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.lang.StringExtensions;
027import org.apache.isis.core.metamodel.facetapi.FacetHolder;
028import org.apache.isis.core.metamodel.runtimecontext.ServicesInjector;
029import org.apache.isis.core.progmodel.facets.object.defaults.DefaultedFacetAbstract;
030import org.apache.isis.core.progmodel.facets.object.defaults.DefaultsProviderUtil;
031
032public class DefaultedFacetAnnotation extends DefaultedFacetAbstract {
033
034    private static String providerName(final Class<?> annotatedClass, final IsisConfiguration configuration) {
035        final Defaulted annotation = annotatedClass.getAnnotation(Defaulted.class);
036        final String providerName = annotation.defaultsProviderName();
037        if (!Strings.isNullOrEmpty(providerName)) {
038            return providerName;
039        }
040        return DefaultsProviderUtil.defaultsProviderNameFromConfiguration(annotatedClass, configuration);
041    }
042
043    private static Class<?> providerClass(final Class<?> annotatedClass) {
044        final Defaulted annotation = annotatedClass.getAnnotation(Defaulted.class);
045        return annotation.defaultsProviderClass();
046    }
047
048    public DefaultedFacetAnnotation(final Class<?> annotatedClass, final IsisConfiguration configuration, final FacetHolder holder, final ServicesInjector dependencyInjector) {
049        this(providerName(annotatedClass, configuration), providerClass(annotatedClass), holder, dependencyInjector);
050    }
051
052    private DefaultedFacetAnnotation(final String candidateProviderName, final Class<?> candidateProviderClass, final FacetHolder holder, final ServicesInjector dependencyInjector) {
053        super(candidateProviderName, candidateProviderClass, holder, dependencyInjector);
054    }
055
056}