CqnLiteral (cds4j:api 1.38.7 API)

All Superinterfaces:

CqnToken, CqnValue, JSONizable

All Known Subinterfaces:

CqnBooleanLiteral, CqnNumericLiteral<N>, CqnStringLiteral, CqnStructuredLiteral, CqnTemporalLiteral<E>, Literal<T>
```
public interface CqnLiteral<T>
extends CqnValue
```
A CQN literal value of type T. Use value() to get the value.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method and Description
`default CqnBooleanLiteral`	`asBoolean()` Casts this literal to `CqnBooleanLiteral`.
`default CqnLiteral<?>`	`asLiteral()` Casts this value to `CqnLiteral`.
`default CqnNumericLiteral<?>`	`asNumber()` Casts this literal to `CqnNumericLiteral`.
`default CqnStringLiteral`	`asString()` Casts this literal to `CqnStringLiteral`.
`default CqnStructuredLiteral`	`asStructured()` Casts this literal to `CqnStructuredLiteral`.
`default CqnTemporalLiteral<?>`	`asTemporal()` Casts this literal to `CqnTemporalLiteral`.
`default boolean`	`isBoolean()` Returns `true` if this is a `CqnBooleanLiteral`.
`default boolean`	`isConstant()` Specifies if this `CqnLiteral` should be handled as a constant value during query execution.
`default boolean`	`isLiteral()` Returns `true` if this is a `CqnLiteral`.
`default boolean`	`isNumeric()` Returns `true` if this is a `CqnNumericLiteral`.
`default boolean`	`isString()` Returns `true` if this is a `CqnStringLiteral`.
`default boolean`	`isStructured()` Returns `true` if this is a `CqnStructuredLiteral`.
`default boolean`	`isTemporal()` Returns `true` if this is a `CqnTemporalLiteral`.
`T`	`value()` Returns the literal value.

Methods inherited from interface com.sap.cds.ql.cqn.CqnValue
as, asExpression, asFunction, asList, asNullValue, asParameter, asPlain, asRef, isExpression, isFunction, isList, isNullValue, isParameter, isPlain, isRef, ofRef, type

Methods inherited from interface com.sap.cds.ql.cqn.CqnToken
accept, tokens

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

- Method Detail
  - value
```
T value()
```
    Returns the literal value.
    
    Returns:
    
    the literal value
  - isConstant
```
default boolean isConstant()
```
    Specifies if this CqnLiteral should be handled as a constant value during query execution.
    
    Returns:
    
    true if the literal can be handled as a constant value
  - asLiteral
```
default CqnLiteral<?> asLiteral()
```
    Description copied from interface: CqnValue
    
    Casts this value to CqnLiteral.
    
    Specified by:
    
    asLiteral in interface CqnValue
    
    Returns:
    
    this value as a literal
  - isLiteral
```
default boolean isLiteral()
```
    Description copied from interface: CqnValue
    
    Returns true if this is a CqnLiteral.
    
    Specified by:
    
    isLiteral in interface CqnValue
    
    Returns:
    
    true if this is a literal, otherwise false
  - isBoolean
```
default boolean isBoolean()
```
    Returns true if this is a CqnBooleanLiteral.
    
    Returns:
    
    true if this is a boolean literal, otherwise false
  - isNumeric
```
default boolean isNumeric()
```
    Returns true if this is a CqnNumericLiteral.
    
    Returns:
    
    true if this is a numeric literal, otherwise false
  - isString
```
default boolean isString()
```
    Returns true if this is a CqnStringLiteral.
    
    Returns:
    
    true if this is a string literal, otherwise false
  - isTemporal
```
default boolean isTemporal()
```
    Returns true if this is a CqnTemporalLiteral.
    
    Returns:
    
    true if this is a temporal literal, otherwise false
  - isStructured
```
default boolean isStructured()
```
    Returns true if this is a CqnStructuredLiteral.
    
    Returns:
    
    true if this is a structured literal, otherwise false
  - asBoolean
```
default CqnBooleanLiteral asBoolean()
```
    Casts this literal to CqnBooleanLiteral.
    
    Returns:
    
    this literal as a boolean literal
    
    Throws:
    
    ClassCastException - if this literal is not boolean
  - asString
```
default CqnStringLiteral asString()
```
    Casts this literal to CqnStringLiteral.
    
    Returns:
    
    this literal as a string literal
    
    Throws:
    
    ClassCastException - if this literal is not a string literal
  - asNumber
```
default CqnNumericLiteral<?> asNumber()
```
    Casts this literal to CqnNumericLiteral.
    
    Returns:
    
    this literal as a numeric literal
    
    Throws:
    
    ClassCastException - if this literal is not numeric
  - asTemporal
```
default CqnTemporalLiteral<?> asTemporal()
```
    Casts this literal to CqnTemporalLiteral.
    
    Returns:
    
    this literal as a temporal literal
    
    Throws:
    
    ClassCastException - if this literal is not temporal
  - asStructured
```
default CqnStructuredLiteral asStructured()
```
    Casts this literal to CqnStructuredLiteral.
    
    Returns:
    
    this literal as a structured literal
    
    Throws:
    
    ClassCastException - if this literal is not structured

Interface CqnLiteral<T>

Method Summary

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

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

Methods inherited from interface com.sap.cds.JSONizable

Method Detail

value

isConstant

asLiteral

isLiteral

isBoolean

isNumeric

isString

isTemporal

isStructured

asBoolean

asString

asNumber

asTemporal

asStructured