/// <summary>
/// Parse the results of a sql query which returns a comlex object
/// </summary>
/// <param name="rows">The query results</param>
/// <param name="propertyGraph">The query columns mapped to an object graph</param>
static IEnumerable <TResult> ParseComplex <TResult>(this IEnumerable <object[]> rows, RootObjectPropertyGraph propertyGraph, ILogger logger, IPropMapValueCache propMapBuilder)
{
var objectGraphCache = new ObjectGraphCache(logger);
var builder = Builders.GetBuilder <TResult>();
foreach (var obj in CreateObject(propertyGraph, objectGraphCache, rows, logger))
{
var result = builder.Build(obj, propMapBuilder, logger);
obj.Dispose();
yield return(result);
}
}
/// <summary>
/// Map a group of rows to an object property graph to an object graph with properties
/// </summary>
/// <param name="objects">An enumerable of objects. Each object can span multiple rows (corresponding to sub properties which are enumerable)</param>
static IEnumerable <ObjectGraph> CreateObject(ObjectPropertyGraph propertyGraph, ObjectGraphCache objectGraphCache, IEnumerable <IEnumerable <object[]> > objects, ILogger logger)
{
foreach (var objectData in objects)
{
var graph = objectGraphCache.ReleseOrCreateItem();
graph.Init(propertyGraph, objectData);
yield return(graph);
}
}
/// <summary>
/// Map a group of rows to an object property graph to an object graph with properties
/// </summary>
/// <param name="objects">A raw block of data, which has not been grouped into objects</param>
static IEnumerable <ObjectGraph> CreateObject(ObjectPropertyGraph propertyGraph, ObjectGraphCache objectGraphCache, IEnumerable <object[]> rows, ILogger logger)
{
var objectsData = propertyGraph.GroupAndFilterData(rows);
return(CreateObject(propertyGraph, objectGraphCache, objectsData, logger));
}
