001    package org.apache.commons.digester3.binder;
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    
022    import java.util.Map;
023    
024    /**
025     * @since 3.2
026     * @param <B> the parent builder type.
027     */
028    public final class AddAliasBuilder<B>
029    {
030    
031        private final B parentBuilder;
032    
033        private final Map<String, String> aliases;
034    
035        private final String alias;
036    
037        AddAliasBuilder( B parentBuilder, Map<String, String> aliases, String alias )
038        {
039            this.parentBuilder = parentBuilder;
040            this.aliases = aliases;
041            this.alias = alias;
042        }
043    
044        /**
045         * Allows expressing the input property name alias.
046         *
047         * @param propertyName The java bean property to be assigned the value
048         * @return the parent builder to chain.
049         */
050        public B forProperty( /*@Nullable*/ String propertyName )
051        {
052            if ( alias != null )
053            {
054                aliases.put( alias, propertyName );
055            }
056            return parentBuilder;
057        }
058    
059    }