/*
* 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.connector.system;
import com.facebook.presto.spi.ColumnHandle;
import com.facebook.presto.spi.ColumnMetadata;
import com.facebook.presto.spi.ConnectorSession;
import com.facebook.presto.spi.ConnectorTableHandle;
import com.facebook.presto.spi.ConnectorTableLayout;
import com.facebook.presto.spi.ConnectorTableLayoutHandle;
import com.facebook.presto.spi.ConnectorTableLayoutResult;
import com.facebook.presto.spi.ConnectorTableMetadata;
import com.facebook.presto.spi.Constraint;
import com.facebook.presto.spi.SchemaTableName;
import com.facebook.presto.spi.SchemaTablePrefix;
import com.facebook.presto.spi.SystemTable;
import com.facebook.presto.spi.connector.ConnectorMetadata;
import com.facebook.presto.spi.connector.ConnectorPageSourceProvider;
import com.facebook.presto.spi.connector.ConnectorSplitManager;
import com.facebook.presto.spi.connector.ConnectorTransactionHandle;
import com.facebook.presto.spi.procedure.Procedure;
import com.facebook.presto.spi.transaction.IsolationLevel;
import com.facebook.presto.transaction.InternalConnector;
import com.facebook.presto.transaction.TransactionId;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import static java.util.Objects.requireNonNull;
public class GlobalSystemConnector
implements InternalConnector
{
public static final String NAME = "system";
private final String connectorId;
private final Set<SystemTable> systemTables;
private final Set<Procedure> procedures;
public GlobalSystemConnector(String connectorId, Set<SystemTable> systemTables, Set<Procedure> procedures)
{
this.connectorId = requireNonNull(connectorId, "connectorId is null");
this.systemTables = ImmutableSet.copyOf(requireNonNull(systemTables, "systemTables is null"));
this.procedures = ImmutableSet.copyOf(requireNonNull(procedures, "procedures is null"));
}
@Override
public ConnectorTransactionHandle beginTransaction(TransactionId transactionId, IsolationLevel isolationLevel, boolean readOnly)
{
return new GlobalSystemTransactionHandle(connectorId, transactionId);
}
@Override
public ConnectorMetadata getMetadata(ConnectorTransactionHandle transactionHandle)
{
return new ConnectorMetadata()
{
@Override
public List<String> listSchemaNames(ConnectorSession session)
{
return ImmutableList.of();
}
@Override
public ConnectorTableHandle getTableHandle(ConnectorSession session, SchemaTableName tableName)
{
return null;
}
@Override
public List<ConnectorTableLayoutResult> getTableLayouts(ConnectorSession session, ConnectorTableHandle table, Constraint<ColumnHandle> constraint, Optional<Set<ColumnHandle>> desiredColumns)
{
throw new UnsupportedOperationException();
}
@Override
public ConnectorTableLayout getTableLayout(ConnectorSession session, ConnectorTableLayoutHandle handle)
{
throw new UnsupportedOperationException();
}
@Override
public ConnectorTableMetadata getTableMetadata(ConnectorSession session, ConnectorTableHandle table)
{
throw new UnsupportedOperationException();
}
@Override
public List<SchemaTableName> listTables(ConnectorSession session, String schemaNameOrNull)
{
return ImmutableList.of();
}
@Override
public Map<String, ColumnHandle> getColumnHandles(ConnectorSession session, ConnectorTableHandle tableHandle)
{
throw new UnsupportedOperationException();
}
@Override
public ColumnMetadata getColumnMetadata(ConnectorSession session, ConnectorTableHandle tableHandle, ColumnHandle columnHandle)
{
throw new UnsupportedOperationException();
}
@Override
public Map<SchemaTableName, List<ColumnMetadata>> listTableColumns(ConnectorSession session, SchemaTablePrefix prefix)
{
return ImmutableMap.of();
}
};
}
@Override
public ConnectorSplitManager getSplitManager()
{
return new ConnectorSplitManager() {};
}
@Override
public ConnectorPageSourceProvider getPageSourceProvider()
{
return (transactionHandle, session, split, columns) -> {
throw new UnsupportedOperationException();
};
}
@Override
public Set<SystemTable> getSystemTables()
{
return systemTables;
}
@Override
public Set<Procedure> getProcedures()
{
return procedures;
}
}