1 package org.drools.tags.semantics;
2
3 /*
4 $Id: SemanticComponentTagSupport.java,v 1.2 2003/03/25 19:47:32 tdiesler Exp $
5
6 Copyright 2002 (C) The Werken Company. All Rights Reserved.
7
8 Redistribution and use of this software and associated documentation
9 ("Software"), with or without modification, are permitted provided
10 that the following conditions are met:
11
12 1. Redistributions of source code must retain copyright
13 statements and notices. Redistributions must also contain a
14 copy of this document.
15
16 2. Redistributions in binary form must reproduce the
17 above copyright notice, this list of conditions and the
18 following disclaimer in the documentation and/or other
19 materials provided with the distribution.
20
21 3. The name "drools" must not be used to endorse or promote
22 products derived from this Software without prior written
23 permission of The Werken Company. For written permission,
24 please contact bob@werken.com.
25
26 4. Products derived from this Software may not be called "drools"
27 nor may "drools" appear in their names without prior written
28 permission of The Werken Company. "drools" is a registered
29 trademark of The Werken Company.
30
31 5. Due credit should be given to The Werken Company.
32 (http://drools.werken.com/).
33
34 THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS
35 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
36 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
37 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
38 THE WERKEN COMPANY OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
39 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
40 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
41 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
42 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
43 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
44 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
45 OF THE POSSIBILITY OF SUCH DAMAGE.
46
47 */
48
49 import org.apache.commons.jelly.MissingAttributeException;
50 import org.drools.smf.SimpleSemanticModule;
51
52 /*** Support for semantic components.
53 *
54 * @author <a href="mailto:bob@eng.werken.com">bob mcwhirter</a>
55 */
56 public abstract class SemanticComponentTagSupport extends SemanticsTagSupport
57 {
58 // ------------------------------------------------------------
59 // Instance members
60 // ------------------------------------------------------------
61
62 /*** The component name. */
63 private String name;
64
65 /*** The component class name. */
66 private String classname;
67
68 // ------------------------------------------------------------
69 // Constructors
70 // ------------------------------------------------------------
71
72 /*** Construct.
73 */
74 public SemanticComponentTagSupport()
75 {
76 // intentionally left blank.
77 }
78
79 // ------------------------------------------------------------
80 // Instance methods
81 // ------------------------------------------------------------
82
83 /*** Set the component name.
84 *
85 * @param name The name.
86 */
87 public void setName(String name)
88 {
89 this.name = name;
90 }
91
92 /*** Retrieve the component name.
93 *
94 * @return The component name.
95 */
96 public String getName()
97 {
98 return this.name;
99 }
100
101 /*** Set the component class name.
102 *
103 * @param classname The component class name.
104 */
105 public void setClassname(String classname)
106 {
107 this.classname = classname;
108 }
109
110 /*** Retrieve the component class name.
111 *
112 * @return The component class name.
113 */
114 public String getClassname()
115 {
116 return this.classname;
117 }
118
119 /*** Check if the attributes have been set.
120 *
121 * @throws MissingAttributeException If the attributes have not been set.
122 */
123 public void checkAttributes() throws MissingAttributeException
124 {
125 if ( this.classname == null )
126 {
127 throw new MissingAttributeException( "classname" );
128 }
129
130 if ( this.name == null )
131 {
132 throw new MissingAttributeException( "name" );
133 }
134 }
135
136 /*** Retrieve the current <code>SemanticModule</code>.
137 *
138 * @return The current <code>SemanticModule</code> or
139 * <code>null</code> if none found.
140 */
141 public SimpleSemanticModule getSemanticModule()
142 {
143 SemanticModuleTag tag = (SemanticModuleTag) findAncestorWithClass( SemanticModuleTag.class );
144
145 if ( tag == null )
146 {
147 return null;
148 }
149
150 return tag.getSemanticModule();
151 }
152 }
153
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