How can i search data in my collection?

[z0890142]

Hello! I insert{id:"user1",password;"1234"} in my collection "user" before now i want to find this data with

Query query = mMeteor.getDatabase().getCollection("user").whereEqual( id, user1 );

but it return null.... So here is my question, did I used the wrong function? and how can i find this data?

By the way, Collection collection=database.getCollection("user"); return null too ... Why this happened?

[ocram]

Thanks for your report!

Can you please use a ResultListener to check whether your insert is successful?

mMeteor.insert("my-collection", myValues, new ResultListener() {});

Further, please check which collections actually exist in your database:

System.out.println(mMeteor.getDatabase().toString());

Apart from that, in the code that you posted, you probably meant this (unless id and user1 were indeed declared variables), right?

Query query = mMeteor.getDatabase().getCollection("user").whereEqual("id", "user1");

Since getCollection("user") did already return null for you, we don't even have to check the first method call (for a specific document), since there cannot be any document if the collection does not exist at all.

Hope that helps!

[ocram]

Also make sure you've really passed an instance of InMemoryDatabase to the Meteor constructor as shown in the README.

Try printing full collections, as you did with mMeteor.getDatabase().getCollection("user"), to check whether there is any data at all. If there's no data in that collection, it makes no sense to test the queries.