01: /*
02: * Copyright (c) 2004 JETA Software, Inc. All rights reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without modification,
05: * are permitted provided that the following conditions are met:
06: *
07: * o Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: *
10: * o Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: *
14: * o Neither the name of JETA Software nor the names of its contributors may
15: * be used to endorse or promote products derived from this software without
16: * specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21: * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
22: * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23: * INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25: * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26: * INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28: */
29:
30: package com.jeta.forms.store.bean;
31:
32: import java.io.InputStream;
33: import java.io.ObjectInputStream;
34:
35: import com.jeta.forms.gui.common.FormException;
36: import com.jeta.forms.logger.FormsLogger;
37: import com.jeta.forms.store.memento.PropertiesMemento;
38:
39: /**
40: * A default implementation of a factory for creating BeanSerializer and
41: * BeanDeserializer instances. These classes are resonsible for
42: * serializing/deserializing the properties of a JETABean.
43: *
44: * @author Jeff Tassin
45: */
46: public class DefaultBeanSerializerFactory implements
47: BeanSerializerFactory {
48: /**
49: * Creates an instance of a BeanSerializer which can be used to serialize
50: * the properties of a JETABean.
51: *
52: * @return a bean serializer instance.
53: */
54: public BeanSerializer createSerializer() {
55: return new DefaultBeanSerializer();
56: }
57:
58: /**
59: * Creates an instance of a BeanSerializer which can be used to deserialize
60: * the properties of a JETABean.
61: *
62: * @param istream
63: * an input stream that contains a PropertiesMemento object. The
64: * deserializer uses the PropertiesMemento as a basis for
65: * creating and initializing JETABeans.
66: * @return a bean deserializer instance.
67: */
68: public BeanDeserializer createDeserializer(InputStream istream)
69: throws FormException {
70: try {
71: ObjectInputStream ois = new ObjectInputStream(istream);
72: PropertiesMemento memento = (PropertiesMemento) ois
73: .readObject();
74: return new DefaultBeanDeserializer(memento);
75: } catch (Exception e) {
76: FormsLogger.severe(e);
77: if (e instanceof FormException)
78: throw (FormException) e;
79:
80: throw new FormException(e);
81: }
82: }
83:
84: /**
85: * Creates an instance of a BeanDeserializer which can be used to
86: * deserialize the properties of a JETABean.
87: *
88: * @param pm
89: * an object that contains the serialized properties of a
90: * JETABean. The deserializer uses this as a basis for creating
91: * and initializing JETABeans.
92: * @return a bean deserializer instance.
93: */
94: public BeanDeserializer createDeserializer(PropertiesMemento pm)
95: throws FormException {
96: return new DefaultBeanDeserializer(pm);
97: }
98:
99: }
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