/**
* 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.metadata.results;
import java.sql.Connection ;
import java.sql.DatabaseMetaData ;
import java.sql.ResultSet ;
import java.sql.SQLException ;
import java.util.List ;
import org.apache.jena.jdbc.connections.JenaConnection ;
import org.junit.Assert ;
import org.junit.Test ;
import com.hp.hpl.jena.query.ARQ ;
/**
* Tests that inspect the information provided by {@link JenaConnection}
* implementations in response to the {@link JenaConnection#getMetaData()}
* method
*
*/
public abstract class AbstractDatabaseMetadataTests {
protected abstract JenaConnection getConnection() throws SQLException;
protected abstract List<Integer> getSupportedTransactionLevels();
/**
* JDBC transaction levels
*/
private static int[] TRANSACTION_LEVELS = new int[] { Connection.TRANSACTION_NONE, Connection.TRANSACTION_READ_COMMITTED,
Connection.TRANSACTION_READ_UNCOMMITTED, Connection.TRANSACTION_REPEATABLE_READ, Connection.TRANSACTION_SERIALIZABLE };
static {
ARQ.init();
}
/**
* Get type info and check the nullable column (regression for an issue
* encountered during debugging)
*
* @throws SQLException
*/
@Test
public void metadata_type_info() throws SQLException {
JenaConnection conn = this.getConnection();
DatabaseMetaData metadata = conn.getMetaData();
ResultSet typeInfo = metadata.getTypeInfo();
while (typeInfo.next()) {
typeInfo.getShort("NULLABLE");
}
Assert.assertTrue(typeInfo.isAfterLast());
typeInfo.close();
Assert.assertTrue(typeInfo.isClosed());
conn.close();
Assert.assertTrue(typeInfo.isClosed());
}
/**
* Tests that reported transaction support is correct
*
* @throws SQLException
*/
@Test
public void metadata_transaction_support() throws SQLException {
JenaConnection conn = this.getConnection();
DatabaseMetaData metadata = conn.getMetaData();
List<Integer> supportedLevels = this.getSupportedTransactionLevels();
// Expect transactions to report as supported if some supported levels
// are returned and either:
// 1 - There is more than one supported level
// 2 - There is one supported level which is not TRANSACTION_NONE
boolean expectedSupport = supportedLevels.size() > 0
&& (supportedLevels.size() != 1 || (supportedLevels.size() == 1 && !supportedLevels.get(0).equals(
Connection.TRANSACTION_NONE)));
Assert.assertEquals(expectedSupport, metadata.supportsTransactions());
for (int level : TRANSACTION_LEVELS) {
Assert.assertEquals(supportedLevels.contains(level), metadata.supportsTransactionIsolationLevel(level));
}
}
}