Examples of br.com.caelum.vraptor.interceptor.Interceptor

Package br.com.caelum.vraptor.interceptor

Examples of br.com.caelum.vraptor.interceptor.Interceptor

br.com.caelum.vraptor.interceptor.Interceptor
Whenever an interceptor accepts a resource method, its intercept method is invoked to intercept the process of request parsing in order to allow the software to do some specific tasks.
Common usage for interceptors for end-users (end-programmers) are security constraint checks, database session (open session in view) opening and much more. If you have an interceptor A which depends on an interceptor B, i.e, interceptor B must be executed before interceptor A, use {@link InterceptorSequence}. If the {@link Interceptor#accepts(ResourceMethod)} method only depends on received{@link ResourceMethod}, you can annotate the interceptor with @ {@link Lazy}, so the Interceptor will only be instantiated if the accepts returns true. You should not use @Lazy if accepts is constant, or depends on any constructor parameter. @see InterceptorSequence @see Lazy @author Guilherme Silveira

      accepts = getAcceptor().accepts(method);
    } catch (NullPointerException e) {
      throw new InterceptionException("StaticInterceptors should not use constructor parameters inside the accepts method", e);
    }
    if (accepts) {
      Interceptor interceptor = container.instanceFor(type);
      if (interceptor == null) {
        throw new InterceptionException("Unable to instantiate interceptor for " + type.getName()
            + ": the container returned null.");
      }
      logger.debug("Invoking interceptor {}", interceptor.getClass().getSimpleName());
      interceptor.intercept(stack, method, resourceInstance);
    } else {
      stack.next(method, resourceInstance);
    }


  }

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    this.type = type;
  }


  public void execute(InterceptorStack stack, ResourceMethod method, Object resourceInstance)
      throws InterceptionException {
    Interceptor interceptor = Interceptor.class.cast(container.instanceFor(type));
    if (interceptor == null) {
      throw new InterceptionException("Unable to instantiate interceptor for " + type.getName()
          + ": the container returned null.");
    }
    if (interceptor.accepts(method)) {
      logger.debug("Invoking interceptor {}", interceptor.getClass().getSimpleName());
      interceptor.intercept(stack, method, resourceInstance);
    } else {
      stack.next(method, resourceInstance);
    }
  }

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  }


  @Override
  public void execute(InterceptorStack stack, ControllerMethod method, Object controllerInstance)
      throws InterceptionException {
    Interceptor interceptor = (Interceptor) container.instanceFor(type);
    if (interceptor == null) {
      throw new InterceptionException("Unable to instantiate interceptor for " + type.getName()
          + ": the container returned null.");
    }
    if (interceptor.accepts(method)) {
      logger.debug("Invoking interceptor {}", interceptor.getClass().getSimpleName());
      interceptor.intercept(stack, method, controllerInstance);
    } else {
      stack.next(method, controllerInstance);
    }
  }

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  }


  @Override
  public void execute(InterceptorStack stack, ControllerMethod method, Object controllerInstance)
      throws InterceptionException {
    Interceptor interceptor = (Interceptor) container.instanceFor(type);
    if (interceptor == null) {
      throw new InterceptionException("Unable to instantiate interceptor for " + type.getName()
          + ": the container returned null.");
    }
    if (interceptor.accepts(method)) {
      logger.debug("Invoking interceptor {}", interceptor.getClass().getSimpleName());
      interceptor.intercept(stack, method, controllerInstance);
    } else {
      stack.next(method, controllerInstance);
    }
  }

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    this.type = type;
  }


  public void execute(InterceptorStack stack, ControllerMethod method, Object controllerInstance)
      throws InterceptionException {
    Interceptor interceptor = (Interceptor) container.instanceFor(type);
    if (interceptor == null) {
      throw new InterceptionException("Unable to instantiate interceptor for " + type.getName()
          + ": the container returned null.");
    }
    if (interceptor.accepts(method)) {
      logger.debug("Invoking interceptor {}", interceptor.getClass().getSimpleName());
      interceptor.intercept(stack, method, controllerInstance);
    } else {
      stack.next(method, controllerInstance);
    }
  }

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      accepts = getAcceptor().accepts(method);
    } catch (NullPointerException e) {
      throw new InterceptionException("StaticInterceptors should not use constructor parameters inside the accepts method", e);
    }
    if (accepts) {
      Interceptor interceptor = container.instanceFor(type);
      if (interceptor == null) {
        throw new InterceptionException("Unable to instantiate interceptor for " + type.getName()
            + ": the container returned null.");
      }
      logger.debug("Invoking interceptor {}", interceptor.getClass().getSimpleName());
      interceptor.intercept(stack, method, resourceInstance);
    } else {
      stack.next(method, resourceInstance);
    }


  }

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    this.type = type;
  }


  public void execute(InterceptorStack stack, ResourceMethod method, Object resourceInstance)
      throws InterceptionException {
    Interceptor interceptor = container.instanceFor(type);
    if (interceptor == null) {
      throw new InterceptionException("Unable to instantiate interceptor for " + type.getName()
          + ": the container returned null.");
    }
    if (interceptor.accepts(method)) {
      logger.debug("Invoking interceptor {}", interceptor.getClass().getSimpleName());
      interceptor.intercept(stack, method, resourceInstance);
    } else {
      stack.next(method, resourceInstance);
    }
  }

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Related Classes of br.com.caelum.vraptor.interceptor.Interceptor

br.com.caelum.vraptor.core.LazyInterceptorHandler

br.com.caelum.vraptor.core.ToInstantiateInterceptorHandler

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