diff options
Diffstat (limited to 'eclipselink/org.eclipse.emf.teneo.eclipselink/src/org/eclipse/emf/teneo/eclipselink/EmfHelper.java')
| -rwxr-xr-x | eclipselink/org.eclipse.emf.teneo.eclipselink/src/org/eclipse/emf/teneo/eclipselink/EmfHelper.java | 277 |
1 files changed, 0 insertions, 277 deletions
diff --git a/eclipselink/org.eclipse.emf.teneo.eclipselink/src/org/eclipse/emf/teneo/eclipselink/EmfHelper.java b/eclipselink/org.eclipse.emf.teneo.eclipselink/src/org/eclipse/emf/teneo/eclipselink/EmfHelper.java deleted file mode 100755 index c20010890..000000000 --- a/eclipselink/org.eclipse.emf.teneo.eclipselink/src/org/eclipse/emf/teneo/eclipselink/EmfHelper.java +++ /dev/null @@ -1,277 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2008 Oracle and Geensys. - * 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: - * Oracle and Geensys - initial API and implementation - *******************************************************************************/ -package org.eclipse.emf.teneo.eclipselink; - -import java.lang.reflect.Field; -import java.lang.reflect.Method; -import java.util.Collection; -import java.util.Map; - -import org.eclipse.emf.common.util.BasicEList; -import org.eclipse.emf.common.util.BasicEMap; -import org.eclipse.emf.common.util.EList; -import org.eclipse.emf.common.util.EMap; -import org.eclipse.emf.ecore.EClass; -import org.eclipse.emf.ecore.InternalEObject; -import org.eclipse.emf.ecore.util.EObjectEList; -import org.eclipse.emf.ecore.util.EcoreEList; -import org.eclipse.emf.ecore.util.EcoreEMap; -import org.eclipse.emf.teneo.eclipselink.emap.EclipseLinkEMap; -import org.eclipse.emf.teneo.eclipselink.internal.messages.Messages; -import org.eclipse.osgi.util.NLS; -import org.eclipse.persistence.internal.helper.Helper; -import org.eclipse.persistence.internal.security.PrivilegedAccessHelper; - -public class EmfHelper { - private static EmfHelper instance = new EmfHelper(); - private Field delegateEListField; - private Field eObjectEListFeatureIDField; - private Field eObjectEListOwnerField; - private Field ecoreEMapEntryEClassField; - private Field ecoreEMapEntryClassField; - - private EmfHelper() { - try { - delegateEListField = Helper.getField(BasicEMap.class, "delegateEList"); //$NON-NLS-1$ - eObjectEListFeatureIDField = Helper.getField(EObjectEList.class, "featureID"); //$NON-NLS-1$ - eObjectEListOwnerField = Helper.getField(EObjectEList.class, "owner"); //$NON-NLS-1$ - ecoreEMapEntryEClassField = Helper.getField(EcoreEMap.class, "entryEClass"); //$NON-NLS-1$ - ecoreEMapEntryClassField = Helper.getField(EcoreEMap.class, "entryClass"); //$NON-NLS-1$ - } catch (NoSuchFieldException e) { - throw new RuntimeException(Messages.exception_unableToFindDelegateEListFieldOnBasicEMap, e); - } - } - - public static EmfHelper getInstance() { - return instance; - } - - @SuppressWarnings("unchecked") - public <E, K, V> void setECollectionContents(Collection<E> listContents, EList<E> targetList) { - if (listContents instanceof EMap<?, ?>) { - EmfHelper.getInstance().setEMapContents((EMap<K, V>) listContents, (EMap<K, V>) targetList); - } else { - EmfHelper.getInstance().setEListContents(listContents, targetList); - } - } - - public <E> void setEListContents(Collection<E> listContents, EList<E> targetList) { - if (targetList instanceof EcoreEList<?