英文:
Google App Engine - ByteString query fails
问题
我正在开发一个Go应用程序，其中有一个实体(Entity)，它具有一个属性(Property)，用于保存一个标识令牌，该令牌是一串随机的字节。我将这个属性存储为ByteString，在我的开发环境中，我可以使用以下形式的过滤器查询该属性：
// token是[]byte类型
idTok := datastore.ByteString(token)
q := ds.NewQuery("Entity").Filter("IDToken =", idTok)
var entities []Entity
keys, err := q.GetAll(c, &entities)
但不幸的是，当部署为GAE模块时，这个查询返回错误：datastore: bad query filter value type: unsupported datastore value type: datastore.ByteString，这让我感到困惑，因为我认为ByteString类型的目的是能够在500字节以下的二进制数据上建立索引。
我首先根据这个stackoverflow问题的第二个答案切换到使用ByteString类型：https://stackoverflow.com/questions/25829202/golang-appengine-datastore-filter-query-with-byte-comparison
英文:
I am working on a Go application in which I have an Entity with a Property that holds an identifying token which is a random string of bytes. I am storing this property as a ByteString, and in my development environment I have been able to query for this property using a filter of the form:
// token is a []byte
idTok := datastore.ByteString(token)
q := ds.NewQuery("Entity").Filter("IDToken =", idTok)
var entities []Entity
keys, err := q.GetAll(c, &entities)
But unfortunately, when deployed as a module to GAE, this query returns the error: datastore: bad query filter value type: unsupported datastore value type: datastore.ByteString, which is confusing since I thought the purpose of the ByteString type is to be able to index shorter amounts of binary data under 500 bytes.
I first switched over to using the ByteString type based on the second answer to this SO question: https://stackoverflow.com/questions/25829202/golang-appengine-datastore-filter-query-with-byte-comparison
答案1
得分: 0
这个问题大约一周后自行解决了。由于它只出现在模块环境中，我猜测他们的某段代码可能没有更新以支持ByteString类型，现在已经更新了。现在运行得很好！
英文:
This issue resolved itself about a week later. Since it only appeared in the module environment, I am guessing that some piece of their code had not been updated to support the ByteString type, and now is. Works great now!
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