io.stargate.graphql.schema.fetchers

Class CassandraFetcher<ResultT>

java.lang.Object

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

All Implemented Interfaces:

graphql.schema.DataFetcher<ResultT>

Direct Known Subclasses:

AllKeyspacesFetcher, DdlQueryFetcher, DmlFetcher, SingleKeyspaceFetcher

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 AuthenticationService	authenticationService
static ConsistencyLevel	DEFAULT_CONSISTENCY
static int	DEFAULT_PAGE_SIZE
static Parameters	DEFAULT_PARAMETERS
static ConsistencyLevel	DEFAULT_SERIAL_CONSISTENCY
protected Persistence	persistence

Constructor Summary

Constructors

Constructor and Description
CassandraFetcher(Persistence persistence, AuthenticationService authenticationService)

Method Summary

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

Methods inherited from class java.lang.Object

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

Field Detail

persistence

protected final Persistence persistence

authenticationService

protected final AuthenticationService authenticationService

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(Persistence persistence,
                        AuthenticationService authenticationService)

Method Detail

get

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

Specified by:

get in interface graphql.schema.DataFetcher<ResultT>

Throws:

Exception

get

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

Throws:

Exception