[BUG FIX] Fix the visit of inner query for NestedQueryBuilder

[zhichao-aws]

Description

In #10110 we add visitor design pattern in QueryBuilder. For this pattern, compound query need to manage the visit for the sub-query. It gets the child visitor and use it to visit the sub-query in the visit method.

However, we didn't implement the visit method for NestedQueryBuilder. And as a result some query processors can not work for the NestedQueryBuilder. ref: opensearch-project/neural-search#813

In this PR we implement the visit method in NestedQueryBuilder. The coding style is consistent with previous PR #10110.

Related Issues

#10110
opensearch-project/neural-search#813

Check List

• Functionality includes testing.
• API changes companion pull request created, if applicable.
• Public documentation issue/PR created, if applicable.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[github-actions]

❌ Gradle check result for 1985a21: FAILURE

Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green. Is the failure a flaky test unrelated to your change?

[zhichao-aws]

Please help add a backport label for this PR

[zhichao-aws]

Hi @vibrantvarun @msfroh, could you please take a look at this PR? As you're the author and reviewer of #10110

[github-actions]

✅ Gradle check result for eceb497: SUCCESS

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 1 line in your changes missing coverage. Please review.

Project coverage is 71.87%. Comparing base (1fe58b5) to head (eaf3263).

Files	Patch %	Lines
...org/opensearch/index/query/NestedQueryBuilder.java	75.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main   #14739      +/-   ##
============================================
+ Coverage     71.78%   71.87%   +0.08%     
+ Complexity    62694    62692       -2     
============================================
  Files          5160     5160              
  Lines        294211   294215       +4     
  Branches      42553    42554       +1     
============================================
+ Hits         211212   211457     +245     
+ Misses        65599    65338     -261     
- Partials      17400    17420      +20     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[vibrantvarun]

Add the changelog

[zhichao-aws]

Hi @kotwanikunal , could you please help merge this PR?

[kotwanikunal]

@zhichao-aws Can you please rebase? It looks like you have conflicts.

[zhichao-aws]

@zhichao-aws Can you please rebase? It looks like you have conflicts.

Sure

[github-actions]

✅ Gradle check result for feceae8: SUCCESS

[github-actions]

✅ Gradle check result for eaf3263: SUCCESS

[vibrantvarun]

@zhichao-aws what is the status of this PR?

[dblock]

I had marked this for 2.16 as it's a pretty straightforward bug fix that we should have merged a while ago. If it doesn't make it to 2.16 it's ok.

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/OpenSearch/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.x
# Create a new branch
git switch --create backport/backport-14739-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 fcc231dfc349e092c3f68e49f49e32a062313f71
# Push it to GitHub
git push --set-upstream origin backport/backport-14739-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-14739-to-2.x.

[opensearch-trigger-bot]

The backport to 2.16 failed:

The process '/usr/bin/git' failed with exit code 1

To backport manually, run these commands in your terminal:

# Navigate to the root of your repository
cd $(git rev-parse --show-toplevel)
# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/OpenSearch/backport-2.16 2.16
# Navigate to the new working tree
pushd ../.worktrees/OpenSearch/backport-2.16
# Create a new branch
git switch --create backport/backport-14739-to-2.16
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 fcc231dfc349e092c3f68e49f49e32a062313f71
# Push it to GitHub
git push --set-upstream origin backport/backport-14739-to-2.16
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/OpenSearch/backport-2.16

Then, create a pull request where the base branch is 2.16 and the compare/head branch is backport/backport-14739-to-2.16.

[dblock]

@zhichao-aws can you please backport this manually to 2.x? Thanks.

[zhichao-aws]

Hi @dblock , I created PR to backport 2.x #14967 and backport 2.16 #14968 manually. If the backport 2.16 one is unneccessary feel free to close it. Thanks!