core/src/main/java/org/apache/commons/digester3/binder/AddAliasBuilder.java

package org.apache.commons.digester3.binder;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.util.Map;

/**
 * @since 3.2
 * @param <B> the parent builder type.
 */
public final class AddAliasBuilder<B>
{

    private final B parentBuilder;

    private final Map<String, String> aliases;

    private final String alias;

    AddAliasBuilder( B parentBuilder, Map<String, String> aliases, String alias )
    {
        this.parentBuilder = parentBuilder;
        this.aliases = aliases;
        this.alias = alias;
    }

    /**
     * Allows expressing the input property name alias.
     *
     * @param propertyName The java bean property to be assigned the value
     * @return the parent builder to chain.
     */
    public B forProperty( /*@Nullable*/ String propertyName )
    {
        if ( alias != null )
        {
            aliases.put( alias, propertyName );
        }
        return parentBuilder;
    }

}