/*
* 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.metamodel.facets.properties.defaults.fromtype;
import org.apache.isis.core.metamodel.facetapi.FacetUtil;
import org.apache.isis.core.metamodel.facetapi.FeatureType;
import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
import org.apache.isis.core.metamodel.facets.object.defaults.DefaultedFacet;
import org.apache.isis.core.metamodel.facets.properties.defaults.PropertyDefaultFacet;
import org.apache.isis.core.metamodel.services.ServicesInjector;
import org.apache.isis.core.metamodel.services.persistsession.PersistenceSessionServiceInternal;
import org.apache.isis.core.metamodel.spec.ObjectSpecification;
public class PropertyDefaultFacetDerivedFromTypeFactory extends FacetFactoryAbstract {
public PropertyDefaultFacetDerivedFromTypeFactory() {
super(FeatureType.PROPERTIES_ONLY);
}
/**
* If there is a {@link DefaultedFacet} on the properties return type, then
* installs a {@link PropertyDefaultFacet} for the property with the same
* default.
*/
@Override
public void process(final ProcessMethodContext processMethodContext) {
// don't overwrite any defaults that might already picked up
final PropertyDefaultFacet existingDefaultFacet = processMethodContext.getFacetHolder().getFacet(PropertyDefaultFacet.class);
if (existingDefaultFacet != null && !existingDefaultFacet.isNoop()) {
return;
}
// try to infer defaults from the underlying return type
final Class<?> returnType = processMethodContext.getMethod().getReturnType();
final DefaultedFacet returnTypeDefaultedFacet = getDefaultedFacet(returnType);
if (returnTypeDefaultedFacet != null) {
final PropertyDefaultFacetDerivedFromDefaultedFacet propertyFacet = new PropertyDefaultFacetDerivedFromDefaultedFacet(returnTypeDefaultedFacet, processMethodContext.getFacetHolder(), adapterManager);
FacetUtil.addFacet(propertyFacet);
}
}
private DefaultedFacet getDefaultedFacet(final Class<?> paramType) {
final ObjectSpecification paramTypeSpec = getSpecificationLoader().loadSpecification(paramType);
return paramTypeSpec.getFacet(DefaultedFacet.class);
}
// ////////////////////////////////////////////////////////////////////
// Injected
// ////////////////////////////////////////////////////////////////////
@Override
public void setServicesInjector(final ServicesInjector servicesInjector) {
super.setServicesInjector(servicesInjector);
adapterManager = servicesInjector.getPersistenceSessionServiceInternal();
}
PersistenceSessionServiceInternal adapterManager;
}