package railo.commons.io.res.util;
import railo.commons.lang.CFTypes;
import railo.runtime.exp.ExpressionException;
import railo.runtime.type.FunctionArgument;
import railo.runtime.type.UDF;
public abstract class UDFFilterSupport {
protected UDF udf;
protected Object[] args=new Object[1];
public UDFFilterSupport(UDF udf) throws ExpressionException{
this.udf=udf;
// check UDF return type
int type = udf.getReturnType();
if(type!=CFTypes.TYPE_BOOLEAN && type!=CFTypes.TYPE_ANY)
throw new ExpressionException("invalid return type ["+udf.getReturnTypeAsString()+"] for UDF Filter, valid return types are [boolean,any]");
// check UDF arguments
FunctionArgument[] args = udf.getFunctionArguments();
if(args.length>1)
throw new ExpressionException("UDF filter has to many arguments ["+args.length+"], should have at maximum 1 argument");
if(args.length==1){
type=args[0].getType();
if(type!=CFTypes.TYPE_STRING && type!=CFTypes.TYPE_ANY)
throw new ExpressionException("invalid type ["+args[0].getTypeAsString()+"] for first argument of UDF Filter, valid return types are [string,any]");
}
}
@Override
public String toString() {
return "UDFFilter:"+udf;
}
}