001: /*
002: * $Header: /export/home/cvsroot/MyPersonalizerRepository/MyPersonalizer/Subsystems/Kernel/Sources/es/udc/mypersonalizer/kernel/model/metainfo/MetaSimpleProperty.java,v 1.1.1.1 2004/03/25 12:08:37 fbellas Exp $
003: * $Revision: 1.1.1.1 $
004: * $Date: 2004/03/25 12:08:37 $
005: *
006: * =============================================================================
007: *
008: * Copyright (c) 2003, The MyPersonalizer Development Group
009: * (http://www.tic.udc.es/~fbellas/mypersonalizer/index.html) at
010: * University Of A Coruna
011: * All rights reserved.
012: *
013: * Redistribution and use in source and binary forms, with or without
014: * modification, are permitted provided that the following conditions are met:
015: *
016: * - Redistributions of source code must retain the above copyright notice,
017: * this list of conditions and the following disclaimer.
018: *
019: * - Redistributions in binary form must reproduce the above copyright notice,
020: * this list of conditions and the following disclaimer in the documentation
021: * and/or other materials provided with the distribution.
022: *
023: * - Neither the name of the University Of A Coruna nor the names of its
024: * contributors may be used to endorse or promote products derived from
025: * this software without specific prior written permission.
026: *
027: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
028: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
029: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
030: * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
031: * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
032: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
033: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
034: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
035: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
036: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
037: * POSSIBILITY OF SUCH DAMAGE.
038: *
039: */
040:
041: package es.udc.mypersonalizer.kernel.model.metainfo;
042:
043: import java.util.Iterator;
044:
045: import es.udc.mypersonalizer.kernel.util.exceptions.VisitorException;
046:
047: /**
048: * A standard leaf implementation of the <code>MetaProperty</code> interface.
049: * This class stores internally the metainformation relative to a concrete
050: * <code>Property</code> so it can store and retrieve their information from
051: * a persistence storage in a database.
052: * <p>
053: * This information includes the java type for the value or values that the
054: * <code>Property</code> holds and the type in the database.
055: *
056: * @author Fernando Bellas
057: * @author Abel Muinho
058: * @see es.udc.mypersonalizer.kernel.model.metainfo.MetaProperty
059: * @since 1.0
060: */
061: public class MetaSimpleProperty extends AbstractMetaProperty implements
062: MetaProperty {
063:
064: /**
065: * For interoperability with possible future changes.
066: *
067: */
068: private static final long serialVersionUID = 1896161887071196739L;
069:
070: /**
071: * A <code>Class</code> representing the java type for the values that
072: * holds the properties represented by this meta-property.
073: *
074: * @serial
075: */
076: private Class javaType;
077:
078: /**
079: * Creates an instance of <code>MetaSimpleProperty</code> with no
080: * initializing values.
081: *
082: */
083: public MetaSimpleProperty() {
084: this (null, false, null);
085: }
086:
087: /**
088: * Creates an instance of <code>MetaSimpleProperty</code> from
089: * its attributes.
090: *
091: * @param simpleName the simple name of this meta-property
092: * @param multiValued <code>boolean</code> indicating if this
093: * meta-propertyis multi-valued or not
094: * @param javaType the java type for the values that hold the properties
095: * represented by this meta-property
096: */
097: public MetaSimpleProperty(String simpleName, boolean multiValued,
098: Class javaType) {
099: super (simpleName, multiValued);
100: this .javaType = javaType;
101: }
102:
103: /**
104: * Returns the java type for the values that holds the properties
105: * represented by this meta-property.
106: *
107: * @return the java type for the values that holds the properties
108: * represented by this meta-property
109: */
110: public Class getJavaType() {
111: return javaType;
112: }
113:
114: /**
115: * Sets the java type for the values that holds the properties
116: * represented by this meta-property.
117: *
118: * @param javaType the java type for the values that holds the
119: * properties represented by this meta-property
120: */
121: public void setJavaType(Class javaType) {
122: this .javaType = javaType;
123: }
124:
125: /**
126: * Not supported.
127: */
128: public Iterator getMetaProperties() {
129: throw new UnsupportedOperationException(
130: "Operation not supported");
131: }
132:
133: /**
134: * Not supported.
135: */
136: public void addMetaProperty(MetaProperty metaProperty) {
137: throw new UnsupportedOperationException(
138: "Operation not supported");
139: }
140:
141: /**
142: * Not supported.
143: */
144: public MetaProperty findMetaProperty(String relativeName)
145: throws MetaPropertyNotFoundException {
146:
147: throw new UnsupportedOperationException(
148: "Operation not supported");
149:
150: }
151:
152: /**
153: * Operation which allows this object to <b>accept</b> a visitor
154: * to perform an operation over it.
155: * It's the Accept operation implementation for the "Visitor" pattern.
156: *
157: * @param visitor the visitor who operates on this
158: * <code>MetaSimpleProperty</code>
159: *
160: * @return a possible object of interest for the caller.
161: * May be a <code>null</code> value
162: * @throws VisitorException if an internal error occurs while
163: * processing the visited object
164: */
165: public Object accept(Visitor visitor) throws VisitorException {
166:
167: return visitor.visitMetaSimpleProperty(this);
168:
169: }
170:
171: }
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