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The configuration handler aims to manage component configuration. This handler allows the OSGi configuration admin to push a configuration to a componentcreate, destroy or update instances. A configuration is a set of couple (name, value). The name can be a field name or a property name associated to a field or/and a method.

Configurable Property configuration

Not all the component instances are configurable. A component set type sets its configurable part properties by adding in this metadata a ConfigurableProperty element. These properties are not necessarily service property but can be internal component property. Moreover, there are not declared inside a Provides element but directly under the Component element.

Examples

XML Metadata

<iPOJO>
<Component 

className="fr.imag.adele.escoffier.hello.impl.HelloServiceImpl">

   <Provides>
       <Property name="foo" field="m_foo"/>

   </Provides>

   <Properties configurable="true"/>

       <Property name="foo" field="m_foo"/>

       <Property name="array" field="my_array"/>

       <Properties name="hello.language" type="java.lang.String"/>

   </Properties>

</Component>

<instance component="fr.imag.adele.escoffier.hello.impl.HelloServiceImpl" name="HelloService">

   <property name="foo" value="bar"/>

   <property name="array" value="\{1, 2, 3}"/>

   <property name="hello.language" value="en"/>

</

instance
</iPOJO>

In the previous snippet, you can see three configurable properties. The first is a configurable property attached to the field foo that is a service property too. The second is an array property. The third property is a static property, in the sense that no field is attached to this property.

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