Change in asterixdb[master]: [ASTERIXDB-3606][COMP]: Refactor plan representation: split PlanNode,...

[AsterixDB Code Review <do...@asterix-gerrit.ics.uci.edu>]

From <pr...@apache.org>:

Attention is currently required from: preetham02@apache.org.
Hello Jenkins, Anon. E. Moose #1000171, 

I'd like you to reexamine a change. Please visit

    https://asterix-gerrit.ics.uci.edu/c/asterixdb/+/19604

to look at the new patch set (#22).

Change subject: [ASTERIXDB-3606][COMP]: Refactor plan representation: split PlanNode, use DatasetRegistry, replace index-based tracking
......................................................................

[ASTERIXDB-3606][COMP]: Refactor plan representation: split PlanNode, use DatasetRegistry, replace index-based tracking

 - user model changes: no
 - storage format changes: no
 - interface changes: no

Details:
- Replaces some integer array index variables with Java object references to enhance readability and reduce indexing errors.
- Introduces an abstract PlanNode class with concrete subclasses ScanPlanNode and JoinPlanNode, instead of using a single generic PlanNode for all node types.
- Implements a centralized DatasetRegistry to manage datasets, eliminating the need to track subsets using integers in various locations.
- Standardizes all LeafInput instances as RealLeafInput, removing the need to separately track LogicalOperators as leaf inputs.
Ext-ref: MB-66641

Change-Id: I5c5a670fb66b5d525af31a3e8eca1e0c429e7adc
---
D asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/PlanNode.java
M asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/Stats.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/DummyPlanNode.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/JoinPlanNode.java
M asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/JoinCondition.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/RealLeafInput.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/ScanPlanNode.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/AbstractPlanNode.java
M asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/JoinEnum.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/PlanRegistry.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/UnnestLeafInput.java
M asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/JoinNode.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/AbstractLeafInput.java
A asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/DatasetRegistry.java
M asterixdb/asterix-algebra/src/main/java/org/apache/asterix/optimizer/rules/cbo/EnumerateJoinsRule.java
15 files changed, 1,120 insertions(+), 771 deletions(-)


  git pull ssh://asterix-gerrit.ics.uci.edu:29418/asterixdb refs/changes/04/19604/22
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Gerrit-Project: asterixdb
Gerrit-Branch: master
Gerrit-Change-Id: I5c5a670fb66b5d525af31a3e8eca1e0c429e7adc
Gerrit-Change-Number: 19604
Gerrit-PatchSet: 22
Gerrit-Owner: preetham02@apache.org
Gerrit-Reviewer: Anon. E. Moose #1000171
Gerrit-Reviewer: Jenkins <je...@fulliautomatix.ics.uci.edu>
Gerrit-Attention: preetham02@apache.org
Gerrit-MessageType: newpatchset