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Type:
Task
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Resolution: Declined
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Priority:
Major - P3
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None
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Affects Version/s: None
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Component/s: None
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None
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Service Arch
For example, I want to define the following:
types:
fcv_string:
bson_serialization_type: string
description: >-
Ensures that the version strings in featureCompatibilityVersion documents
serialize/deserialize to a fixed set of string values
cpp_type: "ServerGlobalParams::FeatureCompatibility::Version"
serializer: "::mongo::FeatureCompatibilityVersionParser::serializeVersion"
deserializer: "mongo::FeatureCompatibilityVersionParser::parseVersion"
ServerGlobalParams::FeatureCompatibility::Version is of type C++ enum, which has no default constructor/initialize value. Therefore, IDL ends up generating C++ code that will not compile:
build/opt/mongo/db/commands/set_feature_compatibility_version_gen.cpp:42:50: error: variable 'localCmdType' is uninitialized when used here [-Werror,-Wuninitialized]
SetFeatureCompatibilityVersionCommand object(localCmdType);
^~~~~~~~~~~~
build/opt/mongo/db/commands/set_feature_compatibility_version_gen.cpp:41:5: note: variable 'localCmdType' is declared here
ServerGlobalParams::FeatureCompatibility::Version localCmdType;
^
It would be nice for IDL to support C++ Enum types in this regard.
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