/*
* 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.extensionTypes;
import com.google.common.base.Strings;
import org.terasology.utilities.Assets;
import org.terasology.assets.Asset;
import org.terasology.persistence.typeHandling.StringRepresentationTypeHandler;
import java.util.Optional;
/**
*/
public class AssetTypeHandler<T extends Asset> extends StringRepresentationTypeHandler<T> {
private Class<T> assetClass;
public AssetTypeHandler(Class<T> assetClass) {
this.assetClass = assetClass;
}
@Override
public String getAsString(T item) {
if (item == null) {
return "";
}
return item.getUrn().toString();
}
@Override
public T getFromString(String representation) {
if (Strings.isNullOrEmpty(representation)) {
return null;
}
Optional<T> asset = Assets.get(representation, assetClass);
if (asset.isPresent()) {
return assetClass.cast(asset.get());
}
return null;
}
}