1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.jetspeed.om.page.impl;
18
19 import java.util.Iterator;
20 import java.util.List;
21
22 import org.apache.jetspeed.om.preference.FragmentPreference;
23 import org.apache.jetspeed.page.impl.DatabasePageManagerUtils;
24 import org.apache.pluto.om.common.Preference;
25 import org.apache.pluto.om.common.PreferenceCtrl;
26
27 /***
28 * FragmentPreferenceImpl
29 *
30 * @author <a href="mailto:rwatler@apache.org">Randy Watler</a>
31 * @version $Id$
32 */
33 public class FragmentPreferenceImpl implements Preference, PreferenceCtrl, FragmentPreference
34 {
35 private int id;
36 private String name;
37 private boolean readOnly;
38 private List values;
39
40 private FragmentPreferenceValueList preferenceValues;
41
42 /***
43 * accessValues
44 *
45 * Access mutable persistent collection member for List wrappers.
46 *
47 * @return persistent collection
48 */
49 List accessValues()
50 {
51 // create initial collection if necessary
52 if (values == null)
53 {
54 values = DatabasePageManagerUtils.createList();
55 }
56 return values;
57 }
58
59 /* (non-Javadoc)
60 * @see org.apache.jetspeed.om.preference.FragmentPreference#getName()
61 * @see org.apache.pluto.om.common.Preference#getName()
62 */
63 public String getName()
64 {
65 return name;
66 }
67
68 /* (non-Javadoc)
69 * @see org.apache.jetspeed.om.preference.FragmentPreference#setName(java.lang.String)
70 * @see org.apache.pluto.om.common.PreferenceCtrl#setName(java.lang.String)
71 */
72 public void setName(String name)
73 {
74 this.name = name;
75 }
76
77 /* (non-Javadoc)
78 * @see org.apache.jetspeed.om.preference.FragmentPreference#isReadOnly()
79 * @see org.apache.pluto.om.common.Preference#isReadOnly()
80 */
81 public boolean isReadOnly()
82 {
83 return readOnly;
84 }
85
86 /* (non-Javadoc)
87 * @see org.apache.jetspeed.om.preference.FragmentPreference#setReadOnly(boolean)
88 */
89 public void setReadOnly(boolean readOnly)
90 {
91 this.readOnly = readOnly;
92 }
93
94 /* (non-Javadoc)
95 * @see org.apache.jetspeed.om.preference.FragmentPreference#getValueList()
96 */
97 public List getValueList()
98 {
99 // return mutable preference value list
100 // using list wrapper to manage value order
101 if (preferenceValues == null)
102 {
103 preferenceValues = new FragmentPreferenceValueList(this);
104 }
105 return preferenceValues;
106 }
107
108 /* (non-Javadoc)
109 * @see org.apache.jetspeed.om.preference.FragmentPreference#setValueList(java.util.List)
110 */
111 public void setValueList(List values)
112 {
113 // set preference values by replacing existing
114 // entries with new elements if new collection
115 // is specified
116 List preferenceValues = getValueList();
117 if (values != preferenceValues)
118 {
119 // replace all values
120 preferenceValues.clear();
121 if (values != null)
122 {
123 preferenceValues.addAll(values);
124 }
125 }
126 }
127
128 /* (non-Javadoc)
129 * @see org.apache.pluto.om.common.Preference#getValues()
130 */
131 public Iterator getValues()
132 {
133 return getValueList().iterator();
134 }
135
136 /* (non-Javadoc)
137 * @see org.apache.pluto.om.common.Preference#isValueSet()
138 */
139 public boolean isValueSet()
140 {
141 return !getValueList().isEmpty();
142 }
143
144 /* (non-Javadoc)
145 * @see org.apache.pluto.om.common.PreferenceCtrl#setValues(java.util.List)
146 */
147 public void setValues(List values)
148 {
149 setValueList(values);
150 }
151
152 /* (non-Javadoc)
153 * @see org.apache.pluto.om.common.PreferenceCtrl#setReadOnly(java.lang.String)
154 */
155 public void setReadOnly(String readOnly)
156 {
157 setReadOnly(new Boolean(readOnly).booleanValue());
158 }
159
160 /* (non-Javadoc)
161 * @see java.lang.Object#equals(java.lang.Object)
162 */
163 public boolean equals(Object o)
164 {
165 if (o instanceof FragmentPreferenceImpl)
166 {
167 if (name != null)
168 {
169 return name.equals(((FragmentPreferenceImpl)o).getName());
170 }
171 return (((FragmentPreferenceImpl)o).getName() == null);
172 }
173 return false;
174 }
175
176 /* (non-Javadoc)
177 * @see java.lang.Object#hashCode()
178 */
179 public int hashCode()
180 {
181 if (name != null)
182 {
183 return name.hashCode();
184 }
185 return 0;
186 }
187 }