Source for org.jfree.formula.function.FunctionRegistry

   1: /**
   2:  * =========================================
   3:  * LibFormula : a free Java formula library
   4:  * =========================================
   5:  *
   6:  * Project Info:  http://reporting.pentaho.org/libformula/
   7:  *
   8:  * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors.
   9:  *
  10:  * This library is free software; you can redistribute it and/or modify it under the terms
  11:  * of the GNU Lesser General Public License as published by the Free Software Foundation;
  12:  * either version 2.1 of the License, or (at your option) any later version.
  13:  *
  14:  * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  15:  * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  16:  * See the GNU Lesser General Public License for more details.
  17:  *
  18:  * You should have received a copy of the GNU Lesser General Public License along with this
  19:  * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20:  * Boston, MA 02111-1307, USA.
  21:  *
  22:  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
  23:  * in the United States and other countries.]
  24:  *
  25:  *
  26:  * ------------
  27:  * $Id: FunctionRegistry.java 2716 2007-04-01 13:51:58Z taqua $
  28:  * ------------
  29:  * (C) Copyright 2006-2007, by Pentaho Corporation.
  30:  */
  31: package org.jfree.formula.function;
  32: 
  33: /**
  34:  * The function registry contains all information about all function available.
  35:  * It is also the central point from where to get function meta-data or where
  36:  * to instantiate functions.
  37:  *
  38:  * All functions are queried by their cannonical name.
  39:  *
  40:  * @author Thomas Morgner
  41:  */
  42: public interface FunctionRegistry
  43: {
  44:   public FunctionCategory[] getCategories();
  45:   public Function[] getFunctions();
  46:   public Function[] getFunctionsByCategory(FunctionCategory category);
  47:   public String[] getFunctionNames();
  48:   public String[] getFunctionNamesByCategory(FunctionCategory category);
  49: 
  50:   public Function createFunction(String name);
  51:   public FunctionDescription getMetaData (String name);
  52: }