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 class DefaultCamelContextTest extends TestCase {


    public void testAutoCreateComponentsOn() {
        DefaultCamelContext ctx = new DefaultCamelContext();
        Component component = ctx.getComponent("bean");
        assertNotNull(component);
        assertEquals(component.getClass(), BeanComponent.class);
    }

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    }


    public void testAutoCreateComponentsOff() {
        DefaultCamelContext ctx = new DefaultCamelContext();
        ctx.setAutoCreateComponents(false);
        Component component = ctx.getComponent("bean");
        assertNull(component);
    }

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    /**
     * @return the executor
     */
    public synchronized ScheduledExecutorService getExecutorService() {
        if (executorService == null) {
            Component c = getComponent();
            if (c != null && c instanceof DefaultComponent) {
                DefaultComponent dc = (DefaultComponent) c;
                executorService = dc.getExecutorService();
            }
            if (executorService == null) {

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    public List<String> completeEndpointPath(String componentName, Map<String, Object> endpointParameters,
                                             String completionText) throws Exception {
        if (completionText == null) {
            completionText = "";
        }
        Component component = context.getComponent(componentName, false);
        if (component != null) {
            ComponentConfiguration configuration = component.createComponentConfiguration();
            configuration.setParameters(endpointParameters);
            return configuration.completeEndpointPath(completionText);
        } else {
            return new ArrayList<String>();
        }

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            return new ArrayList<String>();
        }
    }


    public String componentParameterJsonSchema(String componentName) throws Exception {
        Component component = context.getComponent(componentName);
        if (component != null) {
            ComponentConfiguration configuration = component.createComponentConfiguration();
            return configuration.createParameterJsonSchema();
        } else {
            return null;
        }
    }

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            public Object evaluate(Exchange exchange) {
                try {
                    if (locations != null) {
                        // the properties component is optional as we got locations
                        // getComponent will create a new component if none already exists
                        Component component = exchange.getContext().getComponent("properties");
                        PropertiesComponent pc = exchange.getContext().getTypeConverter()
                                .mandatoryConvertTo(PropertiesComponent.class, component);
                        // enclose key with {{ }} to force parsing
                        String[] paths = locations.split(",");
                        return pc.parseUri(pc.getPrefixToken() + key + pc.getSuffixToken(), paths);
                    } else {
                        // the properties component is mandatory if no locations provided
                        Component component = exchange.getContext().hasComponent("properties");
                        if (component == null) {
                            throw new IllegalArgumentException("PropertiesComponent with name properties must be defined"
                                    + " in CamelContext to support property placeholders in expressions");
                        }
                        PropertiesComponent pc = exchange.getContext().getTypeConverter()

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    public Component getComponent(String name, boolean autoCreateComponents) {
        // 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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