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    
020    package org.apache.isis.core.progmodel.facets.object.maxlen.annotation;
021    
022    import org.apache.isis.applib.annotation.MaxLength;
023    import org.apache.isis.core.metamodel.facetapi.FacetHolder;
024    import org.apache.isis.core.metamodel.facetapi.FacetUtil;
025    import org.apache.isis.core.metamodel.facetapi.FeatureType;
026    import org.apache.isis.core.metamodel.facets.AnnotationBasedFacetFactoryAbstract;
027    import org.apache.isis.core.metamodel.facets.maxlen.MaxLengthFacet;
028    
029    public class MaxLengthAnnotationForTypeFacetFactory extends AnnotationBasedFacetFactoryAbstract {
030    
031        public MaxLengthAnnotationForTypeFacetFactory() {
032            super(FeatureType.OBJECTS_ONLY);
033        }
034    
035        /**
036         * In readiness for supporting <tt>@Value</tt> in the future.
037         */
038        @Override
039        public void process(final ProcessClassContext processClassContaxt) {
040            final MaxLength annotation = getAnnotation(processClassContaxt.getCls(), MaxLength.class);
041            FacetUtil.addFacet(create(annotation, processClassContaxt.getFacetHolder()));
042        }
043    
044        private MaxLengthFacet create(final MaxLength annotation, final FacetHolder holder) {
045            return annotation == null ? null : new MaxLengthFacetAnnotationForType(annotation.value(), holder);
046        }
047    }