/*
// $Id: //open/mondrian-release/3.2/src/main/mondrian/olap/fun/MemberLevelFunDef.java#1 $
// This software is subject to the terms of the Eclipse Public License v1.0
// Agreement, available at the following URL:
// http://www.eclipse.org/legal/epl-v10.html.
// Copyright (C) 2006-2007 Julian Hyde
// All Rights Reserved.
// You must accept the terms of that agreement to use this software.
*/
package mondrian.olap.fun;
import mondrian.olap.type.Type;
import mondrian.olap.type.LevelType;
import mondrian.olap.*;
import mondrian.calc.Calc;
import mondrian.calc.ExpCompiler;
import mondrian.calc.MemberCalc;
import mondrian.calc.impl.AbstractLevelCalc;
import mondrian.mdx.ResolvedFunCall;
/**
* Definition of the <code><Member>.Level</code> MDX builtin function.
*
* @author jhyde
* @version $Id: //open/mondrian-release/3.2/src/main/mondrian/olap/fun/MemberLevelFunDef.java#1 $
* @since Mar 23, 2006
*/
public class MemberLevelFunDef extends FunDefBase {
static final MemberLevelFunDef instance = new MemberLevelFunDef();
private MemberLevelFunDef() {
super("Level", "Returns a member's level.", "plm");
}
public Type getResultType(Validator validator, Exp[] args) {
final Type argType = args[0].getType();
return LevelType.forType(argType);
}
public Calc compileCall(ResolvedFunCall call, ExpCompiler compiler) {
final MemberCalc memberCalc =
compiler.compileMember(call.getArg(0));
return new CalcImpl(call, memberCalc);
}
public static class CalcImpl extends AbstractLevelCalc {
private final MemberCalc memberCalc;
public CalcImpl(Exp exp, MemberCalc memberCalc) {
super(exp, new Calc[] {memberCalc});
this.memberCalc = memberCalc;
}
public Level evaluateLevel(Evaluator evaluator) {
Member member = memberCalc.evaluateMember(evaluator);
return member.getLevel();
}
}
}
// End MemberLevelFunDef.java