Class OrderedMap

A procedure used to represent a FLWOR expression with an order by clause. (ValuesMap is used for FLWOR expression that don't have an order by clause.) As returned by the parser:

 for $x1 in exp1, $x2 in exp2 where cond order by comparator1 ... return body
 

is represented as

 ordered-map(tuple-sequence, body-function,
             comparator-function1, flags1, collation1, ...)
 

Here tuple-sequence is an expression that returns a sequence of tuples, which are currently implemnted as Java Object[] arrays. After inlining we get:

 ordered-map(tuple-sequence.
   OrderedTuples.make$V(body-function,
     new Object[]{comparator-function1, flags1, collation1, ...}))
 

A future optimization would be to create an instance of a new sub-class of OrderedTuples. Then the body-function and comparator-functions could be compiled as methods to that class. That wins especially if it saves us having to create extra frame classes.

public static final OrderedMap orderedMap

public void apply(CallContext ctx)
            throws Throwable

public void compile(ApplyExp exp,
                    Compilation comp,
                    Target target)

public Type getReturnType(Expression[] args)

public Expression inline(ApplyExp exp,
                         ExpWalker walker)

public static Object[] makeTuple$V(Object[] values)