/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.jena.jdbc.tdb.connections;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
import org.apache.jena.jdbc.JdbcCompatibility;
import org.apache.jena.jdbc.connections.DatasetConnection;
import org.apache.jena.jdbc.tdb.metadata.TDBDatasetMetadata;
import org.apache.jena.query.Dataset ;
/**
* Represents a dataset connection backed by a TDB dataset
*
*/
public class TDBConnection extends DatasetConnection {
private DatabaseMetaData metadata;
/**
* Creates a new connection
* @param ds Dataset
* @param holdability Result Set holdability
* @param autoCommit Auto-commit mode
* @param compatibilityLevel JDBC compatability level, see {@link JdbcCompatibility}
* @throws SQLException
*/
public TDBConnection(Dataset ds, int holdability, boolean autoCommit, int compatibilityLevel) throws SQLException {
super(ds, holdability, autoCommit, Connection.TRANSACTION_SERIALIZABLE, compatibilityLevel);
this.metadata = new TDBDatasetMetadata(this);
}
@Override
public DatabaseMetaData getMetaData() {
return this.metadata;
}
@Override
protected void checkTransactionIsolation(int level) throws SQLException {
switch (level) {
case TRANSACTION_SERIALIZABLE:
// TDB supports only serializable as the transaction level
return;
default:
throw new SQLException(String.format("The Transaction level %d is not supported by TDB backed connections, only Serializable (%d) may be used", level, TRANSACTION_SERIALIZABLE));
}
}
}