/src/solidstack/query/ValuesMap.java
Java | 118 lines | 74 code | 18 blank | 26 comment | 5 complexity | 8a5d9bc5ff4380967d9d652a2a1169ce MD5 | raw file
Possible License(s): Apache-2.0
1/*-- 2 * Copyright 2010 René M. de Bloois 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package solidstack.query; 18 19import java.io.Serializable; 20import java.util.Collection; 21import java.util.Map; 22import java.util.Set; 23 24import solidstack.util.ObjectArrayList; 25 26/** 27 * Decorates an {@link Object} array to let it look like a {@link Map}. 28 * 29 * @author René M. de Bloois 30 */ 31public class ValuesMap implements Map< String, Object >, Serializable 32{ 33 private static final long serialVersionUID = 1L; 34 35 private Map< String, Integer > names; // This one is shared by all instances 36 private Object[] values; 37 38 /** 39 * Constructor. 40 * 41 * @param names The names and indexes of the elements in the {@link Object} array. 42 * @param values The values. 43 */ 44 public ValuesMap( Map< String, Integer > names, Object[] values ) 45 { 46 this.names = names; 47 this.values = values; 48 } 49 50 public int size() 51 { 52 return this.values.length; 53 } 54 55 public boolean isEmpty() 56 { 57 return this.values.length == 0; 58 } 59 60 public boolean containsKey( Object key ) 61 { 62 if( !( key instanceof String ) ) 63 throw new IllegalArgumentException( "Expecting a string" ); 64 String k = ( (String)key ).toLowerCase(); 65 return this.names.containsKey( k ); 66 } 67 68 public Object get( Object key ) 69 { 70 if( !( key instanceof String ) ) 71 throw new IllegalArgumentException( "Expecting a string" ); 72 String k = ( (String)key ).toLowerCase(); 73 Integer index = this.names.get( k ); 74 if( index == null ) 75 throw new IllegalArgumentException( "Unknown column name: " + key ); 76 return this.values[ index ]; 77 } 78 79 public Set< String > keySet() 80 { 81 return this.names.keySet(); 82 } 83 84 public Collection< Object > values() 85 { 86 return new ObjectArrayList( this.values ); 87 } 88 89 public boolean containsValue( Object value ) 90 { 91 throw new UnsupportedOperationException(); 92 } 93 94 public Object put( String key, Object value ) 95 { 96 throw new UnsupportedOperationException(); 97 } 98 99 public Object remove( Object key ) 100 { 101 throw new UnsupportedOperationException(); 102 } 103 104 public void putAll( Map< ? extends String, ? extends Object > m ) 105 { 106 throw new UnsupportedOperationException(); 107 } 108 109 public void clear() 110 { 111 throw new UnsupportedOperationException(); 112 } 113 114 public Set< java.util.Map.Entry< String, Object >> entrySet() 115 { 116 throw new UnsupportedOperationException(); 117 } 118}