graphql.execution

Class ValuesResolver

java.lang.Object

graphql.execution.ValuesResolver

public class ValuesResolver
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
ValuesResolver()

Method Summary

Modifier and Type	Method and Description
java.util.Map<java.lang.String,java.lang.Object>	coerceArgumentValues(GraphQLSchema schema, java.util.List<VariableDefinition> variableDefinitions, java.util.Map<java.lang.String,java.lang.Object> variableValues) The http://facebook.github.io/graphql/#sec-Coercing-Variable-Values says :
java.util.Map<java.lang.String,java.lang.Object>	getArgumentValues(GraphqlFieldVisibility fieldVisibility, java.util.List<GraphQLArgument> argumentTypes, java.util.List<Argument> arguments, java.util.Map<java.lang.String,java.lang.Object> variables)
java.util.Map<java.lang.String,java.lang.Object>	getArgumentValues(java.util.List<GraphQLArgument> argumentTypes, java.util.List<Argument> arguments, java.util.Map<java.lang.String,java.lang.Object> variables)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ValuesResolver

public ValuesResolver()

Method Detail

coerceArgumentValues

public java.util.Map<java.lang.String,java.lang.Object> coerceArgumentValues(GraphQLSchema schema,
                                                                             java.util.List<VariableDefinition> variableDefinitions,
                                                                             java.util.Map<java.lang.String,java.lang.Object> variableValues)

The http://facebook.github.io/graphql/#sec-Coercing-Variable-Values says :

 1. Let coercedValues be an empty unordered Map.
 2. Let variableDefinitions be the variables defined by operation.
 3. For each variableDefinition in variableDefinitions:
      a. Let variableName be the name of variableDefinition.
      b. Let variableType be the expected type of variableDefinition.
      c. Let defaultValue be the default value for variableDefinition.
      d. Let value be the value provided in variableValues for the name variableName.
      e. If value does not exist (was not provided in variableValues):
          i. If defaultValue exists (including null):
              1. Add an entry to coercedValues named variableName with the value defaultValue.
          ii. Otherwise if variableType is a Non‐Nullable type, throw a query error.
          iii. Otherwise, continue to the next variable definition.
      f. Otherwise, if value cannot be coerced according to the input coercion rules of variableType, throw a query error.
      g. Let coercedValue be the result of coercing value according to the input coercion rules of variableType.
      h. Add an entry to coercedValues named variableName with the value coercedValue.
 4. Return coercedValues.
 

Parameters:

schema - the schema

variableDefinitions - the variable definitions

variableValues - the supplied variables

Returns:

coerced variable values as a map

getArgumentValues

public java.util.Map<java.lang.String,java.lang.Object> getArgumentValues(java.util.List<GraphQLArgument> argumentTypes,
                                                                          java.util.List<Argument> arguments,
                                                                          java.util.Map<java.lang.String,java.lang.Object> variables)

getArgumentValues

public java.util.Map<java.lang.String,java.lang.Object> getArgumentValues(GraphqlFieldVisibility fieldVisibility,
                                                                          java.util.List<GraphQLArgument> argumentTypes,
                                                                          java.util.List<Argument> arguments,
                                                                          java.util.Map<java.lang.String,java.lang.Object> variables)