smiklosovic commented on code in PR #3903:
URL: https://github.com/apache/cassandra/pull/3903#discussion_r1963071257
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src/java/org/apache/cassandra/cql3/constraints/ColumnConstraint.java:
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@@ -46,32 +53,57 @@ public enum ConstraintType
// The order of that enum matters!!
// We are serializing its enum position instead of its name.
// Changing this enum would affect how that int is interpreted when
deserializing.
- COMPOSED(ColumnConstraints.serializer),
- FUNCTION(FunctionColumnConstraint.serializer),
- SCALAR(ScalarColumnConstraint.serializer),
- UNARY_FUNCTION(UnaryFunctionColumnConstraint.serializer);
+ COMPOSED(ColumnConstraints.serializer, new DuplicatesChecker()),
+ FUNCTION(FunctionColumnConstraint.serializer,
FunctionColumnConstraint.Functions.values()),
+ SCALAR(ScalarColumnConstraint.serializer, new
ScalarColumnConstraintSatisfiabilityChecker()),
+ UNARY_FUNCTION(UnaryFunctionColumnConstraint.serializer,
UnaryFunctionColumnConstraint.Functions.values());
private final MetadataSerializer<?> serializer;
+ private final SatisfiabilityChecker[] satisfiabilityCheckers;
+
+ ConstraintType(MetadataSerializer<?> serializer, SatisfiabilityChecker
satisfiabilityChecker)
+ {
+ this(serializer, new SatisfiabilityChecker[]{
satisfiabilityChecker });
+ }
- ConstraintType(MetadataSerializer<?> serializer)
+ ConstraintType(MetadataSerializer<?> serializer,
SatisfiabilityChecker[] satisfiabilityCheckers)
{
this.serializer = serializer;
+ this.satisfiabilityCheckers = satisfiabilityCheckers;
}
public static MetadataSerializer<?> getSerializer(int i)
{
return ConstraintType.values()[i].serializer;
}
+
+ private static SatisfiabilityChecker[] getSatisfiabilityCheckers()
+ {
+ List<SatisfiabilityChecker> result = new ArrayList<>();
+ for (ConstraintType constraintType : ConstraintType.values())
+
result.addAll(Arrays.asList(constraintType.satisfiabilityCheckers));
+
+ return result.toArray(new SatisfiabilityChecker[0]);
+ }
+ }
+
+ public abstract String name();
+
+ public String fullName()
Review Comment:
@bbotella
We need to make a difference between "name of the function" which is just
`LENGTH`, for example, and "full name" which also contains its operator. That
is necessary to realize if there is a duplicate or not.
`a CHECK LENGTH(a) > 0 AND LENGTH(a) > 10`
This means that "full name" will be `LENGTH >` and `LENGTH >`.
That means that we see that we have used same function with same operator
twice - so we fail. This is what `DuplicatesChecker` is doing.
If not done in DuplicatesChecker, we would need to check for duplicities in
every specific satisfaction checker all the time all over again.
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