aokolnychyi commented on code in PR #50561:
URL: https://github.com/apache/spark/pull/50561#discussion_r2040494831
##########
sql/catalyst/src/main/java/org/apache/spark/sql/connector/catalog/TableChange.java:
##########
@@ -787,4 +803,82 @@ public int hashCode() {
return Arrays.hashCode(clusteringColumns);
}
}
+
+ /** A TableChange to alter table and add a constraint. */
+ final class AddConstraint implements TableChange {
+ private final Constraint constraint;
+ private final String validatedTableVersion;
+
+ private AddConstraint(Constraint constraint, boolean validate) {
+ this.constraint = constraint;
+ this.validatedTableVersion = null;
Review Comment:
It will be set once we implement ALTER TABLE ... ADD CONSTRAINT. It will do
a scan over the table to validate the constraint and will remember which
version was checked.
I guess `validate` should be renamed to `validatedTableVersion`?
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