001 /* 002 * Copyright (c) 2007-2014 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.TupleEntry; 024 025 /** 026 * Interface GroupAssertionCall provides access to the current {@link GroupAssertion} invocation arguments. 027 * <p/> 028 * This interface is generic, allowing the user to set a custom 'context' object when {@link GroupAssertion#start(cascading.flow.FlowProcess, GroupAssertionCall)} 029 * is called. The {@link OperationCall#setContext(Object)} and {@link OperationCall#getContext()} methods are 030 * inherited from {@link OperationCall}. 031 * 032 * @see GroupAssertion 033 * @see OperationCall 034 */ 035 public interface GroupAssertionCall<C> extends OperationCall<C> 036 { 037 /** 038 * Returns the current grouping {@link TupleEntry}. 039 * 040 * @return TupleEntry 041 */ 042 TupleEntry getGroup(); 043 044 /** 045 * Returns {@link TupleEntry} of argument values. 046 * 047 * @return TupleEntry 048 */ 049 TupleEntry getArguments(); 050 }