1.20. Configuring Bean Contexts

  1. To have the contents of the bean context returned at the end of a Smooks.filterSource process, supply a org.milyn.delivery.java.JavaResult object in the call to the Smooks.filterSource method.

    Example 1.1. 

    // Get the data to filter
StreamSource source = new StreamSource(getClass().getResourceAsStream("data.xml"));

// Create a Smooks instance (cachable)
Smooks smooks = new Smooks("smooks-config.xml");

// Create the JavaResult, which will contain the filter result after filtering
JavaResult result = new JavaResult();

// Filter the data from the source, putting the result into the JavaResult
smooks.filterSource(source, result);

// Getting the Order bean which was created by the Javabean cartridge
Order order = (Order)result.getBean("order");
  2. To access the bean contexts at start-up, specify this in the BeanContext object. You can retrieve it from the ExecutionContext via the getBeanContext() method.

    Example 1.2. 

    // Create a bean to pass on to the Smooks execution context
HashMap<String,Object> transformConfig = new HashMap<String,Object>();
transformConfig.put("Version", new Integer(1));    

// Get the data to filter
StreamSource source = new StreamSource(getClass().getResourceAsStream("data.xml"));
 
// Create a Smooks instance (cachable)
Smooks smooks = new Smooks("smooks-config.xml");
 
// Create the JavaResult, which will contain the filter result after filtering
JavaResult result = new JavaResult();

// Add bean to Smooks execution context
executionContext.getBeanContext().addBean("transformConfig", transformConfig);

// Filter the data from the source, putting the result into the JavaResult
smooks.filterSource(source, result);
 
// Getting the Order bean which was created by the JavaBean cartridge
Order order = (Order)result.getBean("order");
  3. When adding or retrieving objects from the BeanContext make sure you first retrieve a beanId object from the beanIdStore. The beanId object is a special key that ensures higher performance than string keys, although string keys are also supported.
  4. You must retrieve the beanIdStore from the ApplicationContext using the getbeanIdStore() method.
  5. To create a beanId object, call the register("beanId name") method. If you know that the beanId is already registered, then you can retrieve it by calling the getbeanId("beanId name") method.
  6. beanId objects are ApplicationContext-scoped objects. Register them in your custom visitor implementation's initialization method and then put them in the visitor object as properties. You can then use them in the visitBefore and visitAfter methods. The beanId objects and the beanIdStore are thread-safe.