Java JDBC Database Metadata getJDBCMajorVersion(Connection conn)

Description

Get the JDBC version, inferring it from the driver.

License

Apache License

Declaration

public static int getJDBCMajorVersion(Connection conn) 

Method Source Code

//package com.java2s;
/*/*from   w w  w.j  av  a 2 s .  c  o  m*/
    
   Derby - Class org.apache.derbyTesting.functionTests.util.TestUtil
    
   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.
    
 */

import java.sql.*;

import java.lang.reflect.*;

public class Main {
    /**
       Get the JDBC version, inferring it from the driver.
    */

    public static int getJDBCMajorVersion(Connection conn) {
        try {
            // DatabaseMetaData.getJDBCMajorVersion() was not part of JDBC 2.0.
            // Check if setSavepoint() is present to decide whether the version
            // is > 2.0.
            conn.getClass().getMethod("setSavepoint", null);
            DatabaseMetaData meta = conn.getMetaData();
            Method method = meta.getClass().getMethod("getJDBCMajorVersion", null);
            return ((Number) method.invoke(meta, null)).intValue();
        } catch (Throwable t) {
            // Error probably means that either setSavepoint() or
            // getJDBCMajorVersion() is not present. Assume JDBC 2.0.
            return 2;
        }

    }
}

Related

1. getDBTables(DatabaseMetaData metaData, String dataBase, String user)
2. getDbType(Connection connection)
3. getDBUsers(DatabaseMetaData metaData)
4. getDriverSpecificSettings(Connection connection, String defaultUnionColumnValue)
5. getForeignKeyDeferrability(int code)
6. getNullableDescription(int type)
7. getOnly1PrimaryKey(Connection conn, String tableName)
8. getPrimaryKey(DatabaseMetaData metadata, String tableName)
9. getPrimaryKeyColumn(DatabaseMetaData md, String TableName)