private List <ResultObjectMapping> LoadData(QueryModel queryModel)
{
var sqlCommand =
SqlGeneratorQueryModelVisitor.GenerateSqlQuery(
queryModel,
Locator,
ConverterFactory,
ExtensibilityProvider);
var resultItems = new List <ResultObjectMapping>();
using (var cms = ChunkedMemoryStream.Create())
{
var reader = cms.UseBufferedReader(string.Empty);
DatabaseQuery.Execute(sqlCommand.CreateQuery(cms), dr => resultItems.Add(sqlCommand.ProcessRow(dr, reader)));
}
if (queryModel.ResultOperators.Any(it => it is LastResultOperator) && resultItems.Count > 1)
{
resultItems.RemoveRange(0, resultItems.Count - 1);
}
return(resultItems);
}
public static SqlCommandData GenerateSqlQuery(
QueryModel queryModel,
IServiceProvider locator,
IPostgresConverterFactory factory,
IExtensibilityProvider extensibilityProvider)
{
Contract.Requires(queryModel != null);
Contract.Requires(locator != null);
Contract.Requires(factory != null);
Contract.Requires(extensibilityProvider != null);
var visitor =
new SqlGeneratorQueryModelVisitor(
new MainQueryParts(
locator,
factory,
extensibilityProvider.ResolvePlugins<IQuerySimplification>(),
extensibilityProvider.ResolvePlugins<IExpressionMatcher>(),
extensibilityProvider.ResolvePlugins<IMemberMatcher>(),
extensibilityProvider.ResolvePlugins<IProjectionMatcher>()));
visitor.VisitQueryModel(queryModel);
return new SqlCommandData(visitor.QueryParts);
}
public static SqlCommandData GenerateSqlQuery(
QueryModel queryModel,
IServiceProvider locator,
IPostgresConverterFactory factory,
IExtensibilityProvider extensibilityProvider)
{
Contract.Requires(queryModel != null);
Contract.Requires(locator != null);
Contract.Requires(factory != null);
Contract.Requires(extensibilityProvider != null);
var visitor =
new SqlGeneratorQueryModelVisitor(
new MainQueryParts(
locator,
factory,
extensibilityProvider.ResolvePlugins <IQuerySimplification>(),
extensibilityProvider.ResolvePlugins <IExpressionMatcher>(),
extensibilityProvider.ResolvePlugins <IMemberMatcher>(),
extensibilityProvider.ResolvePlugins <IProjectionMatcher>()));
visitor.VisitQueryModel(queryModel);
return(new SqlCommandData(visitor.QueryParts));
}
