this, mappedProperty.getName()); } else if (feature instanceof EReference) { setter = new CDOReferenceSetter(this, mappedProperty.getName()); } else { setter = new CDOPropertySetter(this, mappedProperty.getName()); } } HibernateStore hbStore = HibernateStore.getCurrentHibernateStore(); setter.setPersistenceOptions(hbStore.getCDODataStore().getPersistenceOptions()); return setter; } @Override protected Instantiator buildInstantiator(PersistentClass mappingInfo) { return new CDORevisionInstantiator(this, mappingInfo); } @Override protected ProxyFactory buildProxyFactory(PersistentClass mappingInfo, Getter idGetter, Setter idSetter) { CDORevisionProxyFactory pf = new CDORevisionProxyFactory(); pf.setEntityName(getEntityName()); try { pf.postInstantiate(getEntityName(), null, null, null, null, null); } catch (HibernateException ex) { OM.LOG.error("Could not create proxy factory for " + getEntityName(), ex); //$NON-NLS-1$ pf = null; } return pf; } @SuppressWarnings("rawtypes") public Class getMappedClass() { return InternalCDORevision.class; } @SuppressWarnings("rawtypes") public Class getConcreteProxyClass() { return InternalCDORevision.class; } public boolean isInstrumented() { return false; } private void setIdentifierTypeAsAnnotation(Property prop) { EAnnotation eAnnotation = getEClass().getEAnnotation(HibernateStore.ID_TYPE_EANNOTATION_SOURCE); if (eAnnotation == null) { eAnnotation = EcoreFactory.eINSTANCE.createEAnnotation(); eAnnotation.setSource(HibernateStore.ID_TYPE_EANNOTATION_SOURCE); eAnnotation.getDetails().put(HibernateStore.ID_TYPE_EANNOTATION_KEY, prop.getType().getName()); getEClass().getEAnnotations().add(eAnnotation); } else if (!eAnnotation.getDetails().containsKey(HibernateStore.ID_TYPE_EANNOTATION_KEY)) { eAnnotation.getDetails().put(HibernateStore.ID_TYPE_EANNOTATION_KEY, prop.getType().getName()); } } @Override protected Instantiator buildInstantiator(EntityBinding arg0) { return null; } @Override protected Getter buildPropertyGetter(AttributeBinding arg0) { return null; } @Override protected Setter buildPropertySetter(AttributeBinding arg0) { return null; } @Override protected ProxyFactory buildProxyFactory(EntityBinding arg0, Getter arg1, Setter arg2) { return null; } @Override public Object getVersion(Object entity) throws HibernateException { if (entity instanceof CDORevision) { return ((CDORevision) entity).getVersion(); } return super.getVersion(entity); } }