Examples of org.apache.camel.Component

org.apache.camel.Component
emq.apache.org/camel/component.html">component is a factory of {@link Endpoint} objects. @version $Revision: 519901 $


    public Component getComponent(String name) {
        // synchronize the look up and auto create so that 2 threads can't
        // concurrently auto create the same component.
        synchronized (components) {
            Component component = components.get(name);
            if (component == null && autoCreateComponents) {
                try {
                    if (log.isDebugEnabled()) {
                        log.debug("Using ComponentResolver: {} to resolve component with name: {}", getComponentResolver(), name);
                    }

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            return component;
        }
    }


    public <T extends Component> T getComponent(String name, Class<T> componentType) {
        Component component = getComponent(name);
        if (componentType.isInstance(component)) {
            return componentType.cast(component);
        } else {
            String message;
            if (component == null) {
                message = "Did not find component given by the name: " + name;
            } else {
                message = "Found component of type: " + component.getClass() + " instead of expected: " + componentType;
            }
            throw new IllegalArgumentException(message);
        }
    }

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        }
    }


    public Component removeComponent(String componentName) {
        synchronized (components) {
            Component oldComponent = components.remove(componentName);
            if (oldComponent != null) {
                try {
                    stopServices(oldComponent);
                } catch (Exception e) {
                    log.warn("Error stopping component " + oldComponent + ". This exception will be ignored.", e);

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                // Use the URI prefix to find the component.
                String splitURI[] = ObjectHelper.splitOnCharacter(uri, ":", 2);
                if (splitURI[1] != null) {
                    scheme = splitURI[0];
                    log.trace("Endpoint uri: {} is from component with name: {}", uri, scheme);
                    Component component = getComponent(scheme);


                    // Ask the component to resolve the endpoint.
                    if (component != null) {
                        log.trace("Creating endpoint from uri: {} using component: {}", uri, component);


                        // Have the component create the endpoint if it can.
                        if (component.useRawUri()) {
                            answer = component.createEndpoint(rawUri);
                        } else {
                            answer = component.createEndpoint(uri);
                        }


                        if (answer != null && log.isDebugEnabled()) {
                            log.debug("{} converted to endpoint: {} by component: {}", new Object[]{URISupport.sanitizeUri(uri), answer, component});
                        }

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        if (text != null && !text.startsWith("properties:")) {
            // No component, assume default tokens.
            if (pc == null && text.contains(PropertiesComponent.DEFAULT_PREFIX_TOKEN)) {


                // try to lookup component, as we may be initializing CamelContext itself
                Component existing = lookupPropertiesComponent();
                if (existing != null) {
                    if (existing instanceof PropertiesComponent) {
                        pc = (PropertiesComponent) existing;
                    } else {
                        // properties component must be expected type
                        throw new IllegalArgumentException("Found properties component of type: " + existing.getClass() + " instead of expected: " + PropertiesComponent.class);
                    }
                }


                if (pc != null) {
                    // the parser will throw exception if property key was not found

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        addService(shutdownStrategy);
        addService(packageScanClassResolver);


        // eager lookup any configured properties component to avoid subsequent lookup attempts which may impact performance
        // due we use properties component for property placeholder resolution at runtime
        Component existing = lookupPropertiesComponent();
        if (existing != null) {
            // store reference to the existing properties component
            if (existing instanceof PropertiesComponent) {
                propertiesComponent = (PropertiesComponent) existing;
            } else {
                // properties component must be expected type
                throw new IllegalArgumentException("Found properties component of type: " + existing.getClass() + " instead of expected: " + PropertiesComponent.class);
            }
        }


        // start components
        startServices(components.values());

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    public Component getComponent(String name) {
        // synchronize the look up and auto create so that 2 threads can't
        // concurrently auto create the same component.
        synchronized (components) {
            Component component = components.get(name);
            if (component == null && autoCreateComponents) {
                try {
                    component = getComponentResolver().resolveComponent(name, this);
                    if (component != null) {
                        addComponent(name, component);

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            return component;
        }
    }


    public <T extends Component> T getComponent(String name, Class<T> componentType) {
        Component component = getComponent(name);
        if (componentType.isInstance(component)) {
            return componentType.cast(component);
        } else {
            throw new IllegalArgumentException("The component is not of type: " + componentType + " but is: "
                                               + component);

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     *                was not previously added.
     * @return
     */
    public Component getOrCreateComponent(String componentName, Callable<Component> factory) {
        synchronized (components) {
            Component component = components.get(componentName);
            if (component == null) {
                try {
                    component = factory.call();
                    if (component == null) {
                        throw new RuntimeCamelException("Factory failed to create the " + componentName
                                                        + " component, it returned null.");
                    }
                    components.put(componentName, component);
                    component.setCamelContext(this);
                } catch (Exception e) {
                    throw new RuntimeCamelException("Factory failed to create the " + componentName
                                                    + " component", e);
                }
            }

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                    // Use the URI prefix to find the component.
                    String splitURI[] = ObjectHelper.splitOnCharacter(uri, ":", 2);
                    if (splitURI[1] != null) {
                        String scheme = splitURI[0];
                        Component component = getComponent(scheme);


                        // Ask the component to resolve the endpoint.
                        if (component != null) {
                            // Have the component create the endpoint if it can.
                            answer = component.createEndpoint(uri);
                        }
                    }
                    if (answer == null) {
                        answer = createEndpoint(uri);
                    }

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