seawinde opened a new pull request, #67241:
URL: https://github.com/apache/doris/pull/67241
### What problem does this PR solve?
Issue Number: N/A
Related PR: N/A
Problem Summary:
The transparent materialized view rewrite flow spans pre-RBO plan capture,
graph compatibility, predicate compensation, expression rewriting,
rule-specific plan reconstruction, and partition UNION compensation. The core
code did not provide an end-to-end guide connecting these stages, which made
the rewrite invariants difficult to review and maintain.
This PR adds comments only. It documents the pre-rewrite trigger mask and
adds staged flow descriptions around the shared materialized view rewrite
template and its core helper methods.
| File | Change Description |
|------|-------------------|
| `PreMaterializedViewRewriter.java` | Document the pre-rewrite lifecycle,
`NEED_PRE_REWRITE_RULE_TYPES`, and the isolated CBO selection flow. |
| `AbstractMaterializedViewRule.java` | Add the end-to-end rewrite diagram,
numbered core stages, and method contracts for predicate and expression
rewriting. |
| `StructInfo.java` | Explain the semantic hypergraph compatibility result
produced by `isGraphLogicalEquals`. |
| `PartitionCompensator.java` | Explain eligibility and safety constraints
for partition UNION compensation. |
No plan behavior, API, or runtime logic is changed.
### Release note
None
### Check List (For Author)
- Test
- [ ] Regression test
- [ ] Unit Test
- [x] Manual test (add detailed scripts or steps below)
- `mvn -pl fe-core -am -DskipTests -Dskip.doc=true validate`
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason
- Behavior changed:
- [x] No.
- [ ] Yes.
- Does this need documentation?
- [x] No.
- [ ] Yes.
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label
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