public SyncLogReplica()
{
LogItems = new SyncLogItemList();
Tables = new SyncTableList();
DataSet = new DataSet();
DataSet.RemotingFormat = SerializationFormat.Binary;
Created = DateTime.Now;
}
public override SyncTableRelationList GetRelationsForTables(SyncTableList list, SyncDatabase db)
{
string sql = @"select rc.rdb$constraint_name constraint_name, rc.rdb$relation_name child_table,
rc2.rdb$relation_name parent_table,
sg.rdb$field_name child_column, sg2.rdb$field_name parent_column
from rdb$relation_constraints rc
left join rdb$ref_constraints rr on rr.rdb$constraint_name = rc.rdb$constraint_name
left join rdb$relation_constraints rc2 on rc2.rdb$constraint_name = rr.rdb$const_name_uq
left join rdb$index_segments sg on sg.rdb$index_name = rc.rdb$index_name
left join rdb$index_segments sg2 on sg2.rdb$index_name = rc2.rdb$index_name
where rc.rdb$constraint_type = 'FOREIGN KEY'
union all
select '', table_child, table_parent, '', ''
from sync_table_dep
";
SyncTableRelationList result = new SyncTableRelationList();
using (FbCommand cmd = db.CreateCommand() as FbCommand)
{
cmd.CommandText = sql;
using (IDataReader reader = cmd.ExecuteReader())
while (reader.Read())
{
SyncTableRelation rel = new SyncTableRelation();
rel.ParentTable = reader["PARENT_TABLE"].ToString().Trim();
rel.ChildTable = reader["CHILD_TABLE"].ToString().Trim();
rel.ParentColumns = new string [] { reader["PARENT_COLUMN"].ToString().Trim() };
rel.ChildColumns = new string[] { reader["CHILD_COLUMN"].ToString().Trim() };
result.Add(rel);
}
}
return(result);
}
public abstract void UpgradeAndDisableTriggers(SyncDatabase db, SyncTableList tables);
public abstract SyncTableRelationList GetRelationsForTables(SyncTableList list, SyncDatabase db);
public override void UpgradeAndDisableTriggers(SyncDatabase db, SyncTableList tables)
{
UpgradeTriggers(db, tables);
ExecSql(db, "select rdb$set_context('USER_TRANSACTION', 'TRG_DISABLE', '1') from rdb$database");
}
private void UpgradeTriggers(SyncDatabase db, SyncTableList tables)
{
db.Log.Debug(db.FMsg("Выполняется обновление текста триггеров..."));
StringBuilder sb = new StringBuilder(100);
foreach (SyncTable t in tables)
{
if (sb.Length > 0)
{
sb.Append(",");
}
sb.Append("'");
sb.Append(t.TableName);
sb.Append("'");
}
if (sb.Length == 0)
{
return;
}
string triggers_disable_hook = "/*TRG_DIS*/if (rdb$get_context('USER_TRANSACTION', 'TRG_DISABLE') is not null) then exit;";
// для триггеров архивации другая строчка (их не отключаем
string triggers_disable_hook_arc = "/*TRG_DIS*/if (rdb$get_context('USER_TRANSACTION', 'TRG_DISABLE_ARC') is not null) then exit;";
string sql = string.Format(@"select * from rdb$triggers
where rdb$system_flag = 0 and rdb$trigger_name not like 'CHECK%' and rdb$relation_name <> 'SYNC_LOG' and
rdb$relation_name in ('', {0})", sb.ToString());
FbTransaction trg_trans = db.Transaction as FbTransaction;
//(db.Connection as FbConnection).BeginTransaction(FbTransactionOptions.NoWait | FbTransactionOptions.ReadCommitted);
using (FbCommand cmd = new FbCommand(string.Empty, db.Connection as FbConnection, trg_trans))
{
cmd.CommandText = sql;
using (FbDataReader reader = cmd.ExecuteReader())
while (reader.Read())
{
string trigger_name = reader["RDB$TRIGGER_NAME"].ToString().Trim();
string trigger_source = reader["RDB$TRIGGER_SOURCE"].ToString().Trim();
string l_trigger_source = trigger_source.ToLower();
string trg_hook = triggers_disable_hook;
if (trigger_name.StartsWith("T_SYNC$"))
{
trg_hook = triggers_disable_hook_arc;
}
// закладка для кредитного клиента
if ((db.Connection as FbConnection).ConnectionString.ToLower().Contains("kredclient") &&
trigger_source.ToLower().Contains("sp_write_log"))
{
trg_hook = triggers_disable_hook_arc;
}
if (!l_trigger_source.Contains(trg_hook.ToLower()))
{
int pos_begin = l_trigger_source.IndexOf("begin");
if (pos_begin >= 0)
{
trigger_source = trigger_source.Insert(pos_begin + 5, "\r\n" + trg_hook);
if ((trg_hook == triggers_disable_hook_arc) && trigger_source.Contains(triggers_disable_hook))
{
trigger_source = trigger_source.Replace(triggers_disable_hook, string.Empty);
}
using (FbCommand cmd_alter = db.CreateCommand() as FbCommand)
{
cmd_alter.CommandText = string.Format("ALTER TRIGGER {0}\r\n{1}",
trigger_name, trigger_source);
try
{
cmd_alter.ExecuteNonQuery();
trg_trans.CommitRetaining();
}
catch (Exception ex)
{
trg_trans.RollbackRetaining();
db.Log.Warn(string.Format(db.FMsg("Ошибка при обновлении текста триггера ({0}): {1}"),
trigger_name, ex.Message));
}
}
}
}
}
trg_trans.CommitRetaining();
}
db.Log.Debug(db.FMsg("Обновление текста триггеров выполнено."));
}
