jvanzyl     01/05/26 19:41:30

  Added:       src/java/org/apache/turbine/util/db/adapter DBSapDB.java
  Log:
  - sapdb adaptor
  
  Revision  Changes    Path
  1.1                  
jakarta-turbine/src/java/org/apache/turbine/util/db/adapter/DBSapDB.java
  
  Index: DBSapDB.java
  ===================================================================
  package org.apache.turbine.util.db.adapter;
  
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and 
   *    "Apache Turbine" must not be used to endorse or promote products 
   *    derived from this software without prior written permission. For 
   *    written permission, please contact [EMAIL PROTECTED]
   *
   * 5. Products derived from this software may not be called "Apache",
   *    "Apache Turbine", nor may "Apache" appear in their name, without 
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
  
  import java.lang.reflect.Method;
  
  import java.sql.Connection;
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.sql.Statement;
  
  /**
   * This is used to connect to SapDB databases.
   *
   * <a href="http://www.sapdb.org";>http://www.sapdb.org</a>
   *
   * @author <a href="mailto:[EMAIL PROTECTED]";>Dave Polito</a>
   * @version $Id: DBSapDB.java,v 1.1 2001/05/27 02:41:30 jvanzyl Exp $
   */
  public class DBSapDB
      extends DB
  {
      /**
       * Empty constructor.
       */
      protected DBSapDB()
      {
      }
  
      /**
       * This method is used to ignore case.
       *
       * @param in The string to transform to upper case.
       * @return The upper case string.
       */
      public String toUpperCase(String in)
      {
          return new StringBuffer("UPPER(").append(in).append(")").toString();
      }
  
      /**
       * This method is used to ignore case.
       *
       * @param in The string whose case to ignore.
       * @return The string in a case that can be ignored.
       */
      public String ignoreCase(String in)
      {
          return new StringBuffer("UPPER(").append(in).append(")").toString();
      }
  
      /**
       * Gets the string delimiter (usually '\'').
       *
       * @return The delimeter.
       */
      public char getStringDelimiter()
      {
          return '\'';
      }
  
      /**
       * Returns the SQL to get the database key of the last row
       * inserted.
       * SapDB doesn't have this, so it returns null.
       *
       * @return null.
       */
      public String getIdSqlForAutoIncrement(Object obj)
      {
          return null;
      }
  
      /**
       * Returns the next key from a sequence.  Databases like SapDB
       * which support this feature will return a result, others will
       * return null.
       *
       * SapDB does this by returning
       *
       *   select sequenceName.nextval from dual
       *
       * @param sequenceName, An object of type String
       * @return The next database key.
       */
      public String getSequenceSql(Object sequenceName)
      {
          return new StringBuffer()
                 .append("select ")
                 .append((String)sequenceName)
                 .append(".nextval from dual")
                 .toString();
      }
  
      /**
       * Locks the specified table.
       *
       * @param con The JDBC connection to use.
       * @param table The name of the table to lock.
       * @exception SQLException, No Statement could be created or
       * executed.
       */
      public void lockTable(Connection con,
                            String table)
          throws SQLException
      {
          Statement statement = con.createStatement();
  
          StringBuffer stmt = new StringBuffer();
          stmt.append( "SELECT next_id FROM " )
          .append( table )
          .append( " FOR UPDATE" );
  
          statement.executeQuery( stmt.toString() );
      }
  
      /**
       * Unlocks the specified table.
       *
       * @param con The JDBC connection to use.
       * @param table The name of the table to unlock.
       * @exception SQLException No Statement could be created or
       * executed.
       */
      public void unlockTable(Connection con, String table) throws SQLException
      {
          // Tables in SapDB are unlocked when a commit is issued.  The
          // user may have issued a commit but do it here to be sure.
          con.commit();
      }
  }
  
  
  

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