密钥与ID/名称? [英] Key vs ID/Name?

问题描述

我不想为我的实体创建自动生成的密钥，所以我指定自己的密钥:

I do not want to create an autogenerated key for my entities so I specify my own:

Entity employee = Entity.newBuilder().setKey(makeKey("Employee", "bobby"))
        .addProperty(makeProperty("fname", makeValue("fname").setIndexed(false)))
        .addProperty(makeProperty("lname", makeValue("lname").setIndexed(false)))    
        .build();

CommitRequest request = CommitRequest.newBuilder()
    .setMode(CommitRequest.Mode.NON_TRANSACTIONAL)
    .setMutation(Mutation.newBuilder().addInsert(employee))
    .build();
datastore.commit(request);

当我查看该实体的外观时，它看起来像这样:

When I check to see what the entity looks like it looks like this:

如果我指定了自己的密钥(鲍比)，为什么会生成此自动生成的密钥?似乎还创建了bobby，但是现在我有了bobby和此自动生成的密钥.密钥和ID/名称有什么区别?

Why is this auto-generated key generated if I specified my own key (bobby)? It seems bobby was also created, but now I have bobby and this autogenerated key. What is the difference between the key and id/name?

推荐答案

这是密钥的url安全版本，适用于链接.使用 KeyFactory.stringToKey 转换为实际的密钥，您会看到它包含您的字符串名称.

This is the url-safe version of your key, suitable for use in links. Use KeyFactory.stringToKey to convert it to an actual key, and you'll see that it contains your string name.

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