public static KeyValuePair <string, KeyValuePair <string[], object[]> > GetPropertiesDelete(Expression <Func <TEntity, bool> > where)
{
ConditionBuilder whereBuilder = new ConditionBuilder((typeof(TEntity)).ToString());
whereBuilder.Build(where.Body);
List <string> param = new List <string>();
List <object> pvalue = new List <object>();
param.AddRange(whereBuilder.WhereParam);
pvalue.AddRange(whereBuilder.Arguments);
string sql = string.Format("delete from {0} WHERE {1}", (typeof(TEntity)).ToString().Split('.').Last(), whereBuilder.Condition);
KeyValuePair <string, KeyValuePair <string[], object[]> > kvp = new KeyValuePair <string, KeyValuePair <string[], object[]> >(sql, new KeyValuePair <string[], object[]>(param.ToArray(), pvalue.ToArray()));
return(kvp);
}
public static KeyValuePair <string, KeyValuePair <string[], object[]> > GetPropertiesUpdate(Expression <Func <TEntity> > expression, Expression <Func <TEntity, bool> > where)
{
ConditionBuilder whereBuilder = new ConditionBuilder((typeof(TEntity)).ToString());
whereBuilder.Build(where.Body);
var updateExp = expression.Body as MemberInitExpression;
var updateList = updateExp.Bindings.Cast <MemberAssignment>().Select(a => new
{
Name = a.Member.Name,
Value = GetMemeberValue(a)
});
StringBuilder sqlUpdate = new StringBuilder();
int i = 0;
List <string> param = new List <string>();
List <object> pvalue = new List <object>();
foreach (var item in updateList)
{
string column = item.Name;
string pname = string.Format("p{0}__{1}", i.ToString(), column);
if (!string.IsNullOrEmpty(column))
{
sqlUpdate.AppendFormat(" {0} = @{1},", column, pname);
param.Add(pname);
//zsp 空时间更新为空
if (item.Value != null && item.Value is DateTime && ((DateTime)item.Value) == DateTime.MinValue)
{
pvalue.Add(null);
}
else
{
pvalue.Add(item.Value);
}
i++;
}
}
param.AddRange(whereBuilder.WhereParam);
pvalue.AddRange(whereBuilder.Arguments);
string sql = string.Format("UPDATE {0} SET {1} WHERE {2}", (typeof(TEntity)).ToString().Split('.').Last(), sqlUpdate.ToString().TrimEnd(','), whereBuilder.Condition);
KeyValuePair <string, KeyValuePair <string[], object[]> > kvp = new KeyValuePair <string, KeyValuePair <string[], object[]> >(sql, new KeyValuePair <string[], object[]>(param.ToArray(), pvalue.ToArray()));
return(kvp);
}
