配置由Guice Module提供的对象 [英] Configure an object provided by a Guice Module

问题描述

我有一个模块，提供了一个JDBI DBI 实例，如下所示：

I have a Module that provides a JDBI DBI instance like this:

@Provides
@Singleton
DBI dbi(DataSource dataSource) { return new DBI(dataSource); }

<类型）。放入JDBI模块本身是不合适的逻辑，因为它对于使用JDBI的任何应用程序而言并不普遍。我有一个钩子来做这种额外的配置？

In another module I want to call some initialization methods on that DBI instance (configuring support for particular data types). It's not appropriate logic to put in the JDBI module itself as it's application specific not general to any application using JDBI. Is there a hook for me to do that kind of "extra" configuration?

我尝试使用 bindListener 方法但是似乎没有以这种方式提供的对象被调用。

I tried using the bindListener method but it seems like that's not invoked for objects provided in this way.

推荐答案

Guice Injections文档介绍了如何使用@Inject注释方法来调用实例方法。

The Guice Injections documentation describes how to invoke an instance method by annotating the method with @Inject.

没有提到实例可以是Guice模块。因此，您可以这样做：

It doesn't mention that the instance can be a Guice module. As such, you can do this:

class MyConfigurationModule extends AbstractModule {
  @Override
  protected void configure() {
    requestInjection(this);
  }

  @Inject
  void configureDbi(DBI dbi) {
    // Do whatever configuration.
  }  
}

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