public virtual bool GetCachedTables(string defaultDb, DResult handler, DRows row, DRowsetHeader rh, uint flags)
{
ulong index = GetCallIndex();
lock (m_csCache)
{
//don't make m_csCache locked across calling SendRequest, which may lead to cross-SendRequest dead-lock
//in case a client asynchronously sends lots of requests without use of client side queue.
m_mapRowset[index] = new KeyValuePair <DRowsetHeader, DRows>(rh, row);
}
if (!SendRequest(DB_CONSTS.idGetCachedTables, defaultDb, flags, index, (ar) =>
{
int res, dbMS;
string errMsg;
ar.Load(out dbMS).Load(out res).Load(out errMsg);
lock (m_csCache)
{
m_ms = (UDB.tagManagementSystem)dbMS;
m_mapRowset.Remove(index);
}
if (handler != null)
{
handler(res, errMsg);
}
}))
{
lock (m_csCache)
{
m_mapRowset.Remove(index);
}
return(false);
}
return(true);
}
public bool PrimaryKeys(string CatalogName, string SchemaName, string TableName, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
return(DoMeta(idSQLPrimaryKeys, CatalogName, SchemaName, TableName, handler, row, rh, discarded));
}
public bool GetCachedTables(string defaultDb, DResult handler, DRows row, DRowsetHeader rh)
{
return(GetCachedTables(defaultDb, handler, row, rh, DB_CONSTS.ENABLE_TABLE_UPDATE_MESSAGES));
}
public bool Columns(string CatalogName, string SchemaName, string TableName, string ColumnName, DExecuteResult handler, DRows row, DRowsetHeader rh)
{
return(DoMeta(idSQLColumns, CatalogName, SchemaName, TableName, ColumnName, handler, row, rh, null));
}
public bool ProcedureColumns(string CatalogName, string SchemaName, string ProcName, string ColumnName, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
return(DoMeta(idSQLProcedureColumns, CatalogName, SchemaName, ProcName, ColumnName, handler, row, rh, discarded));
}
private bool DoMeta <T0, T1, T2>(ushort id, T0 t0, string s0, string s1, string s2, T1 t1, T2 t2, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
ulong index = GetCallIndex();
//don't make m_csDB locked across calling SendRequest, which may lead to client dead-lock
//in case a client asynchronously sends lots of requests without use of client side queue.
lock (m_csDB) {
m_mapRowset[index] = new KeyValuePair <DRowsetHeader, DRows>(rh, row);
}
if (!SendRequest(id, t0, s0, s1, s2, t1, t2, index, (ar) => {
ProcessODBC(handler, ar, id, index);
}, discarded, null))
{
lock (m_csDB) {
m_mapRowset.Remove(index);
}
return(false);
}
return(true);
}
public bool ColumnPrivileges(string CatalogName, string SchemaName, string TableName, string ColumnName, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
return(DoMeta(idSQLColumnPrivileges, CatalogName, SchemaName, TableName, ColumnName, handler, row, rh, discarded));
}
public bool Statistics(string CatalogName, string SchemaName, string TableName, ushort unique, ushort reserved, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
ulong index = GetCallIndex();
//don't make m_csDB locked across calling SendRequest, which may lead to client dead-lock
//in case a client asynchronously sends lots of requests without use of client side queue.
