001 /* 002 * Copyright (c) 2007-2015 Concurrent, Inc. All Rights Reserved. 003 * 004 * Project and contact information: http://www.cascading.org/ 005 * 006 * This file is part of the Cascading project. 007 * 008 * Licensed under the Apache License, Version 2.0 (the "License"); 009 * you may not use this file except in compliance with the License. 010 * You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, software 015 * distributed under the License is distributed on an "AS IS" BASIS, 016 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 017 * See the License for the specific language governing permissions and 018 * limitations under the License. 019 */ 020 021 package cascading.operation; 022 023 import cascading.tuple.Fields; 024 025 public interface OperationCall<Context> 026 { 027 /** 028 * Returns the user set context object, C. 029 * 030 * @return user defined object 031 */ 032 Context getContext(); 033 034 /** 035 * Sets the user defined 'context' object. 036 * 037 * @param context user defined object 038 */ 039 void setContext( Context context ); 040 041 /** 042 * Returns the {@link Fields} of the expected arguments {@link cascading.tuple.TupleEntry}. 043 * 044 * @return the argumentFields (type Fields) of this OperationCall object. 045 */ 046 Fields getArgumentFields(); 047 }