/**
* Configures Gson for custom serialization or deserialization for an inheritance type hierarchy.
* This method combines the registration of a {@link TypeAdapter}, {@link JsonSerializer} and a
* {@link JsonDeserializer}. If a type adapter was previously registered for the specified type
* hierarchy, it is overridden. If a type adapter is registered for a specific type in the type
* hierarchy, it will be invoked instead of the one registered for the type hierarchy.
*
* @param baseType the class definition for the type adapter being registered for the base class
* or interface
* @param typeAdapter This object must implement at least one of {@link TypeAdapter}, {@link
* JsonSerializer} or {@link JsonDeserializer} interfaces.
* @return a reference to this {@code GsonBuilder} object to fulfill the "Builder" pattern
* @since 1.7
*/
@SuppressWarnings({"unchecked", "rawtypes"})
public GsonBuilder registerTypeHierarchyAdapter(Class<?> baseType, Object typeAdapter) {
$Gson$Preconditions.checkArgument(
typeAdapter instanceof JsonSerializer<?>
|| typeAdapter instanceof JsonDeserializer<?>
|| typeAdapter instanceof TypeAdapter<?>);
if (typeAdapter instanceof JsonDeserializer || typeAdapter instanceof JsonSerializer) {
hierarchyFactories.add(0, TreeTypeAdapter.newTypeHierarchyFactory(baseType, typeAdapter));
}
if (typeAdapter instanceof TypeAdapter<?>) {
factories.add(TypeAdapters.newTypeHierarchyFactory(baseType, (TypeAdapter) typeAdapter));
}
return this;
}
