Interceptor (Groovy 2.4.5)
Date: 2015-09-17

groovy.lang

## Interface Interceptor

- All Known Subinterfaces:
    PropertyAccessInterceptor
  All Known Implementing Classes:
    BenchmarkInterceptor, TracingInterceptor

      public interface Interceptor

  Implementers of this interface can be registered in the ProxyMetaClass for notifications about method calls for objects managed by the ProxyMetaClass. See groovy/lang/InterceptorTest.groovy for details.
  Author:
    Dierk Koenig

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `afterInvoke(Object object, String methodName, Object[] arguments, Object result)` This code is executed after the method is optionally called.
    `Object` | `beforeInvoke(Object object, String methodName, Object[] arguments)` This code is executed before the method is optionally called.
    `boolean` | `doInvoke()`

- - ### Method Detail

    - #### beforeInvoke

          Object beforeInvoke(Object object,
                            String methodName,
                            Object[] arguments)

      This code is executed before the method is optionally called.
      Parameters:
        `object` - receiver object for the method call
        `methodName` - name of the method to call
        `arguments` - arguments to the method call
      Returns:
        any arbitrary result that replaces the result of the original method call only if doInvoke() returns false and afterInvoke() relays this result.

    - #### afterInvoke

          Object afterInvoke(Object object,
                           String methodName,
                           Object[] arguments,
                           Object result)

      This code is executed after the method is optionally called.
      Parameters:
        `object` - receiver object for the called method
        `methodName` - name of the called method
        `arguments` - arguments to the called method
        `result` - result of the executed method call or result of beforeInvoke if method was not called
      Returns:
        any arbitrary result that can replace the result of the original method call. Typically, the result parameter is returned.

    - #### doInvoke

          boolean doInvoke()

      Returns:
        whether the target method should be invoked at all.