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Posted to issues@ignite.apache.org by "Pavel Tupitsyn (Jira)" <ji...@apache.org> on 2021/04/13 15:20:00 UTC
[jira] [Assigned] (IGNITE-14523) Support for string.Compare method
in Apache Ignite LINQ provider
[ https://issues.apache.org/jira/browse/IGNITE-14523?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Pavel Tupitsyn reassigned IGNITE-14523:
---------------------------------------
Assignee: Oleg Bevz (was: Pavel Tupitsyn)
> Support for string.Compare method in Apache Ignite LINQ provider
> ----------------------------------------------------------------
>
> Key: IGNITE-14523
> URL: https://issues.apache.org/jira/browse/IGNITE-14523
> Project: Ignite
> Issue Type: New Feature
> Components: thin client
> Affects Versions: 2.9.1
> Reporter: Oleg Bevz
> Assignee: Oleg Bevz
> Priority: Critical
> Fix For: 2.9.1
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Hello, currently Apache Ignite does not support string comparison for LINQ provider (Apache.Ignite.Linq project).
> For example following modified query insideThinClientQueryExample.ScanQueryExample method will throw Exception:
> var employees = cache.AsCacheQueryable().Select(x => x.Value).Where(x => string.Compare(x.Name, "Daniel Adams") >= 0);
> Business case: in our project we use DevExteme.AspNet.Data library to build LINQ queries for Apache Ignite and in some cases the library builds complex queries with string.Compare method call.
> Exception details:
> Exception has been thrown by the target of an invocation. System.Reflection.TargetInvocationException System.Object InvokeMethod(System.Object, System.Object[], System.Signature, Boolean) System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NotSupportedException: Method not supported: System.String.(Int32 Compare(System.String, System.String))
> at Apache.Ignite.Linq.Impl.MethodVisitor.VisitMethodCall(MethodCallExpression expression, CacheQueryExpressionVisitor visitor)
> at Apache.Ignite.Linq.Impl.CacheQueryExpressionVisitor.VisitMethodCall(MethodCallExpression expression)
> at Remotion.Linq.Parsing.ThrowingExpressionVisitor.Visit(Expression expression)
> at Apache.Ignite.Linq.Impl.CacheQueryExpressionVisitor.VisitBinary(BinaryExpression expression)
> at Remotion.Linq.Parsing.ThrowingExpressionVisitor.Visit(Expression expression)
> at Apache.Ignite.Linq.Impl.CacheQueryExpressionVisitor.VisitBinary(BinaryExpression expression)
> at Remotion.Linq.Parsing.ThrowingExpressionVisitor.Visit(Expression expression)
> at Apache.Ignite.Linq.Impl.CacheQueryModelVisitor.VisitWhereClause(WhereClause whereClause, Int32 index, Boolean hasGroups)
> at Apache.Ignite.Linq.Impl.CacheQueryModelVisitor.ProcessGroupings(QueryModel queryModel)
> at Apache.Ignite.Linq.Impl.CacheQueryModelVisitor.VisitBodyClauses(ObservableCollection`1 bodyClauses, QueryModel queryModel)
> at Remotion.Linq.QueryModelVisitorBase.VisitQueryModel(QueryModel queryModel)
> at Apache.Ignite.Linq.Impl.CacheQueryModelVisitor.VisitQueryModel(QueryModel queryModel, Boolean includeAllFields, Boolean copyAliases)
> at Apache.Ignite.Linq.Impl.CacheQueryModelVisitor.GenerateQuery(QueryModel queryModel)
> at Apache.Ignite.Linq.Impl.CacheFieldsQueryExecutor.ExecuteCollection[T](QueryModel queryModel)
> at Remotion.Linq.Clauses.StreamedData.StreamedSequenceInfo.ExecuteQueryModel(QueryModel queryModel, IQueryExecutor executor)
> at Apache.Ignite.Linq.Impl.CacheFieldsQueryProvider.Execute[TResult](Expression expression)
>
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