Hi Rajath, On Sun, Jun 02, 2013 at 12:12:11AM +0530, Rajath Shashidhara wrote: > Hello, > > I read the wikipages about UCB and UCP(all the links in these mails), One > thing I did not understand is: > What functions are called under what situations from the UCP? > What are those functions supposed to do? > > For example: > what is the function: > registerInstance() supposed to do? > > What should be implemented in each of these methods?
In these cases, you have to consult the API reference: http://www.openoffice.org/api/docs/common/ref/com/sun/star/ucb/ContentProvider.html Both XContentIdentifierFactory and XParameterizedContentProvider are optional. This is a little tricky: in general, an optional interface means that you don't need to implement it if you don't need to; but in several cases, new properties and interfaces are introduced as optional, as a workaround, just because the service is published and cannot be modified. For now, only implement the required interfaces, comment out the optional ones, and later on, when you have the whole picture, you can come back to this. The main interface for the css.ucb.ContentProvider is css.ucb.XContentProvider. Concentrate on queryContent() http://www.openoffice.org/api/docs/common/ref/com/sun/star/ucb/XContentProvider.html#queryContent "creates a new XContent instance, if the given XContentIdentifier matches a content provided by the implementation of this interface." If the content identifier is supported by your implementation (did you already define this?), you have to return an object implementing http://www.openoffice.org/api/docs/common/ref/com/sun/star/ucb/Content.html Here again, some interface are optionals; and in the documentation of XCommandProcessor in this page you can find the set of commands and properties, some are mandatory, some are optional. To create this new Java UNO object, right-click on the package, and select New - Other.... On the "New File" dialog, choose "Apache OpenOffice" under "Categories" and "Java UNO Object" under "File Types". On the next step, select com.sun.star.ucb.Content as the "IDL Type" to implement. IMO it is better to start implementing this step by step, and not using the file picker to test, but a macro, like this one: http://people.apache.org/~arielch/api/UCB_demo.odt Start with "getPropertyValues" and do not bother by now with authentication (this is a rather complex subject, IMO it is better to get a general picture now), simply hard-code user and password in your code. You can try with http://cmis.alfresco.com/ (with user=admin and password=admin) or set-up your own server. "getPropertyValues" is the most basic UCB command. You have to implement the mandatory properties. And implemente it in a way that you don't download the file from the server, but simply read the metadata, see http://chemistry.apache.org/java/examples/example-read-meta-content.html You have to map CMIS metadata with UCB properties. Regards -- Ariel Constenla-Haile La Plata, Argentina
pgpo9TMumdANW.pgp
Description: PGP signature
