[jira] [Created] (IGNITE-6276) SQL: Investigate parser generators

["Sergey Kalashnikov (JIRA)" <ji...@apache.org>]

Sergey Kalashnikov created IGNITE-6276:
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             Summary: SQL: Investigate parser generators
                 Key: IGNITE-6276
                 URL: https://issues.apache.org/jira/browse/IGNITE-6276
             Project: Ignite
          Issue Type: Improvement
          Components: sql
            Reporter: Sergey Kalashnikov
            Assignee: Sergey Kalashnikov


Now ignite relies on H2 for SQL processing. It has been discussed many times on dev list that we must start introducing our own SQL core in small incremental steps. 

Let's start with analyzing the options for implementing the parser part.

We may begin with http://www.antlr.org/ and create a simple separate project that would generate the parser for some simple DDL commands like DROP INDEX.
This will give us a hint on the complexity and limitations of the approach.

1) Set up Maven/ANTLR.
2) Prepare lexer/parser.
3) Generate.
4) Write a test.



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