/ doc / toc / ARCQuery / Class / QueryExpressionSelfCreate / TryCheckForExistenceOfKey

TryCheckForExistenceOfKey

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__TOCDet/Assembly = ARCQuery
__TOCDet/Description = Used by query expressions in order to catch wrong field names used or misspelling of field names.0x000D0x000A0x000D0x000AReturns TRUE if either:0x000D0x000A1) -TryGetFromTypeAndFieldName succeeds (in which case out parameter keyAsPK will be set),0x000D0x000A2) (new from Jan 2022) -AllEntityMethodKeysForEntityTypeDict contains the key,0x000D0x000A3) -CurrentStrictness- = OFF,0x000D0x000A4) -Result- is empty, or,0x000D0x000A5) At least one element in -Result- contains the given key0x000D0x000A0x000D0x000ANote that this check must be deferred to the actual execution of the query, not at -TryParse-, because the query expression mechanism has no concept of for which entity types it operates on.0x000D0x000A0x000D0x000AWill call -ShouldTerminate- if fails to get the key, this again will set -TerminateReason- with detailed information about available keys (that is, with a helpful error message).
__TOCDet/DocFragType = ClassMember
__TOCDet/IsInherited = True
__TOCDet/IsInheritedDoc = True
__TOCDet/Name = TryCheckForExistenceOfKey
__TOCDet/Namespace = ARCQuery
__TOCDet/Type = QueryExpressionSelfCreate
__TOCDet/Attribute/DeclaringType = QueryExpression
__TOCDet/Attribute/Description = Used by query expressions in order to catch wrong field names used or misspelling of field names.0x000D0x000A0x000D0x000AReturns TRUE if either:0x000D0x000A1) -TryGetFromTypeAndFieldName succeeds (in which case out parameter keyAsPK will be set),0x000D0x000A2) (new from Jan 2022) -AllEntityMethodKeysForEntityTypeDict contains the key,0x000D0x000A3) -CurrentStrictness- = OFF,0x000D0x000A4) -Result- is empty, or,0x000D0x000A5) At least one element in -Result- contains the given key0x000D0x000A0x000D0x000ANote that this check must be deferred to the actual execution of the query, not at -TryParse-, because the query expression mechanism has no concept of for which entity types it operates on.0x000D0x000A0x000D0x000AWill call -ShouldTerminate- if fails to get the key, this again will set -TerminateReason- with detailed information about available keys (that is, with a helpful error message).
__TOCDet/Attribute/MethodName = TryCheckForExistenceOfKey
__TOCDet/Attribute/MethodSignature = Boolean TryCheckForExistenceOfKey(ARCQuery.Query, ARCCore.IK, ARCCore.PK ByRef)

Edit single sub keys only: __TOCDet

Generated 2025-08-27 18:06:59.427 UTC