Josh Elser created ACCUMULO-697: ----------------------------------- Summary: Break Scanner parameterization from Key,Value to Key,{Something} Key: ACCUMULO-697 URL: https://issues.apache.org/jira/browse/ACCUMULO-697 Project: Accumulo Issue Type: Improvement Components: client Affects Versions: 1.5.0 Reporter: Josh Elser Assignee: Josh Elser
When writing a custom iterator, many times the iterator has some semantic knowledge of what each Key/Value being returned actually means (e.g. A word count could be returning Key/Value but really is returning an Integer/Long count in the Value). This forces the client to know what is going to be returned and handle the cast/transformation. I believe it should be fairly straightforward to encapsulate this transformation inside the Accumulo client code. I plan on investigating the possibility of changing the ScannerBase impl, or perhaps making a TypedScannerBase, in which the iterator at the "top" of the stack for a scan can return something other than a Value to the client. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira