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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: }