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https://issues.apache.org/jira/browse/CAY-1693?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrus Adamchik updated CAY-1693:
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Description:
I need to use some bitmasks as query criteria. It appears that most DBs support
bitwise operations:
http://en.wikipedia.org/wiki/Bitwise_operation
http://dev.mysql.com/doc/refman/5.1/en/bit-functions.html
http://www.postgresql.org/docs/8.4/static/functions-math.html
I am going to add support in Expressions, SelectQueries and the underlying
stack for &, ~, |, ^... For now a very basic implementation with no parser
support, no ExpressionFactory support, and probably just MySQL adapter support.
It will stay under the radar, hopefully useful to people who need them until we
have the time to expand it to cover all DBs and all use cases.
was:
It appears that most DBs support bitwise operations:
http://en.wikipedia.org/wiki/Bitwise_operation
http://dev.mysql.com/doc/refman/5.1/en/bit-functions.html
http://www.postgresql.org/docs/8.4/static/functions-math.html
I am going to add support in Expressions, SelectQueries and the underlying
stack for &, ~, |, ^... For now a very basic implementation with no parser
support, no ExpressionFactory support, and probably just MySQL adapter support.
It will stay under the radar, hopefully useful to people who need them until we
have the time to expand it to cover all DBs and all use cases.
> Initial support for bitwise operators in Expression and SelectQuery
> -------------------------------------------------------------------
>
> Key: CAY-1693
> URL: https://issues.apache.org/jira/browse/CAY-1693
> Project: Cayenne
> Issue Type: Task
> Components: Core Library
> Affects Versions: 3.1M3
> Reporter: Andrus Adamchik
> Assignee: Andrus Adamchik
>
> I need to use some bitmasks as query criteria. It appears that most DBs
> support bitwise operations:
> http://en.wikipedia.org/wiki/Bitwise_operation
> http://dev.mysql.com/doc/refman/5.1/en/bit-functions.html
> http://www.postgresql.org/docs/8.4/static/functions-math.html
> I am going to add support in Expressions, SelectQueries and the underlying
> stack for &, ~, |, ^... For now a very basic implementation with no parser
> support, no ExpressionFactory support, and probably just MySQL adapter
> support. It will stay under the radar, hopefully useful to people who need
> them until we have the time to expand it to cover all DBs and all use cases.
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