Cosmos DB vNext Emulator Does not Support Numerical Partition Keys

[MapFilterMagic]

Describe the bug
If you use a numerical partition key, you will not be able to find the document on a read where you specify the partition key or do a partial document update, which includes the partition key.

Pointed my application at the emulator and started running into problems. It can do a normal save (upsert) just fine. But the find and patch won't work.

Narrowed it down to the fact that our model's partition key is a BigInteger. Tried int and long, but it was still failing to findById (point read) or patch anything, both of which require you to supply the partition key. Then I changed it to a String, and it had no issues. Otherwise, it cannot find the document you are looking for by that partition key.

Confirmed copying over this gentleman's test code into a Spring Boot project (assume it has nothing to do with Spring Boot): https://github.com/bitxon/java-cosmos-emulator-vnext-experiment

To Reproduce

1. I copied over the code from https://github.com/bitxon/java-cosmos-emulator-vnext-experiment/blob/cdc42ee8704b53252afbc6bd8e96d557dcbd1934/src/test/java/bitxon/experiment/CosmosEmulatorVNextHttpTest.java

If you change the partition key to /age

• https://github.com/bitxon/java-cosmos-emulator-vnext-experiment/blob/cdc42ee8704b53252afbc6bd8e96d557dcbd1934/src/test/java/bitxon/experiment/CosmosEmulatorVNextHttpTest.java#L51

And then feed in the age value instead of the name when dumping in a new PartitionKey() in both cases, you run into it

Expected behavior
Might have missed this when looking the unsupported feature list, but it should be able to support numeric partition keys like it does in the cloud.

Desktop:

• OS: m1 macOS 15.3.2
• Version: vNext Emulator latest
• SDK version:
  • Java (jdk21)
  • com.azure.spring:spring-cloud-azure-dependencies:5.21.0
  • org.springframework.boot:spring-boot-starter-parent:3.4.2
  • org.springframework.cloud: spring-cloud-dependencies:2024.0.0
  • com.azure.spring spring-cloud-azure-starter-data-cosmos