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From Christopher Oliver <res1c...@verizon.net>
Subject Re: Hibernat2 block
Date Sat, 19 Apr 2003 19:26:51 GMT
Why not use a flowscript to call Hibernate? Then you wouldn't need a 
special logicsheet. Jpath would be enough.

Regards,

Chris

Giacomo Pati wrote:

>Hi team
>
>We've recently started a project that uses the Hibernat2 package from
>http://hibernate.sf.net as a object to relational mapping tool. We considered
>other packages and end up with Hibernate2 because of:
>
>  - has good performance
>  - has quite a good community
>  - has many project using it (http://hibernate.bluemars.net/27.html)
>  - has XDoclet support
>    (http://xdoclet.sourceforge.net/tags/hibernate-tags.html)
>
>and some other aspects.
>
>We have developped a logicsheet that is a mixture out of the esql and jpath
>logicsheets that let you develop easily XSP pages with hibernated content.
>
>Consider the following object model:
>
>  Project
>   !
>   +--<>* Task                Staff
>           !                   !
>           +--<>* Mandate *<>--+
>                   !
>                   +--<>* Expenditure <!--+
>                                          !
>                                +---------+---------+
>                                !                   !
>                              Activity            Expense
>
>Where
>  - Project     : Defines a project
>  - Task        : Defines a task of a project
>  - Mandate     : Defines a task worked on by a staff
>  - Expendituere: Defines work activities as either
>    - Activity  : Duration activity worked on a mandate
>    - Expense   : Costs raised for a mandate
>
>Now using the logicsheet one can build a XSP page like:
>
>  <xsp:page language="java"
>            xmlns:xsp="http://apache.org/xsp"
>            xmlns:hbn="http://otego.com/xsp/hibernate/2.0" >
>   <document>
>    <hbn:execute-query>
>    <hbn:query>from project in class Project</hbn:query>
>     <hbn:results>
>      <project>
>       <name><hbn:value-of select="result/name"/></name>
>       <hbn:for-each select="result/tasks">
>        <task>
>         <name><hbn:value-of select="name"/></name>
>          <hbn:for-each select="mandates">
>           <mandate>
>            <staff>
>             <name><hbn:value-of select="staff/name"/></name>
>            </staff>
>            <hbn:for-each select="expenditures">
>             <expenditure>
>              <date><hbn:value-of select="date"/></date>
>              <description><hbn:value-of select="description"/></description>
>              <hbn:choose>
>               <hbn:when test="type='Activity'">
>                <activity>
>                 <duration><hbn:value-of select="duration"/></duration>
>                </activity>
>               </hbn:when>
>               <hbn:when test="type='Expense'">
>                <expense>
>                 <amount><hbn:value-of select="amount"/></amount>
>                </expense>
>               </hbn:when>
>              </hbn:choose>
>             </expenditure>
>            </hbn:for-each>
>           <sum><hbn:value-of select="sumAmountOfAllExpenditure"/></sum>
>           </mandate>
>          </hbn:for-each>
>          <sum><hbn:value-of select="sumAmountOfAllExpenditure"/></sum>
>         </task>
>        </hbn:for-each>
>       <sum><hbn:value-of select="sumAmountOfAllExpenditure"/></sum>
>      </project>
>     </hbn:results>
>     <hbn:no-results>
>      <project/>
>     </hbn:no-results>
>     <hbn:error-results>
>      <trace>
>       <hbn:get-stacktrace/>
>      </trace>
>     </hbn:error-results>
>    </hbn:execute-query>
>   </document>
>  </xsp:page>
>
>Anybody intressted in this? Can I donnate and add a block for it?
>
>Giacomo
>
>  
>



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