>) { - Object[] contentsArray = listContents.toArray(); - try { - basicSetEListContents(targetList, contentsArray); - // TODO need to determine if the elements are "eContained" - // Need to set container reference on each element in contents array - // for (int i = 0; i < contentsArray.length; i++) { - // Object element = contentsArray[i]; - // if (element instanceof BasicEObjectImpl) { - // BasicEObjectImpl basicEObjectImpl = (BasicEObjectImpl) - // contentsArray[i]; - // // go directly to eBasicSetContainer and not use inverseAdd because - // // inverseAdd tries to remove the object from the owner which leads - // to - // // an infinite loop--eBasicSetContainer does just what is necessary - // basicEObjectImpl.eBasicSetContainer( - // (InternalEObject)ecoreEList.getNotifier(), - // InternalEObject.EOPPOSITE_FEATURE_BASE - ecoreEList.getFeatureID(), - // null); - // } - // } - } catch (Exception e) { - new RuntimeException(Messages.exception_cannotSetOwnerOnEList, e); - } - } else { - String msg = NLS.bind(Messages.exception_errorSettingEListContents$0, targetList.getClass()); - throw new RuntimeException(msg); - } - } - - public <E> boolean addToEList(EList<E> eList, E element) { - if (eList instanceof BasicEList<?>) { - int size = eList.size(); - int newSize = size + 1; - - try { - // use reflection to: delegate.grow(index); - Method growMethod = PrivilegedAccessHelper.getDeclaredMethod(BasicEList.class, "grow", //$NON-NLS-1$ - new Class[] { int.class }); - growMethod.setAccessible(true); - growMethod.invoke(eList, new Object[] { newSize }); - // update EList size - Field sizeField = PrivilegedAccessHelper.getDeclaredField(BasicEList.class, "size", true); //$NON-NLS-1$ - sizeField.set(eList, newSize); - // use reflection to: delegate.assign(index, object); - Method assignMethod = PrivilegedAccessHelper.getDeclaredMethod(BasicEList.class, "assign", new Class[] { //$NON-NLS-1$ - int.class, Object.class }); - assignMethod.setAccessible(true); - assignMethod.invoke(eList, new Object[] { size, element }); - } catch (Exception e) { - new RuntimeException(Messages.exception_errorAddingElementToEList, e); - } - return true; - } else { - return eList.add(element); - } - } - - public boolean removeFromEList(EList<?> eList, Object object) { - if (eList instanceof BasicEList<?>) { - try { - // adapted from BasicEList.remove(Object object) - // to avoid relationship management - int size = eList.size(); - int index = eList.indexOf(object); - Field dataField = Helper.getField(eList.getClass(), "data"); //$NON-NLS-1$ - Object[] data = (Object[]) dataField.get(eList); - if (index >= 0) { - int shifted = size - index - 1; - if (shifted > 0) { - System.arraycopy(data, index + 1, data, index, shifted); - } - // Don't hold onto a duplicate reference to the last object. - data[--size] = null; - } - // update EList size - Field sizeField = PrivilegedAccessHelper.getDeclaredField(BasicEList.class, "size", true); //$NON-NLS-1$ - sizeField.set(eList, size); - } catch (Exception e) { - new RuntimeException(Messages.exception_errorRemovingElementFromEList, e); - } - return true; - } else { - return eList.remove(object); - } - } - - private void basicSetEListContents(EList<?> targetList, Object[] contentsArray) throws NoSuchFieldException, - IllegalAccessException { - Field dataField = Helper.getField(targetList.getClass(), "data"); //$NON-NLS-1$ - PrivilegedAccessHelper.setValueInField(dataField, targetList, contentsArray); - Field sizeField = Helper.getField(targetList.getClass(), "size"); //$NON-NLS-1$ - PrivilegedAccessHelper.setValueInField(sizeField, targetList, contentsArray.length); - } - - // TODO extract common code from addToEMap and setEMapContents to cache - // methods and field - @SuppressWarnings("unchecked") - public <K, V> void setEMapContents(EMap<K, V> mapContents, EMap<K, V> targetMap) { - try { - if (targetMap instanceof BasicEMap<?, ?