package org.drools.semantics.python;
/*
* $Id: PythonBlockConsequence.java,v 1.4 2005/11/10 04:54:43 mproctor Exp $
*
* Copyright 2002 (C) The Werken Company. All Rights Reserved.
*
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain copyright statements and
* notices. Redistributions must also contain a copy of this document.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* 3. The name "drools" must not be used to endorse or promote products derived
* from this Software without prior written permission of The Werken Company.
* For written permission, please contact bob@werken.com.
*
* 4. Products derived from this Software may not be called "drools" nor may
* "drools" appear in their names without prior written permission of The Werken
* Company. "drools" is a registered trademark of The Werken Company.
*
* 5. Due credit should be given to The Werken Company.
* (http://drools.werken.com/).
*
* THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS ``AS IS''
* AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE WERKEN COMPANY OR ITS CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
*/
import org.drools.rule.Rule;
import org.drools.smf.SemanticComponent;
import org.drools.spi.Consequence;
import org.drools.spi.ConsequenceException;
import org.drools.spi.Tuple;
import org.python.core.Py;
/**
* Python block semantics <code>Consequence</code>.
*
* @author <a href="mailto:bob@eng.werken.com">bob mcwhirter </a>
*/
public class PythonBlockConsequence extends PythonInterp
implements
Consequence,
SemanticComponent
{
protected final String semanticType = "python";
protected final String name;
// ------------------------------------------------------------
// Constructors
// ------------------------------------------------------------
/**
* Construct.
*/
protected PythonBlockConsequence(String text,
Rule rule)
{
super( text,
rule,
"exec" );
this.name = "consequence";
}
// ------------------------------------------------------------
// Instance methods
// ------------------------------------------------------------
public String getSemanticType()
{
return semanticType;
}
public String getName()
{
return this.name;
}
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
// org.drools.spi.Consequence
// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
/**
* Execute the consequence for the supplied matching <code>Tuple</code>.
*
* @param tuple
* The matching tuple.
* @param workingMemory
* The working memory session.
*
* @throws ConsequenceException
* If an error occurs while attempting to invoke the
* consequence.
*/
public void invoke(Tuple tuple) throws ConsequenceException
{
try
{
Py.runCode( getCode( ),
setUpDictionary( tuple,
getRule( ).getParameterDeclarations( ).iterator( ) ),
getGlobals( ) );
}
catch ( Exception e )
{
throw new ConsequenceException( e,
getRule( ) );
}
}
}