/**
* 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.json.viewer.resources.domainobjects;
import java.util.List;
import java.util.Map;
import com.google.common.collect.Lists;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
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.spec.feature.OneToManyAssociation;
import org.apache.isis.viewer.json.applib.JsonRepresentation;
import org.apache.isis.viewer.json.applib.RepresentationType;
import org.apache.isis.viewer.json.applib.links.Rel;
import org.apache.isis.viewer.json.viewer.ResourceContext;
import org.apache.isis.viewer.json.viewer.representations.LinkBuilder;
import org.apache.isis.viewer.json.viewer.representations.LinkFollower;
import org.apache.isis.viewer.json.viewer.representations.RendererFactory;
import org.apache.isis.viewer.json.viewer.representations.RendererFactoryRegistry;
import org.apache.isis.viewer.json.viewer.representations.ReprRenderer;
import org.apache.isis.viewer.json.viewer.representations.ReprRendererFactoryAbstract;
import org.apache.isis.viewer.json.viewer.resources.domaintypes.CollectionDescriptionReprRenderer;
public class ObjectCollectionReprRenderer extends AbstractObjectMemberReprRenderer<ObjectCollectionReprRenderer, OneToManyAssociation> {
public static class Factory extends ReprRendererFactoryAbstract {
public Factory() {
super(RepresentationType.OBJECT_COLLECTION);
}
@Override
public ReprRenderer<?, ?> newRenderer(final ResourceContext resourceContext, final LinkFollower linkFollower, final JsonRepresentation representation) {
return new ObjectCollectionReprRenderer(resourceContext, linkFollower, getRepresentationType(), representation);
}
}
private ObjectCollectionReprRenderer(final ResourceContext resourceContext, final LinkFollower linkFollower, final RepresentationType representationType, final JsonRepresentation representation) {
super(resourceContext, linkFollower, representationType, representation);
}
@Override
public JsonRepresentation render() {
// id and memberType are rendered eagerly
renderMemberContent();
if (mode.isStandalone() || mode.isMutated() || !objectAdapter.isPersistent()) {
addValue();
}
putDisabledReasonIfDisabled();
if (mode.isStandalone() || mode.isMutated()) {
addExtensionsIsisProprietaryChangedObjects();
}
return representation;
}
// ///////////////////////////////////////////////////
// value
// ///////////////////////////////////////////////////
private void addValue() {
final ObjectAdapter valueAdapter = objectMember.get(objectAdapter);
if (valueAdapter == null) {
return;
}
final CollectionFacet facet = CollectionFacetUtils.getCollectionFacetFromSpec(valueAdapter);
final List<JsonRepresentation> list = Lists.newArrayList();
for (final ObjectAdapter elementAdapter : facet.iterable(valueAdapter)) {
final LinkBuilder newBuilder = DomainObjectReprRenderer.newLinkToBuilder(resourceContext, Rel.OBJECT, elementAdapter);
list.add(newBuilder.build());
}
representation.mapPut("value", list);
}
// ///////////////////////////////////////////////////
// details link
// ///////////////////////////////////////////////////
/**
* Mandatory hook method to support x-ro-follow-links
*/
@Override
protected void followDetailsLink(final JsonRepresentation detailsLink) {
final RendererFactory factory = RendererFactoryRegistry.instance.find(RepresentationType.OBJECT_COLLECTION);
final ObjectCollectionReprRenderer renderer = (ObjectCollectionReprRenderer) factory.newRenderer(getResourceContext(), getLinkFollower(), JsonRepresentation.newMap());
renderer.with(new ObjectAndCollection(objectAdapter, objectMember)).asFollowed();
detailsLink.mapPut("value", renderer.render());
}
// ///////////////////////////////////////////////////
// mutators
// ///////////////////////////////////////////////////
@Override
protected void addMutatorsIfEnabled() {
if (usability().isVetoed()) {
return;
}
final CollectionSemantics semantics = CollectionSemantics.determine(this.resourceContext, objectMember);
addMutatorLink(semantics.getAddToKey());
addMutatorLink(semantics.getRemoveFromKey());
return;
}
private void addMutatorLink(final String key) {
final Map<String, MutatorSpec> mutators = memberType.getMutators();
final MutatorSpec mutatorSpec = mutators.get(key);
addLinkFor(mutatorSpec);
}
// ///////////////////////////////////////////////////
// extensions and links
// ///////////////////////////////////////////////////
@Override
protected void addLinksToFormalDomainModel() {
final LinkBuilder linkBuilder = CollectionDescriptionReprRenderer.newLinkToBuilder(resourceContext, Rel.DESCRIBEDBY, objectAdapter.getSpecification(), objectMember);
getLinks().arrayAdd(linkBuilder.build());
}
@Override
protected void addLinksIsisProprietary() {
// none
}
@Override
protected void putExtensionsIsisProprietary() {
final CollectionSemantics semantics = CollectionSemantics.determine(resourceContext, objectMember);
getExtensions().mapPut("collectionSemantics", semantics.name().toLowerCase());
}
}