[jboss-user] [JBoss Portal Users] - Re: How to obtain the current portlet instance?
It took more two afternoons, but I found a solution.
The trick is to use the PortalObjectContainer to obtain the current PortalObject from the
current PortalNode.
Anyway, here's my code:
| private Instance getCurrentInstance() {
| PortalNodeImpl node = Navigation.getCurrentNode();
| if (node.getType() != PortalNode.TYPE_WINDOW) {
| return null;
| }
| PortalObjectId id = node.getObjectId();
| Window window = (Window) getPortalObjectContainer().getObject(id);
| PortletContent pc = (PortletContent) window.getContent();
| return getInstanceContainer().getDefinition(pc.getInstanceRef());
| }
|
| @Override
| public boolean writePref(String prefKey, String newPrefValue) {
| Instance currentInstance = getCurrentInstance();
|
| if (null == currentInstance) {
| logger.error("<-- writePref() Current Instance is null, stopping.");
| return false;
| }
|
| try {
| List<PropertyChange> changeList = new ArrayList<PropertyChange>();
| PropertyChange change = PropertyChange.newUpdate(prefKey,
| newPrefValue);
| changeList.add(change);
|
| PropertyChange[] changeArray = changeList
| .toArray(new PropertyChange[changeList.size()]);
|
| logger.info("--> save()", " setting properties");
| currentInstance.setProperties(changeArray);
|
| } catch (PortletInvokerException e) {
| logger.error(e.toString());
| return false;
| } catch (Exception e) {
| logger.error(e.toString());
| return false;
| } catch (Throwable t) {
| logger.error(t.toString());
| return false;
| }
|
| return true;
| }
|
You need to inject the InstanceContainer and PortalObjectContainer via the
jboss-portlet.xml:
| <portlet-app>
| ...
| <service>
| <service-name>PortalObjectContainer</service-name>
|
<service-class>org.jboss.portal.core.model.portal.PortalObjectContainer</service-class>
| <service-ref>portal:container=PortalObject</service-ref>
| </service>
| <service>
| <service-name>InstanceContainer</service-name>
|
<service-class>org.jboss.portal.core.model.instance.InstanceContainer</service-class>
| <service-ref>:container=Instance</service-ref>
| </service>
| ...
| </portlet-app>
|
Then you can access them in your beans, I do it by injecting them via faces-config.xml:
| <faces-config>
| ...
| <managed-bean>
| <managed-bean-name>portletPreferencesHelper</managed-bean-name>
|
<managed-bean-class>package.foo.PortletPreferencesHelperJBossImpl</managed-bean-class>
| <managed-bean-scope>session</managed-bean-scope>
| <managed-property>
| <property-name>instanceContainer</property-name>
| <value>#{applicationScope.InstanceContainer}</value>
| </managed-property>
| <managed-property>
| <property-name>portalObjectContainer</property-name>
| <value>#{applicationScope.PortalObjectContainer}</value>
| </managed-property>
| </managed-bean>
| ...
| </faces-config>
|
And now I finally have InstancePreferences capsuled in a Bean. Btw: Reading the
PortletPreferences works the usual way. As I never write user-level PortletPreferences,
the Portal always falls back to the InstancePreferences.
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