public static void Execute(bool beginTransation, Action <IDataExecuteContext> action)
{
using (var ds = DataService.BeginSession(null, beginTransation)) {
using (var helper = new DataExecuteContext(ds, beginTransation)) {
action(helper);
}
}
}
public static T Execute <T>(bool beginTransation, System.Func <IDataExecuteContext, T> func)
{
using (var ds = DataService.BeginSession(null, beginTransation)) {
using (var helper = new DataExecuteContext(ds, beginTransation)) {
return(func(helper));
}
}
}
public static void Execute <T>(bool beginTransation, System.Func <T, bool> func) where T : ISessionDataService
{
using (var ds = DataService.BeginSession(null, beginTransation)) {
using (var helper = new DataExecuteContext(ds, beginTransation)) {
var dt = helper.GetDataService <T>();
if (func(dt) && beginTransation)
{
helper.Commit();
}
}
}
}
protected virtual void OnExecute(DataExecuteContext context, ExecutionStatement statement)
{
//根据生成的脚本创建对应的数据命令
var command = context.Session.Build(statement);
if (context.IsScalar)
{
context.Result = command.ExecuteScalar();
return;
}
using (var reader = command.ExecuteReader())
{
context.Result = this.Populate(reader, context.ResultType);
}
}
