Source Code Cross Referenced for PropertiesMemento.java in  » Swing-Library » abeille-forms-designer » com » jeta » forms » store » memento » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » abeille forms designer » com.jeta.forms.store.memento 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright (c) 2004 JETA Software, Inc.  All rights reserved.
003:         * 
004:         * Redistribution and use in source and binary forms, with or without modification, 
005:         * are permitted provided that the following conditions are met:
006:         *
007:         *  o Redistributions of source code must retain the above copyright notice, 
008:         *    this list of conditions and the following disclaimer.
009:         *
010:         *  o Redistributions in binary form must reproduce the above copyright notice, 
011:         *    this list of conditions and the following disclaimer in the documentation 
012:         *    and/or other materials provided with the distribution.
013:         *
014:         *  o Neither the name of JETA Software nor the names of its contributors may 
015:         *    be used to endorse or promote products derived from this software without 
016:         *    specific prior written permission.
017:         *
018:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
019:         * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
020:         * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
021:         * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
022:         * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
023:         * INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
024:         * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
025:         * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
026:         * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
027:         * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
028:         */
029:
030:        package com.jeta.forms.store.memento;
031:
032:        import java.io.IOException;
033:        import java.io.Serializable;
034:        import java.util.Collection;
035:        import java.util.HashMap;
036:        import java.util.Iterator;
037:
038:        import com.jeta.forms.store.AbstractJETAPersistable;
039:        import com.jeta.forms.store.JETAObjectInput;
040:        import com.jeta.forms.store.JETAObjectOutput;
041:        import com.jeta.forms.store.support.PropertyMap;
042:
043:        /**
044:         * This class is used to store properties for a Java Bean. This class stores
045:         * both standard and custom properties.
046:         * 
047:         * @author Jeff Tassin
048:         */
049:        public class PropertiesMemento extends AbstractJETAPersistable {
050:            static final long serialVersionUID = -3299575217906477613L;
051:
052:            public static final int VERSION = 2;
053:
054:            /**
055:             * The Component class associated with this memento. This is the class name
056:             * of the Java bean. For example: javax.swing.JButton
057:             */
058:            private String m_class_name;
059:
060:            /**
061:             * A map of property names to their value: m_standard_props<String,Object>
062:             * The key is the name of the property. The value is the property value.
063:             * This value must be serializable or it will not be stored.
064:             */
065:            private PropertyMap m_props = new PropertyMap();
066:
067:            /**
068:             * Creates an uninitialized <code>PropertiesMemento</code> instance.
069:             */
070:            public PropertiesMemento() {
071:
072:            }
073:
074:            /**
075:             * Creates a <code>PropertiesMemento</code> instance with the given Java
076:             * bean class name.
077:             * 
078:             * @param className
079:             *            the name of the Java bean class associated with this memento.
080:             */
081:            public PropertiesMemento(String className) {
082:                m_class_name = className;
083:            }
084:
085:            /**
086:             * Returns the class name of the Java Bean component associated with this
087:             * memento.
088:             * 
089:             * @return the Java bean class name associated with this memento.
090:             */
091:            public String getBeanClassName() {
092:                return m_class_name;
093:            }
094:
095:            /**
096:             * Adds a property value to this memento.
097:             * 
098:             * @param name
099:             *            the name of the property to add to this memento.
100:             * @param value
101:             *            the property value.
102:             */
103:            public void addProperty(String name, Serializable value) {
104:                m_props.put(name, value);
105:            }
106:
107:            /**
108:             * Return true if this memento contains a value for the given property name.
109:             * 
110:             * @param propName
111:             *            the name of the property
112:             * @return true if this object contains a value for the property with the
113:             *         given name.
114:             */
115:            public boolean containsProperty(String propName) {
116:                return m_props.containsKey(propName);
117:            }
118:
119:            /**
120:             * Return the value associated with the standard property <i>name</i>. If
121:             * the <i>name</i> property is not contained by this memento, null is
122:             * returned.
123:             * 
124:             * @return the value of the name property.
125:             */
126:            public String getComponentName() {
127:                Object obj = getPropertyValue("name");
128:                if (obj != null)
129:                    return obj.toString();
130:                else
131:                    return null;
132:            }
133:
134:            /**
135:             * Return the names of the properties contained by this memento.
136:             */
137:            public Collection getPropertyNames() {
138:                return m_props.keySet();
139:            }
140:
141:            /**
142:             * Returns the value for the given property
143:             * 
144:             * @param propName
145:             *            the name of the property
146:             * @return the value for the property. Null if the property is not contained
147:             *         by this memento.
148:             */
149:            public Object getPropertyValue(String propName) {
150:                return m_props.get(propName);
151:            }
152:
153:            /**
154:             * Prints this object to the console
155:             */
156:            public void print() {
157:                System.out.println("................ properties memento: "
158:                        + getBeanClassName() + "   ..............");
159:                java.util.Iterator iter = m_props.keySet().iterator();
160:                while (iter.hasNext()) {
161:                    String pname = (String) iter.next();
162:                    System.out.println("          " + pname + " = "
163:                            + m_props.get(pname));
164:                }
165:            }
166:
167:            /**
168:             * Sets the class name of the Java Bean associated with this memento.
169:             * 
170:             * @param cname
171:             *            the class name of the Java Bean to set.
172:             */
173:            public void setBeanClassName(String cname) {
174:                m_class_name = cname;
175:            }
176:
177:            /**
178:             * JETAPersistable Implementation
179:             */
180:            public void read(JETAObjectInput in) throws ClassNotFoundException,
181:                    IOException {
182:                int version = in.readVersion();
183:                m_class_name = (String) in.readObject("classname");
184:                if (version <= 1) {
185:                    Object obj = in.readObject("properties");
186:                    if (obj instanceof  HashMap)
187:                        m_props = new PropertyMap((HashMap) obj);
188:                    else
189:                        m_props = (PropertyMap) obj;
190:
191:                    if (m_props == null)
192:                        m_props = new PropertyMap();
193:
194:                    HashMap custom_props = (HashMap) in
195:                            .readObject("customproperties");
196:                    if (custom_props != null) {
197:                        Iterator iter = custom_props.keySet().iterator();
198:                        while (iter.hasNext()) {
199:                            Object key = iter.next();
200:                            m_props.put(key, custom_props.get(key));
201:                        }
202:                    }
203:                } else {
204:                    Object obj = in.readObject("properties");
205:                    if (obj instanceof  HashMap)
206:                        m_props = new PropertyMap((HashMap) obj);
207:                    else
208:                        m_props = (PropertyMap) obj;
209:                }
210:            }
211:
212:            /**
213:             * JETAPersistable Implementation
214:             */
215:            public void write(JETAObjectOutput out) throws IOException {
216:                out.writeVersion(VERSION);
217:                out.writeObject("classname", m_class_name);
218:                out.writeObject("properties", m_props);
219:            }
220:
221:        }
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