Examples of org.springframework.aop.Advisor

org.springframework.aop.Advisor
Base interface holding AOP advice (action to take at a joinpoint) and a filter determining the applicability of the advice (such as a pointcut). This interface is not for use by Spring users, but to allow for commonality in support for different types of advice.
Spring AOP is based around around advice delivered via method interception, compliant with the AOP Alliance interception API. The Advisor interface allows support for different types of advice, such as before and after advice, which need not be implemented using interception. @author Rod Johnson

        if (this.beanFactory == null) {
          throw new IllegalStateException("No BeanFactory available anymore (probably due to serialization) " +
              "- cannot resolve prototype advisor '" + pa.getBeanName() + "'");
        }
        Object bean = this.beanFactory.getBean(pa.getBeanName());
        Advisor refreshedAdvisor = namedBeanToAdvisor(bean);
        freshAdvisors.add(refreshedAdvisor);
      }
      else {
        // Add the shared instance.
        freshAdvisors.add(advisors[i]);

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   * bean factory
   */
  private void addAdvisorOnChainCreation(Object next, String name) {
    // We need to convert to an Advisor if necessary so that our source reference
    // matches what we find from superclass interceptors.
    Advisor advisor = namedBeanToAdvisor(next);
    if (logger.isTraceEnabled()) {
      logger.trace("Adding advisor with name '" + name + "'");
    }      
    addAdvisor((Advisor) advisor);
  }

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  public static boolean makeAdvisorChainAspectJCapableIfNecessary(List advisors) {
    // Don't add advisors to an empty list; may indicate that proxying is just not required
    if (!advisors.isEmpty()) {
      boolean foundAspectJAdvice = false;
      for (Iterator it = advisors.iterator(); it.hasNext() && !foundAspectJAdvice; ) {
        Advisor advisor = (Advisor) it.next();
        // Be careful not to get the Advice without a guard, as
        // this might eagerly instantiate a non-singleton AspectJ aspect
        if (isAspectJAdvice(advisor)) {
          foundAspectJAdvice = true;
        }

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    List interceptorList = new ArrayList(config.getAdvisors().length);
    boolean hasIntroductions = hasMatchingIntroductions(config, targetClass);
    AdvisorAdapterRegistry registry = GlobalAdvisorAdapterRegistry.getInstance();
    Advisor[] advisors = config.getAdvisors();
    for (int i = 0; i < advisors.length; i++) {
      Advisor advisor = advisors[i];
      if (advisor instanceof PointcutAdvisor) {
        // Add it conditionally.
        PointcutAdvisor pointcutAdvisor = (PointcutAdvisor) advisor;
        if (config.isPreFiltered() || pointcutAdvisor.getPointcut().getClassFilter().matches(targetClass)) {
          MethodInterceptor[] interceptors = registry.getInterceptors(advisor);

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  /**
   * Determine whether the Advisors contain matching introductions.
   */
  private static boolean hasMatchingIntroductions(Advised config, Class targetClass) {
    for (int i = 0; i < config.getAdvisors().length; i++) {
      Advisor advisor = config.getAdvisors()[i];
      if (advisor instanceof IntroductionAdvisor) {
        IntroductionAdvisor ia = (IntroductionAdvisor) advisor;
        if (ia.getClassFilter().matches(targetClass)) {
          return true;
        }

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      Advisor[] thatAdvisors = otherAdvised.getAdvisors();
      if (thisAdvisors.length != thatAdvisors.length) {
        return false;
      }
      for (int i = 0; i < thisAdvisors.length; i++) {
        Advisor thisAdvisor = thisAdvisors[i];
        Advisor thatAdvisor = thatAdvisors[i];
        if (!equalsAdviceClasses(thisAdvisor, thatAdvisor)) {
          return false;
        }
        if (!equalsPointcuts(thisAdvisor, thatAdvisor)) {
          return false;

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    final List<Advisor> advisors = new LinkedList<Advisor>();
    ReflectionUtils.doWithMethods(aspectClass, new ReflectionUtils.MethodCallback() {
      public void doWith(Method method) throws IllegalArgumentException {
        // Exclude pointcuts
        if (AnnotationUtils.getAnnotation(method, Pointcut.class) == null) {
          Advisor advisor = getAdvisor(method, lazySingletonAspectInstanceFactory, advisors.size(), aspectName);
          if (advisor != null) {
            advisors.add(advisor);
          }
        }
      }
    });


    // If it's a per target aspect, emit the dummy instantiating aspect.
    if (!advisors.isEmpty() && lazySingletonAspectInstanceFactory.getAspectMetadata().isLazilyInstantiated()) {
      Advisor instantiationAdvisor = new SyntheticInstantiationAdvisor(lazySingletonAspectInstanceFactory);
      advisors.add(0, instantiationAdvisor);
    }


    // Find introduction fields.
    for (Field field : aspectClass.getDeclaredFields()) {
      Advisor advisor = getDeclareParentsAdvisor(field);
      if (advisor != null) {
        advisors.add(advisor);
      }
    }

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    if (candidateAdvisors.isEmpty()) {
      return candidateAdvisors;
    }
    List eligibleAdvisors = new LinkedList();
    for (Iterator it = candidateAdvisors.iterator(); it.hasNext();) {
      Advisor candidate = (Advisor) it.next();
      if (candidate instanceof IntroductionAdvisor && canApply(candidate, clazz)) {
        eligibleAdvisors.add(candidate);
      }
    }
    boolean hasIntroductions = !eligibleAdvisors.isEmpty();
    for (Iterator it = candidateAdvisors.iterator(); it.hasNext();) {
      Advisor candidate = (Advisor) it.next();
      if (candidate instanceof IntroductionAdvisor) {
        // already processed
        continue;
      }
      if (canApply(candidate, clazz, hasIntroductions)) {

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      Advisor[] thatAdvisors = otherAdvised.getAdvisors();
      if (thisAdvisors.length != thatAdvisors.length) {
        return false;
      }
      for (int i = 0; i < thisAdvisors.length; i++) {
        Advisor thisAdvisor = thisAdvisors[i];
        Advisor thatAdvisor = thatAdvisors[i];
        if (!equalsAdviceClasses(thisAdvisor, thatAdvisor)) {
          return false;
        }
        if (!equalsPointcuts(thisAdvisor, thatAdvisor)) {
          return false;

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    final MetadataAwareAspectInstanceFactory lazySingletonAspectInstanceFactory =
        new LazySingletonAspectInstanceFactoryDecorator(maaif);


    final List<Advisor> advisors = new LinkedList<Advisor>();
    for (Method method : getAdvisorMethods(aspectClass)) {
      Advisor advisor = getAdvisor(method, lazySingletonAspectInstanceFactory, advisors.size(), aspectName);
      if (advisor != null) {
        advisors.add(advisor);
      }
    }


    // If it's a per target aspect, emit the dummy instantiating aspect.
    if (!advisors.isEmpty() && lazySingletonAspectInstanceFactory.getAspectMetadata().isLazilyInstantiated()) {
      Advisor instantiationAdvisor = new SyntheticInstantiationAdvisor(lazySingletonAspectInstanceFactory);
      advisors.add(0, instantiationAdvisor);
    }


    // Find introduction fields.
    for (Field field : aspectClass.getDeclaredFields()) {
      Advisor advisor = getDeclareParentsAdvisor(field);
      if (advisor != null) {
        advisors.add(advisor);
      }
    }

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