OptionalType (Smithy API 1.47.0)

java.lang.Object
- software.amazon.smithy.rulesengine.language.evaluation.type.OptionalType

All Implemented Interfaces:

Type
```
public final class OptionalType
extends java.lang.Object
```
The "optional" type, a container for a type that may or may not be present.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(java.lang.Object obj)`
`BooleanType`	`expectBooleanType()`
`OptionalType`	`expectOptionalType()`
`StringType`	`expectStringType()`
`int`	`hashCode()`
`Type`	`inner()`	Gets the optional's contained value.
`boolean`	`isA(Type type)`	Returns true if this type matches the target type.
`Type`	`provenTruthy()`	When used in the context of a condition, the condition can only match if the value was truthful.
`java.lang.String`	`toString()`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface software.amazon.smithy.rulesengine.language.evaluation.type.Type
expectAnyType, expectArrayType, expectEmptyType, expectEndpointType, expectIntegerType, expectRecordType, expectTupleType

- Method Detail
  - isA
```
public boolean isA(Type type)
```
    Description copied from interface: Type
    
    Returns true if this type matches the target type.
    
    Parameters:
    
    type - the target type to match.
    
    Returns:
    
    true if the types match, false otherwise.
  - provenTruthy
```
public Type provenTruthy()
```
    Description copied from interface: Type
    
    When used in the context of a condition, the condition can only match if the value was truthful. This means that a certain expression can be a different type, for example, OptionalType<T> will become T.
    
    Returns:
    
    The type, given that it has been proven truthy
  - inner
```
public Type inner()
```
    Gets the optional's contained value.
    
    Returns:
    
    the optional's value.
  - expectStringType
```
public StringType expectStringType()
                            throws InnerParseError
```
    Throws:
    
    InnerParseError
  - expectBooleanType
```
public BooleanType expectBooleanType()
                              throws InnerParseError
```
    Throws:
    
    InnerParseError
  - expectOptionalType
```
public OptionalType expectOptionalType()
```
  - equals
```
public boolean equals(java.lang.Object obj)
```
  - hashCode
```
public int hashCode()
```
  - toString
```
public java.lang.String toString()
```