001 /* 002 // $Id: HierarchyType.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.OlapException; 023 import org.olap4j.metadata.*; 024 025 /** 026 * The type of an expression which represents a hierarchy. 027 * 028 * @author jhyde 029 * @since Feb 17, 2005 030 * @version $Id: HierarchyType.java 482 2012-01-05 23:27:27Z jhyde $ 031 */ 032 public class HierarchyType implements Type { 033 private final Dimension dimension; 034 private final Hierarchy hierarchy; 035 private final String digest; 036 037 /** 038 * Creates a type representing a hierarchy. 039 * 040 * @param dimension Dimension which values of this type must belong to, or 041 * null if not known 042 * 043 * @param hierarchy Hierarchy which values of this type must belong to, or 044 * null if not known 045 */ 046 public HierarchyType( 047 Dimension dimension, 048 Hierarchy hierarchy) 049 { 050 this.dimension = dimension; 051 this.hierarchy = hierarchy; 052 StringBuilder buf = new StringBuilder("HierarchyType<"); 053 if (hierarchy != null) { 054 buf.append("hierarchy=").append(hierarchy.getUniqueName()); 055 } else if (dimension != null) { 056 buf.append("dimension=").append(dimension.getUniqueName()); 057 } 058 buf.append(">"); 059 this.digest = buf.toString(); 060 } 061 062 // not part of public olap4j API 063 private static HierarchyType forType(Type type) throws OlapException { 064 return new HierarchyType(type.getDimension(), type.getHierarchy()); 065 } 066 067 public boolean usesDimension(Dimension dimension, boolean maybe) { 068 if (this.dimension == null) { 069 return maybe; 070 } else { 071 return this.dimension.equals(dimension); 072 } 073 } 074 075 public Dimension getDimension() { 076 return dimension; 077 } 078 079 public Hierarchy getHierarchy() { 080 return hierarchy; 081 } 082 083 public Level getLevel() { 084 return null; 085 } 086 087 public String toString() { 088 return digest; 089 } 090 } 091 092 // End HierarchyType.java