/***********************************************************************************************************************
* 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.common.functions;
/**
* The execution context provides basic information about the parallel runtime context
* in which a stub instance lives. Such information includes the current number of
* parallel stub instances, the stub's parallel task index, the pact name, or the iteration context.
*/
public interface ExecutionContext {
/**
* Gets the name of the task. This is the name supplied to the contract upon instantiation. If
* no name was given at contract instantiation time, a default name will be returned.
*
* @return The task's name.
*/
String getTaskName();
/**
* Gets the number of parallel subtasks in which the stub is executed.
*
* @return The number of parallel subtasks in which the stub is executed.
*/
int getNumberOfSubtasks();
/**
* Gets the subtask's parallel task number.
*
* @return The subtask's parallel task number.
*/
int getSubtaskIndex();
}