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MONDRIAN: Implement ValidMeasure function (contributed by Matthew Cam…
…pbell);
factor out SetToStr and TupleToStr functions into their own files.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| /* | ||
| // $Id$ | ||
| // This software is subject to the terms of the Common Public License | ||
| // Agreement, available at the following URL: | ||
| // http://www.opensource.org/licenses/cpl.html. | ||
| // Copyright (C) 2006-2006 Julian Hyde | ||
| // All Rights Reserved. | ||
| // You must accept the terms of that agreement to use this software. | ||
| */ | ||
| package mondrian.olap.fun; | ||
|
|
||
| import mondrian.calc.Calc; | ||
| import mondrian.calc.ExpCompiler; | ||
| import mondrian.calc.ListCalc; | ||
| import mondrian.calc.impl.AbstractStringCalc; | ||
| import mondrian.mdx.ResolvedFunCall; | ||
| import mondrian.olap.Evaluator; | ||
| import mondrian.olap.Member; | ||
|
|
||
| import java.util.List; | ||
|
|
||
| /** | ||
| * Definition of the <code>SetToStr</code> MDX function. | ||
| * | ||
| * @author jhyde | ||
| * @version $Id$ | ||
| * @since Aug 3, 2006 | ||
| */ | ||
| class SetToStrFunDef extends FunDefBase { | ||
| public static final FunDefBase instance = new SetToStrFunDef(); | ||
|
|
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| private SetToStrFunDef() { | ||
| super("SetToStr", "SetToStr(<Set>)", "Constructs a string from a set.", "fSx"); | ||
| } | ||
|
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| public Calc compileCall(ResolvedFunCall call, ExpCompiler compiler) { | ||
| final ListCalc listCalc = | ||
| compiler.compileList(call.getArg(0)); | ||
| return new AbstractStringCalc(call, new Calc[] {listCalc}) { | ||
| public String evaluateString(Evaluator evaluator) { | ||
| final List list = listCalc.evaluateList(evaluator); | ||
| return strToSet(list); | ||
| } | ||
| }; | ||
| } | ||
|
|
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| static String strToSet(List list) { | ||
| StringBuffer buf = new StringBuffer(); | ||
| buf.append("{"); | ||
| for (int i = 0; i < list.size(); i++) { | ||
| if (i > 0) { | ||
| buf.append(", "); | ||
| } | ||
| final Object o = list.get(i); | ||
| appendMemberOrTuple(buf, o); | ||
| } | ||
| buf.append("}"); | ||
| return buf.toString(); | ||
| } | ||
|
|
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| static void appendMemberOrTuple( | ||
| StringBuffer buf, | ||
| Object memberOrTuple) { | ||
| if (memberOrTuple instanceof Member) { | ||
| Member member = (Member) memberOrTuple; | ||
| buf.append(member.getUniqueName()); | ||
| } else { | ||
| Member[] members = (Member[]) memberOrTuple; | ||
| appendTuple(buf, members); | ||
| } | ||
| } | ||
| } | ||
|
|
||
| // End SetToStrFunDef.java |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| /* | ||
| // $Id$ | ||
| // This software is subject to the terms of the Common Public License | ||
| // Agreement, available at the following URL: | ||
| // http://www.opensource.org/licenses/cpl.html. | ||
| // Copyright (C) 2006-2006 Julian Hyde | ||
| // All Rights Reserved. | ||
| // You must accept the terms of that agreement to use this software. | ||
| */ | ||
| package mondrian.olap.fun; | ||
|
|
||
| import mondrian.calc.Calc; | ||
| import mondrian.calc.ExpCompiler; | ||
| import mondrian.calc.MemberCalc; | ||
| import mondrian.calc.TupleCalc; | ||
| import mondrian.calc.impl.AbstractStringCalc; | ||
| import mondrian.mdx.ResolvedFunCall; | ||
| import mondrian.olap.type.TypeUtil; | ||
| import mondrian.olap.Evaluator; | ||
| import mondrian.olap.Member; | ||
|
|
||
| /** | ||
| * Definition of the <code>TupleToStr</code> MDX function. | ||
| * | ||
| * @author jhyde | ||
| * @version $Id$ | ||
| * @since Aug 3, 2006 | ||
| */ | ||
| class TupleToStrFunDef extends FunDefBase { | ||
| static final TupleToStrFunDef instance = new TupleToStrFunDef(); | ||
|
|
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| private TupleToStrFunDef() { | ||
| super("TupleToStr", "TupleToStr(<Tuple>)", "Constructs a string from a tuple.", "fSt"); | ||
| } | ||
|
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| public Calc compileCall(ResolvedFunCall call, ExpCompiler compiler) { | ||
| if (TypeUtil.couldBeMember(call.getArg(0).getType())) { | ||
| final MemberCalc memberCalc = | ||
| compiler.compileMember(call.getArg(0)); | ||
| return new AbstractStringCalc(call, new Calc[] {memberCalc}) { | ||
| public String evaluateString(Evaluator evaluator) { | ||
| final Member member = | ||
| memberCalc.evaluateMember(evaluator); | ||
| if (member.isNull()) { | ||
| return ""; | ||
| } | ||
| StringBuffer buf = new StringBuffer(); | ||
| buf.append(member.getUniqueName()); | ||
| return buf.toString(); | ||
| } | ||
| }; | ||
| } else { | ||
| final TupleCalc tupleCalc = | ||
| compiler.compileTuple(call.getArg(0)); | ||
| return new AbstractStringCalc(call, new Calc[] {tupleCalc}) { | ||
| public String evaluateString(Evaluator evaluator) { | ||
| final Member[] members = | ||
| tupleCalc.evaluateTuple(evaluator); | ||
| if (members == null) { | ||
| return ""; | ||
| } | ||
| StringBuffer buf = new StringBuffer(); | ||
| SetToStrFunDef.appendTuple(buf, members); | ||
| return buf.toString(); | ||
| } | ||
| }; | ||
| } | ||
| } | ||
|
|
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| } | ||
|
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| // End TupleToStrFunDef.java |
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