001 /* 002 // $Id: SetType.java 482 2012-01-05 23:27:27Z jhyde $ 003 // 004 // Licensed to Julian Hyde under one or more contributor license 005 // agreements. See the NOTICE file distributed with this work for 006 // additional information regarding copyright ownership. 007 // 008 // Julian Hyde licenses this file to you under the Apache License, 009 // Version 2.0 (the "License"); you may not use this file except in 010 // compliance with the License. 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 package org.olap4j.type; 021 022 import org.olap4j.metadata.*; 023 024 /** 025 * Set type. 026 * 027 * @author jhyde 028 * @since Feb 17, 2005 029 * @version $Id: SetType.java 482 2012-01-05 23:27:27Z jhyde $ 030 */ 031 public class SetType implements Type { 032 033 private final Type elementType; 034 035 /** 036 * Creates a type representing a set of elements of a given type. 037 * 038 * @param elementType The type of the elements in the set, or null if not 039 * known 040 */ 041 public SetType(Type elementType) { 042 assert elementType instanceof MemberType 043 || elementType instanceof TupleType; 044 this.elementType = elementType; 045 } 046 047 /** 048 * Returns the type of the elements of this set. 049 * 050 * @return element type 051 */ 052 public Type getElementType() { 053 return elementType; 054 } 055 056 public boolean usesDimension(Dimension dimension, boolean maybe) { 057 if (elementType == null) { 058 return maybe; 059 } 060 return elementType.usesDimension(dimension, maybe); 061 } 062 063 public Dimension getDimension() { 064 return elementType == null 065 ? null 066 : elementType.getDimension(); 067 } 068 069 public Hierarchy getHierarchy() { 070 return elementType == null 071 ? null 072 : elementType.getHierarchy(); 073 } 074 075 public Level getLevel() { 076 return elementType == null 077 ? null 078 : elementType.getLevel(); 079 } 080 } 081 082 // End SetType.java