/*
* 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.core.progmodel.facets.properties.event;
import java.lang.reflect.Method;
import java.util.Comparator;
import java.util.List;
import org.apache.isis.applib.annotation.PostsPropertyChangedEvent;
import org.apache.isis.applib.services.eventbus.PropertyChangedEvent;
import org.apache.isis.core.commons.config.IsisConfiguration;
import org.apache.isis.core.metamodel.adapter.ServicesProvider;
import org.apache.isis.core.metamodel.adapter.ServicesProviderAware;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facetapi.FacetUtil;
import org.apache.isis.core.metamodel.facetapi.FeatureType;
import org.apache.isis.core.metamodel.facetapi.MetaModelValidatorRefiner;
import org.apache.isis.core.metamodel.facets.Annotations;
import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
import org.apache.isis.core.metamodel.facets.accessor.PropertyOrCollectionAccessorFacet;
import org.apache.isis.core.metamodel.facets.collections.sortedby.SortedByFacet;
import org.apache.isis.core.metamodel.facets.properties.event.PostsPropertyChangedEventFacet;
import org.apache.isis.core.metamodel.facets.properties.modify.PropertyClearFacet;
import org.apache.isis.core.metamodel.facets.properties.modify.PropertySetterFacet;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
import org.apache.isis.core.metamodel.spec.feature.Contributed;
import org.apache.isis.core.metamodel.spec.feature.OneToManyAssociation;
import org.apache.isis.core.metamodel.specloader.validator.MetaModelValidatorComposite;
import org.apache.isis.core.metamodel.specloader.validator.MetaModelValidatorVisiting;
import org.apache.isis.core.metamodel.specloader.validator.MetaModelValidatorVisiting.Visitor;
import org.apache.isis.core.metamodel.specloader.validator.ValidationFailures;
public class PostsPropertyChangedEventAnnotationFacetFactory extends FacetFactoryAbstract implements ServicesProviderAware, MetaModelValidatorRefiner {
private ServicesProvider servicesProvider;
public PostsPropertyChangedEventAnnotationFacetFactory() {
super(FeatureType.PROPERTIES_ONLY);
}
@Override
public void process(final ProcessMethodContext processMethodContext) {
final Method method = processMethodContext.getMethod();
FacetUtil.addFacet(create(method, processMethodContext.getFacetHolder()));
}
private PostsPropertyChangedEventFacet create(Method method, final FacetHolder holder) {
final PostsPropertyChangedEvent annotation = Annotations.getAnnotation(method, PostsPropertyChangedEvent.class);
if(annotation == null) {
return null;
}
final PropertyOrCollectionAccessorFacet getterFacet = holder.getFacet(PropertyOrCollectionAccessorFacet.class);
if(getterFacet == null) {
return null;
}
final PropertyClearFacet clearFacet = holder.getFacet(PropertyClearFacet.class);
final PropertySetterFacet setterFacet = holder.getFacet(PropertySetterFacet.class);
if (clearFacet == null && setterFacet == null) {
return null;
}
if(setterFacet != null) {
holder.removeFacet(setterFacet);
}
if(clearFacet != null) {
holder.removeFacet(clearFacet);
}
final Class<? extends PropertyChangedEvent<?, ?>> changedEventType = annotation.value();
return new PostsPropertyChangedEventFacetAnnotation(changedEventType, getterFacet, setterFacet, clearFacet, servicesProvider, holder);
}
@Override
public void setServicesProvider(ServicesProvider servicesProvider) {
this.servicesProvider = servicesProvider;
}
@Override
public void refineMetaModelValidator(MetaModelValidatorComposite metaModelValidator, IsisConfiguration configuration) {
metaModelValidator.add(new MetaModelValidatorVisiting(newValidatorVisitor()));
}
protected Visitor newValidatorVisitor() {
return new MetaModelValidatorVisiting.Visitor() {
@Override
public boolean visit(ObjectSpecification objectSpec, ValidationFailures validationFailures) {
List<OneToManyAssociation> objectCollections = objectSpec.getCollections(Contributed.EXCLUDED);
for (OneToManyAssociation objectCollection : objectCollections) {
final SortedByFacet facet = objectCollection.getFacet(SortedByFacet.class);
if(facet != null) {
final Class<? extends Comparator<?>> cls = facet.value();
if(!Comparator.class.isAssignableFrom(cls)) {
validationFailures.add("%s#%s is annotated with @SortedBy, but the class specified '%s' is not a Comparator", objectSpec.getIdentifier().getClassName(), objectCollection.getId(), facet.value().getName());
}
}
}
return true;
}
};
}
}