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: FunctionRegistry.java 2716 2007-04-01 13:51:58Z taqua $ 028 * ------------ 029 * (C) Copyright 2006-2007, by Pentaho Corporation. 030 */ 031 package org.jfree.formula.function; 032 033 /** 034 * The function registry contains all information about all function available. 035 * It is also the central point from where to get function meta-data or where 036 * to instantiate functions. 037 * 038 * All functions are queried by their cannonical name. 039 * 040 * @author Thomas Morgner 041 */ 042 public interface FunctionRegistry 043 { 044 public FunctionCategory[] getCategories(); 045 public Function[] getFunctions(); 046 public Function[] getFunctionsByCategory(FunctionCategory category); 047 public String[] getFunctionNames(); 048 public String[] getFunctionNamesByCategory(FunctionCategory category); 049 050 public Function createFunction(String name); 051 public FunctionDescription getMetaData (String name); 052 }