[ http://issues.apache.org/jira/browse/TUSCANY-773?page=all ]
Venkatakrishnan updated TUSCANY-773:
------------------------------------
Attachment: Tuscany-spec-sca-02-Oct.diff
Tuscany-kernel-spi-02-Oct.diff
Tuscany-kernel-core-02-Oct.diff
HI Raymond,
Here are the patches that do the following: -
- Load property values defined in application components copying default values
wherever the value is absent and the default specified in the corresponding
componentType.
- Enforces the 'override' options semantics to property defintions in scdls
- Enables the JavaCompnentBuilder to transform the property values from xml
document form to appropriate java object instances and also creates the
corresponding object factories.
I have successfully tested this for a simple component as this...
<component name="HelloWorldJavaReference">
<implementation.java class="helloworld.HelloWorldServiceImpl"/>
<property name="greeting">
Hullow
</property>
<property name="helloSayer">
<firstName>Tuscany</firstName>
<lastName>World</lastName>
</property>
</component>
Please review if the approach used is right and scalable.
Other Concerns
----------------------
*) I am unable to use the .componentType file. If I used one then I get the
following exception:
org.apache.tuscany.spi.loader.UnrecognizedElementException:
{http://www.osoa.org/xmlns/sca/1.0}componentType
[{http://www.osoa.org/xmlns/sca/1.0}componentType]
Context stack trace: [application][HelloWorldJavaReference]
at
org.apache.tuscany.core.loader.LoaderRegistryImpl.load(LoaderRegistryImpl.java:113)
Looks like there is problem if I mention JavaComponentType.class in the load
method. I guess this because all othere containers have worked around this
aspect.
Am I missing something here?
*) When I initially clipped the existing property value loading behaviour in
the ComponentLoader, the system components could never get initialized. To go
forward with this, I decided to address only application components. To this
end, I retained the existing behaviour when the component is a
SystemImplementation and changed it for other cases. I am not clear about the
direction for this.
Thanks
- Venkat
> Fix Property Value Loading from Component Definitions
> -----------------------------------------------------
>
> Key: TUSCANY-773
> URL: http://issues.apache.org/jira/browse/TUSCANY-773
> Project: Tuscany
> Issue Type: Bug
> Components: Java SCA Core
> Affects Versions: Java-M2
> Reporter: Venkatakrishnan
> Attachments: Tuscany-kernel-core-02-Oct.diff,
> Tuscany-kernel-spi-02-Oct.diff, Tuscany-spec-sca-02-Oct.diff
>
>
> Currently property loading for application components does not work. There
> is NPE exception thrown when creating a property instance factory based on
> the property value defined in the Component Defn.
> Also the property loading works only for simply types whose values can be
> represented as a simple xml text content.
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