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https://issues.apache.org/jira/browse/IGNITE-3325?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15417091#comment-15417091
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Pavel Tupitsyn commented on IGNITE-3325:
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* CompiledQuery class deprecated
* CompiledQuery2 class added with all the same methods, but taking
Expression<Func> instead of raw Func<>. For most use cases the transition will
not require code changes.
** Fixes Skip/Take and similar issues
** Allows embedded arguments (specify constant literals directly, e.g. .Where(x
< 5))
** Allows using the same argument multiple times
* Compile(IQueryable query) overload added
** Allows any number of arguments
** Allows compiling existing queries (no requirement to provide an expression)
** Allows "query builder" pattern where LINQ expression is constructed step by
step
> .NET: Improve CompiledQuery in LINQ provider
> --------------------------------------------
>
> Key: IGNITE-3325
> URL: https://issues.apache.org/jira/browse/IGNITE-3325
> Project: Ignite
> Issue Type: Bug
> Components: community, platforms
> Affects Versions: 1.6
> Reporter: Pavel Tupitsyn
> Assignee: Pavel Tupitsyn
> Labels: .net
> Fix For: 1.8
>
>
> User reported that the following code fails with "Error compiling query: all
> compiled query arguments should come from enclosing delegate parameters."
> {code}
> Func<int,int,int,IQueryCursor<ICacheEntry<int, OrderEntity>>> qry =
> CompiledQuery.Compile((int x, int y,int z) =>
> orderCache.AsCacheQueryable().Where(e => e.Value.OrderId % x == z).Take(y));
> {code}
> Other limitations are:
> * Embedded parameters are not supported
> * Maximum number of parameters is 8
> We should provide additional additional method to compile a delegate which
> takes an array of args.
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