Author: sohil.shah(a)jboss.com Date: 2008-01-03 11:49:45 -0500 (Thu, 03 Jan 2008) New Revision: 9427 Removed: branches/presentation/presentation/src/main/org/jboss/portal/presentation/impl/model/container/AssociationContext.java Log: deleting AssociationContext from codebase Deleted: branches/presentation/presentation/src/main/org/jboss/portal/presentation/impl/model/container/AssociationContext.java =================================================================== --- branches/presentation/presentation/src/main/org/jboss/portal/presentation/impl/model/container/AssociationContext.java 2008-01-03 13:51:51 UTC (rev 9426) +++ branches/presentation/presentation/src/main/org/jboss/portal/presentation/impl/model/container/AssociationContext.java 2008-01-03 16:49:45 UTC (rev 9427) @@ -1,568 +0,0 @@ -/****************************************************************************** - * JBoss, a division of Red Hat * - * Copyright 2006, Red Hat Middleware, LLC, and individual * - * contributors as indicated by the @authors tag. See the * - * copyright.txt in the distribution for a full listing of * - * individual contributors. * - * * - * This is free software; you can redistribute it and/or modify it * - * under the terms of the GNU Lesser General Public License as * - * published by the Free Software Foundation; either version 2.1 of * - * the License, or (at your option) any later version. * - * * - * This software 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 software; if not, write to the Free * - * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * - * 02110-1301 USA, or see the FSF site: http://www.fsf.org. * - ******************************************************************************/ -package org.jboss.portal.presentation.impl.model.container; - -import org.jboss.portal.presentation.impl.model.container.spi.UIContainerObject; -import org.jboss.portal.presentation.model.state.structural.StructuralObject; -import org.jboss.portal.presentation.model.state.StateException; -import org.jboss.portal.presentation.model.UIObject; - -import java.util.Iterator; -import java.util.Set; -import java.util.HashSet; -import java.util.Collection; -import java.util.AbstractSet; -import java.util.ArrayList; - -/** - * @author <a href="mailto:julien@jboss.org">Julien Viet</a> - * @version $Revision: 630 $ - */ -final class AssociationContext -{ - - /** . */ - ObjectContext owner; - - /** . */ - final ManyToOne parent = new ManyToOne() - { - protected StructuralObject doLoad() - { - return owner.container.structuralStateContext.loadParent(owner.structuralObject); - } - protected ObjectContext getOwner() - { - return owner; - } - protected OneToMany getOneToMany(UIContainerObject related) - { - return ((ObjectContext)related.getContext()).associationContext.children; - } - }; - - /** . */ - final OneToMany children = new OneToMany() - { - protected Collection<StructuralObject> doLoad() - { - return owner.container.structuralStateContext.loadChildren(owner.structuralObject); - } - protected ObjectContext getOwner() - { - return owner; - } - protected ManyToOne getManyToOne(UIContainerObject related) - { - return ((ObjectContext)related.getContext()).associationContext.parent; - } - }; - - static abstract class ManyToOne - { - - /** . */ - private boolean loaded; - - /** . */ - private UIContainerObject related; - - /** The context pointing at us via a OneToMany. */ - private Set<ObjectContext> refs; - - private ManyToOne() - { - this.loaded = false; - this.related = null; - this.refs = new HashSet<ObjectContext>(); - } - - Set<ObjectContext> getReferences() - { - return refs; - } - - boolean isLoaded() - { - return loaded; - } - - void setLoadedRelated(UIContainerObject newParent) - { - if (newParent == null) - { - throw new IllegalArgumentException(); - } - if (!loaded) - { - throw new IllegalStateException("Cannot set parent of non loaded association"); - } - - // Downgrade the related side - if (related != null) - { - detach(); - } - - // - if (newParent != null) - { - attach(newParent); - } - else - { - related = null; - loaded = false; - } - } - - UIContainerObject getLoadedRelated() - { - if (!loaded) - { - throw new IllegalStateException("Cannot set parent of non loaded association"); - } - return related; - } - - void clearLoadedRelated() - { - if (!loaded) - { - throw new IllegalStateException("Cannot clear parent of non loaded association"); - } - - // Downgrade realted - detach(); - - // - loaded = false; - } - - UIContainerObject getRelated() - { - ObjectContext owner = getOwner(); - - // - owner.checkAccess(); - - // - if (!loaded) - { - load(); - } - - // - owner.checkAccess(); - - // - return related; - } - - /** - * Loads the related side. - * - * @return the loaded structural object - * @throws StateException if the load operation cannot be achieved - */ - protected abstract StructuralObject doLoad() throws StateException; - - protected abstract ObjectContext getOwner(); - - protected abstract OneToMany getOneToMany(UIContainerObject related); - - private void attach(UIContainerObject related) - { - if (this.related != null) - { - throw new AssertionError("BUG"); - } - - // - OneToMany oneToMany = getOneToMany(related); - ObjectContext owner = getOwner(); - - // - if (oneToMany.refs.contains(owner)) - { - throw new AssertionError("BUG"); - } - - // - oneToMany.refs.add(owner); - this.related = related; - } - - private void detach() - { - if (related == null) - { - throw new AssertionError("BUG"); - } - - // - OneToMany oneToMany = getOneToMany(related); - ObjectContext owner = getOwner(); - - // - if (!oneToMany.refs.contains(owner)) - { - throw