public T ExecuteQuery <T>(
IExecutionPlan <T> plan,
IExecutionContext context)
{
ITable[] tables = TableLocator.FindAffectedTables(context.Database, plan);
for (int i = 0; i < tables.Length; i++)
{
this.AcquireReadLock(tables[i], context);
}
try
{
var item = plan.Execute(context);
EntityPropertyCloner <T> cloner = null;
if (this.database.Tables.IsEntityType <T>())
{
cloner = EntityPropertyCloner <T> .Instance;
}
if (cloner != null && item != null)
{
var cloned = Activator.CreateInstance <T>();
cloner.Clone(item, cloned);
// Remove Aliased Attributes these are getting added by the Query Plan Execution
#pragma warning disable IDE0019 // Use pattern matching
var entity = item as Entity;
#pragma warning restore IDE0019 // Use pattern matching
if (entity != null)
{
foreach (var attribute in entity.Attributes.ToList().Where(attribute => attribute.Value is AliasedValue))
{
entity.Attributes.Remove(attribute.Key);
}
}
return(cloned);
}
else
{
return(item);
}
}
finally
{
for (int i = 0; i < tables.Length; i++)
{
this.ReleaseReadLock(tables[i], context);
}
}
}
private IEnumerator <T> ExecuteQuery <T>(
IExecutionPlan <IEnumerable <T> > plan,
IExecutionContext context,
ITable[] tablesToLock,
bool cloneEntities)
{
ITable[] tables = TableLocator.FindAffectedTables(context.Database, plan);
EntityPropertyCloner <T> cloner = null;
if (cloneEntities && this.database.Tables.IsEntityType <T>())
{
cloner = EntityPropertyCloner <T> .Instance;
}
LinkedList <T> result = new LinkedList <T>();
for (int i = 0; i < tablesToLock.Length; i++)
{
this.AcquireReadLock(tablesToLock[i], context);
}
IEnumerable <T> query = plan.Execute(context);
try
{
foreach (T item in query)
{
if (cloner != null)
{
T resultEntity = Activator.CreateInstance <T>();
cloner.Clone(item, resultEntity);
result.AddLast(resultEntity);
// Remove Aliased Attributes these are getting added by the Query Plan Execution
#pragma warning disable IDE0019 // Use pattern matching
var entity = item as Entity;
#pragma warning restore IDE0019 // Use pattern matching
if (entity != null)
{
foreach (var attribute in entity.Attributes.ToList().Where(attribute => attribute.Value is AliasedValue))
{
entity.Attributes.Remove(attribute.Key);
}
}
}
else
{
result.AddLast(item);
}
}
}
finally
{
for (int i = 0; i < tablesToLock.Length; i++)
{
this.ReleaseReadLock(tablesToLock[i], context);
}
}
return(result.GetEnumerator());
}