Source Code Cross Referenced for MappingSqlQueryWithParameters.java in  » J2EE » spring-framework-2.5 » org » springframework » jdbc » object » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » J2EE » spring framework 2.5 » org.springframework.jdbc.object 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2002-2005 the original author or authors.
003:         * 
004:         * Licensed under the Apache License, Version 2.0 (the "License");
005:         * you may not use this file except in compliance with the License.
006:         * You may obtain a copy of the License at
007:         * 
008:         *      http://www.apache.org/licenses/LICENSE-2.0
009:         * 
010:         * Unless required by applicable law or agreed to in writing, software
011:         * distributed under the License is distributed on an "AS IS" BASIS,
012:         * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013:         * See the License for the specific language governing permissions and
014:         * limitations under the License.
015:         */
016:
017:        package org.springframework.jdbc.object;
018:
019:        import java.sql.ResultSet;
020:        import java.sql.SQLException;
021:        import java.util.Map;
022:
023:        import javax.sql.DataSource;
024:
025:        import org.springframework.jdbc.core.RowMapper;
026:
027:        /**
028:         * Reusable RDBMS query in which concrete subclasses must implement
029:         * the abstract mapRow(ResultSet, int) method to map each row of
030:         * the JDBC ResultSet into an object.
031:         *
032:         * <p>Such manual mapping is usually preferable to "automatic"
033:         * mapping using reflection, which can become complex in non-trivial
034:         * cases. For example, the present class allows different objects
035:         * to be used for different rows (for example, if a subclass is indicated).
036:         * It allows computed fields to be set. And there's no need for
037:         * ResultSet columns to have the same names as bean properties.
038:         * The Pareto Principle in action: going the extra mile to automate
039:         * the extraction process makes the framework much more complex
040:         * and delivers little real benefit.
041:         *
042:         * <p>Subclasses can be constructed providing SQL, parameter types
043:         * and a DataSource. SQL will often vary between subclasses.
044:         *
045:         * @author Rod Johnson
046:         * @author Thomas Risberg
047:         * @author Jean-Pierre Pawlak
048:         * @see org.springframework.jdbc.object.MappingSqlQuery
049:         * @see org.springframework.jdbc.object.SqlQuery
050:         */
051:        public abstract class MappingSqlQueryWithParameters extends SqlQuery {
052:
053:            /**
054:             * Constructor to allow use as a JavaBean
055:             */
056:            public MappingSqlQueryWithParameters() {
057:            }
058:
059:            /**
060:             * Convenient constructor with DataSource and SQL string.
061:             * @param ds DataSource to use to get connections
062:             * @param sql SQL to run
063:             */
064:            public MappingSqlQueryWithParameters(DataSource ds, String sql) {
065:                super (ds, sql);
066:            }
067:
068:            /**
069:             * Implementation of protected abstract method. This invokes the subclass's
070:             * implementation of the mapRow() method.
071:             */
072:            protected RowMapper newRowMapper(Object[] parameters, Map context) {
073:                return new RowMapperImpl(parameters, context);
074:            }
075:
076:            /**
077:             * Subclasses must implement this method to convert each row
078:             * of the ResultSet into an object of the result type.
079:             * @param rs ResultSet we're working through
080:             * @param rowNum row number (from 0) we're up to
081:             * @param parameters to the query (passed to the execute() method).
082:             * Subclasses are rarely interested in these.
083:             * It can be <code>null</code> if there are no parameters.
084:             * @param context passed to the execute() method.
085:             * It can be <code>null</code> if no contextual information is need.
086:             * @return an object of the result type
087:             * @throws SQLException if there's an error extracting data.
088:             * Subclasses can simply not catch SQLExceptions, relying on the
089:             * framework to clean up.
090:             */
091:            protected abstract Object mapRow(ResultSet rs, int rowNum,
092:                    Object[] parameters, Map context) throws SQLException;
093:
094:            /**
095:             * Implementation of RowMapper that calls the enclosing
096:             * class's <code>mapRow</code> method for each row.
097:             */
098:            protected class RowMapperImpl implements  RowMapper {
099:
100:                private final Object[] params;
101:
102:                private final Map context;
103:
104:                /**
105:                 * Use an array results. More efficient if we know how many results to expect.
106:                 */
107:                public RowMapperImpl(Object[] parameters, Map context) {
108:                    this .params = parameters;
109:                    this .context = context;
110:                }
111:
112:                public Object mapRow(ResultSet rs, int rowNum)
113:                        throws SQLException {
114:                    return MappingSqlQueryWithParameters.this.mapRow(rs,
115:                            rowNum, this.params, this.context);
116:                }
117:            }
118:
119:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.