A1 :
CP2JavaWS offers many features (Java services bridge through a JSON filter, an authentication filter, an habilitation filter, master and detail view generation with handling of data persistance through Hibernate for now). However you don’t have to use all of these.

You don’t have to bother with JSON nor servlets, CP2JavaWS takes care of all (through its JSON filter). You work on object level both on client side (ObjJ) and server-side (Java), and just have to provide a file for mapping ObjJ classesnames to jave ones (only names, for custom attributes mapping you have to rely on CPCoding protocol).
You access directly to your Java application/business services (hosted by string container or your custom container, see below).

A2 :
As explained in the documentation you pointed, you can use another container than Spring. There is a provided example (dummy context wrapper).
The documentation lists all the required jars, and there is also a readme.txt file in the distribution that lists all these jars (is more up to date).
The “framework” part of the distribution provides both compiled classes (jars) for spring integration (cp2javaws-springsupport.jar) and core cp2javaWS (cp2javaws-filter.jar), and source code in case of. You don’t need anything else except the listed external libraries (the other code, applicative, will be yours).

The “demo” part of the distribution provides a full working app, that is the application code you will normally write. It is provided as source only (as I’m not allowed to distribute a war that contains all the required libraries dependencies).

A3 :
If you are just using ObjJ to Java services bridge, that is up to your Java services implementation to use/choose you persistance framework (and coding use of it).
If your are using the provided CP2JavaWSTableViewDelegate or Direct2CP mode (master/detail view generation), then you can either rely on the generic DAO service (based on Hibernate for now – I would have to provide another one for EJB3/JPA), or you can specify you own CRUD DAO service (then you will implement it using what you want, EJB3/JPA, etc).
This is stated in the online documentation, and a custom CRUD service (service2) is provided in the demo.

A4 :
Besides the provided documentation you can find a full working demo application (its source code) in the distribution.
For now, the only details that aren’t in the online documentation are authentication and habilitation filters config, but I mentioned you can refer to the demo’s web.xml. I plan to add these also in the online documentation.

Hope this helps, and I’m really looking forward to your project ! You can count on my support.

Note : I will release soon an update, as there is a problem in “sessionUserKey” information (for now passed from the authentication filter’s init to the habilitation filter’s init). As the order of filters’s init won’t always be the same in a servlet container, I will have to modify the code and pass the info also in the habilitation filter’s config and get it in the same way). The error didn’t show in my server Tomcat configuration but happened in another older version (it leads to a nullpointer in some old Tomact 5.5.x versions due to a Tomcat bug).

There is no Spring or Hibernate in our configuration, the application design is as follows:
- The persistence layer is EJB3 entity beans
- The service layer is EJB3 session beans
- Clients send JSON requests, which are handled by servlets
- Clients are Cappuccino on web browsers

Q1: Can we use CP2JavaWS in this scenario, and if so, which features would be available?

Q2: Which classes exactly would be required (or not required) from the CP2JavaWS src distribution? What other classes would we have to provide?

Q3: What configuration would be required in order to support EJB3/JPA, without Spring / Hibernate?

Q4: Is there any step by step documentation that we can follow, in order to understand how to make this work? The documentation that we have found so far has proven really poor, and assumes a good level of understanding of the CP2JavaWS framework. We have none. Any help would be greatly appreciated.

Many thanks!