com.amazon.carbonado.qe

Interface KeyQueryExecutor.Support<S extends Storable>

All Known Subinterfaces:

StorageAccess<S>

Enclosing class:

KeyQueryExecutor<S extends Storable>

public static interface KeyQueryExecutor.Support<S extends Storable>

Provides support for KeyQueryExecutor.

Method Summary

Methods

Modifier and Type	Method and Description
Cursor<S>	fetchOne(StorableIndex<S> index, java.lang.Object[] identityValues) Select at most one Storable referenced by an index.
Cursor<S>	fetchOne(StorableIndex<S> index, java.lang.Object[] identityValues, Query.Controller controller) Select at most one Storable referenced by an index.

Method Detail

fetchOne

Cursor<S> fetchOne(StorableIndex<S> index,
                 java.lang.Object[] identityValues)
                                    throws FetchException

Select at most one Storable referenced by an index. The identity values fully specify all elements of the index, and the index is unique.

Parameters:

index - index to open, which may be a primary key index

identityValues - of exactly matching values to apply to index

Throws:

FetchException

fetchOne

Cursor<S> fetchOne(StorableIndex<S> index,
                 java.lang.Object[] identityValues,
                 Query.Controller controller)
                                    throws FetchException

Select at most one Storable referenced by an index. The identity values fully specify all elements of the index, and the index is unique.

Parameters:

controller - optional controller which can abort query operation

index - index to open, which may be a primary key index

identityValues - of exactly matching values to apply to index

Throws:

FetchException