[jira] [Updated] (SPARK-28836) Remove the canonicalize() method

["Ali Afroozeh (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-28836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ali Afroozeh updated SPARK-28836:
---------------------------------
    Summary: Remove the canonicalize() method   (was: Improve canonicalize API)

> Remove the canonicalize() method 
> ---------------------------------
>
>                 Key: SPARK-28836
>                 URL: https://issues.apache.org/jira/browse/SPARK-28836
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Ali Afroozeh
>            Priority: Minor
>
> The canonicalize(attrs: AttributeSeq) method in PlanExpression is somewhat confusing. 
>  First, it is not clear why `PlanExpression` should have this method, and why the canonicalization is not handled
>  by the canonicalized method of its parent, the Expression class. Second, the QueryPlan.normalizeExpressionId
>  is the only place where PlanExpression.canonicalized is being called.
> This PR removes the canonicalize method from the PlanExpression class and delegates the normalization of expression ids to
>  the QueryPlan.normalizedExpressionId method. Also, the name normalizedExpressions is more suitable for this method,
>  therefore, the method has also been renamed.



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