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From dgra...@apache.org
Subject cvs commit: jakarta-commons-sandbox/dbutils/src/java/org/apache/commons/dbutils MapListHandler.java
Date Sun, 19 Oct 2003 02:46:27 GMT
dgraham     2003/10/18 19:46:27

  Added:       dbutils/src/java/org/apache/commons/dbutils
                        MapListHandler.java
  Log:
  Added MapListHandler that returns a List of all rows represented as
  Maps.
  
  Revision  Changes    Path
  1.1                  jakarta-commons-sandbox/dbutils/src/java/org/apache/commons/dbutils/MapListHandler.java
  
  Index: MapListHandler.java
  ===================================================================
  /*
   * $Header: /home/cvs/jakarta-commons-sandbox/dbutils/src/java/org/apache/commons/dbutils/MapListHandler.java,v
1.1 2003/10/19 02:46:26 dgraham Exp $
   * $Revision: 1.1 $
   * $Date: 2003/10/19 02:46:26 $
   * 
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 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 acknowledgement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgement may appear in the software itself,
   *    if and wherever such third-party acknowledgements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names 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/>.
   *
   */
  
  package org.apache.commons.dbutils;
  
  import java.sql.ResultSet;
  import java.sql.SQLException;
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * <code>ResultSetHandler</code> implementation that converts a
   * <code>ResultSet</code> into a <code>List</code> of <code>Map</code>s.
   * 
   * @see ResultSetHandler
   * 
   * @author David Graham
   */
  public class MapListHandler implements ResultSetHandler {
  
      /**
       * The RowProcessor implementation to use when converting rows 
       * into Maps.
       */
      private RowProcessor convert = BasicRowProcessor.instance();
  
      /** 
       * Creates a new instance of MapListHandler using a 
       * <code>BasicRowProcessor</code> for conversion.
       */
      public MapListHandler() {
          super();
      }
  
      /** 
       * Creates a new instance of MapListHandler.
       * 
       * @param convert The <code>RowProcessor</code> implementation 
       * to use when converting rows into Maps.
       */
      public MapListHandler(RowProcessor convert) {
          super();
          this.convert = convert;
      }
  
      /**
       * Converts the <code>ResultSet</code> rows into a <code>List</code>
of 
       * <code>Map</code> objects.
       * 
       * @return A <code>List</code> of <code>Map</code>s, never null.
 
       * 
       * @throws SQLException
       * 
       * @see org.apache.commons.dbutils.ResultSetHandler#handle(java.sql.ResultSet, java.lang.Object[],
java.lang.Object)
       */
      public Object handle(ResultSet rs, Object[] params, Object userObject)
          throws SQLException {
  
          List results = new ArrayList();
  
          while (rs.next()) {
              results.add(this.convert.toMap(rs));
          }
  
          return results;
      }
  
  }
  
  
  

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