Examples with ServiceMetadataImpl org.apache.aries.blueprint.reflect.ServiceMetadataImpl used on opensource projects

Example 1 with ServiceMetadataImpl

use of org.apache.aries.blueprint.reflect.ServiceMetadataImpl in project aries by apache.

the class Parser method parseService.

private ComponentMetadata parseService(Element element, boolean topElement) {
    ServiceMetadataImpl service = new ServiceMetadataImpl();
    boolean hasInterfaceNameAttribute = false;
    if (topElement) {
        service.setId(getId(element));
        service.setActivation(parseActivation(element));
    } else {
        service.setActivation(ComponentMetadata.ACTIVATION_LAZY);
    }
    if (element.hasAttribute(INTERFACE_ATTRIBUTE)) {
        service.setInterfaceNames(Collections.singletonList(element.getAttribute(INTERFACE_ATTRIBUTE)));
        hasInterfaceNameAttribute = true;
    }
    if (element.hasAttribute(REF_ATTRIBUTE)) {
        service.setServiceComponent(new RefMetadataImpl(element.getAttribute(REF_ATTRIBUTE)));
    }
    if (element.hasAttribute(DEPENDS_ON_ATTRIBUTE)) {
        service.setDependsOn(parseList(element.getAttribute(DEPENDS_ON_ATTRIBUTE)));
    }
    String autoExport = element.hasAttribute(AUTO_EXPORT_ATTRIBUTE) ? element.getAttribute(AUTO_EXPORT_ATTRIBUTE) : AUTO_EXPORT_DEFAULT;
    if (AUTO_EXPORT_DISABLED.equals(autoExport)) {
        service.setAutoExport(ServiceMetadata.AUTO_EXPORT_DISABLED);
    } else if (AUTO_EXPORT_INTERFACES.equals(autoExport)) {
        service.setAutoExport(ServiceMetadata.AUTO_EXPORT_INTERFACES);
    } else if (AUTO_EXPORT_CLASS_HIERARCHY.equals(autoExport)) {
        service.setAutoExport(ServiceMetadata.AUTO_EXPORT_CLASS_HIERARCHY);
    } else if (AUTO_EXPORT_ALL.equals(autoExport)) {
        service.setAutoExport(ServiceMetadata.AUTO_EXPORT_ALL_CLASSES);
    } else {
        throw new ComponentDefinitionException("Illegal value (" + autoExport + ") for " + AUTO_EXPORT_ATTRIBUTE + " attribute");
    }
    String ranking = element.hasAttribute(RANKING_ATTRIBUTE) ? element.getAttribute(RANKING_ATTRIBUTE) : RANKING_DEFAULT;
    try {
        service.setRanking(Integer.parseInt(ranking));
    } catch (NumberFormatException e) {
        throw new ComponentDefinitionException("Attribute " + RANKING_ATTRIBUTE + " must be a valid integer (was: " + ranking + ")");
    }
    // Parse elements
    NodeList nl = element.getChildNodes();
    for (int i = 0; i < nl.getLength(); i++) {
        Node node = nl.item(i);
        if (node instanceof Element) {
            Element e = (Element) node;
            if (isBlueprintNamespace(e.getNamespaceURI())) {
                if (nodeNameEquals(e, INTERFACES_ELEMENT)) {
                    if (hasInterfaceNameAttribute) {
                        throw new ComponentDefinitionException("Only one of " + INTERFACE_ATTRIBUTE + " attribute or " + INTERFACES_ELEMENT + " element must be used");
                    }
                    service.setInterfaceNames(parseInterfaceNames(e));
                } else if (nodeNameEquals(e, SERVICE_PROPERTIES_ELEMENT)) {
                    List<MapEntry> entries = parseServiceProperties(e, service).getEntries();
                    service.setServiceProperties(entries);
                } else if (nodeNameEquals(e, REGISTRATION_LISTENER_ELEMENT)) {
                    service.addRegistrationListener(parseRegistrationListener(e, service));
                } else if (nodeNameEquals(e, BEAN_ELEMENT)) {
                    if (service.getServiceComponent() != null) {
                        throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element can be set");
                    }
                    service.setServiceComponent((Target) parseBeanMetadata(e, false));
                } else if (nodeNameEquals(e, REF_ELEMENT)) {
                    if (service.getServiceComponent() != null) {
                        throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element can be set");
                    }
                    String component = e.getAttribute(COMPONENT_ID_ATTRIBUTE);
                    if (component == null || component.length() == 0) {
                        throw new ComponentDefinitionException("Element " + REF_ELEMENT + " must have a valid " + COMPONENT_ID_ATTRIBUTE + " attribute");
                    }
                    service.setServiceComponent(new RefMetadataImpl(component));
                } else if (nodeNameEquals(e, REFERENCE_ELEMENT)) {
                    if (service.getServiceComponent() != null) {
                        throw new ComponentDefinitionException("Only one of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element can be set");
                    }
                    service.setServiceComponent((Target) parseReference(e, false));
                }
            }
        }
    }
    // Check service
    if (service.getServiceComponent() == null) {
        throw new ComponentDefinitionException("One of " + REF_ATTRIBUTE + " attribute, " + BEAN_ELEMENT + " element, " + REFERENCE_ELEMENT + " element or " + REF_ELEMENT + " element must be set");
    }
    // Check interface
    if (service.getAutoExport() == ServiceMetadata.AUTO_EXPORT_DISABLED && service.getInterfaces().isEmpty()) {
        throw new ComponentDefinitionException(INTERFACE_ATTRIBUTE + " attribute or " + INTERFACES_ELEMENT + " element must be set when " + AUTO_EXPORT_ATTRIBUTE + " is set to " + AUTO_EXPORT_DISABLED);
    }
    // Check for non-disabled auto-exports and interfaces
    if (service.getAutoExport() != ServiceMetadata.AUTO_EXPORT_DISABLED && !service.getInterfaces().isEmpty()) {
        throw new ComponentDefinitionException(INTERFACE_ATTRIBUTE + " attribute or  " + INTERFACES_ELEMENT + " element must not be set when " + AUTO_EXPORT_ATTRIBUTE + " is set to anything else than " + AUTO_EXPORT_DISABLED);
    }
    ComponentMetadata s = service;
    // Parse custom attributes
    s = handleCustomAttributes(element.getAttributes(), s);
    // Parse custom elements;
    s = handleCustomElements(element, s);
    return s;
}