August 2006 - jboss-dev-forums - Jboss List Archives

[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by alesj

"adrian(a)jboss.org" wrote : | I don't even see why you are doing this? | All you need to do is to modify the kernel registry plugin entry point | getEntry() to use your contextsByClass. | http://docs.jboss.org/nightly/microkernel/docs/reference/en/html/registry... | Ok, I added this code to AbstractKernelController.getEntry | else if (name instanceof Class) | return getContextByClass((Class)name); | But this should probably be in a seperate KernelRegistryPlugin impl (requires KernelController). Where to register/unregister such plugin into KernelRegistry? Or where to install/uninstall instance - so that it gets automatically picked up by KernelRegistry? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965272#3965272 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965272

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by adrian＠jboss.org

"alesj" wrote : | Ok, forget then about 'placeholder' approach? | Yes. It was only a temporary solution so you wouldn't have to mess around with the visitor. anonymous wrote : | Calling revisit from where - ConfiguredAction - though AbstractKernelCOntrollerContext? | >From the DescribeAction. | BeanMetaData metaData = context.getBeanMetaData(); | if (metaData.getBean() != null) | { | BeanInfo info = configurator.getBeanInfo(metaData); | context.setBeanInfo(info); | | <snipped/> | | describeMetaData(); // similar to preprocessMetaData(); | } | The first visit is to read the metadata that can be determined without the classloader/class (which up until now has been all of it except the AOP stuff). The second visit is once the class is resolved and the BeanInfo is available. | public interface MetaDataVisitor[Node] | { | void initialVisit(...); // the original visit(...) | void describeVisit(...); | } | You can then do all your processing in the describe visit knowing that context.getBeanInfo() will be available. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965250#3965250 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965250

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by alesj

"adrian(a)jboss.org" wrote : The alternative which is to fix it up by hand in the DescribeAction | (like you are doing now with the placeholder) is not very extensible | going forwards. It really needs a visitor pattern. Ok, forget then about 'placeholder' approach? Rewrite it to revisit pattern + anonymous wrote : Of course, every metadata class that takes part in this would need | to implement an interface that defines the getType(), | | e.g. based on what was retrieved from the stack | advmd -> (NewInterface) propertyMetaData.getType() | advmd -> (NewInterface) parameterMetaData.getType() -> (NewInterface) constructor.getType() | | Also, for the parameters, there would need to be some notion | of "index" so you know which parameter you are working with.? Calling revisit from where - ConfiguredAction - though AbstractKernelCOntrollerContext? public void setController(Controller controller) | { | super.setController(controller); | preprocessMetaData(); | } | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965244#3965244 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965244

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by adrian＠jboss.org

The alternative which is to fix it up by hand in the DescribeAction (like you are doing now with the placeholder) is not very extensible going forwards. It really needs a visitor pattern. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965242#3965242 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965242

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by adrian＠jboss.org

Of course, every metadata class that takes part in this would need to implement an interface that defines the getType(), e.g. based on what was retrieved from the stack advmd -> (NewInterface) propertyMetaData.getType() advmd -> (NewInterface) parameterMetaData.getType() -> (NewInterface) constructor.getType() Also, for the parameters, there would need to be some notion of "index" so you know which parameter you are working with. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965241#3965241 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965241

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by adrian＠jboss.org

"alesj" wrote : Is there a view of all possible usage? | You mean besides the xsd? :-) anonymous wrote : | So that I know where and how to look for useful injection information in this MetaData stack. I don't know how you would define something abstract. The information you want comes from the BeanInfo not the MetaData. The MetaData is just the key. e.g. className + property name -> getBeanInfo(className).getProperty(name).getType(); It is even more complicated for parameters since then you have to iterate to constructors and do a "fuzzy match" to try to guess which constructor they mean. The current logic is in the Configurator for matching joinpoints. My guess would be that you would need to: 1) Implement the revisit() of the meta data such that you have the metadata context after the BeanInfo has been determined. a simple way to be to add a visitDescribed() path. 2) The ADVMD then asks its parent on the stack getClass(); which will for a property 3a) Do context.getBeanInfo().getProperty(myName) and return the type for a parameter 4a) Ask the constructor/beanMetaData to guess which constructor will be used from the BeanInfo.getConstructors() and then determine the class from this. The factory and create/.../destroy/install will be the same as the constructor except at least for the factory/install they will have to retrieve the bean info for a different type. Again all this code is in the Configurator in terms of resolving/guessing the specific info. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965238#3965238 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965238

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by alesj

"alesj" wrote : Is there a view of all possible usage? | | So that I know where and how to look for useful injection information in this MetaData stack. Ups, forum ate xml. Is there a view of all possible <injection /> usage? So that I know where and how to look for useful injection information in this MetaData stack. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965237#3965237 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965237

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean instantiate order with contextual injection

by alesj

Is there a view of all possible usage? So that I know where and how to look for useful injection information in this MetaData stack. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965235#3965235 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965235

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean property inspection and actual injection

by alesj

Sorry about that. ;-( View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965226#3965226 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965226

19 years, 7 months

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[Design the new POJO MicroContainer] - Re: Bean property inspection and actual injection

by adrian＠jboss.org

"adrian(a)jboss.org" wrote : What were you trying to fix here? | The real problem was in AbstractKernelDeployer.undeployBean() not uninstalling beans that were in error. I've corrected this, so your test works now. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3965225#3965225 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3965225

19 years, 7 months

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jboss-dev-forums August 2006