new AssertionError("BUG"); - } - - // - oneToMany.refs.remove(owner); - this.related = null; - } - - /** - * Attempt for loading the related side. If a failure occurs during while loading the related side - * the load operation is aborted and the status of the association owner is updated accordingly. If the loading - * of the related side is succesful the association is updated. - */ - private void load() - { - ObjectContext owner = getOwner(); - - // - try - { - StructuralObject relatedSO = doLoad(); - - // If null it is the root so nothing is done - if (relatedSO != null) - { - UIContainerObject related = owner.container.get(relatedSO); - - // - if (related != null) - { - attach(related); - - // - ObjectContext parentContext = (ObjectContext)related.getContext(); - - // - if (!relatedSO.compareTo(parentContext.structuralObject)) - { - parentContext.status = UIObject.Status.STALE; - } - } - else - { - related = owner.container.create(relatedSO); - - // - owner.container.attach(related); - - // - attach(related); - } - } - - // Set as loaded - this.loaded = true; - } - catch (StateException e) - { - owner.updateStatus(e); - } - } - } - - static abstract class OneToMany - { - - /** . */ - private final LazySet list; - - /** . */ - private boolean loaded; - - /** . */ - private Set<UIContainerObject> relateds; - - /** The contexts pointing at us via a ManyToOne. */ - private Set<ObjectContext> refs; - - private OneToMany() - { - this.list = new LazySet(); - this.loaded = false; - this.relateds = new HashSet<UIContainerObject>(); - this.refs = new HashSet<ObjectContext>(); - } - - boolean isLoaded() - { - return loaded; - } - - void addLoadedRelated(UIContainerObject related) - { - if (!isLoaded()) - { - throw new IllegalStateException("Not loaded"); - } - if (related == null) - { - throw new IllegalArgumentException("No null child accepted"); - } - - // - for (UIContainerObject r : relateds) - { - if (related.getId().equals(r.getId())) - { - throw new IllegalStateException("Cannot add duplicate"); - } - } - - // - attach(related); - } - - void setLoadedRelateds(Set<UIContainerObject> relateds) - { - if (!isLoaded()) - { - throw new IllegalStateException("Not loaded"); - } - - // - for (UIContainerObject related : new ArrayList<UIContainerObject>(this.relateds)) - { - detach(related); - } - - // - for (UIContainerObject related : relateds) - { - attach(related); - } - } - - UIContainerObject removeLoadedRelated(String relatedId) - { - if (!isLoaded()) - { - throw new IllegalStateException("Not loaded"); - } - if (relatedId == null) - { - throw new IllegalArgumentException(); - } - - // - for (UIContainerObject related : relateds) - { - if (relatedId.equals(related.getId())) - { - detach(related); - return related; - } - } - - // - throw new AssertionError("BUG"); - } - - Collection<UIContainerObject> getRelateds() - { - return list; - } - - Set<ObjectContext> getReferences() - { - return refs; - } - - /** - * Load the related side. - * - * @return the list of structural objects - * @throws StateException if the load operation cannot be achieved - */ - protected abstract Collection<StructuralObject> doLoad() throws StateException; - - protected abstract ObjectContext getOwner(); - - protected abstract ManyToOne getManyToOne(UIContainerObject related); - - private void detach(UIContainerObject related) - { - ManyToOne manyToOne = getManyToOne(related); - - // - ObjectContext owner = getOwner(); - - // - if (!manyToOne.refs.contains(owner)) - { - throw new AssertionError("BUG"); - } - - // - manyToOne.refs.remove(owner); - relateds.remove(related); - } - - private void attach(UIContainerObject related) - { - ManyToOne manyToOne = getManyToOne(related); - - // - ObjectContext owner = getOwner(); - - // - if (manyToOne.refs.contains(owner)) - { - throw new AssertionError("Context already referenced by the provided object"); - } - - // - manyToOne.refs.add(owner); - relateds.add(related); - } - - private void load() - { - ObjectContext owner = getOwner(); - - // - try - { - for (StructuralObject relatedSO : doLoad()) - { - UIContainerObject related = owner.container.get(relatedSO); - - // - if (related != null) - { - ObjectContext relatedContext = (ObjectContext)related.getContext(); - - // - if (!relatedContext.structuralObject.compareTo(relatedSO)) - { - relatedContext.status = UIObject.Status.STALE; - } - } - else - { - related = owner.container.create(relatedSO); - - // - owner.container.attach(related); - } - - // - attach(related); - } - - // - this.loaded = true; - } - catch (StateException e) - { - owner.updateStatus(e); - } - } - - private class LazySet extends AbstractSet<UIContainerObject> - { - - public Iterator<UIContainerObject> iterator() - { - final ObjectContext owner = getOwner(); - - // - owner.checkAccess(); - - // Load the entire relationship - if (!isLoaded()) - { - load(); - } - - // - owner.checkAccess(); - - // - final Iterator<UIContainerObject> iterator = relateds.iterator(); - - // - return new Iterator<UIContainerObject>() - { - public boolean hasNext() - { - owner.checkAccess(); - - // - return iterator.hasNext(); - } - - public UIContainerObject next() - { - owner.checkAccess(); - - // - return iterator.next(); - } - - public void remove() - { - owner.checkAccess(); - - // - throw new UnsupportedOperationException(); - } - }; - } - - public int size() - { - ObjectContext owner = getOwner(); - - // - owner.checkAccess(); - - // - if (!isLoaded()) - { - load(); - } - - // - owner.checkAccess(); - - // - return relateds.size(); - } - - public String toString() - { - return "ProxyList[" + getOwner() + "]"; - } - } - } -}