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/*
* 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.tuscany.sca.databinding;
/**
* A transformer provides the data transformation from source type to target type. The cost of the transformation is
* modelled as weight.
*
* @version $Rev$ $Date$
*/
public interface Transformer {
/**
* Get the source type that this transformer transforms data from. The type is used as the key when the transformer
* is registered with TransformerRegistry.
*
* @return A key identifying the source type
*/
String getSourceDataBinding();
/**
* Get the target type that this transformer transforms data into. The type is used as the key when the transformer
* is registered with TransformerRegistry.
*
* @return A key identifying the target type
*/
String getTargetDataBinding();
/**
* Get the cost of the transformation. The weight can be used to choose the most efficient path if there are more
* than one available from the source to the target.
*
* @return An integer representing the cost of the transformation
*/
int getWeight();
}
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