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: IsTextFunctionDescription.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.information;
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.AnyType;
037    import org.jfree.formula.typing.coretypes.LogicalType;
038    
039    /**
040     * Describes IsTextFunction function.
041     * @see IsTextFunction
042     *
043     * @author Cedric Pronzato
044     *
045     */
046    public class IsTextFunctionDescription extends AbstractFunctionDescription
047    {
048    
049      public IsTextFunctionDescription()
050      {
051        super("org.jfree.formula.function.information.IsText-Function");
052      }
053    
054      public FunctionCategory getCategory()
055      {
056        return InformationFunctionCategory.CATEGORY;
057      }
058    
059      public int getParameterCount()
060      {
061        return 1;
062      }
063    
064      public Type getParameterType(final int position)
065      {
066        return AnyType.TYPE;
067      }
068    
069      public Type getValueType()
070      {
071        return LogicalType.TYPE;
072      }
073    
074      public boolean isParameterMandatory(final int position)
075      {
076        return true;
077      }
078    
079    }