private string GetWhereFromObj(object whereObj)
{
if (whereObj == null)
{
return(string.Empty);
}
else if (whereObj is String || (whereObj is ValueType && !(whereObj is Enum)))
{
return(Convert.ToString(whereObj));
}
else if (whereObj is IField)
{
return(SqlFormat.GetIFieldSql(whereObj));
}
MDataCell cell = null;
if (whereObj is Enum)
{
cell = _action.Data[(int)whereObj];
}
else if (whereObj is MDataCell)
{
cell = whereObj as MDataCell;
}
else
{
string propName = MBindUI.GetID(whereObj);
if (!string.IsNullOrEmpty(propName))
{
_action.UI.Get(whereObj, null, null);
cell = _action.Data[propName];
}
}
string where = string.Empty;
if (cell != null)
{
#region 从单元格里取值。
if (cell.IsNullOrEmpty)
{
isCanDo = false;
_action.dalHelper.recordsAffected = -2;
_action.dalHelper.debugInfo.Append(AppConst.HR + "error : " + cell.ColumnName + " can't be null" + AppConst.BR);
return("1=2 and " + cell.ColumnName + " is null");
}
switch (_action.dalHelper.dalType)
{
case DalType.Txt:
case DalType.Xml:
switch (DataType.GetGroup(cell.Struct.SqlType))
{
case 1:
case 3:
where = cell.ColumnName + "=" + cell.Value;
break;
default:
where = cell.ColumnName + "='" + cell.Value + "'";
break;
}
break;
default:
where = cell.ColumnName + "=" + _action.dalHelper.Pre + cell.ColumnName;
_action.dalHelper.AddParameters(cell.ColumnName, cell.Value, DataType.GetDbType(cell.Struct.ValueType), cell.Struct.MaxSize, System.Data.ParameterDirection.Input);
break;
}
#endregion
}
return(where);
}
/// <summary>
/// 返回不包括Where条件的字符串
/// </summary>
/// <returns>结果如:Update tableName set Name=@Name,Value=@Value</returns>
internal string GetUpdateSql(object whereObj)
{
isCanDo = false;
StringBuilder _TempSql = new StringBuilder();
_TempSql.Append("Update " + TableName + " set ");
if (!string.IsNullOrEmpty(updateExpression))
{
_TempSql.Append(SqlCompatible.Format(updateExpression, _action.DalType) + ",");
updateExpression = null;//取完值后清除值。
isCanDo = true;
}
string editTime = GetEditTimeSql();//内部判断该字段没有值才会更新。
if (!string.IsNullOrEmpty(editTime))
{
_TempSql.Append(editTime);//自带尾,号
}
MDataCell cell = null;
for (int i = 0; i < _action.Data.Count; i++)
{
cell = _action.Data[i];
if (cell.Struct.IsPrimaryKey || cell.Struct.IsAutoIncrement)
{
continue;//跳过自增或主键列。
}
if (cell.cellValue.State > 1 && (cell.Struct.IsCanNull || !cell.IsNull))
{
if (cell.Struct.SqlType == SqlDbType.Timestamp && (_action.DalType == DalType.MsSql || _action.DalType == DalType.Sybase))
{
//更新时间戳不允许更新。
continue;
}
object value = cell.Value;
DbType dbType = DataType.GetDbType(cell.Struct.SqlType.ToString(), _action.DalType);
if (_action.DalType == DalType.Oracle && dbType == DbType.String && cell.strValue == "" && !cell.Struct.IsCanNull)
{
value = " ";//Oracle not null 字段，不允许设置空值。
}
_action.dalHelper.AddParameters(_action.dalHelper.Pre + cell.ColumnName, value, dbType, cell.Struct.MaxSize, ParameterDirection.Input);
_TempSql.Append(SqlFormat.Keyword(cell.ColumnName, _action.DalType) + "=" + _action.dalHelper.Pre + cell.ColumnName + ",");
isCanDo = true;
}
}
if (!isCanDo)
{
_action.dalHelper.debugInfo.Append(AppConst.HR + "Tip : Can not find the data can be updated!");
}
//switch (_action.dalHelper.dalType)
//{
// case DalType.Oracle:
// case DalType.SQLite:
// _TempSql = _TempSql.Replace("[", "").Replace("]", "");
// break;
// case DalType.MySql:
// _TempSql = _TempSql.Replace("[", "`").Replace("]", "`");
// break;
//}
_TempSql = _TempSql.Remove(_TempSql.Length - 1, 1);
_TempSql.Append(" where " + FormatWhere(whereObj));
return(_TempSql.ToString());
