Package mondrian.mdx

Class ResolvedFunCall

java.lang.Object

mondrian.olap.QueryPart

mondrian.olap.ExpBase

mondrian.mdx.ResolvedFunCall

All Implemented Interfaces:

Exp, FunCall, Walkable

public final class ResolvedFunCall
extends ExpBase
implements FunCall

A ResolvedFunCall is a function applied to a list of operands, which has been validated and resolved to a function definition.

Since:

Jan 6, 2006

Author:

jhyde

Constructor Summary

Constructors

Constructor	Description
ResolvedFunCall(FunDef funDef, Exp[] args, Type returnType)	Creates a function call.

Method Summary

Modifier and Type	Method	Description
Calc	accept(ExpCompiler compiler)	Converts this expression into an a tree of expressions which can be efficiently evaluated.
Object	accept(MdxVisitor visitor)	Accepts a visitor to this Exp.
Exp	accept(Validator validator)	Validates this expression.
ResolvedFunCall	clone()
Exp	getArg(int index)	Returns the Exp argument at the specified index.
int	getArgCount()	Returns the number of arguments.
Exp[]	getArgs()	Returns the internal array of Exp arguments.
int	getCategory()	Returns the Category of the expression.
Object[]	getChildren()	Returns an array of the object's children.
FunDef	getFunDef()	Returns the definition of the function which is being called.
String	getFunName()	Returns the name of the function.
Syntax	getSyntax()	Returns the syntax of the call.
Type	getType()	Returns the type of this expression.
String	toString()
void	unparse(PrintWriter pw)	Writes a string representation of this parse tree node to the given writer.

Methods inherited from class mondrian.olap.ExpBase

cloneArray, getTypes, unparseList

Methods inherited from class mondrian.olap.QueryPart

explain

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ResolvedFunCall

public ResolvedFunCall(FunDef funDef,
                       Exp[] args,
                       Type returnType)

Creates a function call.

Parameters:

funDef - Function definition

args - Arguments

returnType - Return type

Method Detail

toString

public String toString()

Overrides:

toString in class Object

clone

public ResolvedFunCall clone()

Specified by:

clone in interface Exp

Specified by:

clone in class ExpBase

getArg

public Exp getArg(int index)

Returns the Exp argument at the specified index.

Specified by:

getArg in interface FunCall

Parameters:

index - the index of the Exp.

Returns:

the Exp at the specified index of this array of Exp. The first Exp is at index 0.

See Also:

getArgs()

getArgs

public Exp[] getArgs()

Returns the internal array of Exp arguments.

Note: this does NOT do a copy.

Specified by:

getArgs in interface FunCall

Returns:

the array of expressions

getArgCount

public final int getArgCount()

Returns the number of arguments.

Specified by:

getArgCount in interface FunCall

Returns:

number of arguments.

See Also:

getArgs()

getFunName

public String getFunName()

Description copied from interface: FunCall

Returns the name of the function.

Specified by:

getFunName in interface FunCall

getSyntax

public Syntax getSyntax()

Description copied from interface: FunCall

Returns the syntax of the call.

Specified by:

getSyntax in interface FunCall

getChildren

public Object[] getChildren()

Description copied from interface: Walkable

Returns an array of the object's children. Those which are not Walkable are ignored.

Specified by:

getChildren in interface Walkable

Overrides:

getChildren in class QueryPart

getFunDef

public FunDef getFunDef()

Returns the definition of the function which is being called.

Returns:

function definition

getCategory

public final int getCategory()

Description copied from interface: Exp

Returns the Category of the expression.

Specified by:

getCategory in interface Exp

getType

public final Type getType()

Description copied from interface: Exp

Returns the type of this expression. Never null.

Specified by:

getType in interface Exp

accept

public Exp accept(Validator validator)

Description copied from interface: Exp

Validates this expression. The validator acts in the role of 'visitor' (see Gang of Four 'visitor pattern'), and an expression in the role of 'visitee'.

Specified by:

accept in interface Exp

Parameters:

validator - Validator contains validation context

Returns:

The validated expression; often but not always the same as this expression

unparse

public void unparse(PrintWriter pw)

Description copied from class: QueryPart

Writes a string representation of this parse tree node to the given writer.

Specified by:

unparse in interface Exp

Overrides:

unparse in class QueryPart

Parameters:

pw - writer

accept

public Calc accept(ExpCompiler compiler)

Description copied from interface: Exp

Converts this expression into an a tree of expressions which can be efficiently evaluated.

Specified by:

accept in interface Exp

Overrides:

accept in class ExpBase

Returns:

A compiled expression

accept

public Object accept(MdxVisitor visitor)

Description copied from interface: Exp

Accepts a visitor to this Exp. The implementation should generally dispatches to the MdxVisitor.visit(mondrian.olap.Query) method appropriate to the type of expression.

Specified by:

accept in interface Exp

Parameters:

visitor - Visitor