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I have a editable template where a component has a design dialog where the template author will enter the values.
and in the design dialog i have a node of select type where the data is bound by using datasource through a servlet where I need to fetch the data from the policy.
and the code for the servlet is as follows. If i dont give policyPath and just get the resource from request.getResource() i am getting contentpolicy as null.
initially when there are no policies a dynamic policy is being created when we get the resource and a nullpointer is being thrown.
So how to handle this initially that no null pointer is thrown and can say there are no policies.
If you want to read data from a policy - then like any other AEM nodes - make sure you referencing the correct path if you want to read the node's properties.
For your code - where did you get it - are you referencing an Adobe doc?
I have used Adobe Experience Manager Help | Using Granite DataSource objects to populate AEM Touch UI objects for binding the data to the dropdown.
For reading policies i have read in some forums that by using ContentPolicyManager to get the policy.