}
/// <summary>
/// 返回插入的字符串
/// </summary>
/// <returns>结果如:insert into tableName(id,Name,Value) values(@id,@Name,@Value)</returns>
internal string GetInsertSql()
{
isCanDo = false;
StringBuilder _TempSql = new StringBuilder();
StringBuilder _TempSql2 = new StringBuilder();
_TempSql.Append("insert into " + TableName + "(");
_TempSql2.Append(") Values(");
MDataCell primaryCell = _action.Data[_action.Data.Columns.FirstPrimary.ColumnName];
int groupID = DataType.GetGroup(primaryCell.Struct.SqlType);
string defaultValue = Convert.ToString(primaryCell.Struct.DefaultValue);
if (primaryCell.IsNullOrEmpty && (groupID == 4 || (groupID == 0 && (primaryCell.Struct.MaxSize <= 0 || primaryCell.Struct.MaxSize >= 36) &&
(defaultValue == "" || defaultValue == "newid" || defaultValue == SqlValue.Guid))))//guid类型
{
primaryCell.Value = Guid.NewGuid();
}
MDataCell cell = null;
for (int i = 0; i < _action.Data.Count; i++)
{
cell = _action.Data[i];
if (cell.Struct.IsAutoIncrement && !_action.AllowInsertID)
{
continue;//跳过自增列。
}
if (cell.IsNull && !cell.Struct.IsCanNull && cell.Struct.DefaultValue == null)
{
string err = AppConst.HR + string.Format("error : {0} {1} can't be insert null", TableName, cell.ColumnName) + AppConst.BR;
Log.Write(err, LogType.DataBase);
_action.dalHelper.DebugInfo.Append(err);
_action.dalHelper.RecordsAffected = -2;
isCanDo = false;
break;
}
if (cell.State > 0)
{
_TempSql.Append(SqlFormat.Keyword(cell.ColumnName, _action.DataBaseType) + ",");
_TempSql2.Append(_action.dalHelper.Pre + cell.ColumnName + ",");
object value = cell.Value;
DbType dbType = DataType.GetDbType(cell.Struct.SqlType.ToString(), _action.DataBaseType);
if (dbType == DbType.String && cell.StringValue == "")
{
if (_action.DataBaseType == DataBaseType.Oracle && !cell.Struct.IsCanNull)
{
value = " ";//Oracle not null 字段，不允许设置空值。
}
if (_action.DataBaseType == DataBaseType.MySql && cell.Struct.MaxSize == 36)
{
value = DBNull.Value;//MySql 的char36 会当成guid处理，不能为空，只能为null。
}
}
_action.dalHelper.AddParameters(_action.dalHelper.Pre + cell.ColumnName, value, dbType, cell.Struct.MaxSize, ParameterDirection.Input);
isCanDo = true;
}
}
switch (_action.dalHelper.DataBaseType)
{
case DataBaseType.Oracle:
if (!_action.AllowInsertID && DataType.GetGroup(primaryCell.Struct.SqlType) == 1)
{
_TempSql.Append(primaryCell.ColumnName + ",");
_TempSql2.Append(AutoID + ".nextval,");
}
break;
}
string sql = _TempSql.ToString().TrimEnd(',') + _TempSql2.ToString().TrimEnd(',') + ")";
switch (_action.dalHelper.DataBaseType)
{
case DataBaseType.PostgreSQL:
if (primaryCell.Struct.IsAutoIncrement && !_action.AllowInsertID && groupID == 1)
{
string key = Convert.ToString(primaryCell.Struct.DefaultValue);
if (!string.IsNullOrEmpty(key))
{
key = key.Replace("nextval", "currval");
sql = sql + "; select " + key + " as OutPutValue";
}
}
else if (!primaryCell.IsNullOrEmpty)
{
sql += string.Format("; select '{0}' as OutPutValue", primaryCell.Value);
}
break;
case DataBaseType.MsSql:
case DataBaseType.Sybase:
if (primaryCell.Struct.IsAutoIncrement && !_action.AllowInsertID && groupID == 1)
{
if (_action.dalHelper.DataBaseType == DataBaseType.Sybase)
{
sql = sql + " select @@idENTITY as OutPutValue";
}
else if (_action.dalHelper.DataBaseType == DataBaseType.MsSql)
{
sql += " select cast(scope_identity() as bigint) as OutPutValue"; //改成bigint避免转换数据溢出
}
}
else if (!primaryCell.IsNullOrEmpty)
{
sql += string.Format(" select '{0}' as OutPutValue", primaryCell.Value);
}
