001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.commons.io.res.util; 020 021import lucee.commons.lang.CFTypes; 022import lucee.runtime.exp.ExpressionException; 023import lucee.runtime.type.FunctionArgument; 024import lucee.runtime.type.UDF; 025 026public abstract class UDFFilterSupport { 027 028 protected UDF udf; 029 protected Object[] args=new Object[1]; 030 031 public UDFFilterSupport(UDF udf) throws ExpressionException{ 032 this.udf=udf; 033 034 // check UDF return type 035 int type = udf.getReturnType(); 036 if(type!=CFTypes.TYPE_BOOLEAN && type!=CFTypes.TYPE_ANY) 037 throw new ExpressionException("invalid return type ["+udf.getReturnTypeAsString()+"] for UDF Filter, valid return types are [boolean,any]"); 038 039 // check UDF arguments 040 FunctionArgument[] args = udf.getFunctionArguments(); 041 if(args.length>1) 042 throw new ExpressionException("UDF filter has to many arguments ["+args.length+"], should have at maximum 1 argument"); 043 044 if(args.length==1){ 045 type=args[0].getType(); 046 if(type!=CFTypes.TYPE_STRING && type!=CFTypes.TYPE_ANY) 047 throw new ExpressionException("invalid type ["+args[0].getTypeAsString()+"] for first argument of UDF Filter, valid return types are [string,any]"); 048 } 049 050 051 } 052 053 @Override 054 public String toString() { 055 return "UDFFilter:"+udf; 056 } 057}