so it is IOC metadata parsing :-)
so the MetaData classes are pretty much the same, what just differ is the
feeding method and you removed some metadata classes ?
> I mimic current metadata classes but add more data, for example, for
> EntityMetaData (so that, i can get rid of JDBC<xxx>MetaData).
> It would be easier to look at the code really.
>
> It is based on SAXParser and MetaDataContentHandler which delegates to
> MetaDataFactory implementation (e.g. EjbJarMetaDataFactory,
> JBossCMPMetaDataFactory, etc)
> Metadata factory is the source for metadata objects. When a new element
> is read, the factory is asked for a new corresponding metadata object.
> The factory can return null (meanning ignore this child). The returned
> metadata object is pushed in a stack.
> Then we read another element and call the factory for a new metadata
> object passing in the parent metadata object from the stack, namesapce
> URI and element name. Again, the factory can ignore by returing null, or
> return a new new object.
> When some text value is read, we call the factory with the current
> metadata object on the stack, element namesapce URI, element name and
> text value. This way I initialize the fields.
> Finally, when the element is read from the file, I pop the element from
> the stack, peek its parent from the stack and call factory to add the
> child to the parent. At this time child also can be validated.
>
> I don't use any special interfaces for metadata objects. The methods are
> discovered by introspection. For example, from EjbJarMetaDataFactory:
>
> // started a new element
> public Object newChild(ApplicationMetaData appMetaData, String
> namespaceURI, String qName)
> {
> Object child = null;
> if("entity".equals(qName))
> {
> child = new EntityMetaData(appMetaData);
> }
> return child;
> }
>
> public void addChild(ApplicationMetaData appMetaData, EntityMetaData entity)
> throws MetaDataException
> {
> // entity is done, can be validated and added
> appMetaData.addEntityBean(entity);
> }
>
> public void setValue(EntityMetaData entity, String namespaceURI,
> String name, String value)
> {
> if("ejb-name".equals(name))
> {
> entity.setEjbName(value);
> entity.setTableName(value);
> }
> else if("home".equals(name))
> {
> entity.setHome(value);
> }
> else if("remote".equals(name))
> ...
>
>
> This how it looks at the end:
>
> ApplicationMetaData metadata = new ApplicationMetaData();
>
> MetaDataReader reader = new MetaDataReader();
>
> InputStream is = getResource("ejb-jar.xml");
> MetaDataFactory factory = new EjbJarMetaDataFactory(metadata);
> reader.setMetaDataFactory(factory);
> reader.parse(is);
> is.close();
>
> is = getResource("jboss.xml");
> factory = new JBossMetaDataFactory(metadata);
> reader.setMetaDataFactory(factory);
> reader.parse(is);
> is.close();
>
> is = getResource("jbosscmp-jdbc.xml");
> factory = new JBossCMPMetaDataFactory(metadata);
> reader.setMetaDataFactory(factory);
> reader.parse(is);
> is.close();
>
> At the end I have ApplicationMetaData populated from all the files. Only
> EjbJar factory creates objects, other factories populate existing ones.
>
> julien viet wrote:
>
>> in what classe are you storing your metadata in what you wrote ? Typed
>> classes (Like EntityMetadata we have now) or generic untyped (like DOM) ?
>>
>> please describe it
>>
>> julien
>
>
>
>
>
> -------------------------------------------------------
> This SF. Net email is sponsored by: GoToMyPC
> GoToMyPC is the fast, easy and secure way to access your computer from
> any Web browser or wireless device. Click here to Try it Free!
> https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl
> _______________________________________________
> JBoss-Development mailing list
> [EMAIL PROTECTED]
> https://lists.sourceforge.net/lists/listinfo/jboss-development
-------------------------------------------------------
This SF. Net email is sponsored by: GoToMyPC
GoToMyPC is the fast, easy and secure way to access your computer from
any Web browser or wireless device. Click here to Try it Free!
https://www.gotomypc.com/tr/OSDN/AW/Q4_2003/t/g22lp?Target=mm/g22lp.tmpl
_______________________________________________
JBoss-Development mailing list
[EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/jboss-development
