001/* 002 * Copyright (c) 2016-2017 Chris K Wensel. 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 021package cascading.nested.core; 022 023import cascading.operation.BaseOperation; 024import cascading.tuple.Fields; 025import cascading.tuple.type.CoercibleType; 026import heretical.pointer.path.NestedPointerCompiler; 027 028/** 029 * 030 */ 031public class NestedBaseOperation<Node, Result, Context> extends BaseOperation<Context> 032 { 033 protected final NestedCoercibleType<Node, Result> nestedCoercibleType; 034 035 public NestedBaseOperation( NestedCoercibleType<Node, Result> nestedCoercibleType ) 036 { 037 this.nestedCoercibleType = nestedCoercibleType; 038 } 039 040 public NestedBaseOperation( NestedCoercibleType<Node, Result> nestedCoercibleType, Fields fieldDeclaration ) 041 { 042 super( fieldDeclaration.hasTypes() ? fieldDeclaration : fieldDeclaration.applyTypeToAll( nestedCoercibleType ) ); 043 this.nestedCoercibleType = nestedCoercibleType; 044 } 045 046 public NestedBaseOperation( NestedCoercibleType<Node, Result> nestedCoercibleType, int numArgs, Fields fieldDeclaration ) 047 { 048 super( numArgs, fieldDeclaration.hasTypes() ? fieldDeclaration : fieldDeclaration.applyTypeToAll( nestedCoercibleType ) ); 049 this.nestedCoercibleType = nestedCoercibleType; 050 } 051 052 protected NestedPointerCompiler<Node, Result> getNestedPointerCompiler() 053 { 054 return nestedCoercibleType.getNestedPointerCompiler(); 055 } 056 057 protected CoercibleType<Node> getCoercibleType() 058 { 059 return nestedCoercibleType; 060 } 061 062 protected Node deepCopy( Node node ) 063 { 064 return nestedCoercibleType.deepCopy( node ); 065 } 066 067 protected Node getRootNode() 068 { 069 return nestedCoercibleType.newRoot(); 070 } 071 072 protected Node getLiteralNode( Object value ) 073 { 074 return nestedCoercibleType.node( value ); 075 } 076 077 protected Iterable<Node> iterable( Result node ) 078 { 079 return nestedCoercibleType.getNestedPointerCompiler().iterable( node ); 080 } 081 }