Spring Facebook模板将fetchObject映射到PagedList [英] Spring Facebook Template map fetchObject to PagedList

问题描述

我正在使用以下方法返回Facebook用户的音乐偏好:

I'm using the following approach to return a Facebook user's music preferences:

//FIXME: Fetch results in a single operation
val likes = facebook.likeOperations().music
val artists = ArrayList<Artist>()
for (musicLiked in likes)
{
    val musicProfile = facebook.fetchObject(musicLiked.id, Page::class.java, "id", "name", "genre");
    artists.add(Artist(name = musicProfile.name, genre = musicProfile.genre))
}

以上方法无法扩展，因为我们为用户喜欢的每个艺术家提供了额外的网络操作.

The above approach won't scale, since we have an additional network operation for each artist the user likes.

我尝试过:

我尝试使用facebook.likeOperations.music，但这不能获取类型.

I tried using facebook.likeOperations.music however this doesn't fetch genre.

问题:

我想在返回PagedList的查询中使用facebook.fetchObject.这该怎么做?

I would like to use facebook.fetchObject with a query that returns a PagedList. How to do this?

(如果您更喜欢或更熟悉Java，则无需在Kotlin中发布示例代码-我将对使用任何语言的信息感到满意).

推荐答案

由于@burovmarley的回答中给出的建议，我检查了源代码并提出了:

Thanks to advice given in @burovmarley's answer, I inspected the source and came up with:

val music = facebook.fetchConnections(userPage.id, "music", Page::class.java,
            PagingParameters(25, 0, null, null).toMap(), "id,name,,genre")
for (musicLiked in music)
{
    println("likes: ${musicLiked.name}, genre: ${musicLiked.genre}")
}

这允许将Spring Social Facebook用作未修改的依赖项，而无需发出请求，这在当前队列中的处理中似乎相当慢.

This allows using Spring Social Facebook as an unmodified dependency, and without issuing a pull request, which seem to be fairly slow in processing through the queue at the present time.

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