composing dataloaders

Hi,

I have a datafetcher where I use 2 dataloaders in sequence: the first to translate from 1 ID to another, the second to fetch data corresponding to the second ID.

loader1.load(id1).thenCompose(id2 -> loader2.load(id2))

This hangs because dispatchAll() is not called again after loader1 completes.
I can work around that by adding that call inside the thenCompose() lambda but then it is called for every id2 which is ugly at the very least.

Is there a better way of doing this?

未指定源文件或测试。首先跟踪顺序 loader 的示例 loader1.load(id1).thenCompose(...) 中 dispatchAll 的生命周期，然后检查嵌套 load 应如何进行 dispatch。完成的标准是顺序 dataloader 能够在不挂起的情况下完成，并且 batching 不需要针对每个 id 调用 dispatch。