# Which Problems Are Solved
Add the possibility to filter project resources based on project member
roles.
# How the Problems Are Solved
Extend and refactor existing Pl/PgSQL functions to implement the
following:
- Solve O(n) complexity in returned resources IDs by returning a boolean
filter for instance level permissions.
- Individually permitted orgs are returned only if there was no instance
permission
- Individually permitted projects are returned only if there was no
instance permission
- Because of the multiple filter terms, use `INNER JOIN`s instead of
`WHERE` clauses.
# Additional Changes
- system permission function no longer query the organization view and
therefore can be `immutable`, giving big performance benefits for
frequently reused system users. (like our hosted login in Zitadel cloud)
- The permitted org and project functions are now defined as `stable`
because the don't modify on-disk data. This might give a small
performance gain
- The Pl/PgSQL functions are now tested using Go unit tests.
# Additional Context
- Depends on https://github.com/zitadel/zitadel/pull/9677
- Part of https://github.com/zitadel/zitadel/issues/9188
- Closes https://github.com/zitadel/zitadel/issues/9190
# Which Problems Are Solved
Classic permission checks execute for every returned row on resource
based search APIs. Complete background and problem definition can be
found here: https://github.com/zitadel/zitadel/issues/9188
# How the Problems Are Solved
- PermissionClause function now support dynamic query building, so it
supports multiple cases.
- PermissionClause is applied to all list resources which support org
level permissions.
- Wrap permission logic into wrapper functions so we keep the business
logic clean.
# Additional Changes
- Handle org ID optimization in the query package, so it is reusable for
all resources, instead of extracting the filter in the API.
- Cleanup and test system user conversion in the authz package. (context
middleware)
- Fix: `core_integration_db_up` make recipe was missing the postgres
service.
# Additional Context
- Related to https://github.com/zitadel/zitadel/issues/9190
