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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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