void QueryCondition_BeforeQuery(object sender, QueryCondition.BeforeQueryEventArgs e)
{
//leixu 2015年10月29日16:01:30
if (HttpContext.Current == null)
{
return;
}
QueryCondition q = sender as QueryCondition;
JContext jc = JContext.Current;
Qc qc = null;
string qId = q.Id;
string sitekey = jc.Area.AreaKey;
if (qId == null)
{
qId = jc.Navigation.ToString();
}
else
{
if (qId.Contains(":"))
{
string[] ar = StringUtil.Split(qId, ":", true, true);
sitekey = ar[0];
qId = ar[1];
}
}
if (string.IsNullOrEmpty(qId))
{
return;
}
qc = GetById(sitekey, string.Format("{0}.{1}.{2}", qId, e.Method, e.DbProviderName));
if (qc == null)
{
qc = GetById(sitekey, string.Format("{0}.{1}", qId, e.Method));
}
if (qc == null)
{
qc = GetById(sitekey, string.Format("{0}.{1}", qId, e.DbProviderName));
}
if (qc == null)
{
qc = GetById(sitekey, qId);
}
if (qc == null)
{
_logger.Warn("query:{0} not found!", q.Id);
return;
}
if (qc.PageSize > -1 && q.PageSize == -1)
{
q.PageSize = qc.PageSize;
}
q.Parameters.Clear();
if ((string.IsNullOrEmpty(q.TableField) || q.TableField == "*" || q.EventFiredTimes > 1) && StringUtil.HasText(qc.Field))
{
if (qc.Field.Contains("$"))
{
using (StringWriter writer = new StringWriter())
{
Dictionary <string, object> di = new Dictionary <string, object>(jc.ViewData);
di["this"] = sender;
ServiceLocator.Instance.Resolve <ITemplateEngine>().Process(di,
string.Empty,
writer,
qc.Field);
q.TableField = writer.GetStringBuilder().ToString();
}
}
else
{
q.TableField = qc.Field;
}
}
// 解析field里的@参数
Match m = Regex.Match(q.TableField, @"@\w+");
while (m.Success)
{
string param_name = m.Value.Substring(1).Trim();
if (q[param_name] != null)
{
q.Parameters[param_name] = q[param_name];
}
m = m.NextMatch();
}
if (StringUtil.HasText(qc.AllowedOrderbyColumns))
{
q.AllowedOrderbyColumns.AddRange(StringUtil.CommaDelimitedListToStringArray(qc.AllowedOrderbyColumns));
}
if (StringUtil.HasText(qc.Orderby))
{
List <string> ls = new List <string>(StringUtil.CommaDelimitedListToStringArray(qc.Orderby));
if (q.IsAddOrderBy2First)
{
ls.Reverse();
foreach (string oderby in ls)
{
q.InsertOrderby(0, oderby.TrimStart('-'), !oderby.StartsWith("-"));
}
}
else
{
foreach (string oderby in ls)
{
q.AddOrderby(oderby.TrimStart('-'), !oderby.StartsWith("-"));
}
}
}
foreach (string key in qc.Keys)
{
q[key] = qc[key];
}
using (StringWriter writer = new StringWriter())
{
Dictionary <string, object> di = new Dictionary <string, object>(jc.ViewData);
di["this"] = sender;
ServiceLocator.Instance.Resolve <ITemplateEngine>().Process(di,
string.Empty,
writer,
qc.Where);
string sql = Regex.Replace(writer.GetStringBuilder().ToString(), @"\s{1,}|\t|\r|\n", " ");
// 解析where里的@参数
m = Regex.Match(sql, @"@\w+");
while (m.Success)
{
string param_name = m.Value.Substring(1).Trim();
if (q[param_name] != null)
{
q.Parameters[param_name] = q[param_name];
}
m = m.NextMatch();
}
if (StringUtil.HasText(sql))
{
q.WhereClause = sql;
}
}
}
