jerqi commented on code in PR #7610:
URL: https://github.com/apache/gravitino/pull/7610#discussion_r2259705950
##########
api/src/main/java/org/apache/gravitino/rel/expressions/NamedReference.java:
##########
@@ -105,4 +116,44 @@ public String toString() {
return String.join(".", fieldName);
}
}
+
+ /** A {@link NamedReference} that references a metadata field. */
+ final class MetadataField implements NamedReference {
+ /** A metadata field that represents the name of a partition in a
partitioned table. */
+ public static final MetadataField PARTITION_NAME_FIELD =
+ new MetadataField(new String[] {"partition_name"});
Review Comment:
Yes, I prefer using some fixed name metadata fields to represent the some
metadata information.
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