public static SSystemDefaultsTable GetSystemDefaults()
{
SSystemDefaultsTable ReturnValue = null;
TDBTransaction ReadTransaction = null;
bool DBAccessCallSuccessful = false;
DBAccess.GDBAccessObj.GetNewOrExistingAutoReadTransaction(
IsolationLevel.ReadCommitted, TEnforceIsolationLevel.eilMinimum, ref ReadTransaction,
delegate
{
TServerBusyHelper.CoordinatedAutoRetryCall("Loading all SystemDefaults", ref DBAccessCallSuccessful,
delegate
{
ReturnValue = SSystemDefaultsAccess.LoadAll(ReadTransaction);
DBAccessCallSuccessful = true;
});
});
if (!DBAccessCallSuccessful)
{
throw new EDBAccessLackingCoordinationException("Loading of System Default failed: server was too busy!");
}
return(ReturnValue);
}
/// <summary>
/// Loads the System Defaults into the cached Typed DataTable.
///
/// The System Defaults are retrieved from the s_system_defaults table and are
/// put into a Typed DataTable that has the structure of this table.
///
/// </summary>
/// <returns>void</returns>
private void LoadSystemDefaultsTable()
{
TDataBase DBAccessObj = new Ict.Common.DB.TDataBase();
TDBTransaction ReadTransaction = null;
// Prevent other threads from obtaining a read lock on the cache table while we are (re)loading the cache table!
FReadWriteLock.AcquireWriterLock(SharedConstants.THREADING_WAIT_INFINITE);
try
{
if (FSystemDefaultsDT != null)
{
FSystemDefaultsDT.Clear();
}
try
{
DBAccessObj.EstablishDBConnection(TSrvSetting.RDMBSType,
TSrvSetting.PostgreSQLServer,
TSrvSetting.PostgreSQLServerPort,
TSrvSetting.PostgreSQLDatabaseName,
TSrvSetting.DBUsername,
TSrvSetting.DBPassword,
"",
"SystemDefaultsCache DB Connection");
DBAccessObj.BeginAutoReadTransaction(IsolationLevel.RepeatableRead, ref ReadTransaction,
delegate
{
FSystemDefaultsDT = SSystemDefaultsAccess.LoadAll(ReadTransaction);
});
}
finally
{
DBAccessObj.CloseDBConnection();
}
// Thread.Sleep(5000); uncomment this for debugging. This allows checking whether read access to FSystemDefaultsDT actually waits until we release the WriterLock in the finally block.
}
finally
{
// Other threads are now free to obtain a read lock on the cache table.
FReadWriteLock.ReleaseWriterLock();
}
}
/// <summary>
/// Loads the System Defaults into the cached Typed DataTable.
///
/// The System Defaults are retrieved from the s_system_defaults table and are
/// put into a Typed DataTable that has the structure of this table.
///
/// </summary>
/// <returns>void</returns>
private void LoadSystemDefaultsTable()
{
TDataBase DBAccessObj = DBAccess.Connect("LoadSystemDefaultsTable", FDataBase);
TDBTransaction ReadTransaction = new TDBTransaction();
if (FSystemDefaultsDT != null)
{
FSystemDefaultsDT.Clear();
}
DBAccessObj.ReadTransaction(ref ReadTransaction,
delegate
{
FSystemDefaultsDT = SSystemDefaultsAccess.LoadAll(ReadTransaction);
});
if (FDataBase == null)
{
DBAccessObj.CloseDBConnection();
}
}
/// <summary>
/// Loads the System Defaults into the cached Typed DataTable.
///
/// The System Defaults are retrieved from the s_system_defaults table and are
/// put into a Typed DataTable that has the structure of this table.
///
/// </summary>
/// <returns>void</returns>
private void LoadSystemDefaultsTable()
{
TDBTransaction ReadTransaction;
Boolean NewTransaction = false;
// Prevent other threads from obtaining a read lock on the cache table while we are (re)loading the cache table!