if (_action.AllowInsertID && !_action.dalHelper.IsOpenTrans && primaryCell.Struct.IsAutoIncrement) //非批量操作时
{
sql = "set identity_insert " + SqlFormat.Keyword(TableName, _action.dalHelper.DataBaseType) + " on " + sql + " set identity_insert " + SqlFormat.Keyword(TableName, _action.dalHelper.DataBaseType) + " off";
}
break;
//if (!(Parent.AllowInsertID && !primaryCell.IsNull)) // 对于自行插入id的，跳过，主操作会自动返回id。
//{
// sql += ((groupID == 1 && (primaryCell.IsNull || primaryCell.ToString() == "0")) ? " select cast(scope_identity() as int) as OutPutValue" : string.Format(" select '{0}' as OutPutValue", primaryCell.Value));
//}
//case DalType.Oracle:
// sql += string.Format("BEGIN;select {0}.currval from dual; END;", Autoid);
// break;
}
return(sql);
}
/// <summary>
/// 返回插入的字符串
/// </summary>
/// <returns>结果如:insert into tableName(ID,Name,Value) values(@ID,@Name,@Value)</returns>
internal string GetInsertSql()
{
isCanDo = false;
StringBuilder _TempSql = new StringBuilder();
StringBuilder _TempSql2 = new StringBuilder();
_TempSql.Append("insert into " + TableName + "(");
_TempSql2.Append(") Values(");
MDataCell primaryCell = _action.Data[_action.Data.Columns.FirstPrimary.ColumnName];
int groupID = DataType.GetGroup(primaryCell.Struct.SqlType);
string defaultValue = Convert.ToString(primaryCell.Struct.DefaultValue);
if (primaryCell.IsNullOrEmpty && (groupID == 4 || (groupID == 0 && (primaryCell.Struct.MaxSize <= 0 || primaryCell.Struct.MaxSize >= 36) &&
(defaultValue == "" || defaultValue == "newid" || defaultValue == SqlValue.Guid))))//guid类型
{
primaryCell.Value = Guid.NewGuid();
}
MDataCell cell = null;
for (int i = 0; i < _action.Data.Count; i++)
{
cell = _action.Data[i];
if (cell.Struct.IsAutoIncrement && !_action.AllowInsertID)
{
continue;//跳过自增列。
}
if (cell.IsNull && !cell.Struct.IsCanNull && cell.Struct.DefaultValue == null)
{
_action.dalHelper.debugInfo.Append(AppConst.HR + "error : " + cell.ColumnName + " can't be null" + AppConst.BR);
_action.dalHelper.recordsAffected = -2;
isCanDo = false;
break;
}
if (cell.cellValue.State > 0)
{
_TempSql.Append(SqlFormat.Keyword(cell.ColumnName, _action.DalType) + ",");
_TempSql2.Append(_action.dalHelper.Pre + cell.ColumnName + ",");
object value = cell.Value;
DbType dbType = DataType.GetDbType(cell.Struct.SqlType.ToString(), _action.DalType);
if (_action.DalType == DalType.Oracle && dbType == DbType.String && cell.strValue == "" && !cell.Struct.IsCanNull)
{
value = " ";
}
_action.dalHelper.AddParameters(_action.dalHelper.Pre + cell.ColumnName, value, dbType, cell.Struct.MaxSize, ParameterDirection.Input);
isCanDo = true;
}
}
switch (_action.dalHelper.dalType)
{
case DalType.Oracle:
if (!_action.AllowInsertID && DataType.GetGroup(primaryCell.Struct.SqlType) == 1)
{
_TempSql.Append(primaryCell.ColumnName + ",");
_TempSql2.Append(AutoID + ".nextval,");
}
break;
}
string sql = _TempSql.ToString().TrimEnd(',') + _TempSql2.ToString().TrimEnd(',') + ")";
switch (_action.dalHelper.dalType)
{
case DalType.MsSql:
case DalType.Sybase:
if (primaryCell.Struct.IsAutoIncrement && !_action.AllowInsertID && groupID == 1)
{
if (_action.dalHelper.dalType == DalType.Sybase)
{
sql = sql + " select @@IDENTITY as OutPutValue";
}
else
{
sql += " select cast(scope_Identity() as int) as OutPutValue";
}
}
else if (!primaryCell.IsNullOrEmpty)
{
sql += string.Format(" select '{0}' as OutPutValue", primaryCell.Value);
}
if (_action.AllowInsertID && !_action.dalHelper.isOpenTrans && primaryCell.Struct.IsAutoIncrement) //非批量操作时
{
