001/*
002 *  Licensed to the Apache Software Foundation (ASF) under one
003 *  or more contributor license agreements.  See the NOTICE file
004 *  distributed with this work for additional information
005 *  regarding copyright ownership.  The ASF licenses this file
006 *  to you under the Apache License, Version 2.0 (the
007 *  "License"); you may not use this file except in compliance
008 *  with the License.  You may obtain a copy of the License at
009 *
010 *        http://www.apache.org/licenses/LICENSE-2.0
011 *
012 *  Unless required by applicable law or agreed to in writing,
013 *  software distributed under the License is distributed on an
014 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 *  KIND, either express or implied.  See the License for the
016 *  specific language governing permissions and limitations
017 *  under the License.
018 */
019
020package org.apache.isis.core.progmodel.facets.object.defaults.annotation;
021
022import com.google.common.base.Strings;
023
024import org.apache.isis.applib.annotation.Defaulted;
025import org.apache.isis.core.commons.config.IsisConfiguration;
026import org.apache.isis.core.commons.config.IsisConfigurationAware;
027import org.apache.isis.core.commons.lang.StringExtensions;
028import org.apache.isis.core.metamodel.facetapi.FacetHolder;
029import org.apache.isis.core.metamodel.facetapi.FacetUtil;
030import org.apache.isis.core.metamodel.facetapi.FeatureType;
031import org.apache.isis.core.metamodel.facets.Annotations;
032import org.apache.isis.core.metamodel.facets.FacetFactoryAbstract;
033import org.apache.isis.core.metamodel.runtimecontext.ServicesInjector;
034import org.apache.isis.core.metamodel.runtimecontext.ServicesInjectorAware;
035import org.apache.isis.core.progmodel.facets.object.defaults.DefaultedFacetAbstract;
036import org.apache.isis.core.progmodel.facets.object.defaults.DefaultsProviderUtil;
037
038public class DefaultedAnnotationFacetFactory extends FacetFactoryAbstract implements IsisConfigurationAware, ServicesInjectorAware {
039
040    private IsisConfiguration configuration;
041    private ServicesInjector servicesInjector;
042
043    public DefaultedAnnotationFacetFactory() {
044        super(FeatureType.OBJECTS_ONLY);
045    }
046
047    @Override
048    public void process(final ProcessClassContext processClassContext) {
049        FacetUtil.addFacet(create(processClassContext.getCls(), processClassContext.getFacetHolder()));
050    }
051
052    private DefaultedFacetAbstract create(final Class<?> cls, final FacetHolder holder) {
053        final Defaulted annotation = Annotations.getAnnotation(cls, Defaulted.class);
054
055        // create from annotation, if present
056        if (annotation != null) {
057            final DefaultedFacetAbstract facet = new DefaultedFacetAnnotation(cls, getIsisConfiguration(), holder, getServicesInjector());
058            if (facet.isValid()) {
059                return facet;
060            }
061        }
062
063        // otherwise, try to create from configuration, if present
064        final String providerName = DefaultsProviderUtil.defaultsProviderNameFromConfiguration(cls, getIsisConfiguration());
065        if (!Strings.isNullOrEmpty(providerName)) {
066            final DefaultedFacetFromConfiguration facet = new DefaultedFacetFromConfiguration(providerName, holder, getServicesInjector());
067            if (facet.isValid()) {
068                return facet;
069            }
070        }
071
072        return null;
073    }
074
075    // ////////////////////////////////////////////////////////////////////
076    // Injected
077    // ////////////////////////////////////////////////////////////////////
078
079    public IsisConfiguration getIsisConfiguration() {
080        return configuration;
081    }
082
083    @Override
084    public void setConfiguration(final IsisConfiguration configuration) {
085        this.configuration = configuration;
086    }
087
088    private ServicesInjector getServicesInjector() {
089        return servicesInjector;
090    }
091
092    @Override
093    public void setServicesInjector(final ServicesInjector dependencyInjector) {
094        this.servicesInjector = dependencyInjector;
095    }
096
097}