FReadWriteLock.AcquireWriterLock(SharedConstants.THREADING_WAIT_INFINITE);
try
{
if (FSystemDefaultsDT != null)
{
FSystemDefaultsDT.Clear();
}
try
{
ReadTransaction = DBAccess.GDBAccessObj.GetNewOrExistingTransaction(IsolationLevel.RepeatableRead,
TEnforceIsolationLevel.eilMinimum,
out NewTransaction);
FSystemDefaultsDT = SSystemDefaultsAccess.LoadAll(ReadTransaction);
}
finally
{
if (NewTransaction)
{
DBAccess.GDBAccessObj.CommitTransaction();
TLogging.LogAtLevel(7, "TSystemDefaultsCache.LoadSystemDefaultsTable: commited own transaction.");
}
}
// Thread.Sleep(5000); uncomment this for debugging. This allows checking whether read access to FSystemDefaultsDT actually waits until we release the WriterLock in the finally block.
}
finally
{
// Other threads are now free to obtain a read lock on the cache table.
FReadWriteLock.ReleaseWriterLock();
}
}
public static SSystemDefaultsTable GetSystemDefaults()
{
SSystemDefaultsTable Ret;
TDBTransaction ReadTransaction;
Boolean NewTransaction = false;
try
{
ReadTransaction = DBAccess.GDBAccessObj.GetNewOrExistingTransaction(IsolationLevel.ReadCommitted,
TEnforceIsolationLevel.eilMinimum,
out NewTransaction);
Ret = SSystemDefaultsAccess.LoadAll(ReadTransaction);
}
finally
{
if (NewTransaction)
{
DBAccess.GDBAccessObj.RollbackTransaction();
}
}
return(Ret);
}
public static void GetData(string ATablename, TSearchCriteria[] ASearchCriteria, out TTypedDataTable AResultTable,
TDBTransaction AReadTransaction)
{
AResultTable = null;
string context = string.Format("GetData {0}", SharedConstants.MODULE_ACCESS_MANAGER);
// check access permissions for the current user
TModuleAccessManager.CheckUserPermissionsForTable(ATablename, TTablePermissionEnum.eCanRead);
// TODO: auto generate
if (ATablename == AApSupplierTable.GetTableDBName())
{
AResultTable = AApSupplierAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == AApDocumentTable.GetTableDBName())
{
AResultTable = AApDocumentAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == ATransactionTypeTable.GetTableDBName())
{
AResultTable = ATransactionTypeAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == ACurrencyTable.GetTableDBName())
{
AResultTable = ACurrencyAccess.LoadAll(AReadTransaction);
}
else if (ATablename == ADailyExchangeRateTable.GetTableDBName())
{
AResultTable = ADailyExchangeRateAccess.LoadAll(AReadTransaction);
}
else if (ATablename == ACorporateExchangeRateTable.GetTableDBName())
{
AResultTable = ACorporateExchangeRateAccess.LoadAll(AReadTransaction);
}
else if (ATablename == ACurrencyLanguageTable.GetTableDBName())
{
AResultTable = ACurrencyLanguageAccess.LoadAll(AReadTransaction);
}
else if (ATablename == AFeesPayableTable.GetTableDBName())
{
AResultTable = AFeesPayableAccess.LoadAll(AReadTransaction);
}
else if (ATablename == AFeesReceivableTable.GetTableDBName())
{
AResultTable = AFeesReceivableAccess.LoadAll(AReadTransaction);
}
else if (ATablename == AAnalysisTypeTable.GetTableDBName())
{
AResultTable = AAnalysisTypeAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == AGiftBatchTable.GetTableDBName())
{
AResultTable = AGiftBatchAccess.LoadAll(AReadTransaction);
}
else if (ATablename == AJournalTable.GetTableDBName())
{
AResultTable = AJournalAccess.LoadAll(AReadTransaction);
}
else if (ATablename == ALedgerTable.GetTableDBName())
{
AResultTable = ALedgerAccess.LoadAll(AReadTransaction);
}
else if (ATablename == MExtractMasterTable.GetTableDBName())
{
if (ASearchCriteria == null)
{
AResultTable = MExtractMasterAccess.LoadAll(AReadTransaction);
}
else
{
AResultTable = MExtractMasterAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
}
else if (ATablename == MExtractTable.GetTableDBName())
{
// it does not make sense to load ALL extract rows for all extract masters so search criteria needs to be set
if (ASearchCriteria != null)
{
AResultTable = MExtractAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
}
else if (ATablename == PcAttendeeTable.GetTableDBName())
{
AResultTable = PcAttendeeAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == PcConferenceCostTable.GetTableDBName())
{
AResultTable = PcConferenceCostAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == PcEarlyLateTable.GetTableDBName())
{
AResultTable = PcEarlyLateAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == PcSupplementTable.GetTableDBName())
{
AResultTable = PcSupplementAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == PcDiscountTable.GetTableDBName())
{
AResultTable = PcDiscountAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == PCountryTable.GetTableDBName())
{
AResultTable = PCountryAccess.LoadAll(AReadTransaction);
}
else if (ATablename == PFormTable.GetTableDBName())
{
string[] columns = TTypedDataTable.GetColumnStringList(PFormTable.TableId);
StringCollection fieldList = new StringCollection();
for (int i = 0; i < columns.Length; i++)
{
// Do not load the template document - we don't display it and it is big!
