我正在使用Stream Java客户端版本1.3.2。
我有三个平展的customer Feed：customer:101，customer:102和customer103。
还有一个平展的timeline Feed timeline:201，它跟随上述三个customer Feed。
我向customer:101添加了一项活动。活动的to字段设置为customer:102和customer:103。
活动现在应该在三个customer Feed和timeline Feed中。
未为该活动设置foreignId和time字段。我是否应该期望相同的活动在不同的Feed中有不同的id？
我的印象是，如果我未在活动中设置foreignId和time字段，则不同Feed上的相同活动将具有不同的id s。但到目前为止我的情况似乎并非如此。
以下是我的代码片段：
Feed feedOne = streamClient.newFeed("customer", "101");
FlatActivityServiceImpl<SimpleActivity> feedOneService =
feedOne.newFlatActivityService(SimpleActivity.class);
Feed feedTwo = streamClient.newFeed("customer", "102");
FlatActivityServiceImpl<SimpleActivity> feedTwoService =
feedTwo.newFlatActivityService(SimpleActivity.class);
Feed feedThree = streamClient.newFeed("customer", "103");
FlatActivityServiceImpl<SimpleActivity> feedThreeService =
feedThree.newFlatActivityService(SimpleActivity.class);
Feed timeline = streamClient.newFeed("timeline", "201");
FlatActivityServiceImpl<SimpleActivity> timelineService =
timeline.newFlatActivityService(SimpleActivity.class);
timeline.follow("customer", "101", 0);
timeline.follow("customer", "102", 0);
timeline.follow("customer", "103", 0);
// Create a new activity
SimpleActivity activity = new SimpleActivity();
activity.setActor("customer:101");
activity.setObject("tweet:1");
activity.setVerb("tweet");
activity.setTo(Arrays.asList("customer:102", "customer:103"));
feedOneService.addActivity(activity);
System.out.println("Feed one activities:");
feedOneService.getActivities().getResults().forEach(System.out::println);
System.out.println("Feed two activities:");
feedTwoService.getActivities().getResults().forEach(System.out::println);
System.out.println("Feed Three activities:");
feedThreeService.getActivities().getResults().forEach(System.out::println);
System.out.println("Timeline activities:");
timelineService.getActivities().getResults().forEach(System.out::println);
我得到了以下输出：
13:34:11.835 [main] DEBUG i.g.c.a.repo.StreamRepositoryImpl - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/timeline/201/following/?api_key=
13:34:12.323 [main] DEBUG i.g.c.a.repo.StreamRepositoryImpl - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/timeline/201/following/?api_key=
13:34:12.433 [main] DEBUG i.g.c.a.repo.StreamRepositoryImpl - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/timeline/201/following/?api_key=
13:34:12.573 [main] DEBUG i.g.c.a.r.StreamActivityRepository - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/customer/101/?api_key='
Feed one activities:
13:34:12.817 [main] DEBUG i.g.c.a.r.StreamActivityRepository - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/customer/101/?api_key=w&limit=25'
SimpleActivity{id=f3d610da-81df-11e7-8080-80000cce824c, actor=customer:101, verb=tweet, object=tweet:1, target=null, time=Tue Aug 15 13:34:12 EDT 2017, to=[customer:102, customer:103], origin=null, score=null, duration=null}
Feed two activities:
13:34:12.892 [main] DEBUG i.g.c.a.r.StreamActivityRepository - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/customer/102/?api_key=w&limit=25'
SimpleActivity{id=f3d610da-81df-11e7-8080-80000cce824c, actor=customer:101, verb=tweet, object=tweet:1, target=null, time=Tue Aug 15 13:34:12 EDT 2017, to=[customer:102, customer:103], origin=null, score=null, duration=null}
Feed Three activities:
13:34:12.963 [main] DEBUG i.g.c.a.r.StreamActivityRepository - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/customer/103/?api_key=&limit=25'
SimpleActivity{id=f3d610da-81df-11e7-8080-80000cce824c, actor=customer:101, verb=tweet, object=tweet:1, target=null, time=Tue Aug 15 13:34:12 EDT 2017, to=[customer:102, customer:103], origin=customer:102, score=null, duration=null}
Timeline activities:
13:34:13.012 [main] DEBUG i.g.c.a.r.StreamActivityRepository - Invoking url: 'https://us-east-api.getstream.io/api/v1.0/feed/timeline/201/?api_key=&limit=25'
SimpleActivity{id=f3d610da-81df-11e7-8080-80000cce824c, actor=customer:101, verb=tweet, object=tweet:1, target=null, time=Tue Aug 15 13:34:12 EDT 2017, to=[customer:102, customer:103], origin=customer:103, score=null, duration=null}
这是预期的行为吗？我希望他们都有不同的id s。
答案 0 :(得分：0)
对此呼吁混淆的道歉。因为您正在使用“收件人”字段，所以它会将相同的有效内容写入每个供稿中，因为它们具有相同的time字段，实际上具有相同的活动ID值。如果您已经在单独的调用中编写了活动，那么它应该给出不同的活动ID值。
但是，使用活动ID发布删除仅针对单个Feed，因此请执行以下调用：
feedTwoService.deleteActivity('f3d6...824c');
...应仅从该一个Feed中删除该活动。
如果 使用foreign_id值，并且您在原始Feed上的删除调用中使用了foreign_id，那么它也会删除所有Feed中的活动通过跟随关系等的副本。