miklosgergely opened a new pull request #859: HIVE-22557 Break up DDLSemanticAnalyzer - extract Table constraints analyzers URL: https://github.com/apache/hive/pull/859 DDLSemanticAnalyzer is a huge class, more than 4000 lines long. The goal is to refactor it in order to have everything cut into more handleable classes under the package org.apache.hadoop.hive.ql.exec.ddl: - have a separate class for each analyzers - have a package for each operation, containing an analyzer, a description, and an operation, so the amount of classes under a package is more manageable Step #10: extract the table constraints related analyzers from DDLSemanticAnalyzer, and move them under the new package. Also modified the framework to be able to handle `alter table ...` statements. Also moved some of the Constraint related utilty functions from BaseSemanticAnalyzer to the ddl.table.constraint package, into a new ConstraintUtils class.
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