sql = "set identity_insert " + SqlFormat.Keyword(TableName, _action.dalHelper.dalType) + " on " + sql + " set identity_insert " + SqlFormat.Keyword(TableName, _action.dalHelper.dalType) + " off";
}
break;
//if (!(Parent.AllowInsertID && !primaryCell.IsNull)) // 对于自行插入ID的，跳过，主操作会自动返回ID。
//{
// sql += ((groupID == 1 && (primaryCell.IsNull || primaryCell.ToString() == "0")) ? " select cast(scope_Identity() as int) as OutPutValue" : string.Format(" select '{0}' as OutPutValue", primaryCell.Value));
//}
//case DalType.Oracle:
// sql += string.Format("BEGIN;select {0}.currval from dual; END;", AutoID);
// break;
}
return(sql);
}
/// <summary>
/// 返回不包括Where条件的字符串
/// </summary>
/// <returns>结果如:Update tableName set Name=@Name,Value=@Value</returns>
internal string GetUpdateSql(object whereObj)
{
isCanDo = false;
StringBuilder _TempSql = new StringBuilder();
_TempSql.Append("Update " + SqlFormat.Keyword(TableName, _action.dalHelper.DataBaseType) + " set ");
if (!string.IsNullOrEmpty(updateExpression))
{
_TempSql.Append(SqlCompatible.Format(updateExpression, _action.DataBaseType) + ",");
updateExpression = null;//取完值后清除值。
isCanDo = true;
}
string editTime = GetEditTimeSql();//内部判断该字段没有值才会更新。
if (!string.IsNullOrEmpty(editTime))
{
_TempSql.Append(editTime);//自带尾,号
}
MDataCell cell = null;
for (int i = 0; i < _action.Data.Count; i++)
{
cell = _action.Data[i];
if (cell.Struct.IsPrimaryKey || cell.Struct.IsAutoIncrement)
{
continue;//跳过自增或主键列。
}
if (cell.State > 1 && (cell.Struct.IsCanNull || !cell.IsNull))
{
if (cell.Struct.SqlType == SqlDbType.Timestamp && (_action.DataBaseType == DataBaseType.MsSql || _action.DataBaseType == DataBaseType.Sybase))
{
//更新时间戳不允许更新。
continue;
}
if (_action.DataBaseType == DataBaseType.MsSql && cell.Struct.SqlTypeName != null && cell.Struct.SqlTypeName.EndsWith("hierarchyId"))
{
_TempSql.Append(SqlFormat.Keyword(cell.ColumnName, _action.DataBaseType) + "=HierarchyID::Parse('" + cell.StringValue + "')" + ",");
}
else
{
if (_action.DataBaseType == DataBaseType.FoxPro)
{
string value = "\"" + cell.StringValue + "\",";
if (cell.Struct.SqlType == SqlDbType.DateTime)
{
value = "{^" + cell.StringValue + "},";
}
//不支持参数化
_TempSql.Append(SqlFormat.Keyword(cell.ColumnName, _action.DataBaseType) + "=" + value);
}
else
{
object value = cell.Value;
DbType dbType = DataType.GetDbType(cell.Struct.SqlType.ToString(), _action.DataBaseType);
if (dbType == DbType.String && cell.StringValue == "")
{
if (_action.DataBaseType == DataBaseType.Oracle && !cell.Struct.IsCanNull)
{
value = " ";//Oracle not null 字段，不允许设置空值。
}
if (_action.DataBaseType == DataBaseType.MySql && cell.Struct.MaxSize == 36)
{
value = DBNull.Value;//MySql 的char36 会当成guid处理，不能为空，只能为null。
}
}
_action.dalHelper.AddParameters(_action.dalHelper.Pre + cell.ColumnName, value, dbType, cell.Struct.MaxSize, ParameterDirection.Input);
_TempSql.Append(SqlFormat.Keyword(cell.ColumnName, _action.DataBaseType) + "=" + _action.dalHelper.Pre + cell.ColumnName + ",");
}
}
isCanDo = true;
}
}
if (!isCanDo)
{
string err = AppConst.HR + "warn : " + TableName + " can't find the data can be updated!";
Log.Write(err, LogType.Warn);
_action.dalHelper.DebugInfo.Append(err);
}
//switch (_action.dalHelper.dalType)
//{
// case DalType.Oracle:
// case DalType.SQLite:
// _TempSql = _TempSql.Replace("[", "").Replace("]", "");
// break;
// case DalType.MySql:
// _TempSql = _TempSql.Replace("[", "`").Replace("]", "`");
// break;
//}
_TempSql = _TempSql.Remove(_TempSql.Length - 1, 1);
_TempSql.Append(" where " + FormatWhere(whereObj));
return(_TempSql.ToString());
}
