领域字符串大于 [英] Realm String greaterThan

问题描述

有什么方法可以找到所有(或仅下一个)在字典上大于目标的字符串的RealmObject吗?

Is there any way to find all (or just the next) RealmObjects with Strings lexicographically greater than the target?

类似

MyEntry next = realm.where(MyEntry.class)
        .greaterThan("name", current)
        .findAllSorted("name")
        .first();

无效，因为greaterThan未针对String实施.

which did not work, because greaterThan is not implemented for Strings.

推荐答案

作为非数据库替代方法，您可以使用

As a non-db-workaround, you can use

List<MyEntry> l = realm.where(MyEntry.class)
    .findAllSorted("name");
int pos = l.indexOf(entryWithName);
MyEntry next = l.get((pos+1)%l.size());

这将在数据库外部进行搜索.可能效果不佳，可读性不强，但是应该可以.

This does the searching outside of the db. Possibly not as well-performing, and not as readable, but it should work.

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