| 1 | /* |
| 2 | * jDTAUS Core API |
| 3 | * Copyright (C) 2005 Christian Schulte |
| 4 | * <cs@schulte.it> |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | * |
| 20 | */ |
| 21 | package org.jdtaus.core.container; |
| 22 | |
| 23 | import java.io.Serializable; |
| 24 | |
| 25 | /** |
| 26 | * Property meta-data. |
| 27 | * <p>A property consists of the properties {@code name}, {@code type} and |
| 28 | * {@code value}. Property {@code name} holds the name uniquely identifying the |
| 29 | * property in a collection of properties. Property {@code type} holds the type |
| 30 | * of the property. Property {@code value} holds the properties value which is |
| 31 | * of type {@code type}. The {@code api} flag indicates if the property is part |
| 32 | * of a public API.</p> |
| 33 | * |
| 34 | * @author <a href="mailto:cs@schulte.it">Christian Schulte</a> |
| 35 | * @version $JDTAUS: Property.java 8743 2012-10-07 03:06:20Z schulte $ |
| 36 | */ |
| 37 | public class Property extends ModelObject implements Cloneable, Serializable |
| 38 | { |
| 39 | //--Constants--------------------------------------------------------------- |
| 40 | |
| 41 | /** Serial version UID for backwards compatibility with 1.0.x classes. */ |
| 42 | private static final long serialVersionUID = -5450366074586725711L; |
| 43 | |
| 44 | //---------------------------------------------------------------Constants-- |
| 45 | //--Property---------------------------------------------------------------- |
| 46 | |
| 47 | /** |
| 48 | * The name of the property. |
| 49 | * @serial |
| 50 | */ |
| 51 | private String name; |
| 52 | |
| 53 | /** |
| 54 | * The type of the property. |
| 55 | * @serial |
| 56 | */ |
| 57 | private Class type; |
| 58 | |
| 59 | /** |
| 60 | * The value of the property. |
| 61 | * @serial |
| 62 | */ |
| 63 | private Object value; |
| 64 | |
| 65 | /** |
| 66 | * Flag indicating that the property is part of a public API. |
| 67 | * @serial |
| 68 | */ |
| 69 | private boolean api; |
| 70 | |
| 71 | /** Creates a new {@code Property} instance. */ |
| 72 | public Property() |
| 73 | { |
| 74 | super(); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * Gets the name of the property. |
| 79 | * |
| 80 | * @return the name of the property. |
| 81 | */ |
| 82 | public String getName() |
| 83 | { |
| 84 | if ( this.name == null ) |
| 85 | { |
| 86 | this.name = ""; |
| 87 | } |
| 88 | |
| 89 | return this.name; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Setter for property {@code name}. |
| 94 | * |
| 95 | * @param value the new name of the property. |
| 96 | */ |
| 97 | public void setName( final String value ) |
| 98 | { |
| 99 | this.name = value; |
| 100 | } |
| 101 | |
| 102 | /** |
| 103 | * Gets the type of the property. |
| 104 | * |
| 105 | * @return the type of the property. |
| 106 | */ |
| 107 | public Class getType() |
| 108 | { |
| 109 | if ( this.type == null ) |
| 110 | { |
| 111 | this.type = String.class; |
| 112 | } |
| 113 | |
| 114 | return this.type; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Setter for property {@code type}. |
| 119 | * |
| 120 | * @param value the new type of the property. |
| 121 | */ |
| 122 | public void setType( final Class value ) |
| 123 | { |
| 124 | this.type = value; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Gets the value of the property. |
| 129 | * |
| 130 | * @return the value of the property or {@code null}. |
| 131 | */ |
| 132 | public Object getValue() |
| 133 | { |
| 134 | return this.value; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Setter for property {@code value}. |
| 139 | * |
| 140 | * @param value the new value of the property. |
| 141 | */ |
| 142 | public void setValue( final Object value ) |
| 143 | { |
| 144 | this.value = value; |
| 145 | } |
| 146 | |
| 147 | /** |
| 148 | * Gets the flag indicating if the property is part of a public API. |
| 149 | * |
| 150 | * @return {@code true} if the property is part of a public API. |
| 151 | */ |
| 152 | public boolean isApi() |
| 153 | { |
| 154 | return this.api; |
| 155 | } |
| 156 | |
| 157 | /** |
| 158 | * Setter for property {@code api}. |
| 159 | * |
| 160 | * @param value {@code true} if the property is part of a public API. |
| 161 | */ |
| 162 | public void setApi( final boolean value ) |
| 163 | { |
| 164 | this.api = value; |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Creates a string representing the properties of the instance. |
| 169 | * |
| 170 | * @return a string representing the properties of the instance. |
| 171 | */ |
| 172 | private String internalString() |
| 173 | { |
| 174 | return new StringBuffer( 500 ).append( '{' ). |
| 175 | append( super.internalString( this ) ). |
| 176 | append( ", api=" ).append( this.api ). |
| 177 | append( ", name=" ).append( this.name ). |
| 178 | append( ", type=" ).append( this.type ). |
| 179 | append( ", value=" ).append( this.value ). |
| 180 | append( '}' ).toString(); |
| 181 | |
| 182 | } |
| 183 | |
| 184 | //----------------------------------------------------------------Property-- |
| 185 | //--Object------------------------------------------------------------------ |
| 186 | |
| 187 | /** |
| 188 | * Returns a string representation of the object. |
| 189 | * |
| 190 | * @return a string representation of the object. |
| 191 | */ |
| 192 | public String toString() |
| 193 | { |
| 194 | return super.toString() + this.internalString(); |
| 195 | } |
| 196 | |
| 197 | /** |
| 198 | * Indicates whether some other object is equal to this one by comparing |
| 199 | * the values of all properties. |
| 200 | * |
| 201 | * @param o the reference object with which to compare. |
| 202 | * |
| 203 | * @return {@code true} if this object is the same as {@code o}; |
| 204 | * {@code false} otherwise. |
| 205 | */ |
| 206 | public boolean equals( final Object o ) |
| 207 | { |
| 208 | boolean equal = this == o; |
| 209 | |
| 210 | if ( !equal && o instanceof Property ) |
| 211 | { |
| 212 | final Property that = (Property) o; |
| 213 | equal = this.getName().equals( that.getName() ) && |
| 214 | this.getType().equals( that.getType() ) && |
| 215 | ( this.getValue() == null |
| 216 | ? that.getValue() == null |
| 217 | : this.getValue().equals( that.getValue() ) ); |
| 218 | |
| 219 | } |
| 220 | |
| 221 | return equal; |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Returns a hash code value for this object. |
| 226 | * |
| 227 | * @return a hash code value for this object. |
| 228 | */ |
| 229 | public int hashCode() |
| 230 | { |
| 231 | return this.getName().hashCode() + |
| 232 | this.getType().hashCode() + |
| 233 | ( this.getValue() == null ? 0 : this.getValue().hashCode() ); |
| 234 | |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Creates and returns a copy of this object. This method performs a |
| 239 | * "shallow copy" of this object, not a "deep copy" operation. |
| 240 | * |
| 241 | * @return a clone of this instance. |
| 242 | */ |
| 243 | public Object clone() |
| 244 | { |
| 245 | try |
| 246 | { |
| 247 | return super.clone(); |
| 248 | } |
| 249 | catch ( final CloneNotSupportedException e ) |
| 250 | { |
| 251 | throw new AssertionError( e ); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | //------------------------------------------------------------------Object-- |
| 256 | } |