[jboss-user] [JBoss Seam] - @PersistenceContext in a SFSB created by a factory
Hi there,
is it possible to have a PersistenceContext in a bean (don't really know which type it
is, sorry, I'm a noob somedays :D) which is created by a factory?
The thing I want to do is to imlpement the possibility to switch the implementation of an
interface. This works. In one of these implementations I want to obtain the
PersistenceContext and that doesn't work.
But let me show you some code:
@Name("upDownloadFactory")
| @Scope(ScopeType.APPLICATION)
| @Startup
| public class UpDownloadFactory implements Serializable {
| private String className;
|
| @Out(required=false)
| private UpDownload upDownload;
|
| @Factory(value="upDownload", scope=ScopeType.SESSION, autoCreate=true)
| public UpDownload getUpDownload() {
| if(upDownload == null) {
| try {
| if(className == null || className.equals("")) {
| className = "com.idsscheer.ares.sessions.UpDownloadDatabase";
| }
| upDownload = (UpDownload) Class.forName(className).newInstance();
| ... and so on ...
| }
|
| return upDownload;
| }
|
| public void setClassName(String className) {
| this.className = className;
| }
| }
This is the factory I wrote. As you can see the implementation has to be set in
components.xml and sets the className property. All those parameters I set in the @Factory
annotation shall setup the "upDownload" as SFSB.
Here is one implementation of the managed bean:
@Scope(ScopeType.SESSION)
| @Stateful
| public class UpDownloadDatabase implements UpDownload, Serializable {
| @PersistenceContext(unitName = "aresDatabase")
| private transient EntityManager em;
|
| public boolean upload(UpDownloadFileinfo fileInfo) {
| ... do the upload with em ...
| }
|
| public List<UpDownloadFileinfo> getAttachedFiles(long testactionID) {
| ... show a list of attached files ...
| }
|
| @Remove @Destroy
| public void destroy() {
| }
| }
In this implementation the EntityManager is needed but on invokation of this bean the
console tells me that
Caused by: java.lang.IllegalArgumentException: @PersistenceContext may only be used on
session bean or message driven bean components: upDownload
| at org.jboss.seam.Component.initMembers(Component.java:663)
| at org.jboss.seam.Component.<init>(Component.java:253)
| at org.jboss.seam.Component.<init>(Component.java:203)
| at org.jboss.seam.init.Initialization.addComponent(Initialization.java:851)
| ... 93 more
Has anybody an idea how to implement such a factory?
Thanks in advance
Newlukai
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