Source Code Cross Referenced for SimpleObjectFactory.java in  » Graphic-Library » jcommon-components » org » jfree » xml » util » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Graphic Library » jcommon components » org.jfree.xml.util 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* ========================================================================
002:         * JCommon : a free general purpose class library for the Java(tm) platform
003:         * ========================================================================
004:         *
005:         * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
006:         * 
007:         * Project Info:  http://www.jfree.org/jcommon/index.html
008:         *
009:         * This library is free software; you can redistribute it and/or modify it 
010:         * under the terms of the GNU Lesser General Public License as published by 
011:         * the Free Software Foundation; either version 2.1 of the License, or 
012:         * (at your option) any later version.
013:         *
014:         * This library is distributed in the hope that it will be useful, but 
015:         * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016:         * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017:         * License for more details.
018:         *
019:         * You should have received a copy of the GNU Lesser General Public
020:         * License along with this library; if not, write to the Free Software
021:         * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022:         * USA.  
023:         *
024:         * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025:         * in the United States and other countries.]
026:         * 
027:         * ------------------------
028:         * SimpleObjectFactory.java
029:         * ------------------------
030:         * (C)opyright 2003-2005, by Thomas Morgner and Contributors.
031:         *
032:         * Original Author:  Thomas Morgner;
033:         * Contributor(s):   David Gilbert (for Object Refinery Limited);
034:         *
035:         * $Id: SimpleObjectFactory.java,v 1.3 2005/10/18 13:33:53 mungady Exp $
036:         *
037:         * Changes 
038:         * -------
039:         * 02-Dec-2003 : Initial version
040:         *  
041:         */
042:
043:        package org.jfree.xml.util;
044:
045:        import java.util.HashMap;
046:
047:        /**
048:         * A simple object factory.
049:         */
050:        public class SimpleObjectFactory implements  ObjectFactory {
051:
052:            /** The object mappings. */
053:            private HashMap objectMappings;
054:
055:            /** The manual object mappings. */
056:            private HashMap manualMappings;
057:
058:            /** The multiplex mappings. */
059:            private HashMap multiplexMappings;
060:
061:            /**
062:             * Creates a new instance.
063:             */
064:            public SimpleObjectFactory() {
065:                this .objectMappings = new HashMap();
066:                this .manualMappings = new HashMap();
067:                this .multiplexMappings = new HashMap();
068:            }
069:
070:            /**
071:             * Adds a manual mapping.
072:             * 
073:             * @param mapping  the mapping.
074:             */
075:            public void addManualMapping(final ManualMappingDefinition mapping) {
076:                this .manualMappings.put(mapping.getBaseClass(), mapping);
077:            }
078:
079:            /**
080:             * Adds a generic handler.
081:             * 
082:             * @param handler  the handler.
083:             */
084:            public void addGenericHandler(final GenericObjectFactory handler) {
085:                this .objectMappings.put(handler.getBaseClass(), handler);
086:            }
087:
088:            /**
089:             * Adds a multiplex mapping.
090:             * 
091:             * @param mplex  the multiplex mapping.
092:             */
093:            public void addMultiplexMapping(
094:                    final MultiplexMappingDefinition mplex) {
095:                this .multiplexMappings.put(mplex.getBaseClass(), mplex);
096:            }
097:
098:            /**
099:             * Clears the mappings.
100:             */
101:            public void clear() {
102:                this .objectMappings.clear();
103:                this .manualMappings.clear();
104:                this .multiplexMappings.clear();
105:            }
106:
107:            /**
108:             * Returns a factory instance for the given class. The factory is independent
109:             * from all previously generated instances.
110:             *
111:             * @param c the class
112:             * @return the object factory.
113:             */
114:            public GenericObjectFactory getFactoryForClass(final Class c) {
115:                final GenericObjectFactory factory = (GenericObjectFactory) this .objectMappings
116:                        .get(c);
117:                if (factory == null) {
118:                    return null;
119:                }
120:                return factory.getInstance();
121:            }
122:
123:            /**
124:             * Returns the manual mapping definition for the given class, or null, if
125:             * not manual definition exists.
126:             *
127:             * @param c the class for which to check the existence of the definition
128:             * @return the manual mapping definition or null.
129:             */
130:            public ManualMappingDefinition getManualMappingDefinition(
131:                    final Class c) {
132:                return (ManualMappingDefinition) this .manualMappings.get(c);
133:            }
134:
135:            /**
136:             * Returns the multiplex definition for the given class, or null, if no
137:             * such definition exists.
138:             *
139:             * @param c the class for which to check the existence of the multiplexer
140:             * @return the multiplexer for the class, or null if no multiplexer exists.
141:             */
142:            public MultiplexMappingDefinition getMultiplexDefinition(
143:                    final Class c) {
144:                final MultiplexMappingDefinition definition = (MultiplexMappingDefinition) this .multiplexMappings
145:                        .get(c);
146:                return definition;
147:            }
148:
149:            /**
150:             * Checks, whether a generic handler exists for the given class. This does
151:             * not check, whether an mapping exists.
152:             *
153:             * @param c the class for which to check
154:             * @return true, if an generic handler is defined, false otherwise.
155:             */
156:            public boolean isGenericHandler(final Class c) {
157:                return this.objectMappings.containsKey(c);
158:            }
159:        }
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