Examples of org.milyn.javabean.context.BeanContext

org.milyn.javabean.context.BeanContext
Bean Context
This class represents a context of bean's and the means to get and set there instances.
This class uses a {@link BeanIdStore} to optimize the access performance. Ifall the {@link BeanId} objects are registered with the BeanIdStore before this objectis created then you get 'direct access' performance.
For performance reasons it is best to register all BeanId objects up front. Because if new BeanId objects are registered after the BeanContext is created then the BeanContext needs to do synchronize with the BeanIdStore,
It is possible to get the bean by it's bean id String name. However this isn't as fast as using the BeanId objects. @author maurice.zeijen@smies.com

  }


  private void bindValue(String dataString, ExecutionContext executionContext, Fragment source) {
    Object valueObj = decodeDataString(dataString, executionContext);


    BeanContext beanContext = executionContext.getBeanContext();


    if(valueObj == null) {
      beanContext.removeBean(beanId, source);
    } else {
      beanContext.addBean(beanId, valueObj, source);
    }
  }

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public class MILYN_451_Test extends TestCase {


  public void test() throws IOException, SAXException {
    Smooks smooks = new Smooks(getClass().getResourceAsStream("smooks-config.xml"));
    ExecutionContext execCtx = smooks.createExecutionContext();
    BeanContext beanContext = execCtx.getBeanContext();
    JavaResult jResult = new JavaResult();
    
    smooks.filterSource(execCtx, new StreamSource(getClass().getResourceAsStream("message.xml")), jResult);
    assertEquals(3, jResult.getResultMap().size());
  }

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                IOException {
            wireObject(executionContext);
        }


        private void wireObject(ExecutionContext executionContext) {
            BeanContext beanContext = executionContext.getBeanContext();
            Map<String, Object> beanMap = beanContext.getBeanMap();
            Object key = keyExtractor.getValue(beanMap);


            @SuppressWarnings("unchecked")
            // TODO: Optimize to use the BeanId object
            Map<Object, Object> map = (Map<Object, Object>) beanContext.getBean(mapBindingKey);
            Object record = beanContext.getBean(RECORD_BEAN);


            map.put(key, record);
        }

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    if(logger.isDebugEnabled()) {
      logger.debug("Inserting bean under BeanId '" + beanIdName + "' with DAO '" + daoName + "'.");
    }


    BeanContext beanRepository = executionContext.getBeanContext();


    Object bean = beanRepository.getBean(beanId);


    final DaoRegister emr = PersistenceUtil.getDAORegister(executionContext);


    Object dao = null;
    try {
      if(daoName == null) {
        dao = emr.getDefaultDao();
      } else {
        dao = emr.getDao(daoName);
      }


      if(dao == null) {
        throw new IllegalStateException("The DAO register returned null while getting the DAO '" + daoName + "'");
      }


      final DaoInvoker daoInvoker = DaoInvokerFactory.getInstance().create(dao, objectStore);


      Object result = name == null ? daoInvoker.insert(bean) : daoInvoker.insert(name, bean) ;


      if(insertedBeanId != null) {
        if(result == null) {
          result = bean;
        }
        beanRepository.addBean(insertedBeanId, result, source);
      } else if(result != null && bean != result) {
        beanRepository.changeBean(beanId, bean, source);
      }
    } finally {
      if(dao != null) {
        emr.returnDao(dao);
      }

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    if(logger.isDebugEnabled()) {
      logger.debug("Updating bean under BeanId '" + beanIdName + "' with DAO '" + daoName + "'.");
    }


    BeanContext beanContext = executionContext.getBeanContext();


    Object bean = beanContext.getBean(beanId);


    final DaoRegister emr = PersistenceUtil.getDAORegister(executionContext);


    Object dao = null;
    try {
      if(daoName == null) {
        dao = emr.getDefaultDao();
      } else {
        dao = emr.getDao(daoName);
      }


      if(dao == null) {
        throw new IllegalStateException("The DAO register returned null while getting the DAO '" + daoName + "'");
      }


      final DaoInvoker daoInvoker = DaoInvokerFactory.getInstance().create(dao, objectStore);


