io.stargate.graphql.schema

Class CassandraFetcher<ResultT>

java.lang.Object

io.stargate.graphql.schema.CassandraFetcher<ResultT>

All Implemented Interfaces:

graphql.schema.DataFetcher<ResultT>

Direct Known Subclasses:

AllKeyspacesFetcher, DdlQueryFetcher, DeleteFetcher, DeploySchemaFetcher, DeploySchemaFileFetcher, DmlFetcher, FederatedEntityFetcher, InsertFetcher, QueryFetcher, SchemaFetcher, SingleKeyspaceFetcher, UndeploySchemaFetcher, UpdateFetcher

public abstract class CassandraFetcher<ResultT>
extends Object
implements graphql.schema.DataFetcher<ResultT>

Base class for fetchers that access the Cassandra backend. It also handles authentication.

Field Summary

Fields

Modifier and Type	Field and Description
protected AuthorizationService	authorizationService
protected DataStoreFactory	dataStoreFactory
static ConsistencyLevel	DEFAULT_CONSISTENCY
static int	DEFAULT_PAGE_SIZE
static Parameters	DEFAULT_PARAMETERS
static ConsistencyLevel	DEFAULT_SERIAL_CONSISTENCY

Constructor Summary

Constructors

Constructor and Description
CassandraFetcher(AuthorizationService authorizationService, DataStoreFactory dataStoreFactory)

Method Summary

Modifier and Type	Method and Description
ResultT	get(graphql.schema.DataFetchingEnvironment environment)
protected abstract ResultT	get(graphql.schema.DataFetchingEnvironment environment, DataStore dataStore, AuthenticationSubject authenticationSubject)
protected Parameters	getDatastoreParameters(graphql.schema.DataFetchingEnvironment environment)

Methods inherited from class java.lang.Object

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

Field Detail

authorizationService

protected final AuthorizationService authorizationService

dataStoreFactory

protected final DataStoreFactory dataStoreFactory

DEFAULT_CONSISTENCY

public static final ConsistencyLevel DEFAULT_CONSISTENCY

DEFAULT_SERIAL_CONSISTENCY

public static final ConsistencyLevel DEFAULT_SERIAL_CONSISTENCY

DEFAULT_PAGE_SIZE

public static final int DEFAULT_PAGE_SIZE

See Also:

Constant Field Values

DEFAULT_PARAMETERS

public static final Parameters DEFAULT_PARAMETERS

Constructor Detail

CassandraFetcher

public CassandraFetcher(AuthorizationService authorizationService,
                        DataStoreFactory dataStoreFactory)

Method Detail

get

public final ResultT get(graphql.schema.DataFetchingEnvironment environment)
                  throws Exception

Specified by:

get in interface graphql.schema.DataFetcher<ResultT>

Throws:

Exception

getDatastoreParameters

protected Parameters getDatastoreParameters(graphql.schema.DataFetchingEnvironment environment)

get

protected abstract ResultT get(graphql.schema.DataFetchingEnvironment environment,
                               DataStore dataStore,
                               AuthenticationSubject authenticationSubject)
                        throws Exception

Throws:

Exception