View Javadoc
1 package org.drools.semantics.java; 2 3 /* 4 $Id: BlockConsequence.java,v 1.9 2003/03/25 19:47:29 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 bsh.NameSpace; 50 import org.drools.WorkingMemory; 51 import org.drools.rule.Declaration; 52 import org.drools.smf.ConfigurableConsequence; 53 import org.drools.smf.ConfigurationException; 54 import org.drools.spi.ConsequenceException; 55 import org.drools.spi.Tuple; 56 57 /*** Java block semantics <code>Consequence</code>. 58 * 59 * @author <a href="mailto:bob@werken.com">bob@werken.com</a> 60 * 61 * @version $Id: BlockConsequence.java,v 1.9 2003/03/25 19:47:29 tdiesler Exp $ 62 */ 63 public class BlockConsequence extends Interp implements ConfigurableConsequence 64 { 65 // ------------------------------------------------------------ 66 // Constructors 67 // ------------------------------------------------------------ 68 69 /*** Construct, partially. 70 * 71 * @see Interp#setText 72 */ 73 public BlockConsequence() 74 { 75 // intentionally left blank 76 } 77 78 /*** Construct. 79 * 80 * @param block The statement block. 81 */ 82 public BlockConsequence(String block) 83 { 84 setText( block ); 85 } 86 87 // ------------------------------------------------------------ 88 // Instance methods 89 // ------------------------------------------------------------ 90 91 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 92 // org.drools.smf.ConfigurableConsequence 93 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 94 95 /*** Configure. 96 * 97 * @param text Configuration text. 98 * @param decls Available declarations. 99 * 100 * @throws ConfigurationException If an error occurs while 101 * attempting to perform configuration. 102 */ 103 public void configure(String text, 104 Declaration[] decls) throws ConfigurationException 105 { 106 setText( text ); 107 } 108 109 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 110 // org.drools.spi.Consequence 111 // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 112 113 /*** Execute the consequence for the supplied 114 * matching <code>Tuple</code>. 115 * 116 * @param tuple The matching tuple. 117 * @param workingMemory The working memory session. 118 * 119 * @throws ConsequenceException If an error occurs while 120 * attempting to invoke the consequence. 121 * @throws NullPointerException If the working memory is 122 * <code>null</code>. 123 */ 124 public void invoke(Tuple tuple, 125 WorkingMemory workingMemory) throws ConsequenceException 126 { 127 try 128 { 129 NameSpace ns = setUpNameSpace( tuple ); 130 131 ns.setVariable( "drools$working$memory", 132 workingMemory ); 133 134 ns.setVariable( "appData", 135 workingMemory.getApplicationData() ); 136 137 evaluate( ns ); 138 } 139 catch (Exception e) 140 { 141 throw new ConsequenceException( e ); 142 } 143 } 144 }

This page was automatically generated by Maven