001    /**
002     * =========================================
003     * LibFormula : a free Java formula library
004     * =========================================
005     *
006     * Project Info:  http://reporting.pentaho.org/libformula/
007     *
008     * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
009     *
010     * This library is free software; you can redistribute it and/or modify it under the terms
011     * of the GNU Lesser General Public License as published by the Free Software Foundation;
012     * either version 2.1 of the License, or (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
015     * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
016     * See the GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public License along with this
019     * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
020     * Boston, MA 02111-1307, USA.
021     *
022     * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
023     * in the United States and other countries.]
024     *
025     *
026     * ------------
027     * $Id: MappedFunction.java 3521 2007-10-16 10:55:14Z tmorgner $
028     * ------------
029     * (C) Copyright 2006-2007, by Pentaho Corporation.
030     */
031    package org.jfree.formula.function.userdefined;
032    
033    import org.jfree.formula.FormulaContext;
034    import org.jfree.formula.function.Function;
035    import org.jfree.formula.function.ParameterCallback;
036    import org.jfree.formula.lvalues.TypeValuePair;
037    
038    /**
039     * A function, that calls a method on a java class. The class is reinstantiated
040     * each time the function is called (unless the method is static).
041     *
042     * @author Thomas Morgner
043     */
044    public class MappedFunction implements Function
045    {
046      private String className;
047      private String functionName;
048    
049      public MappedFunction()
050      {
051      }
052    
053      public String getClassName()
054      {
055        return className;
056      }
057    
058      public String getCanonicalName()
059      {
060        return functionName;
061      }
062    
063      public TypeValuePair evaluate(final FormulaContext context,
064                                    final ParameterCallback parameters)
065      {
066        return null;
067      }
068    
069      public Object clone() throws CloneNotSupportedException
070      {
071        return super.clone();
072      }
073    }