karuppayya commented on code in PR #5409:
URL: https://github.com/apache/iceberg/pull/5409#discussion_r937117627
##########
api/src/main/java/org/apache/iceberg/types/TypeUtil.java:
##########
@@ -288,13 +288,41 @@ public static Schema reassignIds(Schema schema, Schema
idSourceSchema) {
return new Schema(struct.fields(), refreshIdentifierFields(struct,
schema));
}
+ /**
+ * Reassigns ids in a schema from another schema.
+ *
+ * <p>Ids are determined by field names. If a field in the schema cannot be
found in the source
+ * schema, this will throw IllegalArgumentException.
+ *
+ * <p>This will not alter a schema's structure, nullability, or types.
+ *
+ * @param schema the schema to have ids reassigned
+ * @param idSourceSchema the schema from which field ids will be used
+ * @return an structurally identical schema with field ids matching the
source schema
+ * @throws IllegalArgumentException if a field cannot be found (by name) in
the source schema
+ */
+ public static Schema reassignIds(Schema schema, Schema idSourceSchema,
boolean caseSensitive) {
Review Comment:
done
##########
core/src/main/java/org/apache/iceberg/schema/UnionByNameVisitor.java:
##########
@@ -57,6 +63,25 @@ public static void visit(UpdateSchema api, Schema
existingSchema, Schema newSche
new PartnerIdByNameAccessors(existingSchema));
}
+ /**
+ * Adds changes needed to produce a union of two schemas to an {@link
UpdateSchema} operation.
+ *
+ * <p>Changes are accumulated to evolve the existingSchema into a union with
newSchema.
+ *
+ * @param api an UpdateSchema for adding changes
+ * @param existingSchema an existing schema
+ * @param caseSensitive when false, the case of schema's fields are ignored
+ * @param newSchema a new schema to compare with the existing
+ */
+ public static void visit(
Review Comment:
done
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