### What problem does this PR solve?
When using the 'metadata_condition' for metadata filtering, if no
documents match the filtering criteria, the system will return the
search results of all documents instead of returning an empty result.
When the metadata_condition has conditions but no matching documents,
simply return an empty result.
#11572
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
Co-authored-by: Chenguang Wang <chenguangwang@deepglint.com>
### What problem does this PR solve?
_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
To solve the problem of error reporting caused by type errors when
various types of exception returns are triggered
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix: coroutine object has no attribute get
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
One loop to get better performance
### Type of change
- [x] Refactoring
Signed-off-by: Jin Hai <haijin.chn@gmail.com>
### What problem does this PR solve?
No results can be found through the API /api/v1/dify/retrieval. #11307
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
issue:
[#11319](https://github.com/infiniflow/ragflow/issues/11319)
change:
limit random sampling range in check_embedding
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
change:
update check_embedding failed info
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Fix: create dataset return type inconsistent #11167
### Type of change
- [x] Bug Fix (non-breaking change which fixes an issue)
### What problem does this PR solve?
Feat: extract message output to file
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
pr:
#10854
change:
update check_embedding api
### Type of change
- [x] New Feature (non-breaking change which adds functionality)
### What problem does this PR solve?
Fix some IDE warnings
### Type of change
- [x] Refactoring
---------
Signed-off-by: Jin Hai <haijin.chn@gmail.com>