if (columns[i] != PFormTable.GetTemplateDocumentDBName())
{
fieldList.Add(columns[i]);
}
}
AResultTable = PFormAccess.LoadAll(fieldList, AReadTransaction);
}
else if (ATablename == PInternationalPostalTypeTable.GetTableDBName())
{
AResultTable = PInternationalPostalTypeAccess.LoadAll(AReadTransaction);
}
else if (ATablename == PtApplicationTypeTable.GetTableDBName())
{
AResultTable = PtApplicationTypeAccess.LoadAll(AReadTransaction);
}
else if (ATablename == PFormalityTable.GetTableDBName())
{
AResultTable = PFormalityAccess.LoadAll(AReadTransaction);
}
else if (ATablename == PMailingTable.GetTableDBName())
{
AResultTable = PMailingAccess.LoadAll(AReadTransaction);
}
else if (ATablename == PPartnerGiftDestinationTable.GetTableDBName())
{
AResultTable = PPartnerGiftDestinationAccess.LoadUsingTemplate(ASearchCriteria, AReadTransaction);
}
else if (ATablename == PmDocumentTypeTable.GetTableDBName())
{
AResultTable = PmDocumentTypeAccess.LoadAll(AReadTransaction);
}
else if (ATablename == SGroupTable.GetTableDBName())
{
TSecurityChecks.CheckUserModulePermissions(SharedConstants.PETRAMODULE_SYSADMIN, context);
AResultTable = SGroupAccess.LoadAll(AReadTransaction);
}
else if (ATablename == SSystemDefaultsTable.GetTableDBName())
{
TSecurityChecks.CheckUserModulePermissions(SharedConstants.PETRAMODULE_SYSADMIN, context);
AResultTable = SSystemDefaultsAccess.LoadAll(AReadTransaction);
}
else if (ATablename == SSystemDefaultsGuiTable.GetTableDBName())
{
AResultTable = SSystemDefaultsGuiAccess.LoadAll(AReadTransaction);
}
else
{
throw new Exception("TCommonDataReader.GetData: unknown table " + ATablename);
}
// Accept row changes here so that the Client gets 'unmodified' rows
AResultTable.AcceptChanges();
}
/// <summary>
/// Stores a System Default in the DB. If it was already there it gets updated, if it wasn't there it gets added.
/// </summary>
/// <remarks>The change gets reflected in the System Defaults Cache the next time the System Defaults Cache
/// gets accessed.</remarks>
/// <param name="AKey">Name of the System Default.</param>
/// <param name="AValue">Value of the System Default.</param>
/// <param name="AAdded">True if the System Default got added, false if it already existed.</param>
/// <remarks>SystemDefault Names are not case sensitive.</remarks>
public void SetSystemDefault(String AKey, String AValue, out bool AAdded)
{
Boolean NewTransaction = false;
Boolean ShouldCommit = false;
SSystemDefaultsTable SystemDefaultsDT;
try
{
TDBTransaction ReadWriteTransaction = DBAccess.GDBAccessObj.GetNewOrExistingTransaction(
IsolationLevel.ReadCommitted, TEnforceIsolationLevel.eilMinimum, out NewTransaction);
SystemDefaultsDT = SSystemDefaultsAccess.LoadAll(ReadWriteTransaction);
// This will find the row that matches a case-insensitive search of the table primary keys
SystemDefaultsDT.CaseSensitive = false; // It is anyway
SSystemDefaultsRow match = (SSystemDefaultsRow)SystemDefaultsDT.Rows.Find(AKey);
if (match != null)
{
// I already have this System Default in the DB --> simply update the Value in the DB.
