aokolnychyi commented on code in PR #50561:
URL: https://github.com/apache/spark/pull/50561#discussion_r2040494615
##########
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;
+ }
+
+ public Constraint constraint() {
+ return constraint;
+ }
+
+ public String validatedTableVersion() {
+ return validatedTableVersion;
+ }
+
+ @Override
+ public boolean equals(Object o) {
+ if (this == o) return true;
+ if (o == null || getClass() != o.getClass()) return false;
+ AddConstraint that = (AddConstraint) o;
+ return constraint.equals(that.constraint) &&
+ Objects.equals(validatedTableVersion,
that.validatedTableVersion);
+ }
+
+ @Override
+ public int hashCode() {
+ return Objects.hash(constraint, validatedTableVersion);
+ }
+ }
+
+ /** A TableChange to alter table and drop a constraint. */
+ final class DropConstraint implements TableChange {
+ private final String name;
+ private final boolean ifExists;
+ private final Mode mode;
+
+ /**
+ * Defines modes for dropping a constraint.
+ * <p>
+ * RESTRICT - Prevents dropping a constraint if it is referenced by other
objects.
+ * CASCADE - Automatically drops objects that depend on the constraint.
+ */
+ public enum Mode { RESTRICT, CASCADE }
+
+ private DropConstraint(String name, boolean ifExists, Mode mode) {
+ this.name = name;
+ this.ifExists = ifExists;
+ this.mode = mode;
+ }
+
+ public String name() {
+ return name;
+ }
+
+ public boolean isIfExists() {
Review Comment:
+1
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