internal static DbType GetEnumDbType(Type enumType)
{
if (EnumMetaDataCacheManager.GetEnumStorageType(enumType) == EnumStorageType.EnumValue)
{
return(DbType.Int32);
}
else
{
return(DbType.AnsiString);
}
}
private static string GetCondition(DataQueryType dataQueryType, object propertyValue, string columnName, Operator optr)
{
if (propertyValue == null)
{
return(string.Empty);
}
if (optr == Operator.In)
{
#region In
if (propertyValue is IList <long> )
{
return(string.Format("{0} IN ({1})", columnName, GetSqlInConditions((IEnumerable <long>)propertyValue)));
}
else if (propertyValue is IList <int> )
{
return(string.Format("{0} IN ({1})", columnName, GetSqlInConditions((IEnumerable <int>)propertyValue)));
}
else if (propertyValue is IList <string> )
{
return(string.Format("{0} IN ({1})", columnName, GetSqlInConditions((IEnumerable <string>)propertyValue)));
}
else
{
return(string.Empty);
}
#endregion
}
if (optr == Operator.NotIn)
{
#region Not In
if (propertyValue is IList <long> )
{
return(string.Format("{0} Not IN ({1})", columnName, GetSqlInConditions((IEnumerable <long>)propertyValue)));
}
else if (propertyValue is IList <int> )
{
return(string.Format("{0} Not IN ({1})", columnName, GetSqlInConditions((IEnumerable <int>)propertyValue)));
}
else if (propertyValue is IList <string> )
{
return(string.Format("{0} Not IN ({1})", columnName, GetSqlInConditions((IEnumerable <string>)propertyValue)));
}
else
{
return(string.Empty);
}
#endregion
}
if (dataQueryType == DataQueryType.String)
{
#region
string value = (string)propertyValue;
value = value.Replace(@"\", @"\\");
if (string.IsNullOrEmpty(value))
{
return(string.Empty);
}
switch (optr)
{
case Operator.Eq:
return(string.Format("{0}='{1}'", columnName, value));
case Operator.NotEq:
return(string.Format("{0}!='{1}'", columnName, value));
case Operator.Like:
return(string.Format("{0} like '%{1}%'", columnName, value));
case Operator.LeftLike:
return(string.Format("{0} like '{1}%'", columnName, value));
case Operator.RightLike:
return(string.Format("{0} like '%{1}'", columnName, value));
default:
throw new Exception(string.Format("当属性类型是string时,操作符{0}无效", optr));
}
#endregion
}
else if (dataQueryType == DataQueryType.DateTime)
{
#region
DateTime value = (DateTime)propertyValue;
if (value == DateTime.MinValue)
{
return(string.Empty);
}
switch (optr)
{
case Operator.Eq:
return(string.Format("{0}='{1}'", columnName, value.ToString(_DateTimeFormat)));
case Operator.NotEq:
return(string.Format("{0}!='{1}'", columnName, value.ToString(_DateTimeFormat)));
case Operator.Gt:
return(string.Format("{0}>'{1}'", columnName, value.ToString(_DateTimeFormat)));
case Operator.Ge:
return(string.Format("{0}>='{1}'", columnName, value.ToString(_DateTimeFormat)));
case Operator.Lt:
return(string.Format("{0}<'{1}'", columnName, value.ToString(_DateTimeFormat)));
case Operator.Le:
return(string.Format("{0}<='{1}'", columnName, value.ToString(_DateTimeFormat)));
default:
throw new Exception(string.Format("当属性类型是DateTime时,操作符{0}无效", optr));
}
#endregion
}
else if (dataQueryType == DataQueryType.Number)
{
#region
switch (optr)
{
case Operator.Eq:
return(string.Format("{0}={1}", columnName, propertyValue.ToString()));
case Operator.NotEq:
return(string.Format("{0}!={1}", columnName, propertyValue.ToString()));
case Operator.Gt:
return(string.Format("{0}>{1}", columnName, propertyValue.ToString()));
case Operator.Ge:
return(string.Format("{0}>={1}", columnName, propertyValue.ToString()));
case Operator.Lt:
return(string.Format("{0}<{1}", columnName, propertyValue.ToString()));
case Operator.Le:
return(string.Format("{0}<={1}", columnName, propertyValue.ToString()));
default:
throw new Exception(string.Format("当属性类型是整数时,操作符{0}无效", optr));
}
#endregion
}
else if (dataQueryType == DataQueryType.Enum)
{
#region
if (EnumMetaDataCacheManager.GetEnumStorageType(propertyValue.GetType()) == EnumStorageType.EnumName)
{
string value = propertyValue.ToString();
switch (optr)
{
case Operator.Eq:
return(string.Format("{0}='{1}'", columnName, value));
case Operator.NotEq:
return(string.Format("{0}!='{1}'", columnName, value));
default:
throw new Exception(string.Format("当属性类型是枚举时,操作符{0}无效", optr));
}
}
else
{
int value = (int)propertyValue;
switch (optr)
{
case Operator.Eq:
return(string.Format("{0}={1}", columnName, value));
case Operator.NotEq:
return(string.Format("{0}!={1}", columnName, value));
default:
throw new Exception(string.Format("当属性类型是枚举时,操作符{0}无效", optr));
}
}
#endregion
}
else
{
throw new Exception(string.Format("查询条件的属性类型{0}无效", dataQueryType));
}
}