graphql.schema

Interface Coercing<I,O>

public interface Coercing<I,O>

Method Summary

Modifier and Type	Method and Description
I	parseLiteral(java.lang.Object input) Called to convert a AST node
I	parseValue(java.lang.Object input) Called to resolve a input from a variable.
O	serialize(java.lang.Object input) Called to convert a result of a DataFetcher to a valid runtime value.

Method Detail

serialize

O serialize(java.lang.Object input)

Called to convert a result of a DataFetcher to a valid runtime value.

Parameters:

input - is never null

Returns:

null if not possible/invalid

parseValue

I parseValue(java.lang.Object input)

Called to resolve a input from a variable. Null if not possible.

Parameters:

input - is never null

Returns:

null if not possible/invalid

parseLiteral

I parseLiteral(java.lang.Object input)

Called to convert a AST node

Parameters:

input - is never null

Returns:

null if not possible/invalid