I am implementing persistence with Castor JDO and need to integrate this
with Struts frame work. I am new to both castor and struts and sorry for
one's time if it is a basic question.
I get the following error.
org.exolab.castor.jdo.PersistenceException: jdo.dbClosedTxRolledback
at org.exolab.castor.jdo.engine.DatabaseImpl.close(DatabaseImpl.java:248)
at com.teamxtend.lms.http.actions.LogonAction.perform(LogonAction.java:100)
at
org.apache.struts.action.ActionServlet.processActionPerform(ActionServlet.ja
va:1787)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1586)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:510)
the code for LogonAction
jdo =
(JDO)this.getServlet().getServletContext().getAttribute(Constant.JDO_KEY);
try {
db = jdo.getDatabase();
db.begin();
OQLQuery userOql = db.getOQLQuery( "SELECT u FROM
com.teamxtend.lms.om.User u WHERE Email = $1" );
userOql.bind( user.getUsername() );
QueryResults results = userOql.execute();
// log query
getServlet().log("Executing query.");
if ( ! results.hasMore() ) {
User myuser = (User) results.next();
session.setAttribute(Constant.USER_KEY,myuser);
}
//db.commit();
db.rollback();
db.close();
} catch ( Exception e ) {
e.printStackTrace();
-----------------------------------------------
The corresponding web.xml in struts configuration is
<context-param>
<param-name>lmsBusinessFactory</param-name>
<param-value>com.teamxtend.lms.http.BusinessFactory</param-value>
</context-param>
<!-- Initialisation servlet -->
<servlet>
<servlet-name>Initialise</servlet-name>
<servlet-class>com.teamxtend.lms.http.LmsInitialisation</servlet-class>
<init-param>
<param-name>lms-config-file</param-name>
<param-value>/WEB-INF/lms.xml</param-value>
</init-param>
<init-param>
<param-name>xml-binding-mapping</param-name>
<param-value>/WEB-INF/mapping.xml</param-value>
</init-param>
<init-param>
<param-name>xml-database-file</param-name>
<param-value>/WEB-INF/database.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
--------------------------------------------------------
Lms Initialization.java
public void init() throws ServletException {
String lmsConfigFile =
getServletConfig().getInitParameter("lms-config-file");
// details the Castor Xml binding configuration
String xmlBindingMapping =
getServletConfig().getInitParameter("xml-binding-mapping");
// details the Castor Database configuration
String xmlDatabaseFile =
getServletConfig().getInitParameter("xml-database-file");
// ensure init parameters (as detailed in the web.xml) are present
if (lmsConfigFile == null)
throw new ServletException("No 'lms-config-file' Init Parameter
supplied in web.xml");
if (xmlBindingMapping == null)
throw new ServletException("No 'xml-binding-mapping' Init
Parameter supplied in web.xml");
if (xmlDatabaseFile == null)
throw new ServletException("No 'xml-database-file' Init Parameter
supplied in web.xml");
// all Servlet Init Parameters present...
// retrieve Context Parameters
String lmsBusinessFactory = (String)
getServletContext().getInitParameter("lmsBusinessFactory");
// ensure Context Parameters are present and valid
// ensure the Business Factory parameter is present
if (lmsBusinessFactory == null)
throw new ServletException("No 'lmsBusinessFactory' Context
Parameter supplied in web.xml");
// all Context Parameters present and valid...
try {
// configure Xml Binding mapping
Mapping mapping = new Mapping();
JDO jdo = new JDO();
mapping.loadMapping(getServletContext().getResource(xmlBindingMapping));
jdo.setConfiguration(getServletContext().getResource(xmlDatabaseFile).toStri
ng());
jdo.setDatabaseName( "lms" );
// place Castor JDO into the web-app context
this.getServletContext().setAttribute(Constant.JDO_KEY,jdo);
// output the retrieved values for the Init and Context
Parameters
// leave in for essential debugging :)
log("Init parameter: config-file: " + lmsConfigFile);
log("Init parameter: xml-binding-mapping: " +
xmlBindingMapping);
log("Init parameter: xml-database-file: " + xmlDatabaseFile);
log("Context parameter: lmsBusinessFactory: " +
lmsBusinessFactory);
log("Initialisation complete [ok]");
} catch (Exception e) {
log("LMS has failed to start up correctly ...");
log("Exception: " + e.toString());
throw new ServletException(e);
}
}
In the mailing list, I found a similar query, to implement
db.rollback().Thats not working for me.
Thanks in advance
Vishy
Professional Services,
Xtend Corporation
Columbia, SC
Phone:803-732-3080 x 217
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