Package com.sap.cds.ql.cqn

Interface CqnFunc

All Superinterfaces:

CqnToken, CqnValue, JSONizable

All Known Subinterfaces:

BooleanFunction, CqnContainmentTest, CqnWindowFunc, FunctionCall<T>, WindowFunctionCall<T>

public interface CqnFunc
extends CqnValue

Method Summary

Modifier and Type	Method	Description
default void	accept(CqnVisitor visitor)	Traverses the expression tree represented by this token with a given visitor.
List<CqnValue>	args()	Returns the arguments of this function call.
default CqnFunc	asFunction()	Casts this value to CqnFunc.
String	func()	Returns the name of the function to be called.
default boolean	isFunction()	Returns true if this is a CqnFunc.

Methods inherited from interface com.sap.cds.ql.cqn.CqnToken

tokens

Methods inherited from interface com.sap.cds.ql.cqn.CqnValue

as, asExpression, asList, asLiteral, asNullValue, asParameter, asPlain, asRef, isExpression, isList, isLiteral, isNullValue, isParameter, isPlain, isRef, ofLiteral, ofRef, type

Methods inherited from interface com.sap.cds.JSONizable

toJson

Method Details

func

String func()

Returns the name of the function to be called.

Returns:

the function name

args

List<CqnValue> args()

Returns the arguments of this function call.

Returns:

the list of arguments

isFunction

default boolean isFunction()

Description copied from interface: CqnValue

Returns true if this is a CqnFunc.

Specified by:

isFunction in interface CqnValue

Returns:

true if this is a function, otherwise false

asFunction

default CqnFunc asFunction()

Description copied from interface: CqnValue

Casts this value to CqnFunc.

Specified by:

asFunction in interface CqnValue

Returns:

this value as a function

accept

default void accept(CqnVisitor visitor)

Description copied from interface: CqnToken

Traverses the expression tree represented by this token with a given visitor. The traversal order is depth-first. If this token has child nodes they are traversed first by dispatching the visitor to the children's accept methods. Afterwards this token is passed to the visitor's visit method specific for this token's type.

Specified by:

accept in interface CqnToken

Parameters:

visitor - the CqnVisitor