lock (m_csDB) {
m_mapRowset[index] = new KeyValuePair <DRowsetHeader, DRows>(rh, row);
}
if (!SendRequest(idSQLStatistics, CatalogName, SchemaName, TableName, unique, reserved, index, (ar) => {
ProcessODBC(handler, ar, idSQLStatistics, index);
}, discarded, null))
{
lock (m_csDB) {
m_mapRowset.Remove(index);
}
return(false);
}
return(true);
}
public bool ForeignKeys(string PKCatalogName, string PKSchemaName, string PKTableName, string FKCatalogName, string FKSchemaName, string FKTableName, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
return(DoMeta(idSQLForeignKeys, PKCatalogName, PKSchemaName, PKTableName, FKCatalogName, FKSchemaName, FKTableName, handler, row, rh, discarded));
}
public bool SpecialColumns(short identifierType, string CatalogName, string SchemaName, string TableName, short scope, short nullable, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
return(DoMeta(idSQLSpecialColumns, identifierType, CatalogName, SchemaName, TableName, scope, nullable, handler, row, rh, discarded));
}
public bool Statistics(string CatalogName, string SchemaName, string TableName, ushort unique, ushort reserved, DExecuteResult handler, DRows row, DRowsetHeader rh)
{
return(Statistics(CatalogName, SchemaName, TableName, unique, reserved, handler, row, rh, null));
}
public bool Procedures(string CatalogName, string SchemaName, string ProcName, DExecuteResult handler, DRows row, DRowsetHeader rh)
{
return(DoMeta(idSQLProcedures, CatalogName, SchemaName, ProcName, handler, row, rh, null));
}
public bool TablePrivileges(string CatalogName, string SchemaName, string TableName, DExecuteResult handler, DRows row, DRowsetHeader rh)
{
return(DoMeta(idSQLTablePrivileges, CatalogName, SchemaName, TableName, handler, row, rh, null));
}
private bool DoMeta <T0, T1, T2>(ushort id, T0 t0, string s0, string s1, string s2, T1 t1, T2 t2, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
ulong index = GetCallIndex();
//don't make m_csDB locked across calling SendRequest, which may lead to client dead-lock
//in case a client asynchronously sends lots of requests without use of client side queue.
lock (m_csDB)
{
m_mapRowset[index] = new KeyValuePair <DRowsetHeader, DRows>(rh, row);
}
if (!SendRequest(id, t0, s0, s1, s2, t1, t2, index, (ar) =>
{
ulong fail_ok;
int res;
string errMsg;
ar.Load(out res).Load(out errMsg).Load(out fail_ok);
lock (m_csDB)
{
m_lastReqId = id;
m_affected = 0;
m_dbErrCode = res;
m_dbErrMsg = errMsg;
m_mapRowset.Remove(index);
}
if (handler != null)
{
handler(this, res, errMsg, 0, fail_ok, null);
}
}, discarded, null))
{
lock (m_csDB)
{
m_mapRowset.Remove(index);
}
return(false);
}
return(true);
}
public bool Statistics(string CatalogName, string SchemaName, string TableName, ushort unique, ushort reserved, DExecuteResult handler, DRows row, DRowsetHeader rh, DDiscarded discarded)
{
ulong index = GetCallIndex();
//don't make m_csDB locked across calling SendRequest, which may lead to client dead-lock
//in case a client asynchronously sends lots of requests without use of client side queue.
lock (m_csDB)
{
m_mapRowset[index] = new KeyValuePair <DRowsetHeader, DRows>(rh, row);
}
if (!SendRequest(idSQLStatistics, CatalogName, SchemaName, TableName, unique, reserved, index, (ar) =>
{
ulong fail_ok;
int res;
string errMsg;
ar.Load(out res).Load(out errMsg).Load(out fail_ok);
lock (m_csDB)
{
m_lastReqId = idSQLStatistics;
m_affected = 0;
m_dbErrCode = res;
m_dbErrMsg = errMsg;
m_mapRowset.Remove(index);
}
if (handler != null)
{
handler(this, res, errMsg, 0, fail_ok, null);
}
}, discarded, null))
{
lock (m_csDB)
{
m_mapRowset.Remove(index);
}
return(false);
}
return(true);
}
public virtual bool PrimaryKeys(string CatalogName, string SchemaName, string TableName, DExecuteResult handler, DRows row, DRowsetHeader rh)
{
return(DoMeta(idSQLPrimaryKeys, CatalogName, SchemaName, TableName, handler, row, rh));
}
