CqnToken (cds4j:api 1.34.2 API)

All Superinterfaces:

JSONizable

All Known Subinterfaces:

BooleanFunction, CqnArithmeticExpression, CqnArithmeticNegation, CqnBooleanLiteral, CqnComparisonPredicate, CqnConnectivePredicate, CqnContainmentTest, CqnElementRef, CqnExistsSubquery, CqnExpand, CqnExpression, CqnFunc, CqnInline, CqnInPredicate, CqnJoin, CqnListValue, CqnLiteral<T>, CqnMatchPredicate, CqnNegation, CqnNullValue, CqnNumericLiteral<N>, CqnParameter, CqnPlain, CqnPredicate, CqnReference, CqnSearchPredicate, CqnSelect, CqnSelectList, CqnSelectListItem, CqnSelectListValue, CqnSortSpecification, CqnSource, CqnStringLiteral, CqnStructuredLiteral, CqnStructuredTypeRef, CqnTemporalLiteral<E>, CqnValue, ElementRef<T>, Expand<T>, FunctionCall<T>, Literal<T>, Parameter<T>, Predicate, Source<T>, StructuredType<T>, StructuredTypeRef, Value<T>

All Known Implementing Classes:

CqnStar, Select
```
public interface CqnToken
extends JSONizable
```

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`accept(CqnVisitor visitor)`	Traverses the expression tree represented by this token with a given `visitor`.
`default Stream<CqnToken>`	`tokens()`

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

- Method Detail
  - accept
```
void accept(CqnVisitor visitor)
```
    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.
    
    Parameters:
    
    visitor - the CqnVisitor
  - tokens
```
@Beta
default Stream<CqnToken> tokens()
```