/***********************************************************************************************************************
*
* Copyright (C) 2010-2013 by the Stratosphere project (http://stratosphere.eu)
*
* 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 eu.stratosphere.api.java.typeutils;
import eu.stratosphere.types.TypeInformation;
/**
* This interface can be implemented by functions and input formats to tell the framework
* about their produced data type. This method acts as an alternative to the reflection analysis
* that is otherwise performed and is useful in situations where the produced data type may vary
* depending on parameterization.
*/
public interface ResultTypeQueryable<T> {
/**
* Gets the data type (as a {@link TypeInformation}) produced by this function or input format.
*
* @return The data type produced by this function or input format.
*/
TypeInformation<T> getProducedType();
}