// (This will often be the case!)
match.DefaultValue = AValue;
AAdded = false;
}
else
{
// The System Default isn't in the DB yet --> store it in the DB.
var SystemDefaultsDR = SystemDefaultsDT.NewRowTyped(true);
SystemDefaultsDR.DefaultCode = AKey;
SystemDefaultsDR.DefaultDescription = "Created in OpenPetra";
SystemDefaultsDR.DefaultValue = AValue;
SystemDefaultsDT.Rows.Add(SystemDefaultsDR);
AAdded = true;
}
SSystemDefaultsAccess.SubmitChanges(SystemDefaultsDT, ReadWriteTransaction);
ShouldCommit = true;
}
catch (Exception Exc)
{
TLogging.Log(
"TSystemDefaultCache.SetSystemDefault: An Exception occured during the saving of the System Default '" + AKey +
"'. Value to be saved: + '" + AValue + "'" +
Environment.NewLine + Exc.ToString());
ShouldCommit = false;
throw;
}
finally
{
if (NewTransaction)
{
if (ShouldCommit)
{
DBAccess.GDBAccessObj.CommitTransaction();
// We need to ensure that the next time the System Defaults Caches gets accessed it is refreshed from the DB!!!
// Obtain thread-safe access to the FTableCached Field to prevent two (or more) Threads from getting a different
// FTableCached value!
lock (FTableCachedLockCookie)
{
FTableCached = false;
}
}
else
{
DBAccess.GDBAccessObj.RollbackTransaction();
}
}
}
}
/// <summary>
/// Stores a System Default in the DB. If it was already there it gets updated, if it wasn't there it gets added.
/// </summary>
/// <remarks>The change gets reflected in the System Defaults Cache the next time the System Defaults Cache
/// gets accessed.</remarks>
/// <param name="AKey">Name of the System Default.</param>
/// <param name="AValue">Value of the System Default.</param>
/// <param name="AAdded">True if the System Default got added, false if it already existed.</param>
/// <remarks>SystemDefault Names are not case sensitive.</remarks>
public void SetSystemDefault(String AKey, String AValue, out bool AAdded)
{
TDataBase DBConnectionObj = null;
TDBTransaction WriteTransaction = null;
Boolean SubmissionOK = false;
SSystemDefaultsTable SystemDefaultsDT;
Boolean Added = false;
try
{
// Open a separate DB Connection...
DBConnectionObj = DBAccess.SimpleEstablishDBConnection("SetSystemDefault");
// ...and start a DB Transaction on that separate DB Connection
DBConnectionObj.BeginAutoTransaction(IsolationLevel.ReadCommitted, ref WriteTransaction, ref SubmissionOK,
"SetSystemDefault", delegate
{
SystemDefaultsDT = SSystemDefaultsAccess.LoadAll(WriteTransaction);
// This will find the row that matches a case-insensitive search of the table primary keys
SystemDefaultsDT.CaseSensitive = false; // It is anyway
SSystemDefaultsRow match = (SSystemDefaultsRow)SystemDefaultsDT.Rows.Find(AKey);
if (match != null)
{
// I already have this System Default in the DB --> simply update the Value in the DB.
