Azure cosmos db continuation token not working with WHERE - azure

Question

I have a collection of lubes. A lube can either be available or out-of-stock. I would like to query max of 5 lubes at a time.
When I'm not using a filter, the continuation token is returned and works fine.
// <Get all lubes / first page (max: 5) >
async getAll(token?: string, limit = 5) {
if (!token) this.store.lube.removeAll();
const {
resources: items,
continuationToken,
hasMoreResults,
} = await this.dbContainer.items
.readAll<ILube>({
maxItemCount: limit,
continuationToken: token,
// partitionKey: "HFO",
})
.fetchNext();
this.store.lube.load(items);
return { hasMoreResults, continuationToken };
}
However, when I want to filter by available lubes, or out-of-stock, using WHERE, the continuation token is returned, however, when I retrieved the data, it doesn't work - no error.
// <Get by availability status>
async getByAvailability(availability: boolean, token?: string, limit = 5) {
if (!token) this.store.lube.removeAll();
this.store.lube.removeAll();
const querySpec = {
query: "SELECT * FROM c WHERE c.isAvailable = #availability",
parameters: [
{
name: "#availability",
value: availability,
},
],
};
const {
resources: items,
continuationToken,
hasMoreResults,
} = await this.dbContainer.items
.query<ILube>(querySpec, { maxItemCount: limit })
.fetchNext();
this.store.lube.load(items);
return { hasMoreResults, continuationToken };
}
Bottom line, how can I use continuation token with where?

Answer 1

There's a bug in the code. Continuation token can be used with WHERE.
Mistake 1: I didn't include the continuationToken in the query of getByAvailability
Mistake 2: I removed the items from the store even when the token!=null.
this.store.lube.removeAll();
// <Get by availability status>
async getByAvailability(availability: boolean, token?: string, limit = 5) {
if (!token) this.store.lube.removeAll();
// **Mistake 2**
// this.store.lube.removeAll(); // This line is not needed.
const querySpec = {
query: "SELECT * FROM c WHERE c.isAvailable = #availability",
parameters: [
{
name: "#availability",
value: availability,
},
],
};
**Mistake 1: Query didn't have continuationToken in it, only had the one being returned.**
const {
resources: items,
continuationToken,
hasMoreResults,
} = await this.dbContainer.items
.query<ILube>(querySpec, { maxItemCount: limit, continuationToken: token })
.fetchNext();
this.store.lube.load(items);
return { hasMoreResults, continuationToken };
}