CqnFunc (cds4j:api 1.34.2 API)

All Superinterfaces:

CqnToken, CqnValue, JSONizable

All Known Subinterfaces:

BooleanFunction, CqnContainmentTest, FunctionCall<T>
```
public interface CqnFunc
extends CqnValue
```

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
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, ofRef, type

Methods inherited from interface com.sap.cds.JSONizable
toJson

- Method Detail
  - 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