// (This will often be the case!)
match.DefaultValue = AValue;
Added = false;
}
else
{
// The System Default isn't in the DB yet --> store it in the DB.
var SystemDefaultsDR = SystemDefaultsDT.NewRowTyped(true);
SystemDefaultsDR.DefaultCode = AKey;
SystemDefaultsDR.DefaultDescription = "Created in OpenPetra";
SystemDefaultsDR.DefaultValue = AValue;
SystemDefaultsDT.Rows.Add(SystemDefaultsDR);
Added = true;
}
SSystemDefaultsAccess.SubmitChanges(SystemDefaultsDT, WriteTransaction);
SubmissionOK = true;
});
AAdded = Added;
}
catch (Exception Exc)
{
TLogging.Log(
"TSystemDefaultCache.SetSystemDefault: An Exception occured during the saving of the System Default '" + AKey +
"'. Value to be saved: + '" + AValue + "'" +
Environment.NewLine + Exc.ToString());
throw;
}
finally
{
if (SubmissionOK)
{
// We need to ensure that the next time the System Defaults Caches gets accessed it is refreshed from the DB!!!
// Obtain thread-safe access to the FTableCached Field to prevent two (or more) Threads from getting a different
// FTableCached value!
lock (FTableCachedLockCookie)
{
FTableCached = false;
}
}
if (DBConnectionObj != null)
{
DBConnectionObj.CloseDBConnection();
}
}
}
/// <summary>
/// Stores a System Default in the DB. If it was already there it gets updated, if it wasn't there it gets added.
/// </summary>
/// <remarks>The change gets reflected in the System Defaults Cache the next time the System Defaults Cache
/// gets accessed.</remarks>
/// <param name="AKey">Name of the System Default.</param>
/// <param name="AValue">Value of the System Default.</param>
/// <param name="AAdded">True if the System Default got added, false if it already existed.</param>
/// <param name="ADataBase"></param>
/// <remarks>SystemDefault Names are not case sensitive.</remarks>
public void SetSystemDefault(String AKey, String AValue, out bool AAdded, TDataBase ADataBase = null)
{
TDataBase DBConnectionObj = null;
TDBTransaction WriteTransaction = new TDBTransaction();
bool SubmissionOK = false;
SSystemDefaultsTable SystemDefaultsDT;
Boolean Added = false;
try
{
// Open a separate DB Connection...
DBConnectionObj = DBAccess.Connect("SetSystemDefault", ADataBase);
// ...and start a DB Transaction on that separate DB Connection
DBConnectionObj.WriteTransaction(ref WriteTransaction, ref SubmissionOK,
delegate
{
SystemDefaultsDT = SSystemDefaultsAccess.LoadAll(WriteTransaction);
// This will find the row that matches a case-insensitive search of the table primary keys
SystemDefaultsDT.CaseSensitive = false; // It is anyway
SSystemDefaultsRow match = (SSystemDefaultsRow)SystemDefaultsDT.Rows.Find(AKey);
if (match != null)
{
// I already have this System Default in the DB --> simply update the Value in the DB.
// (This will often be the case!)
match.DefaultValue = AValue;
Added = false;
}
else
{
// The System Default isn't in the DB yet --> store it in the DB.
var SystemDefaultsDR = SystemDefaultsDT.NewRowTyped(true);
SystemDefaultsDR.DefaultCode = AKey;
SystemDefaultsDR.DefaultDescription = "Created in OpenPetra";
SystemDefaultsDR.DefaultValue = AValue;
SystemDefaultsDT.Rows.Add(SystemDefaultsDR);
Added = true;
}
SSystemDefaultsAccess.SubmitChanges(SystemDefaultsDT, WriteTransaction);
SubmissionOK = true;
});
AAdded = Added;
}
catch (Exception Exc)
{
TLogging.Log(
"TSystemDefaultCache.SetSystemDefault: An Exception occured during the saving of the System Default '" + AKey +
"'. Value to be saved: + '" + AValue + "'" +
Environment.NewLine + Exc.ToString());
throw;
}
finally
{
if (ADataBase == null)
{
DBConnectionObj.CloseDBConnection();
}
if (SubmissionOK && (FSystemDefaultsDT != null))
{
// We need to ensure that the next time the System Defaults Caches gets accessed it is refreshed from the DB!!!
FSystemDefaultsDT.Clear();
FSystemDefaultsDT = null;
}
}
}
