Package com.sap.cds.ql.cqn

Interface CqnValue

All Superinterfaces:
CqnToken, JSONizable
All Known Subinterfaces:
BooleanFunction, BooleanValue, CqnArithmeticExpression, CqnArithmeticNegation, CqnBetweenPredicate, CqnBooleanLiteral, CqnCaseExpression, CqnComparisonPredicate, CqnConnectivePredicate, CqnContainmentTest, CqnElementRef, CqnEtagPredicate, CqnExistsSubquery, CqnExpression, CqnFunc, CqnInPredicate, CqnInSubquery, CqnListValue, CqnLiteral<T>, CqnMatchPredicate, CqnNegation, CqnNullValue, CqnNumericLiteral<N>, CqnParameter, CqnPassThroughSearchPredicate, CqnPlain, CqnPredicate, CqnSearchPredicate, CqnSearchTermPredicate, CqnStringLiteral, CqnStructuredLiteral, CqnTemporalLiteral<E>, CqnVector, CqnWindowFunc, ElementRef<T>, FunctionCall<T>, Literal<T>, NullValue, Parameter<T>, Predicate, SelectableValue, Value<T>, WindowFunctionCall<T>
public interface CqnValue extends CqnToken

  • Method Details

    • type

      default Optional<String> type()
      Returns the optional CDS type of this value.
      Returns:
      the optional CDS type

    • isRef

      default boolean isRef()
      Returns true if this is a CqnElementRef.
      Returns:
      true if this is an element ref, otherwise false

    • isExpression

      default boolean isExpression()
      Returns true if this is a CqnExpression.
      Returns:
      true if this is an expression, otherwise false

    • isFunction

      default boolean isFunction()
      Returns true if this is a CqnFunc.
      Returns:
      true if this is a function, otherwise false

    • isLiteral

      default boolean isLiteral()
      Returns true if this is a CqnLiteral.
      Returns:
      true if this is a literal, otherwise false

    • isNullValue

      default boolean isNullValue()
      Returns true if this is a CqnNullValue.
      Returns:
      true if this is a null value, otherwise false

    • isParameter

      default boolean isParameter()
      Returns true if this is a CqnParameter.
      Returns:
      true if this is a parameter, otherwise false

    • isPlain

      default boolean isPlain()
      Returns true if this is a CqnPlain value.
      Returns:
      true if this is a plain value, otherwise false

    • isList

      default boolean isList()
      Returns true if this is a CqnListValue value.
      Returns:
      true if this is a list value, otherwise false

    • asRef

      default CqnElementRef asRef()
      Casts this value to CqnElementRef.
      Returns:
      this value as an element ref
      Throws:
      ClassCastException - if this value is not an element ref

    • ofRef

      default Stream<CqnElementRef> ofRef()

    • asExpression

      default CqnExpression asExpression()
      Casts this value to CqnExpression.
      Returns:
      this value as an expression
      Throws:
      ClassCastException - if this value is not an expression

    • asFunction

      default CqnFunc asFunction()
      Casts this value to CqnFunc.
      Returns:
      this value as a function
      Throws:
      ClassCastException - if this value is not a function

    • asLiteral

      default CqnLiteral<?> asLiteral()
      Casts this value to CqnLiteral.
      Returns:
      this value as a literal
      Throws:
      ClassCastException - if this value is not a literal

    • ofLiteral

      default Stream<CqnLiteral<?>> ofLiteral()

    • asNullValue

      default CqnNullValue asNullValue()
      Casts this value to CqnNullValue.
      Returns:
      this value as a null value
      Throws:
      ClassCastException - if this value is not a null value

    • asParameter

      default CqnParameter asParameter()
      Casts this value to CqnParameter.
      Returns:
      this value as a parameter
      Throws:
      ClassCastException - if this value is not a parameter

    • asPlain

      default CqnPlain asPlain()
      Casts this value to CqnPlain.
      Returns:
      this value as a plain value
      Throws:
      ClassCastException - if this value is not a plain value

    • asList

      default CqnListValue asList()
      Casts this value to CqnListValue.
      Returns:
      this value as a list value
      Throws:
      ClassCastException - if this value is not a list value

    • as

      default <T extends CqnValue> T as(Class<T> type)
      Casts this type to the given type.
      Type Parameters:
      T - the return type
      Parameters:
      type - the subtype of CqnValue to cast to
      Returns:
      this type casted to the given type class