public T Execute(object[] parameters)
{
var db = (IDataContext)parameters[0];
var ctx = DataContextInfo.Create(db);
return((T)GetInfo(db).GetElement(null, ctx, _expression, parameters));
}
public static int InsertOrReplace <T>(this IDataContext dataContext, IEnumerable <T> objs)
{
int cnt = 0;
foreach (var obj in objs)
{
cnt += Query <T> .InsertOrReplace(DataContextInfo.Create(dataContext), obj);
}
return(cnt);
}
Query <T> GetInfo(IDataContext dataContext)
{
var dataContextInfo = DataContextInfo.Create(dataContext);
string lastContextID;
MappingSchema lastMappingSchema;
Query <T> query;
lock (_sync)
{
lastContextID = _lastContextID;
lastMappingSchema = _lastMappingSchema;
query = _lastQuery;
}
var contextID = dataContextInfo.ContextID;
var mappingSchema = dataContextInfo.MappingSchema;
if (lastContextID != contextID || lastMappingSchema != mappingSchema)
{
query = null;
}
if (query == null)
{
var key = new { contextID, mappingSchema };
lock (_sync)
_infos.TryGetValue(key, out query);
if (query == null)
{
lock (_sync)
{
_infos.TryGetValue(key, out query);
if (query == null)
{
query = new ExpressionBuilder(new Query <T>(), dataContextInfo, _expression, _lambda.Parameters.ToArray())
.Build <T>();
_infos.Add(key, query);
_lastContextID = contextID;
_lastMappingSchema = mappingSchema;
_lastQuery = query;
}
}
}
}
return(query);
}
public static int Delete <T>([NotNull] this IDataContext dataContext, T obj)
{
return(Query <T> .Delete(DataContextInfo.Create(dataContext), obj));
}
public static int Update <T>(this IDataContext dataContext, T obj)
{
return(Query <T> .Update(DataContextInfo.Create(dataContext), obj));
}
public static object InsertWithOutput <T>(this IDataContext dataContext, T obj)
{
return(Query <T> .InsertWithOutput(DataContextInfo.Create(dataContext), obj));
}
public static int InsertOrReplace <T>(this IDataContext dataContext, T obj)
{
return(Query <T> .InsertOrReplace(DataContextInfo.Create(dataContext), obj));
}