Package io.github.qubitpi.athena.metastore.graphql

Class GraphQLFactory

java.lang.Object

io.github.qubitpi.athena.metastore.graphql.GraphQLFactory

@Singleton
@Immutable
@ThreadSafe
public class GraphQLFactory
extends Object

GraphQLFactory initializes native GraphQL API.

Constructor Summary

Constructors

Constructor	Description
GraphQLFactory(@NotNull graphql.schema.DataFetcher<MetaData> queryDataFetcher, @NotNull graphql.schema.DataFetcher<MetaData> mutationDataFetcher)	Constructor.

Method Summary

Modifier and Type	Method	Description
@NotNull graphql.GraphQL	getApi()	Returns the native GraphQL API factorized.
static @NotNull String	getGraphQLSchemaResourceAsString(@NotNull String resourceName)	Loads a resource file into a single String object.

Methods inherited from class java.lang.Object

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

Constructor Details

GraphQLFactory

public GraphQLFactory(@NotNull
 @NotNull graphql.schema.DataFetcher<MetaData> queryDataFetcher,
 @NotNull
 @NotNull graphql.schema.DataFetcher<MetaData> mutationDataFetcher)

Constructor.

Parameters:

queryDataFetcher - An application defined logic for retrieving file metadata from various databases

mutationDataFetcher - An application defined logic for saving/updating file metadata into various databases

Throws:

NullPointerException - if queryDataFetcher or mutationDataFetcher is null

Method Details

getGraphQLSchemaResourceAsString

@NotNull
public static @NotNull String getGraphQLSchemaResourceAsString(@NotNull
 @NotNull String resourceName)

Loads a resource file into a single String object.

Parameters:

resourceName - cannot be null

Returns:

a resource file content

Throws:

NullPointerException - if resourceName is null

IllegalStateException - if resourceName corresponds a non-existing file source

getApi

@NotNull
public @NotNull graphql.GraphQL getApi()

Returns the native GraphQL API factorized.

Returns:

the same instance