Hi, Am 04.01.2013 um 08:23 schrieb <[email protected]> <[email protected]>:
> Hi > > I intend to use extra (optional) XML attributes with the Metatype Service. Before commenting in detail, I would be interested to know what exactly you want to achieve by using additional attributes on object class and attribute definitions. Regards Felix > For this purpose I examined the > Felix metatype service implementation and found the class > org.apache.felix.metatype.OptionalAttributes, > which is extended by AD, OCD, ... . But unluckily this class is neither > inherited by LocalizedObjectClassDefinition > nor by LocalizedAttributeDefinition, which makes it quite useless for the > moment. > > Another Problem is that OptionalAttributes does not support XML namespaces > for the attribute names. > The underlying Map should use something like javax.xml.namespace.QName as key > and not just the name > of the attribute (String). Note, XML namespace support is crucial as extra > XML attribute have to be in a different (##other) namespace > (see "Metatype Service Specifiaction" (Version 1.2), section 105.9 "XML > Schema"). > > The above observations lead me to the following question: > > 1. Is it still a requirement for Felix subprojects to avoid dependencies > on packages like java.xml.** and rely on kxml2 instead? > a. If so, then I could try create a patch for metatype service which > will add support for extra XML attributes (including XML namespace support > but not using javax.xml.namespace.QName), > so that extra XML attributes could be retrieved from AD, OCD, ..., > LocalizedObjectClassDefinition and LocalizedAttributeDefinition instances. > b. If not, then I could try to create a similar patch as described above > (a) but using javax.xml.namespace.QName instead. > > Note, the class javax.xml.namespace.QName is part of JavaSE since version 1.5 > older versions as well as JavaME do not contain that class. > > Alex > >
