| /* |
| * Copyright (c) 2008-2012 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: |
| * Martin Taal - copied from CDORevisionPropertyHandler and adapted |
| * Eike Stepper - maintenance |
| */ |
| package org.eclipse.emf.cdo.server.internal.hibernate.tuplizer; |
| |
| import org.eclipse.emf.cdo.common.revision.CDORevisionData; |
| import org.eclipse.emf.cdo.server.internal.hibernate.tuplizer.CDORevisionPropertyAccessor.CDORevisionSetter; |
| import org.eclipse.emf.cdo.spi.common.revision.InternalCDORevision; |
| |
| import org.eclipse.emf.common.util.Enumerator; |
| import org.eclipse.emf.ecore.EEnum; |
| import org.eclipse.emf.ecore.EStructuralFeature; |
| import org.eclipse.emf.teneo.PersistenceOptions; |
| |
| import org.hibernate.HibernateException; |
| import org.hibernate.engine.spi.SessionImplementor; |
| import org.hibernate.property.Getter; |
| |
| import java.lang.reflect.Member; |
| import java.lang.reflect.Method; |
| import java.util.Map; |
| |
| /** |
| * TODO How does this differ from {@link CDORevisionSetter}? Both needed? |
| * |
| * @author Martin Taal |
| */ |
| public class CDOPropertyGetter extends CDOPropertyHandler implements Getter |
| { |
| private static final long serialVersionUID = 1L; |
| |
| private final boolean isEEnum; |
| |
| private final EEnum eEnum; |
| |
| private boolean handleUnsetAsNull = false; |
| |
| public CDOPropertyGetter(CDORevisionTuplizer tuplizer, String propertyName) |
| { |
| super(tuplizer, propertyName); |
| if (getEStructuralFeature() != null) |
| { |
| isEEnum = getEStructuralFeature().getEType() instanceof EEnum; |
| if (isEEnum) |
| { |
| eEnum = (EEnum)getEStructuralFeature().getEType(); |
| } |
| else |
| { |
| eEnum = null; |
| } |
| } |
| else |
| { |
| isEEnum = false; |
| eEnum = null; |
| } |
| } |
| |
| public Object get(Object target) throws HibernateException |
| { |
| InternalCDORevision revision = (InternalCDORevision)target; |
| Object value = revision.getValue(getEStructuralFeature()); |
| if (value == CDORevisionData.NIL) |
| { |
| // explicitly set to null |
| return null; |
| } |
| |
| final EStructuralFeature eFeature = getEStructuralFeature(); |
| if (value == null) |
| { |
| if (eFeature.getDefaultValue() == null) |
| { |
| return null; |
| } |
| |
| // this happens when you don't set a value explicitly in CDO |
| // then null is passed while the user may expect the default |
| // value to be set. |
| if (useDefaultValue()) |
| { |
| value = eFeature.getDefaultValue(); |
| } |
| } |
| |
| // hibernate sees eenums, CDO sees int |
| if (isEEnum && value != null) |
| { |
| if (value instanceof Enumerator) |
| { |
| return value; |
| } |
| |
| return eEnum.getEEnumLiteral((Integer)value); |
| } |
| |
| return value; |
| } |
| |
| // see CDOPropertyGetter#useDefaultValue |
| private boolean useDefaultValue() |
| { |
| final EStructuralFeature eFeature = getEStructuralFeature(); |
| return eFeature.isRequired() || !handleUnsetAsNull && eFeature.isUnsettable(); |
| } |
| |
| @SuppressWarnings("rawtypes") |
| public Object getForInsert(Object target, Map mergeMap, SessionImplementor session) throws HibernateException |
| { |
| return get(target); |
| } |
| |
| public Method getMethod() |
| { |
| return null; |
| } |
| |
| public String getMethodName() |
| { |
| return null; |
| } |
| |
| public Member getMember() |
| { |
| return null; |
| } |
| |
| @SuppressWarnings("rawtypes") |
| public Class getReturnType() |
| { |
| return Object.class; |
| } |
| |
| @Override |
| public void setPersistenceOptions(PersistenceOptions persistenceOptions) |
| { |
| super.setPersistenceOptions(persistenceOptions); |
| handleUnsetAsNull = persistenceOptions.getHandleUnsetAsNull(); |
| } |
| } |