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Posted to notifications@accumulo.apache.org by "Eric Newton (JIRA)" <ji...@apache.org> on 2013/01/31 02:59:13 UTC
[jira] [Created] (ACCUMULO-1014) query language
Eric Newton created ACCUMULO-1014:
-------------------------------------
Summary: query language
Key: ACCUMULO-1014
URL: https://issues.apache.org/jira/browse/ACCUMULO-1014
Project: Accumulo
Issue Type: Improvement
Components: client
Reporter: Eric Newton
Assignee: Billie Rinaldi
Fix For: 1.6.0
Implement a query language.
We can do some basic selection/projection and roll-up using iterators.
I'm thinking something like:
{noformat}
using LatLonRow;
SELECT *
WHERE row MATCHES LatLonRow.ranges('0.0', '0.0', '0.25', '0.25')
AND columnFamily == 'mapLevel2'
;
{noformat}
Given a table structure, we can support the expressiveness of JEXL and the wikisearch example.
{noformat}
using ShardDocument;
SELECT ShardDocument.document(row)
WHERE row MATCHES ShardDocument.ranges('1990-01-01', '2012-11-10')
AND ShardDocument.jexl(
'author ~= ".*Adams" and body = "don't" and body = 'panic'
);
{noformat}
I'm sure the syntax is highly suspect, but abuse of the index as well as the indexing structure ought to be something expressible to mere mortals.
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