protected override DbCommandDefinition CreateDbCommandDefinition(DbProviderManifest providerManifest, DbCommandTree commandTree)
{
Debug.Assert(providerManifest != null, "providerManifest != null");
Debug.Assert(
providerManifest is LegacyDbProviderManifestWrapper, "providerManifest expected to be LegacyDbProviderManifestWrapper");
Debug.Assert(commandTree != null, "commandTree != null");
Debug.Assert(commandTree is DbQueryCommandTree, "Only query trees are supported");
Debug.Assert(commandTree.DataSpace == DataSpace.SSpace, "SSpace tree expected");
try
{
var legacyMetadata = commandTree.MetadataWorkspace.ToLegacyMetadataWorkspace();
var legacyQuery =
((DbQueryCommandTree)commandTree).Query.Accept(
new LegacyDbExpressionConverter(
(LegacyMetadata.StoreItemCollection)
legacyMetadata.GetItemCollection(LegacyMetadata.DataSpace.SSpace)));
var legacyCommandTree =
(LegacyCommandTrees.DbCommandTree)LegacyDbQueryCommandTreeCtor.Invoke(
new object[]
{
legacyMetadata,
LegacyMetadata.DataSpace.SSpace,
legacyQuery
});
return(new LegacyDbCommandDefinitionWrapper(
_wrappedProviderServices.CreateCommandDefinition(
((LegacyDbProviderManifestWrapper)providerManifest).WrappedManifest,
legacyCommandTree)));
}
catch (SystemData.ProviderIncompatibleException exception)
{
throw new ProviderIncompatibleException(exception.Message, exception.InnerException);
}
}
