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: AbsFunctionDescription.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.math;
032    
033    import org.jfree.formula.function.AbstractFunctionDescription;
034    import org.jfree.formula.function.FunctionCategory;
035    import org.jfree.formula.typing.Type;
036    import org.jfree.formula.typing.coretypes.NumberType;
037    
038    /**
039     * Describes AbsFunction function.
040     * @see AbsFunction
041     *
042     * @author Cedric Pronzato
043     *
044     */
045    public class AbsFunctionDescription extends AbstractFunctionDescription
046    {
047      public AbsFunctionDescription()
048      {
049        super("org.jfree.formula.function.math.Abs-Function");
050      }
051    
052      public FunctionCategory getCategory()
053      {
054        return MathFunctionCategory.CATEGORY;
055      }
056    
057      public int getParameterCount()
058      {
059        return 1;
060      }
061    
062      public Type getParameterType(final int position)
063      {
064        return NumberType.GENERIC_NUMBER;
065      }
066    
067      public Type getValueType()
068      {
069        return NumberType.GENERIC_NUMBER;
070      }
071    
072      public boolean isParameterMandatory(final int position)
073      {
074        return true;
075      }
076    
077    }