/// <summary>
/// This Prefetch call is a simpler API for when you are not interested in tweaking the Query
/// </summary>
/// <param name="maps">The Path to the data</param>
public void Prefetch(params tgPrefetchMap[] maps)
{
if (maps != null)
{
if (prefetchMaps == null)
{
prefetchMaps = new List <tgPrefetchMap>();
}
tgPrefetchParameters data = new tgPrefetchParameters();
// Create the query, we do so in reverse order
for (int i = maps.Length - 1; i >= 0; i--)
{
tgPrefetchDelegate prefetchDelegate = maps[i].PrefetchDelegate;
prefetchDelegate(data);
}
// The path is the next to the last PropertyName
string path = string.Empty;
if (maps.Length > 1)
{
path = maps[maps.Length - 2].PropertyName;
}
tgPrefetchMap rootMap = maps[maps.Length - 1];
rootMap.Query = data.Root;
rootMap.Path = path;
prefetchMaps.Add(rootMap);
rootMap.Query.Select(rootMap.Query);
}
}
/// <summary>
/// This Prefetch allows you to fill in the Select() statement for the query to control what columns are brought back
/// </summary>
/// <typeparam name="T">The Type of the esDynamicQuery returned</typeparam>
/// <param name="provideSelect">If true then you must fill in the Query.Select() clause</param>
/// <param name="maps">The Path to the data</param>
/// <returns>The esDynamicQuery for the Type of query you intend to load</returns>
public T Prefetch <T>(bool provideSelect, params tgPrefetchMap[] maps) where T : tgDynamicQuery
{
if (maps != null)
{
if (prefetchMaps == null)
{
prefetchMaps = new List <tgPrefetchMap>();
}
tgPrefetchParameters data = new tgPrefetchParameters();
// Create the query, we do so in reverse order
for (int i = maps.Length - 1; i >= 0; i--)
{
tgPrefetchDelegate prefetchDelegate = maps[i].PrefetchDelegate;
prefetchDelegate(data);
}
// The path is the next to the last PropertyName
string path = string.Empty;
if (maps.Length > 1)
{
path = maps[maps.Length - 2].PropertyName;
}
tgPrefetchMap rootMap = maps[maps.Length - 1];
rootMap.Query = data.Root;
rootMap.Path = path;
prefetchMaps.Add(rootMap);
if (provideSelect)
{
rootMap.Query.Select(rootMap.Query);
}
return((T)data.Root);
}
return(null);
}
