/*
* Copyright 2013 MovingBlocks
*
* Licensed 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.terasology.persistence.typeHandling.coreTypes;
import com.google.common.collect.Maps;
import org.terasology.persistence.typeHandling.DeserializationContext;
import org.terasology.persistence.typeHandling.PersistedData;
import org.terasology.persistence.typeHandling.SerializationContext;
import org.terasology.persistence.typeHandling.SimpleTypeHandler;
import org.terasology.persistence.typeHandling.TypeHandler;
import java.util.Map;
/**
* @author Immortius <immortius@gmail.com>
*/
public class StringMapTypeHandler<T> extends SimpleTypeHandler<Map<String, T>> {
private TypeHandler<T> contentsHandler;
public StringMapTypeHandler(TypeHandler contentsHandler) {
this.contentsHandler = contentsHandler;
}
@Override
public PersistedData serialize(Map<String, T> value, SerializationContext context) {
Map<String, PersistedData> map = Maps.newLinkedHashMap();
for (Map.Entry<String, T> entry : value.entrySet()) {
PersistedData item = contentsHandler.serialize(entry.getValue(), context);
if (!item.isNull()) {
map.put(entry.getKey(), item);
}
}
return context.create(map);
}
@Override
public Map<String, T> deserialize(PersistedData data, DeserializationContext context) {
Map<String, T> result = Maps.newLinkedHashMap();
if (data.isValueMap()) {
for (Map.Entry<String, PersistedData> item : data.getAsValueMap().entrySet()) {
result.put(item.getKey(), contentsHandler.deserialize(item.getValue(), context));
}
}
return result;
}
}