rowprocessor.java

实现了从Google

/*
 * $Header: /home/cvs/jakarta-commons/dbutils/src/java/org/apache/commons/dbutils/RowProcessor.java,v 1.1 2003/11/02 19:15:23 dgraham Exp $
 * $Revision: 1.1 $
 * $Date: 2003/11/02 19:15:23 $
 * 
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
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 * 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:
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 * 1. Redistributions of source code must retain the above copyright
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    distribution.
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 * 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.
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 *    Foundation" must not be used to endorse or promote products derived
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 * This software consists of voluntary contributions made by many
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package org.apache.commons.dbutils;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;
import java.util.Map;

/**
 * <code>RowProcessor</code> implementations convert 
 * <code>ResultSet</code> rows into various other objects.  Implementations
 * can extend <code>BasicRowProcessor</code> to protect themselves
 * from changes to this interface. 
 * 
 * @see BasicRowProcessor
 * @author David Graham
 */
public interface RowProcessor {

    /**
     * Create an <code>Object[]</code> from the column values in one 
     * <code>ResultSet</code> row.  The <code>ResultSet</code> should be 
     * positioned on a valid row before passing it to this method.  
     * Implementations of this method must not alter the row position of 
     * the <code>ResultSet</code>. 
     */
    public Object[] toArray(ResultSet rs) throws SQLException;

    /**
     * Create a JavaBean from the column values in one <code>ResultSet</code> 
     * row.  The <code>ResultSet</code> should be positioned on a valid row before
     * passing it to this method.  Implementations of this method must not
     * alter the row position of the <code>ResultSet</code>.
     */
    public Object toBean(ResultSet rs, Class type) throws SQLException;

    /**
     * Create a <code>List</code> of JavaBeans from the column values in all 
     * <code>ResultSet</code> rows.  <code>ResultSet.next()</code> should 
     * <strong>not</strong> be called before passing it to this method.
     * 
     * @return A <code>List</code> of beans with the given type in the order 
     * they were returned by the <code>ResultSet</code>.
     */
    public List toBeanList(ResultSet rs, Class type) throws SQLException;

    /**
     * Create a <code>Map</code> from the column values in one 
     * <code>ResultSet</code> row.  The <code>ResultSet</code> should be 
     * positioned on a valid row before
     * passing it to this method.  Implementations of this method must not
     * alter the row position of the <code>ResultSet</code>.
     */
    public Map toMap(ResultSet rs) throws SQLException;

}