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.query;
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.Query;
033import lucee.runtime.type.UDF;
034
035
036public final class QueryFilter extends BIF {
037
038        private static final long serialVersionUID = 6823791561366291738L;
039
040        public static Query call(PageContext pc , Query qry, UDF udf) throws PageException {
041                return _call(pc, qry, udf, false, 20);
042        }
043        public static Query call(PageContext pc , Query qry, UDF udf, boolean parallel) throws PageException {
044                return _call(pc, qry, udf, parallel, 20);
045        }
046
047        public static Query call(PageContext pc , Query qry, UDF udf, boolean parallel, double maxThreads) throws PageException {
048                return _call(pc, qry, udf, parallel, (int)maxThreads);
049        }
050
051        public static Query _call(PageContext pc , Query qry, UDF filter, boolean parallel, int maxThreads) throws PageException {      
052
053                // check UDF return type
054                int type = filter.getReturnType();
055                if(type!=CFTypes.TYPE_BOOLEAN && type!=CFTypes.TYPE_ANY)
056                        throw new ExpressionException("invalid return type ["+filter.getReturnTypeAsString()+"] for UDF Filter, valid return types are [boolean,any]");
057                
058                return (Query) Filter._call(pc, qry, filter, parallel, maxThreads);
059        }
060        
061        @Override
062        public Object invoke(PageContext pc, Object[] args) throws PageException {
063                
064                if(args.length==2)
065                        return call(pc, Caster.toQuery(args[0]), Caster.toFunction(args[1]));
066                if(args.length==3)
067                        return call(pc, Caster.toQuery(args[0]), Caster.toFunction(args[1]), Caster.toBooleanValue(args[2]));
068                if(args.length==4)
069                        return call(pc, Caster.toQuery(args[0]), Caster.toFunction(args[1]), Caster.toBooleanValue(args[2]), Caster.toDoubleValue(args[3]));
070                
071                throw new FunctionException(pc, "QueryFilter", 2, 4, args.length);
072        }
073}