001 /* 002 // $Id: DimensionType.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 * The type of an expression which represents a Dimension. 026 * 027 * @author jhyde 028 * @since Feb 17, 2005 029 * @version $Id: DimensionType.java 482 2012-01-05 23:27:27Z jhyde $ 030 */ 031 public class DimensionType implements Type { 032 private final Dimension dimension; 033 private final String digest; 034 035 public static final DimensionType Unknown = new DimensionType(null); 036 037 /** 038 * Creates a type representing a dimension. 039 * 040 * @param dimension Dimension which values of this type must belong to, or 041 * null if not known 042 */ 043 public DimensionType(Dimension dimension) { 044 this.dimension = dimension; 045 StringBuilder buf = new StringBuilder("DimensionType<"); 046 if (dimension != null) { 047 buf.append("dimension=").append(dimension.getUniqueName()); 048 } 049 buf.append(">"); 050 this.digest = buf.toString(); 051 } 052 053 public boolean usesDimension(Dimension dimension, boolean maybe) { 054 if (this.dimension == null) { 055 return maybe; 056 } else { 057 return this.dimension.equals(dimension); 058 } 059 } 060 061 public Hierarchy getHierarchy() { 062 return dimension == null 063 ? null 064 : dimension.getHierarchies().size() > 1 065 ? null 066 : dimension.getHierarchies().get(0); 067 } 068 069 public Level getLevel() { 070 return null; 071 } 072 073 public Dimension getDimension() { 074 return dimension; 075 } 076 077 public String toString() { 078 return digest; 079 } 080 } 081 082 // End DimensionType.java