/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.facebook.presto.raptor.systemtables;
import com.facebook.presto.raptor.metadata.ForMetadata;
import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.ConnectorTableMetadata;
import com.facebook.presto.spi.RecordCursor;
import com.facebook.presto.spi.SystemTable;
import com.facebook.presto.spi.connector.ConnectorTransactionHandle;
import com.facebook.presto.spi.predicate.TupleDomain;
import org.skife.jdbi.v2.IDBI;
import javax.inject.Inject;
import static com.facebook.presto.raptor.systemtables.ShardMetadataRecordCursor.SHARD_METADATA;
import static com.facebook.presto.spi.SystemTable.Distribution.SINGLE_COORDINATOR;
import static java.util.Objects.requireNonNull;
public class ShardMetadataSystemTable
implements SystemTable
{
private final IDBI dbi;
@Inject
public ShardMetadataSystemTable(@ForMetadata IDBI dbi)
{
this.dbi = requireNonNull(dbi, "dbi is null");
}
@Override
public Distribution getDistribution()
{
return SINGLE_COORDINATOR;
}
@Override
public ConnectorTableMetadata getTableMetadata()
{
return SHARD_METADATA;
}
@Override
public RecordCursor cursor(ConnectorTransactionHandle transactionHandle, ConnectorSession session, TupleDomain<Integer> constraint)
{
return new ShardMetadataRecordCursor(dbi, constraint);
}
}