[CASSANDRA-2355] Allow parameters for comparator

• Type: New Feature
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 0.8.1
• Assignee: Sylvain Lebresne Assign to me
• Reporter: Sylvain Lebresne

Authors

Sylvain Lebresne

Reviewers

Jonathan Ellis

• Created: 18/Mar/11 14:52
• Updated: 16/Apr/19 09:33
• Resolved: 09/May/11 17:25

Description

Being able to provide arguments to a comparator, to parametrize its behavior, can be useful.
For example, a generic ReverseComparator is trivial to write, but without the ability to provide arguments at the comparator constriction, it cannot be used.
CASSANDRA-2231 provides another use case for this.

This ticket proposes to introduce a parser for comparator definition that supports optional parameters and to introduce a generic ReverseType as a simple example of this.

Issue Links

• is depended upon by: CASSANDRA-2231 Add CompositeType comparer to the comparers provided in org.apache.cassandra.db.marshal