Examples of org.springframework.beans.factory.parsing.ComponentDefinition

Package org.springframework.beans.factory.parsing

Examples of org.springframework.beans.factory.parsing.ComponentDefinition

org.springframework.beans.factory.parsing.ComponentDefinition
Interface that describes the logical view of a set of {@link BeanDefinition BeanDefinitions}and {@link BeanReference BeanReferences} as presented in some configuration context.
With the introduction of {@link org.springframework.beans.factory.xml.NamespaceHandler pluggable custom XML tags}, it is now possible for a single logical configuration entity, in this case an XML tag, to create multiple {@link BeanDefinition BeanDefinitions} and {@link BeanReference RuntimeBeanReferences}in order to provide more succinct configuration and greater convenience to end users. As such, it can no longer be assumed that each configuration entity (e.g. XML tag) maps to one {@link BeanDefinition}. For tool vendors and other users who wish to present visualization or support for configuring Spring applications it is important that there is some mechanism in place to tie the {@link BeanDefinition BeanDefinitions}in the {@link org.springframework.beans.factory.BeanFactory} back to the configuration data in a waythat has concrete meaning to the end user. As such, {@link org.springframework.beans.factory.xml.NamespaceHandler}implementations are able to publish events in the form of a ComponentDefinition for each logical entity being configured. Third parties can then {@link org.springframework.beans.factory.parsing.ReaderEventListener subscribe to these events}, allowing for a user-centric view of the bean metadata.
Each ComponentDefinition has a {@link #getSource source object} which is configuration-specific.In the case of XML-based configuration this is typically the {@link org.w3c.dom.Node} which contains the usersupplied configuration information. In addition to this, each {@link BeanDefinition} enclosed in aComponentDefinition has its own {@link BeanDefinition#getSource() source object} which may pointto a different, more specific, set of configuration data. Beyond this, individual pieces of bean metadata such as the {@link org.springframework.beans.PropertyValue PropertyValues} may also have a source object giving aneven greater level of detail. Source object extraction is handled through the {@link org.springframework.beans.factory.parsing.SourceExtractor} which can be customized as required.
Whilst direct access to important {@link BeanReference BeanReferences} is provided through{@link #getBeanReferences}, tools may wish to inspect all {@link BeanDefinition BeanDefinitions} to gatherthe full set of {@link BeanReference BeanReferences}. Implementations are required to provide all {@link BeanReference BeanReferences} that are required to validate the configuration of theoverall logical entity as well as those required to provide full user visualisation of the configuration. It is expected that certain {@link BeanReference BeanReferences} will not be important tovalidation or to the user view of the configuration and as such these may be ommitted. A tool may wish to display any additional {@link BeanReference BeanReferences} sourced through the supplied{@link BeanDefinition BeanDefinitions} but this is not considered to be a typical case.
Tools can determine the important of contained {@link BeanDefinition BeanDefinitions} by checking the{@link BeanDefinition#getRole role identifier}. The role is essentially a hint to the tool as to how important the configuration provider believes a {@link BeanDefinition} is to the end user. It is expectedthat tools will not display all {@link BeanDefinition BeanDefinitions} for a givenComponentDefinition choosing instead to filter based on the role. Tools may choose to make this filtering user configurable. Particular notice should be given to the {@link BeanDefinition#ROLE_INFRASTRUCTURE INFRASTRUCTURE role identifier}. {@link BeanDefinition BeanDefinitions}classified with this role are completely unimportant to the end user and are required only for internal implementation reasons. @author Rob Harrop @author Juergen Hoeller @since 2.0 @see AbstractComponentDefinition @see CompositeComponentDefinition @see BeanComponentDefinition @see ReaderEventListener#componentRegistered(ComponentDefinition)

    assertEquals("true", defaults.getMerge());
    assertTrue(defaults.getSource() instanceof Element);
  }


  public void testBeanEventReceived() throws Exception {
    ComponentDefinition componentDefinition1 = this.eventListener.getComponentDefinition("testBean");
    assertTrue(componentDefinition1 instanceof BeanComponentDefinition);
    assertEquals(1, componentDefinition1.getBeanDefinitions().length);
    BeanDefinition beanDefinition1 = componentDefinition1.getBeanDefinitions()[0];
    assertEquals(new TypedStringValue("Rob Harrop"),
        beanDefinition1.getConstructorArgumentValues().getGenericArgumentValue(String.class).getValue());
    assertEquals(1, componentDefinition1.getBeanReferences().length);
    assertEquals("testBean2", componentDefinition1.getBeanReferences()[0].getBeanName());
    assertEquals(1, componentDefinition1.getInnerBeanDefinitions().length);
    BeanDefinition innerBd1 = componentDefinition1.getInnerBeanDefinitions()[0];
    assertEquals(new TypedStringValue("ACME"),
        innerBd1.getConstructorArgumentValues().getGenericArgumentValue(String.class).getValue());
    assertTrue(componentDefinition1.getSource() instanceof Element);


