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https://issues.apache.org/jira/browse/ARIES-1290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14296656#comment-14296656
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Grzegorz Grzybek commented on ARIES-1290:
-----------------------------------------

I checked that the schema locations are correctly fetched using relevant 
bundles.
I mean, if we have:
{code:xml}
<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0";
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
        xmlns:cm="http://aries.apache.org/blueprint/xmlns/blueprint-cm/v1.3.0";
        
xmlns:ext12="http://aries.apache.org/blueprint/xmlns/blueprint-ext/v1.2.0";
        xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 
http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd";>

    <cm:property-placeholder persistent-id="my-pid" placeholder-prefix="[[" 
placeholder-suffix="]]" ext12:ignore-missing-locations="false" 
ext12:system-properties="fallback">
        <cm:default-properties>
            <!-- These properties will be replaced at build time by Maven  -->
            <cm:property name="jdbc.url" value="${jdbc.postgresql.url}" />
            <cm:property name="jdbc.user" value="${jdbc.postgresql.user}" />
            <cm:property name="jdbc.password" 
value="${jdbc.postgresql.password}" />
        </cm:default-properties>
        <ext12:location>a</ext12:location>
    </cm:property-placeholder>

</blueprint>
{code}
then [this 
code|https://github.com/apache/aries/blob/trunk/blueprint/blueprint-core/src/main/java/org/apache/aries/blueprint/namespace/NamespaceHandlerRegistryImpl.java#L319]
 uses correct bundle class loader (of blueprint-cm bundle for cm: and 
blueprint-core for ext:) to fetch the resources.

> Reflect cm.CmPropertyPlaceholder -> ext.PropertyPlaceholder relationship in 
> XSD
> -------------------------------------------------------------------------------
>
>                 Key: ARIES-1290
>                 URL: https://issues.apache.org/jira/browse/ARIES-1290
>             Project: Aries
>          Issue Type: Bug
>          Components: Blueprint
>    Affects Versions: blueprint-cm-1.0.4
>            Reporter: Grzegorz Grzybek
>
> Because {{org.apache.aries.blueprint.compendium.cm.CmPropertyPlaceholder}} 
> directly extends {{org.apache.aries.blueprint.ext.PropertyPlaceholder}} and 
> relevant namespace handler looks for {{ext}} namespace elements/attributes in 
> {{cm}} version of the placeholder, XSDs should reflect this fact.



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