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From "Andrus Adamchik (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CAY-1726) Expression parser support for bit operators
Date Wed, 18 Jul 2012 18:45:34 GMT
Andrus Adamchik created CAY-1726:
------------------------------------

             Summary: Expression parser support for bit operators
                 Key: CAY-1726
                 URL: https://issues.apache.org/jira/browse/CAY-1726
             Project: Cayenne
          Issue Type: Bug
          Components: Core Library
            Reporter: Andrus Adamchik
            Assignee: Andrus Adamchik


Building upon CAY-1693, let's create support for bit operations in String expressions. Parser
BNF [1] need to be expanded to include &, |, ^, ~, hence allowing creation of these expressions
via 'Expression.fromString(..)". Some examples of how those might look like:

someProperty & 3 = 1
someOtherProperty | 1 = 0
someOtherProperty ^ 1 = 0
~yetAnotherProperty  = 1
someProperty & ~yetAnotherProperty  = 1


[1] http://cayenne.apache.org/doc/bnf-for-expressionparser.html 



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