Package graphql.execution

Interface Summary

Interface	Description
Async.CombinedBuilder<T>	A builder of materialized objects or CompletableFutures than can present a promise to the list of them
DataFetcherExceptionHandler	This is called when an exception is thrown during DataFetcher.get(DataFetchingEnvironment) execution
DataLoaderDispatchStrategy
EngineRunningObserver	This class lets you observe the running state of the graphql-java engine.
ExecutionIdProvider	A provider of ExecutionIds
ValueUnboxer	A value unboxer takes values that are wrapped in classes like Optional / OptionalInt etc..

Class Summary

Class	Description
AbstractAsyncExecutionStrategy
Async
AsyncExecutionStrategy	The standard graphql execution strategy that runs fields asynchronously non-blocking.
AsyncSerialExecutionStrategy	Async non-blocking execution, but serial: only one field at the time will be resolved.
CoercedVariables	Holds coerced variables, that is their values are now in a canonical form.
DataFetcherExceptionHandlerParameters	The parameters available to DataFetcherExceptionHandlers
DataFetcherExceptionHandlerParameters.Builder
DataFetcherExceptionHandlerResult	The result object for DataFetcherExceptionHandlers
DataFetcherExceptionHandlerResult.Builder
DataFetcherResult<T>	An object that can be returned from a DataFetcher that contains both data, local context and errors to be added to the final result.
DataFetcherResult.Builder<T>
DefaultValueUnboxer	Public API because it should be used as a delegate when implementing a custom ValueUnboxer
Execution
ExecutionContext
ExecutionContextBuilder
ExecutionId	This opaque identifier is used to identify a unique query execution
ExecutionStepInfo	As the graphql query executes, it forms a hierarchy from parent fields (and their type) to their child fields (and their type) until a scalar type is encountered; this class captures that execution type information.
ExecutionStepInfo.Builder
ExecutionStepInfoFactory
ExecutionStrategy	An execution strategy is give a list of fields from the graphql query to execute and find values for using a recursive strategy.
ExecutionStrategyParameters	The parameters that are passed to execution strategies
ExecutionStrategyParameters.Builder
FetchedValue	Note: This is returned by InstrumentationFieldCompleteParameters.getFetchedValue() and therefore part of the public despite never used in a method signature.
FieldCollector	A field collector can iterate over field selection sets and build out the sub fields that have been selected, expanding named and inline fragments as it goes.
FieldCollectorParameters	Internal because FieldCollector is internal.
FieldCollectorParameters.Builder
FieldValueInfo	The FieldValueInfo holds the type of field that was fetched and completed along with the completed value.
MergedField	This represents all Fields in a query which overlap and are merged into one.
MergedField.Builder
MergedSelectionSet
MergedSelectionSet.Builder
NonNullableFieldValidator	This will check that a value is non-null when the type definition says it must be and, it will throw NonNullableFieldWasNullException if this is not the case.
NonNullableFieldWasNullError	This is the base error that indicates that a non null field value was in fact null.
NormalizedVariables	Holds coerced variables, that is their values are now in a normalized NormalizedInputValue form.
RawVariables	Holds raw variables, which have not been coerced yet into CoercedVariables
ResolveType
ResultNodesInfo	This class is used to track the number of result nodes that have been created during execution.
ResultPath	As a graphql query is executed, each field forms a hierarchical path from parent field to child field and this class represents that path as a series of segments.
SimpleDataFetcherExceptionHandler	The standard handling of data fetcher error involves placing a ExceptionWhileDataFetching error into the error collection
SubscriptionExecutionStrategy	An execution strategy that implements graphql subscriptions by using reactive-streams as the output result of the subscription query.
TypeFromAST
TypeResolutionParameters	This class is a classic builder style one that SHOULD have been on have been on TypeResolutionEnvironment but for legacy reasons was not.
TypeResolutionParameters.Builder
ValuesResolver

Enum Summary

Enum	Description
EngineRunningObserver.RunningState
FieldValueInfo.CompleteValueType
ValuesResolver.ValueMode

Exception Summary

Exception	Description
AbortExecutionException	This Exception indicates that the current execution should be aborted.
InputMapDefinesTooManyFieldsException	https://facebook.github.io/graphql/#sec-Input-Objects - This unordered map should not contain any entries with names not defined by a field of this input object type, otherwise an error should be thrown.
MissingRootTypeException	This is thrown if a query is attempting to perform an operation not defined in the GraphQL schema
NonNullableFieldWasNullException	See (https://spec.graphql.org/October2021/#sec-Errors-and-Non-Nullability), but if a non nullable field actually resolves to a null value and the parent type is nullable then the parent must in fact become null so we use exceptions to indicate this special case
NonNullableValueCoercedAsNullException	This is thrown if a non nullable value is coerced to a null value
OneOfNullValueException	The input map to One Of Input Types MUST only have 1 entry with a non null value
OneOfTooManyKeysException	The input map to One Of Input Types MUST only have 1 entry
UnknownOperationException	This is thrown if multiple operations are defined in the query and the operation name is missing or there is no matching operation name contained in the GraphQL query.
UnresolvedTypeException	This is thrown if a TypeResolver fails to give back a concrete type or provides a type that doesn't implement the given interface or union.