Missing Documentation on creation of catalog filters

[henrik-indiscale]

Bug Report

Describe the Bug

I tried to find out how catalog filters are defined when querying a connector but could not.

  "filterExpression": {
    "operandLeft": "https://w3id.org/edc/v0.0.1/ns/isFdo",
    "operator": "=",
    "operandRight": "true"
  }

Expected Behavior

I expected documentation here:
https://eclipse-edc.github.io/documentation/for-adopters/dataspaces/

[github-actions]

Thanks for your contribution 🔥 We will take a look asap 🚀

[jimmarino]

This is not a bug, we just have not had time to document it there. PRs welcome!

[henrik-indiscale]

So where can I find documentation about those filters? I am looking for other operators.

[ndr-brt]

So where can I find documentation about those filters? I am looking for other operators.

the documentation does not exist yet, the answer is currently still only in the code

[henrik-indiscale]

The relevant code is here:
https://github.com/eclipse-edc/Connector/blob/main/spi/common/core-spi/src/main/java/org/eclipse/edc/spi/query/CriterionOperatorRegistry.java