Spring Hibernate DAO Implementation

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	Spring Hibernate DAO Implementation

cwagner118

7-11-2008 3:51 PM

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spring, dao, hibernate

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/56a5899b-6969-4d88-a851-3d257ba5c3ae/BABDBA6B-5216-43EA-A288-A22952FE7883/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/" href="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/" style="font-size: 11px;">kennii.wordpress.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><H2>Spring Hibernate DAO Implementation with interface</H2></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><P><STRONG>Intro </STRONG></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><P>Assuming we have a module called <STRONG>Account Management</STRONG> in our project called<STRONG> foo</STRONG>,</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><P>We might can make use of the following package structure.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><li style="margin-left:16px;padding-left: 0px;">foo.service.AccountManagement</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><li style="margin-left:16px;padding-left: 0px;">foo.service.AccountManagementImpl</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><li style="margin-left:16px;padding-left: 0px;">foo.dao.AccountDAO</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><li style="margin-left:16px;padding-left: 0px;">foo.dao.hibernate.AccountDAOImpl (In this case hibernate)</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><li style="margin-left:16px;padding-left: 0px;">foo.model.Account</LI></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/kennii.wordpress.com/img/FB3B97E9-629B-4F15-967D-02EF39878DE6" alt="Sample Spring-Hibernate Hierarchy UML" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><P><STRONG>Spring Wiring </STRONG></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><CODE>&lt;bean id="accountDAO" class="rb.dao.hibernate.AccountDAOImpl"&gt;&lt;/bean&gt;</CODE></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><CODE>&lt;bean id="accountManagement" class="foo.service.AccountManagementImpl"&gt;
&lt;property name=”accountDAO”&gt;
&lt;ref bean=”accountDAO”/&gt;
&lt;/property&gt;
&lt;/bean&gt;</CODE></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><P>So note that you can replace the accountDAO with some other implementation class, probably using pure JDBC or ibatis.</P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><P><STRONG>Summary</STRONG></P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://kennii.wordpress.com/2007/08/07/spring-hibernate-dao-implementation-with-interface/"><P>As the experts say, always code to interfaces to cater for different implementations.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/BABDBA6B-5216-43EA-A288-A22952FE7883/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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