/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.isis.viewer.html.context;
import java.util.Iterator;
import java.util.List;
import com.google.common.collect.Lists;
import org.apache.isis.core.commons.debug.DebugBuilder;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.adapter.mgr.AdapterManager;
import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacet;
import org.apache.isis.core.metamodel.facets.collections.modify.CollectionFacetUtils;
import org.apache.isis.core.metamodel.facets.typeof.TypeOfFacet;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
import org.apache.isis.core.runtime.system.context.IsisContext;
import org.apache.isis.core.runtime.system.persistence.PersistenceSession;
/**
* Has value semantics based on the value semantics of the underlying list that
* it wraps.
*/
public class CollectionMapping implements Iterable<String> {
private final List<String> list = Lists.newArrayList();
private final ObjectSpecification elementSpecification;
public CollectionMapping(final Context context, final ObjectAdapter collection) {
final TypeOfFacet typeOfFacet = collection.getSpecification().getFacet(TypeOfFacet.class);
elementSpecification = typeOfFacet.valueSpec();
final CollectionFacet collectionFacet = CollectionFacetUtils.getCollectionFacetFromSpec(collection);
for (ObjectAdapter element : collectionFacet.iterable(collection)) {
final String objectId = context.mapObject(element);
list.add(objectId);
}
}
public ObjectAdapter getCollection(final Context context) {
final List<Object> elementPojos = Lists.newArrayList();
for (String elementId : list) {
final ObjectAdapter adapter = context.getMappedObject(elementId);
final Object pojo = adapter.getObject();
elementPojos.add(pojo);
}
return getAdapterManager().adapterFor(elementPojos);
}
public ObjectSpecification getElementSpecification() {
return elementSpecification;
}
public Iterator<String> iterator() {
return list.iterator();
}
public boolean contains(final String id) {
for (String elementId : list) {
if (elementId.equals(id)) {
return true;
}
}
return false;
}
public void remove(final String existingId) {
for (final String elementId: list) {
if (elementId.equals(existingId)) {
list.remove(existingId);
break;
}
}
}
// //////////////////////////////////////////////////////
// debugging
// //////////////////////////////////////////////////////
public void debug(final DebugBuilder debug) {
debug.indent();
for (String elementId : list) {
debug.appendln(elementId);
}
debug.unindent();
}
// //////////////////////////////////////////////////////
// equals, hashCode
// //////////////////////////////////////////////////////
/**
* Value semantics based on the identity of the underlying list that this
* wraps.
*/
@Override
public int hashCode() {
return list.hashCode();
}
@Override
public boolean equals(final Object other) {
if (other == this) {
return true;
}
if (other == null) {
return false;
}
if (other.getClass() != this.getClass()) {
return false;
}
return equals((CollectionMapping) other);
}
public boolean equals(final CollectionMapping other) {
return this.list.equals(other.list);
}
// //////////////////////////////////////////////////////
// Dependencies (from context)
// //////////////////////////////////////////////////////
private static AdapterManager getAdapterManager() {
return getPersistenceSession().getAdapterManager();
}
private static PersistenceSession getPersistenceSession() {
return IsisContext.getPersistenceSession();
}
}