ScalarMarshaller

Provides an SPI to allow different scalar datatypes to be marshalled to and from GraphQL scalar types.

The implementations are called following a chain-of-responsibility pattern, first one matching is used. Use javax.annotation.Priority (with org.apache.causeway.applib.annotation.PriorityPrecedence values) to override the framework-provided defaults, earliest wins.

API

ScalarMarshaller.java

interface ScalarMarshaller<K> {
  boolean handles(Class<?> javaClass)     (1)
  GraphQLScalarType getGqlScalarType()     (2)
  K unmarshal(Object graphValue, Class<?> targetType)     (3)
}

1	handles(Class) Whether this marshaller is able to marshall/unmarshall the provided Java class.
2	getGqlScalarType() The corresponding GraphQL scalar type for the Java-class.
3	unmarshal(Object, Class) Unmarshal the provided graphQL value into its Java equivalent.

Members

handles(Class)

Whether this marshaller is able to marshall/unmarshall the provided Java class.

getGqlScalarType()

The corresponding GraphQL scalar type for the Java-class.

unmarshal(Object, Class)

Unmarshal the provided graphQL value into its Java equivalent.