SlingScalarConverter (Apache Sling GraphQL Core 0.0.24 API)

```
@ConsumerType
public interface SlingScalarConverter<T,X>
```
A service that parses and serializes a custom GraphQL Scalar by converting between an eXternal type X an an inTernal one T. Instances of this service must have a NAME_SERVICE_PROPERTY service property which is the name of the scalar type.

Field Summary

Fields
Modifier and Type Field Description

static String NAME_SERVICE_PROPERTY

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`T`	`parseValue(X input)`	Parse an external value (a query argument for example) into its internal representation
`X`	`serialize(T value)`	Serialize an internal value (provided by a `SlingDataFetcher` into its external representation.

- Field Detail
  - NAME_SERVICE_PROPERTY
```
static final String NAME_SERVICE_PROPERTY
```
    See Also:
    
    Constant Field Values
- Method Detail
  - parseValue
```
@Nullable
T parseValue(@Nullable
             X input)
      throws ScalarConversionException
```
    Parse an external value (a query argument for example) into its internal representation
    
    Parameters:
    
    input - the external value to parse
    
    Returns:
    
    the internal representation of the passed input
    
    Throws:
    
    ScalarConversionException - if the parsing operation fails
  - serialize
```
@Nullable
X serialize(@Nullable
            T value)
     throws ScalarConversionException
```
    Serialize an internal value (provided by a SlingDataFetcher into its external representation.
    
    Parameters:
    
    value - the internal value
    
    Returns:
    
    the external representation of the internal value
    
    Throws:
    
    ScalarConversionException - if the serialization operation fails