      Object result = name == null ? daoInvoker.update(bean) : daoInvoker.update(name, bean) ;


      if(updatedBeanId != null) {
        if(result == null) {
          result = bean;
        }
        beanContext.addBean(updatedBeanId, result, source);
      } else if(result != null && bean != result) {
        beanContext.changeBean(beanId, bean, source);
      }
    } finally {
      if(dao != null) {
        emr.returnDao(dao);
      }

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            logger.info("attributes.getQName(" + n + ") == " + attributes.getQName(n));
            logger.info("attributes.getType(" + n + ") == " + attributes.getType(n));
            logger.info("attributes.getValue(" + n + ") == " + attributes.getValue(n));
          }


          BeanContext beans = execution.getBeanContext();
          assertNotNull(beans);


          Data data = (Data) beans.getBean("Data");
          assertNotNull(data);


          logger.info("data.getNumber() == " + data.getNumber());
          logger.info("data.getTruncated() == " + data.getTruncated());

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            populateAndSetPropertyValue(dataString, executionContext);
        }
    }


    private void bindBeanValue(final ExecutionContext executionContext) {
      final BeanContext beanContext = executionContext.getBeanContext();


      Object bean = beanContext.getBean(wireBeanId);
        if(bean == null) {


            // Register the observer which looks for the creation of the selected bean via its beanIdName. When this observer is triggered then
            // we look if we got something we can set immediately or that we got an array collection. For an array collection we need the array representation
            // and not the list representation. So we register and observer who looks for the change from the list to the array
          BeanRuntimeInfo wiredBeanRI = getWiredBeanRuntimeInfo();
          beanContext.addObserver(new BeanCreateLifecycleObserver(wireBeanId, this, wiredBeanRI));
        } else {
            populateAndSetPropertyValue(bean, executionContext);
        }
  }

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  public void visitAfter(ExecutionContext executionContext, Fragment source) {
        Classification thisBeanType = beanRuntimeInfo.getClassification();
        boolean isBeanTypeArray = (thisBeanType == Classification.ARRAY_COLLECTION);


        BeanContext beanContext = executionContext.getBeanContext();
        beanContext.setBeanInContext(beanId, false);


        if(isBeanTypeArray) {
            Object bean  = beanContext.getBean(beanId);


            if(logger.isDebugEnabled()) {
                logger.debug("Converting bean [" + beanIdName + "] to an array and rebinding to context.");
            }
            bean = convert(executionContext, bean, source);

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      return bean;
    }


  private void createAndSetBean(ExecutionContext executionContext, Fragment source) {
        Object bean;
        BeanContext beanContext = executionContext.getBeanContext();


        bean = createBeanInstance(executionContext);


        executionContext.getBeanContext().notifyObservers(new BeanContextLifecycleEvent(executionContext,
                source, BeanLifecycle.START_FRAGMENT, beanId, bean));


        if(initValsExpression != null) {
          initValsExpression.exec(bean);
        }


        beanContext.setBeanInContext(beanId, false);
        beanContext.addBean(beanId, bean, source);
        beanContext.setBeanInContext(beanId, true);


        if (logger.isDebugEnabled()) {
            logger.debug("Bean [" + beanIdName + "] instance created.");
        }
    }

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        throw new SmooksConfigurationException("Invalid Smooks bean configuration.  Bean class " + beanRuntimeInfo.getPopulateType().getName() + " doesn't have a public default constructor.");
    }
  }


  public void executeVisitLifecycleCleanup(Fragment fragment, ExecutionContext executionContext) {
        BeanContext beanContext = executionContext.getBeanContext();
        Object bean = beanContext.getBean(beanId);


        beanContext.notifyObservers(new BeanContextLifecycleEvent(executionContext,
                fragment, BeanLifecycle.END_FRAGMENT, beanId, bean));


        if(!retain) {
            beanContext.removeBean(beanId, null);
        }
    }

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