Source code

001package org.apache.archiva.metadata.model.facets;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 *   http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import org.apache.archiva.metadata.model.MetadataFacet;
023import org.apache.archiva.metadata.model.MetadataFacetFactory;
024
025/**
026 * @author Martin Stockhammer <martin_s@apache.org>
027 */
028public abstract class AbstractMetadataFacetFactory<T extends MetadataFacet> implements MetadataFacetFactory<T>
029{
030    private final String facetId;
031    private final Class<T> facetClazz;
032
033    protected AbstractMetadataFacetFactory( Class<T> facetClazz, String facetId) {
034        this.facetId = facetId;
035        this.facetClazz = facetClazz;
036    }
037
038    protected AbstractMetadataFacetFactory(Class<T> facetClazz ) {
039        this.facetClazz = facetClazz;
040        try
041        {
042            this.facetId = (String) this.facetClazz.getField( "FACET_ID" ).get(null);
043        }
044        catch ( Throwable e)
045        {
046            throw new RuntimeException( "There is no FACET_ID static public field on the class " + facetClazz );
047        }
048    }
049
050    @Override
051    public abstract T createMetadataFacet( );
052
053    @Override
054    public abstract T createMetadataFacet( String repositoryId, String name );
055
056    @Override
057    public Class<T> getFacetClass( )
058    {
059        return facetClazz;
060    }
061
062    @Override
063    public String getFacetId( )
064    {
065        return facetId;
066    }
067}