[ARIES-1424] Support to load namespace handler for class implementing the interface org.apache.aries.blueprint.NamespaceHandler

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Web
• Assignee: Unassigned
• Reporter: Moulliard Charles
• Created: 30/Sep/15 12:13
• Updated: 30/Sep/15 12:13

Description

The existing code of the Apache Aries Blueprint Web (org.apache.aries.blueprint.web.BlueprintContextListener) scans to find @Namespaces annotated class for namespace handler passed as parameter
like that within the web.xml file

    <context-param>
        <param-name>blueprintNamespaceHandlers</param-name>
        <param-value>org.apache.camel.blueprint.handler.CamelNamespaceHandler</param-value>
    </context-param>

So I propose to improve existing code to discover also class (like Apache Camel Blueprint - CamelNamespaceHandler) implementing - org.apache.aries.blueprint.NamespaceHandler

Namespaces namespaces = nsHandler.getClass().getAnnotation(Namespaces.class);
            if (namespaces != null) {
                for (String ns : namespaces.value()) {
                    servletContext.log("Namespace handler retrieved for @Namespaces : " + ns);
                    nsSet.addNamespace(URI.create(ns), nsHandler.getSchemaLocation(ns), nsHandler);   
                }
            } else {
                Class<?>[] interfaces = nsHandler.getClass().getInterfaces();
                for(Class<?> clazz : interfaces) {
                    String ns = clazz.getName();
                    if (ns.equals("org.apache.aries.blueprint.NamespaceHandler")) {
                        servletContext.log("Class implementing Blueprint NamespaceHandler : " + nsHandler.getClass().getName());
                        nsSet.addNamespace(URI.create(nsHandler.getClass().getName()), nsHandler.getSchemaLocation(nsHandler.getClass().getName()), nsHandler);
                    }
                }