    ComponentDefinition componentDefinition2 = this.eventListener.getComponentDefinition("testBean2");
    assertTrue(componentDefinition2 instanceof BeanComponentDefinition);
    assertEquals(1, componentDefinition1.getBeanDefinitions().length);
    BeanDefinition beanDefinition2 = componentDefinition2.getBeanDefinitions()[0];
    assertEquals(new TypedStringValue("Juergen Hoeller"),
        beanDefinition2.getPropertyValues().getPropertyValue("name").getValue());
    assertEquals(0, componentDefinition2.getBeanReferences().length);
    assertEquals(1, componentDefinition2.getInnerBeanDefinitions().length);
    BeanDefinition innerBd2 = componentDefinition2.getInnerBeanDefinitions()[0];
    assertEquals(new TypedStringValue("Eva Schallmeiner"),
        innerBd2.getPropertyValues().getPropertyValue("name").getValue());
    assertTrue(componentDefinition2.getSource() instanceof Element);
  }

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    Integer max = (Integer) this.beanFactory.getBean("java.lang.Integer.MAX_VALUE");
    assertEquals(Integer.MAX_VALUE, max.intValue());
  }


  public void testEvents() throws Exception {
    ComponentDefinition propertiesComponent = this.listener.getComponentDefinition("myProperties");
    assertNotNull("Event for 'myProperties' not sent", propertiesComponent);
    AbstractBeanDefinition propertiesBean = (AbstractBeanDefinition) propertiesComponent.getBeanDefinitions()[0];
    assertEquals("Incorrect BeanDefinition", PropertiesFactoryBean.class, propertiesBean.getBeanClass());


    ComponentDefinition constantComponent = this.listener.getComponentDefinition("min");
    assertNotNull("Event for 'min' not sent", propertiesComponent);
    AbstractBeanDefinition constantBean = (AbstractBeanDefinition) constantComponent.getBeanDefinitions()[0];
    assertEquals("Incorrect BeanDefinition", FieldRetrievingFactoryBean.class, constantBean.getBeanClass());
  }

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  }


  public void testSourceExtraction() {
    Iterator iterator = context.getRegisteredComponents();
    while (iterator.hasNext()) {
      ComponentDefinition compDef = (ComponentDefinition) iterator.next();
      if (compDef instanceof CompositeComponentDefinition) {
        assertNotNull("CompositeComponentDefinition '" + compDef.getName()+ "' has no source attachment", ((CompositeComponentDefinition) compDef).getSource());
      }
      validateComponentDefinition(compDef);
    }
  }

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    reader.setEventListener(this.eventListener);
    reader.loadBeanDefinitions(new ClassPathResource("txNamespaceHandlerTests.xml", getClass()));
  }


  public void testComponentEventReceived() {
    ComponentDefinition component = this.eventListener.getComponentDefinition("txAdvice");
    assertTrue(component instanceof BeanComponentDefinition);
  }

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    }
    
    public boolean containsComponentDefinition(String name) {
      Iterator iterator = REGISTERED_COMPONENTS.iterator();
      while (iterator.hasNext()) {
        ComponentDefinition cd = (ComponentDefinition) iterator.next();
        if (cd instanceof CompositeComponentDefinition) {
          ComponentDefinition[] innerCds = ((CompositeComponentDefinition) cd)
              .getNestedComponents();
          for (int i = 0; i < innerCds.length; i++) {
            if (innerCds[i].getName().equals(name)) {
              return true;
            }
          }
        }
        else {
          if (cd.getName().equals(name)) {
            return true;
          }
        }
      }
      return false;

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    this.reader.setEventListener(this.eventListener);
    this.reader.loadBeanDefinitions(new ClassPathResource("jeeNamespaceHandlerTests.xml", getClass()));
  }


  public void testJndiLookupComponentEventReceived() {
    ComponentDefinition component = this.eventListener.getComponentDefinition("simple");
    assertTrue(component instanceof BeanComponentDefinition);
  }

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    ComponentDefinition component = this.eventListener.getComponentDefinition("simple");
    assertTrue(component instanceof BeanComponentDefinition);
  }


  public void testLocalSlsbComponentEventReceived() {
    ComponentDefinition component = this.eventListener.getComponentDefinition("simpleLocalEjb");
    assertTrue(component instanceof BeanComponentDefinition);
  }

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    ComponentDefinition component = this.eventListener.getComponentDefinition("simpleLocalEjb");
    assertTrue(component instanceof BeanComponentDefinition);
  }


  public void testRemoteSlsbComponentEventReceived() {
    ComponentDefinition component = this.eventListener.getComponentDefinition("simpleRemoteEjb");
    assertTrue(component instanceof BeanComponentDefinition);
  }

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    ComponentDefinition[] nestedComponentDefs = compositeDef.getNestedComponents();
    assertEquals("Incorrect number of inner components", 2, nestedComponentDefs.length);
    PointcutComponentDefinition pcd = null;
    for (int i = 0; i < nestedComponentDefs.length; i++) {
      ComponentDefinition componentDefinition = nestedComponentDefs[i];
      if (componentDefinition instanceof PointcutComponentDefinition) {
        pcd = (PointcutComponentDefinition) componentDefinition;
        break;
      }
    }

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    ComponentDefinition[] nestedComponentDefs = compositeDef.getNestedComponents();
    assertEquals("Incorrect number of inner components", 3, nestedComponentDefs.length);
    AdvisorComponentDefinition acd = null;
    for (int i = 0; i < nestedComponentDefs.length; i++) {
      ComponentDefinition componentDefinition = nestedComponentDefs[i];
      if (componentDefinition instanceof AdvisorComponentDefinition) {
        acd = (AdvisorComponentDefinition) componentDefinition;
        break;
      }
    }

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