/*
* Copyright (C) 2000 - 2012 TagServlet Ltd
*
* This file is part of Open BlueDragon (OpenBD) CFML Server Engine.
*
* OpenBD is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* Free Software Foundation,version 3.
*
* OpenBD is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with OpenBD. If not, see http://www.gnu.org/licenses/
*
* Additional permission under GNU GPL version 3 section 7
*
* If you modify this Program, or any covered work, by linking or combining
* it with any of the JARS listed in the README.txt (or a modified version of
* (that library), containing parts covered by the terms of that JAR, the
* licensors of this Program grant you additional permission to convey the
* resulting work.
* README.txt @ http://www.openbluedragon.org/license/README.txt
*
* http://openbd.org/
* $Id: structFilter.java 2229 2012-08-05 20:24:40Z alan $
*/
package com.naryx.tagfusion.expression.function.struct;
import java.util.ArrayList;
import java.util.List;
import com.naryx.tagfusion.cfm.engine.cfArgStructData;
import com.naryx.tagfusion.cfm.engine.cfData;
import com.naryx.tagfusion.cfm.engine.cfSession;
import com.naryx.tagfusion.cfm.engine.cfStringData;
import com.naryx.tagfusion.cfm.engine.cfStructData;
import com.naryx.tagfusion.cfm.engine.cfmRunTimeException;
import com.naryx.tagfusion.cfm.parser.script.userDefinedFunction;
import com.naryx.tagfusion.expression.function.functionBase;
public class structFilter extends functionBase {
private static final long serialVersionUID = 1L;
public structFilter() {
min = max = 2;
setNamedParams( new String[]{ "struct", "function" } );
}
public String[] getParamInfo(){
return new String[]{
"Structure Object",
"function to loop over the data, passing in the element as the parameter to each. each function call should return true or false; function(key,element){}"
};
}
public java.util.Map getInfo(){
return makeInfo(
"structure",
"Used to loop over the structure to create a new structure based on the inner function applied to each element that will return true/false if it is to be included",
ReturnType.STRUCTURE );
}
public cfData execute(cfSession _session, cfArgStructData argStruct) throws cfmRunTimeException {
cfData data = getNamedParam(argStruct, "struct");
cfData func = getNamedParam(argStruct, "function" );
if ( func.getDataType() != cfData.CFUDFDATA )
throwException(_session, "the parameter is not a function");
if (data.getDataType() == cfData.CFSTRUCTDATA) {
cfStructData arrData = (cfStructData)data;
cfStructData newArr = new cfStructData();
userDefinedFunction udf = (userDefinedFunction)func;
List<cfData> args = new ArrayList<cfData>(1);
cfData result;
Object[] keys = arrData.keys();
for ( int x = 0; x < keys.length; x++ ){
args.clear();
String k = String.valueOf(keys[x]);
cfData d = arrData.getData( (String)keys[x] );
args.add( new cfStringData(k) );
args.add( d );
result = udf.execute( _session, args );
if ( result.isBooleanConvertible() && result.getBoolean() )
newArr.setData( k, d );
}
return newArr;
} else {
throwException(_session, "the parameter is not an structure");
}
return null;
}
}