Examples of org.springframework.util.MethodInvoker

org.springframework.util.MethodInvoker
Helper class that allows for specifying a method to invoke in a declarative fashion, be it static or non-static.
Usage: Specify "targetClass"/"targetMethod" or "targetObject"/"targetMethod", optionally specify arguments, prepare the invoker. Afterwards, you may invoke the method any number of times, obtaining the invocation result.
Typically not used directly but via its subclasses {@link org.springframework.beans.factory.config.MethodInvokingFactoryBean} and{@link org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean}. @author Colin Sampaleanu @author Juergen Hoeller @since 19.02.2004 @see #prepare @see #invoke

  public static <T> T invokeMethod(Object target, String name, Object... args) {
    Assert.notNull(target, "Target object must not be null");
    Assert.hasText(name, "Method name must not be empty");


    try {
      MethodInvoker methodInvoker = new MethodInvoker();
      methodInvoker.setTargetObject(target);
      methodInvoker.setTargetMethod(name);
      methodInvoker.setArguments(args);
      methodInvoker.prepare();


      if (logger.isDebugEnabled()) {
        logger.debug("Invoking method [" + name + "] on target [" + target + "] with arguments ["
            + ObjectUtils.nullSafeToString(args) + "]");
      }


      return (T) methodInvoker.invoke();
    }
    catch (Exception e) {
      ReflectionUtils.handleReflectionException(e);
    }

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   * @see #getListenerMethodName
   * @see #buildListenerArguments
   */
  protected Object invokeListenerMethod(String methodName, Object[] arguments) throws JMSException {
    try {
      MethodInvoker methodInvoker = new MethodInvoker();
      methodInvoker.setTargetObject(getDelegate());
      methodInvoker.setTargetMethod(methodName);
      methodInvoker.setArguments(arguments);
      methodInvoker.prepare();
      return methodInvoker.invoke();
    }
    catch (InvocationTargetException ex) {
      Throwable targetEx = ex.getTargetException();
      if (targetEx instanceof JMSException) {
        throw (JMSException) targetEx;

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   * @see #getListenerMethodName
   * @see #buildListenerArguments
   */
  protected Object invokeListenerMethod(String methodName, Object[] arguments) throws JMSException {
    try {
      MethodInvoker methodInvoker = new MethodInvoker();
      methodInvoker.setTargetObject(getDelegate());
      methodInvoker.setTargetMethod(methodName);
      methodInvoker.setArguments(arguments);
      methodInvoker.prepare();
      return methodInvoker.invoke();
    }
    catch (InvocationTargetException ex) {
      Throwable targetEx = ex.getTargetException();
      if (targetEx instanceof JMSException) {
        throw (JMSException) targetEx;

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  protected void doWrite(List<? extends T> items) throws Exception {
    if (logger.isDebugEnabled()) {
      logger.debug("Writing to the repository with " + items.size() + " items.");
    }


    MethodInvoker invoker = createMethodInvoker(repository, methodName);


    for (T object : items) {
      invoker.setArguments(new Object [] {object});
      doInvoke(invoker);
    }
  }

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      throw new DynamicMethodInvocationException(e);
    }
  }


  private MethodInvoker createMethodInvoker(Object targetObject, String targetMethod) {
    MethodInvoker invoker = new MethodInvoker();
    invoker.setTargetObject(targetObject);
    invoker.setTargetMethod(targetMethod);
    return invoker;
  }

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   */
  @SuppressWarnings("unchecked")
  protected List<T> doPageRead() throws Exception {
    Pageable pageRequest = new PageRequest(page, pageSize, sort);


    MethodInvoker invoker = createMethodInvoker(repository, methodName);


    List<Object> parameters = new ArrayList<Object>();


    if(arguments != null && arguments.size() > 0) {
      parameters.addAll(arguments);
    }


    parameters.add(pageRequest);


    invoker.setArguments(parameters.toArray());


    Page<T> curPage = (Page<T>) doInvoke(invoker);


    return curPage.getContent();
  }

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      throw new DynamicMethodInvocationException(e);
    }
  }


  private MethodInvoker createMethodInvoker(Object targetObject, String targetMethod) {
    MethodInvoker invoker = new MethodInvoker();
    invoker.setTargetObject(targetObject);
    invoker.setTargetMethod(targetMethod);
    return invoker;
  }

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  /**
   * Added due to JDK 7 compatibility.
   */
  public Logger getParentLogger() throws SQLFeatureNotSupportedException{
    MethodInvoker invoker = new MethodInvoker();
    invoker.setTargetObject(dataSource);
    invoker.setTargetMethod("getParentLogger");


    try {
      invoker.prepare();
      return (Logger) invoker.invoke();
    } catch (ClassNotFoundException cnfe) {
      throw new SQLFeatureNotSupportedException(cnfe);
    } catch (NoSuchMethodException nsme) {
      throw new SQLFeatureNotSupportedException(nsme);
    } catch (IllegalAccessException iae) {

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   * @return object returned by invoked method
   * @throws DynamicMethodInvocationException if the {@link MethodInvoker}
   * used throws exception
   */
  protected T invokeDelegateMethod() throws Exception {
    MethodInvoker invoker = createMethodInvoker(targetObject, targetMethod);
    invoker.setArguments(arguments);
    return doInvoke(invoker);
  }

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   * @return object returned by target method
   * @throws DynamicMethodInvocationException if the {@link MethodInvoker}
   * used throws exception
   */
  protected T invokeDelegateMethodWithArgument(Object object) throws Exception {
    MethodInvoker invoker = createMethodInvoker(targetObject, targetMethod);
    invoker.setArguments(new Object[] { object });
    return doInvoke(invoker);
  }

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