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.assertion; 022 023 import java.beans.ConstructorProperties; 024 025 import cascading.management.annotation.Property; 026 import cascading.management.annotation.PropertyDescription; 027 import cascading.management.annotation.Visibility; 028 029 /** 030 * Class AssertGroupSizeEquals is an {@link cascading.operation.GroupAssertion} that asserts the number of items in the current group 031 * is equal the given size. 032 * </p> 033 * If a patternString is given, only grouping keys that match the regular expression will have this assertion applied. 034 * Note multiple key values will be delimited by a tab character. 035 */ 036 public class AssertGroupSizeEquals extends AssertGroupBase 037 { 038 039 /** 040 * Constructor AssertGroupSizeEquals creates a new AssertGroupSizeEquals instance. 041 * 042 * @param size of type long 043 */ 044 @ConstructorProperties({"size"}) 045 public AssertGroupSizeEquals( long size ) 046 { 047 super( "group size: %s, is not equal to: %s, in group %s: %s", size ); 048 } 049 050 /** 051 * Constructor AssertGroupSizeEquals creates a new AssertGroupSizeEquals instance. 052 * 053 * @param patternString of type String 054 * @param size of type long 055 */ 056 @ConstructorProperties({"patternString", "size"}) 057 public AssertGroupSizeEquals( String patternString, long size ) 058 { 059 super( "group matching '%s' with size: %s, is not equal to: %s, in group %s: %s", patternString, size ); 060 } 061 062 @Property(name = "size", visibility = Visibility.PRIVATE) 063 @PropertyDescription("The expected group size.") 064 @Override 065 public long getSize() 066 { 067 return super.getSize(); 068 } 069 070 @Override 071 protected boolean assertFails( Long groupSize ) 072 { 073 return groupSize != size; 074 } 075 }