interp.java

rule engine drools-2.0-beta-18

package org.drools.semantics.java;

/*
 * $Id: Interp.java,v 1.24 2004/11/28 20:01:12 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 [e-mail].
 *
 * 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 java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;

import net.janino.Scanner;

import org.drools.rule.Declaration;
import org.drools.rule.Rule;

public class Interp
{
    static Object compile(Rule rule,
                                            Class clazz,
                                            String expr,
                                            String origExpr,
                                            String[] scriptParamNames,
                                            Declaration[] params,
                                            Set imports,
                                            Map applicationData) throws IOException,
                                                                CompilationException
    {
        if ( applicationData == null )
        {
            applicationData = new HashMap( );
        }
        try
        {
            return DroolsScriptEvaluator.compile( expr,
                                                  clazz,
                                                  scriptParamNames,
                                                  params,
                                                  imports,
                                                  applicationData );
        }
        catch ( Scanner.LocatedException e )
        {
            throw new CompilationException( rule,
                                            origExpr,
                                            e.getLocation( ).getLineNumber( ),
                                            e.getLocation( ).getColumnNumber( ),
                                            e.getMessage( ) );
        }
    }
}