FirebaseFirestore异常:未实现:不支持的字段筛选器值类型:9

Question

当我尝试查询数据时，我从Firebase收到这个奇怪的异常。此错误偶尔会发生。有时它工作得很好，但有时task.isSuccessful返回 false。 attrs是一个字符串数组字段，在Firestore中有2个项目。这是因为在字符串数组上使用whereEqualTo而发生的吗？还是我错过了别的东西？

我使用此链接作为指南。我真的很想知道为什么我会收到此错误。谢谢。

法典：

val queryOrderedAttributeList = attributeList
                .sortedBy { cardAttribute -> cardAttribute.name }
                .map { it.name.toLowerCase() }
        val db = FirebaseFirestore.getInstance()
        val collectionRef = db.collection("dbAllCards")
        val query = collectionRef.whereEqualTo("attrs", queryOrderedAttributeList)
query.get().addOnCompleteListener { task ->
            if (task.isSuccessful) {
                task.result.forEach { document: DocumentSnapshot? ->
                    document?.id?.let { cardList.add(it) }
                    Log.e("firebase", "${document?.id} -> ${document?.data}")
                }
            } else {
                Log.d("firebase", "Error getting documents: ", task.exception)
            }
            loadCardPathList(cardList)
        }

获取文档时出错：

com.google.firebase.firestore.FirebaseFirestoreException: UNIMPLEMENTED: Unsupported FieldFilter value type: 9
              at com.google.android.gms.internal.zzevs.zzf(Unknown Source)
              at com.google.android.gms.internal.zzenb.zza(Unknown Source)
              at com.google.android.gms.internal.zzeoa.zza(Unknown Source)
              at com.google.android.gms.internal.zzenf.zza(Unknown Source)
              at com.google.android.gms.internal.zzett.zza(Unknown Source)
              at com.google.android.gms.internal.zzett.zza(Unknown Source)
              at com.google.android.gms.internal.zzetu.zzb(Unknown Source)
              at com.google.android.gms.internal.zzeup.zzcg(Unknown Source)
              at com.google.android.gms.internal.zzeth.zzcg(Unknown Source)
              at com.google.android.gms.internal.zzevi.zzch(Unknown Source)
              at com.google.android.gms.internal.zzfmg.zzch(Unknown Source)
              at io.grpc.internal.zzac.zzdep(Unknown Source)
              at io.grpc.internal.zzaq.run(Unknown Source)
              at io.grpc.internal.zzeo.run(Unknown Source)
              at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)
              at java.util.concurrent.FutureTask.run(FutureTask.java:237)
              at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:272)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
              at com.google.android.gms.internal.zzeuu$zza.run(Unknown Source)
              at java.lang.Thread.run(Thread.java:761)
            Caused by: com.google.adroid.gms.internal.zzfk: UNIMPLEMENTED: nsupported ieldFilter value ype: 9
              at com.google.android.gms.internal.zzfof.zzddl(Unknown Source)
              at com.google.android.gms.internal.zzevs.zzf(Unknown Source) 
              at com.google.android.gms.internal.zzenb.zza(Unknown Source) 
              at com.google.android.gms.internal.zzeoa.zza(Unknown Source) 
              at com.google.android.gms.internal.zzenf.zza(Unknown Source) 
              at com.google.android.gms.internal.zzett.zza(Unknown Source) 
              at com.google.android.gms.internal.zzett.zza(Unknown Source) 
              at com.google.android.gms.internal.zzetu.zzb(Unknown Source) 
              at com.google.android.gms.internal.zzeup.zzcg(Unknown Source) 
              at com.google.android.gms.internal.zzeth.zzcg(Unknown Source) 
              at com.google.android.gms.internal.zzevi.zzch(Unknown Source) 
              at com.google.android.gms.internal.zzfmg.zzch(Unknown Source) 
              at io.grpc.internal.zzac.zzdep(Unknown Source) 
              at io.grpc.internal.zzaq.run(Unknown Source) 
              at io.grpc.internal.zzeo.run(Unknown Source) 
              at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428) 
              at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
              at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:272) 
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) 
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) 
              at com.google.android.gms.internal.zzeuu$zza.run(Unknown Source) 
              at java.lang.Thread.run(Thread.java:761) 

Answer 1

更新：自从我最初的回答以来，Cloud Firestore 增加了对这些类型查询的支持。 您应该不会再看到此错误消息。

您现在可以查询数组，也可以对单个数组元素执行array-contains查询。

<小时 />

[Firebaser here] 您已经正确诊断了这一点，您看到的错误消息是因为您正在对数组值执行whereEqualTo查询。 如果将 Map<> 值传递给同一子句，则会收到类似的错误消息。

我们要做的第一件事是改进此错误消息，然后可能在将来添加对这些查询的支持。