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 **/
019/**
020 * Implements the CFML Function arrayavg
021 */
022package lucee.runtime.functions.struct;
023
024import lucee.commons.lang.CFTypes;
025import lucee.runtime.PageContext;
026import lucee.runtime.exp.ExpressionException;
027import lucee.runtime.exp.FunctionException;
028import lucee.runtime.exp.PageException;
029import lucee.runtime.functions.BIF;
030import lucee.runtime.functions.closure.Filter;
031import lucee.runtime.op.Caster;
032import lucee.runtime.type.Struct;
033import lucee.runtime.type.UDF;
034
035
036public final class StructFilter extends BIF {
037
038        public static Struct call(PageContext pc , Struct sct, UDF udf) throws PageException {
039                return _call(pc, sct, udf, false, 20);
040        }
041        public static Struct call(PageContext pc , Struct sct, UDF udf, boolean parallel) throws PageException {
042                return _call(pc, sct, udf, parallel, 20);
043        }
044
045        public static Struct call(PageContext pc , Struct sct, UDF udf, boolean parallel, double maxThreads) throws PageException {
046                return _call(pc, sct, udf, parallel, (int)maxThreads);
047        }
048        
049        
050        public static Struct _call(PageContext pc , Struct sct, UDF filter, boolean parallel, int maxThreads) throws PageException {    
051
052                // check UDF return type
053                int type = filter.getReturnType();
054                if(type!=CFTypes.TYPE_BOOLEAN && type!=CFTypes.TYPE_ANY)
055                        throw new ExpressionException("invalid return type ["+filter.getReturnTypeAsString()+"] for UDF Filter, valid return types are [boolean,any]");
056                
057                return (Struct) Filter._call(pc, sct, filter, parallel, maxThreads);
058        }
059        
060        @Override
061        public Object invoke(PageContext pc, Object[] args) throws PageException {
062                
063                if(args.length==2)
064                        return call(pc, Caster.toStruct(args[0]), Caster.toFunction(args[1]));
065                if(args.length==3)
066                        return call(pc, Caster.toStruct(args[0]), Caster.toFunction(args[1]), Caster.toBooleanValue(args[2]));
067                if(args.length==4)
068                        return call(pc, Caster.toStruct(args[0]), Caster.toFunction(args[1]), Caster.toBooleanValue(args[2]), Caster.toDoubleValue(args[3]));
069                
070                throw new FunctionException(pc, "StructFilter", 2, 4, args.length);
071        }
072}