>) { - BasicEMap<K, V> basicEMap = (BasicEMap<K, V>) targetMap; - // set the entry list - Method basicEMapEnsureEntryDataExistsMethod = PrivilegedAccessHelper.getDeclaredMethod(BasicEMap.class, - "ensureEntryDataExists", new Class[] {}); //$NON-NLS-1$ - basicEMapEnsureEntryDataExistsMethod.setAccessible(true); - basicEMapEnsureEntryDataExistsMethod.invoke(basicEMap, new Object[] {}); - Method basicEMapDoPutMethod = PrivilegedAccessHelper.getDeclaredMethod(BasicEMap.class, "doPut", //$NON-NLS-1$ - new Class[] { BasicEMap.Entry.class }); - basicEMapDoPutMethod.setAccessible(true); - for (Object entry : mapContents.entrySet()) { - basicEMapDoPutMethod.invoke(basicEMap, new Object[] { entry }); - } - // set the delegate list - EList<Map.Entry<K, V>> delegateEList = (EList<Map.Entry<K, V>>) delegateEListField.get(basicEMap); - basicSetEListContents(delegateEList, mapContents.toArray()); - } - } catch (Exception e) { - new RuntimeException(Messages.exception_errorSettingEMapContents, e); - } - } - - // TODO extract common code from addToEMap and setEMapContents to cache - // methods and field - @SuppressWarnings("unchecked") - public <K, V> boolean addToEMap(EMap<K, V> eMap, Map.Entry<K, V> entry) { - if (eMap instanceof EclipseLinkEMap<?, ?>) { - return EmfHelper.getInstance().addToEList(eMap, entry); - } else { - if (eMap instanceof BasicEMap<?, ?>) { - try { - BasicEMap<K, V> basicEMap = (BasicEMap<K, V>) eMap; - // add the entry - Method basicEMapEnsureEntryDataExistsMethod = PrivilegedAccessHelper.getDeclaredMethod( - BasicEMap.class, "ensureEntryDataExists", new Class[] {}); //$NON-NLS-1$ - basicEMapEnsureEntryDataExistsMethod.setAccessible(true); - basicEMapEnsureEntryDataExistsMethod.invoke(basicEMap, new Object[] {}); - Method basicEMapDoPutMethod = PrivilegedAccessHelper.getDeclaredMethod(BasicEMap.class, "doPut", //$NON-NLS-1$ - new Class[] { BasicEMap.Entry.class }); - basicEMapDoPutMethod.setAccessible(true); - basicEMapDoPutMethod.invoke(basicEMap, new Object[] { entry }); - // update the delegate list - EList<Map.Entry<K, V>> delegateEList = (EList<Map.Entry<K, V>>) delegateEListField.get(basicEMap); - addToEList(delegateEList, entry); - } catch (Exception e) { - new RuntimeException(Messages.exception_errorAddingEntryToEMap, e); - } - return true; - } else { - String msg = NLS.bind(Messages.exception_collectionClassNotSupported$0, eMap.getClass().getName()); - throw new RuntimeException(msg); - } - } - } - - @SuppressWarnings("unchecked") - public <K, V> BasicEList<Map.Entry<K, V>> getEMapDelegateEList(BasicEMap<K, V> originalEMap) { - try { - return (BasicEList<Map.Entry<K, V>>) delegateEListField.get(originalEMap); - } catch (Exception e) { - // TODO Throw EclipseLinkEMF Exception - throw new RuntimeException(Messages.exception_errorGettingDelegateList); - } - } - - @SuppressWarnings({ "rawtypes", "unchecked" }) - public Class<? extends Map.Entry> getEcoreEMapEntryClass(EcoreEMap<?, ?> map) { - try { - return (Class<? extends Map.Entry>) ecoreEMapEntryClassField.get(map); - } catch (Exception e) { - // TODO Throw EclipseLinkEMF Exception - throw new RuntimeException(Messages.exception_errorGettingDelegateList); - } - } - - public EClass getEcoreEMapEntryEClass(EcoreEMap<?, ?> map) { - try { - return (EClass) ecoreEMapEntryEClassField.get(map); - } catch (Exception e) { - // TODO Throw EclipseLinkEMF Exception - throw new RuntimeException(Messages.exception_errorGettingEntryEClass); - } - } - - public InternalEObject getEObjectEListOwner(EObjectEList<?> map) { - try { - return (InternalEObject) eObjectEListOwnerField.get(map); - } catch (Exception e) { - // TODO Throw EclipseLinkEMF Exception - throw new RuntimeException(Messages.exception_errorGettingListOwner); - } - } - - public void setEObjectEListOwner(EObjectEList<?> list, InternalEObject owner) { - try { - eObjectEListOwnerField.set(list, owner); - } catch (Exception e) { - // TODO Throw EclipseLinkEMF Exception - throw new RuntimeException(Messages.exception_errorSettingListOwner); - } - } - - public int getEObjectEListFeatureId(EObjectEList<?> list) { - try { - return eObjectEListFeatureIDField.getInt(list); - } catch (Exception e) { - // TODO Throw EclipseLinkEMF Exception - throw new RuntimeException(Messages.exception_errorGettingFeatureID); - } - } -} |