Hello Friends,
Here i have published all possible ways to override Liferay classes and properties for which we were using hook in older Liferay version.
1) Create Custom portlet data handler
@Component(
property = {
"javax.portlet.name=com.sample.portlet"
},
service =
PortletDataHandler.class
)
public class SamplePortletDataHandler extends
BasePortletDataHandler
{
// Override methods which you required to override
}
2) Create Custom Model Listner
@Component(
immediate = true,
service = ModelListener.class
)
public class LayoutModelListener extends BaseModelListener<Layout>
{
// Override methods which you required
}
3) Create Custom workflow handler
@Component(
property = {"model.class.name=com.sample.model.SampleEntity"},
service = WorkflowHandler.class
)
public abstract class SampleWorkflowHandler extends BaseWorkflowHandler
{
// Override methods which you required
}
4) Custom Action
@Component(
property = {
"javax.portlet.name=" + PollsPortletKeys.POLLS,
"javax.portlet.name=" + PollsPortletKeys.POLLS_DISPLAY,
"mvc.command.name=/polls/edit_question"
},
service = MVCActionCommand.class
)
public class CustomMVCActionCommand extends BaseMVCActionCommand
{
// Override methods which you required
}
5) Custom Render
@Component(
property = {
"javax.portlet.name=" + PollsPortletKeys.POLLS_DISPLAY,
"mvc.command.name=/polls_display/view"
},
service = MVCRenderCommand.class
)
public class CustomActionMVCRenderCommand implements MVCRenderCommand
{
// Override methods which you required
}
6) Override Liferay Language Properties
@Component(
property = { "language.id=en_US" },
service = ResourceBundle.class
)
public class ENResourceBundleComponent extends ResourceBundle {
@Override
protected Object handleGetObject(String key) {
return _resourceBundle.getObject(key);
}
@Override
public Enumeration<String> getKeys() {
return _resourceBundle.getKeys();
}
private final ResourceBundle _resourceBundle = ResourceBundle.getBundle(
"content.Language", UTF8Control.INSTANCE);
}
7) Override Liferay Module Language Properties
@Component(
immediate = true,
property = {
"bundle.symbolic.name=com.liferay.polls.web",
"resource.bundle.base.name=content.Language",
"servlet.context.name=polls-web"
}
)
public class ResourceBundleLoaderComponent implements ResourceBundleLoader {
@Override
public ResourceBundle loadResourceBundle(String languageId) {
return _resourceBundleLoader.loadResourceBundle(languageId);
}
@Reference(target = "(bundle.symbolic.name=com.liferay.polls.web)")
public void setResourceBundleLoader(
ResourceBundleLoader resourceBundleLoader) {
_resourceBundleLoader = new AggregateResourceBundleLoader(
new CacheResourceBundleLoader(
new ClassResourceBundleLoader(
"content.Language",
ResourceBundleLoaderComponent.class.getClassLoader())),
resourceBundleLoader);
}
private AggregateResourceBundleLoader _resourceBundleLoader;
}
8) Override Liferay services
@Component(service = ServiceWrapper.class)
public class CustomUserLocalService extends UserLocalServiceWrapper {
// Override methods which you require
}
Note:
Portal-ext.prioperties cannot be override through OSGi and you will have to manually update portal-ext.properties which we are keeping inside WEB-INF/classes
Before we jump into steps, let me light up regarding spring mvc. Actually Spring MVC is purely used for web project architect and there is no any specific intention to get it convert into OSGi module jar. So here we may not be able to convert it into module jar but such kind of portlets will get deployed as a war file only
and Liferay container will convert into OSGi compatible WAB (Web Application Bundle) project by
Liferay WAB Generator.
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