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 ArrayFilter
021 */
022package lucee.runtime.functions.arrays;
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.Array;
033import lucee.runtime.type.UDF;
034
035
036public final class ArrayFilter extends BIF {
037        
038        public static Array call(PageContext pc , Array array, UDF udf) throws PageException {
039                return _call(pc, array, udf, false, 20);
040        }
041        public static Array call(PageContext pc , Array array, UDF udf, boolean parallel) throws PageException {
042                return _call(pc, array, udf, parallel, 20);
043        }
044
045        public static Array call(PageContext pc , Array array, UDF udf, boolean parallel, double maxThreads) throws PageException {
046                return _call(pc, array, udf, parallel, (int)maxThreads);
047        }
048
049        public static Array _call(PageContext pc , Array array, UDF filter, boolean parallel, int maxThreads) throws PageException {
050                // check UDF return type
051                int type = filter.getReturnType();
052                if(type!=CFTypes.TYPE_BOOLEAN && type!=CFTypes.TYPE_ANY)
053                        throw new ExpressionException("invalid return type ["+filter.getReturnTypeAsString()+"] for UDF Filter; valid return types are [boolean,any]");
054                
055                return (Array) Filter._call(pc, array, filter, parallel, maxThreads);
056                
057        }
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.toArray(args[0]), Caster.toFunction(args[1]));
065                if(args.length==3)
066                        return call(pc, Caster.toArray(args[0]), Caster.toFunction(args[1]), Caster.toBooleanValue(args[2]));
067                if(args.length==4)
068                        return call(pc, Caster.toArray(args[0]), Caster.toFunction(args[1]), Caster.toBooleanValue(args[2]), Caster.toDoubleValue(args[3]));
069                
070                throw new FunctionException(pc, "ArrayFilter", 2, 4, args.length);
071                
072                
073        }
074}