Error when try to use newest strutures (List, Set, Map, Queue)

Java SDK
1

When I try to use a special structure I had some issues:

When the key does not exist and I use append list:

bucket.listAppend("mykey", object);

Then it returns an exception

com.couchbase.client.java.error.DocumentDoesNotExistException: Document not found for subdoc API: mykey

When I created the key before:

bucket.insert(JsonDocument.create("mykey"));

And then do the append on the list

bucket.listAppend("mykey", object);

It returns a NPE:

cause: rx.exceptions.OnErrorThrowable$OnNextValue: OnError while emitting onNext value: java.util.ArrayList.class

This same error happened also on Set, Map and Queue. Also when I try to use just either String or a complex object.

My version:

  <dependency>
            <groupId>com.couchbase.client</groupId>
            <artifactId>java-client</artifactId>
            <version>2.4.1</version>
        </dependency>

My server version:
Version: 4.5.1-2844 Enterprise Edition (build-2844)

2

Hi @otaviopolianasantana,

The underlying document is different for each data structure, list uses JsonArrayDocument. It is more straightforward to create the document using datastructures api
ctx.bucket().listAppend(“mykey”, “”, MutationOptionBuilder.builder().createDocument(true));

I couldn’t reproduce the exact error, you are seeing but,

bucket.insert(JsonDocument.create(“mykey”));
bucket.listAppend(“mykey”, “foo”);

throws DocumentNotJsonException which is valid because the first line creates a document which is null.

bucket.insert(JsonDocument.create("mykey", JsonObject.create())); bucket.listAppend("mykey", "foo"); will throw SUBDOC_PATH_MISMATCH as it tries append to {} instead of an array bucket.insert(JsonArrayDocument.create("mykey", JsonArray.create()); bucket.listAppend("mykey", "foo"); This should work
3

Thanks, that works on List.
Do you know where on documentation has this information?
Or can you give the document type to the others structures (Set, Map, Queue)?

Thanks

4

That information is not exposed on the bucket-level datastructure operations, collections api would expose those http://docs.couchbase.com/sdk-api/couchbase-java-client-2.4.1/com/couchbase/client/java/datastructures/collections/CouchbaseArrayList.html.

Using MutationOptionBuilder createDocument takes care of it when using bucket operations.

bucket.listAppend(“mykey”, “”, MutationOptionBuilder.builder().createDocument(true))

http://docs.couchbase.com/sdk-api/couchbase-java-client-2.4.1/com/couchbase/client/java/datastructures/MutationOptionBuilder.html

5

Thanks that’s working :slight_smile:

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