/*
 * 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.
 */
package org.apache.brooklyn.util.core.xstream;

import org.apache.brooklyn.util.collections.MutableSet;

import com.thoughtworks.xstream.converters.collections.CollectionConverter;
import com.thoughtworks.xstream.mapper.Mapper;

public class MutableSetConverter extends CollectionConverter {

    // Although this class seems pointless (!), without registering an explicit converter for MutableSet then the
    // declaration for Set interferes, causing MutableSet.map field to be null on deserialization.
    
    public MutableSetConverter(Mapper mapper) {
        super(mapper);
    }

    @Override
    public boolean canConvert(@SuppressWarnings("rawtypes") Class type) {
        return MutableSet.class.isAssignableFrom(type);
    }

    @Override
    protected Object createCollection(Class type) {
        return new MutableSet<Object>();
    }
}
