Hi Steven, Thanks for the clarification. I also agree with you, but what I can not understand is what JAXB2 generated classes are doing.
Please look at the attached books schema and the corresponding BookType.Promotion class. My problem is how can I look at BookType class and decide Promotion element as a choice? For the time being the code I wrote identify that as a sequence with minOccurs=0. Thanks, SD On 6/24/07, Steven Dolg <[EMAIL PROTECTED]> wrote:
Hi Sachith, a Choice is used to select 1 of n available options (when maxOccurs=1) or to select m of n available options (when maxOccurs>1). Your description of the class implies that all properties might be missing but also all properties might be set. So a Choice with maxOccurs=1 won't fit (since a maximum of one property can be set). I also understand that each property can occur only once. So a Choice with maxOccurs>1 won't fit either (since one can chose any option more than once). So this must be a sequence where every element has minOccurs=0. Hth, Steven ----- Original Message ----- *From:* Sachith Dhanushka <[EMAIL PROTECTED]> *To:* dev@castor.codehaus.org *Sent:* Sunday, June 24, 2007 1:58 AM *Subject:* Re: [castor-dev] Approaches for Schema Generation Hi, I uploaded a basic implementation as I promissed earlier in to CASTOR-2016. Werner, please be kind enough to review the code and provide me with some feedback. In the mean time I will keep on improving the code. I have a small question on schema handling. There is a JAXB2 annotated class which has set of non-requried properties (REQUIRED=false). All the properties that this class has are non-required. Should these properties included under Choice or under sequence with minOcurrs=0? This is bit of a tricky question for me as the annotations are not helping me here. I appreciate if some one can help me to resolve this problem. Thanks, SD On 6/21/07, Sachith Dhanushka <[EMAIL PROTECTED]> wrote: > > Hi Werner, > > Thanks for the answer. So I won't use any JAXB2 RI code. > > I am now working with JAXB2 reflection library found in https://jaxb2-reflection.dev.java.net/ > and creating Castor model. Will post my initial bit of code soon. > > Thanks, > SD > > On 6/20/07, Werner Guttmann < [EMAIL PROTECTED]> wrote: > > > > Sachith, > > > > your task is to come up with a solution that adds certain > > functionality > > to Castor to make it (or parts thereof) JAXB compliant. In the context > > of this statement, JAXB compliance refers to the specification. > > > > Clearly, it cannot be as simple as taking parts of the JAXB reference > > implementation and integrate it with Castor. There's plenty of issues > > with this approach, which I should not have to explain to you, one of > > them being licensing. > > > > Yes, nobody wants to re-invent the wheel, but simply pulling parts of > > the JAXB RI into Castor is not an option. > > > > Regards > > Werner > > > > Sachith Dhanushka wrote: > > > Hi Werner and all, > > > > > > This is what I am trying to do now. As I commented in the JIRA also, > > now > > > I am using the java.net <http://java.net> jaxb2 reflection library > > > instead of annongen Jam. So I am working on that now. > > > > > > In addition to that please let me know the feasibility of the > > following > > > approach as well. When I looked in to JAXB2 schema generation, I can > > use > > > the existing JAXB2 RI to get a DOM model of the schema. In other > > words, > > > we can give set of JAXB annotated classes and get the schema as a > > DOM > > > model. Then we can create our Castor schema model by looking at the > > DOM > > > model. The problem with this approach is that we get an intermediate > > DOM > > > object model. But the advantage is this approach is that this is > > less > > > error-prone and standard as we can use the implementation from the > > JAXB > > > RI itself. > > > > > > Please let me know what you think about this approach. > > > > > > Thanks, > > > SD > > > > > > --------------------------------------------------------------------- > > To unsubscribe from this list please visit: > > > > http://xircles.codehaus.org/manage_email > > > > >
books.xsd
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BookType.java
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