private DiscoveredServer GetServer(IDataAccessPoint dataAccessPoint, DataAccessContext context, bool setInitialDatabase)
{
IDataAccessCredentials credentials = dataAccessPoint.GetCredentialsIfExists(context);
if (string.IsNullOrWhiteSpace(dataAccessPoint.Server))
{
throw new NullReferenceException("Could not get connection string because Server was null on dataAccessPoint '" + dataAccessPoint + "'");
}
string dbName = null;
if (setInitialDatabase)
{
if (!string.IsNullOrWhiteSpace(dataAccessPoint.Database))
{
dbName = dataAccessPoint.GetQuerySyntaxHelper().GetRuntimeName(dataAccessPoint.Database);
}
else
{
throw new Exception("Could not get server with setInitialDatabase=true because no Database was set on IDataAccessPoint " + dataAccessPoint);
}
}
var server = new DiscoveredServer(dataAccessPoint.Server, dbName, dataAccessPoint.DatabaseType, credentials?.Username, credentials?.GetDecryptedPassword());
return(server);
}
//public ITicketingSystem Create(string )
public ITicketingSystem Create(string typeName, string url, IDataAccessCredentials credentials)
{
if (string.IsNullOrWhiteSpace(typeName))
{
throw new NullReferenceException("Type name was blank, cannot create ITicketingSystem");
}
return(_repository.MEF.CreateA <ITicketingSystem>(typeName, new TicketingSystemConstructorParameters(url, credentials)));
}
public ITicketingSystem CreateIfExists(TicketingSystemConfiguration ticketingSystemConfiguration)
{
//if there is no ticketing system
if (ticketingSystemConfiguration == null)
{
return(null);
}
//if there is no Type
if (string.IsNullOrWhiteSpace(ticketingSystemConfiguration.Type))
{
return(null);
}
IDataAccessCredentials creds = null;
//if there are credentials create with those (otherwise create with null credentials)
if (ticketingSystemConfiguration.DataAccessCredentials_ID != null)
{
creds = _repository.GetObjectByID <DataAccessCredentials>((int)ticketingSystemConfiguration.DataAccessCredentials_ID);
}
return(Create(ticketingSystemConfiguration.Type, ticketingSystemConfiguration.Url, creds));
}
/// <summary>
///
/// </summary>
/// <exception cref="SynchronizationFailedException">Could not figure out how to resolve a synchronization problem between the TableInfo and the underlying table structure</exception>
/// <param name="notifier">Called every time a fixable problem is detected, method must return true or false. True = apply fix, False = don't - but carry on checking</param>
public bool Synchronize(ICheckNotifier notifier)
{
bool IsSynched = true;
//server exists and is accessible?
try
{
_toSyncTo.TestConnection();
}
catch (Exception e)
{
throw new SynchronizationFailedException("Could not connect to " + _toSyncTo, e);
}
//database exists?
var expectedDatabase = _toSyncTo.ExpectDatabase(_tableToSync.GetDatabaseRuntimeName());
if (!expectedDatabase.Exists())
{
throw new SynchronizationFailedException("Server did not contain a database called " + _tableToSync.GetDatabaseRuntimeName());
}
//identify new columns
DiscoveredColumn[] liveColumns;
DiscoveredTable expectedTable;
if (_tableToSync.IsTableValuedFunction)
{
expectedTable = expectedDatabase.ExpectTableValuedFunction(_tableToSync.GetRuntimeName(), _tableToSync.Schema);
if (!expectedTable.Exists())
{
throw new SynchronizationFailedException("Database " + expectedDatabase + " did not contain a TABLE VALUED FUNCTION called " + _tableToSync.GetRuntimeName());
}
}
else
{
//table exists?
expectedTable = expectedDatabase.ExpectTable(_tableToSync.GetRuntimeName(), _tableToSync.Schema, _tableToSync.IsView ? TableType.View:TableType.Table);
if (!expectedTable.Exists())
{
throw new SynchronizationFailedException("Database " + expectedDatabase + " did not contain a table called " + _tableToSync.GetRuntimeName());
}
}
try
{
liveColumns = expectedTable.DiscoverColumns();
}
catch (SqlException e)
{
throw new Exception("Failed to enumerate columns in " +
_toSyncTo +
" (we were attempting to synchronize the TableInfo " + _tableToSync + " (ID=" + _tableToSync.ID + "). Check the inner exception for specifics", e);
}
ColumnInfo[] catalogueColumns = _tableToSync.ColumnInfos.ToArray();
IDataAccessCredentials credentialsIfExists = _tableToSync.GetCredentialsIfExists(DataAccessContext.InternalDataProcessing);
string pwd = null;
string usr = null;
if (credentialsIfExists != null)
{
usr = credentialsIfExists.Username;
pwd = credentialsIfExists.GetDecryptedPassword();
}
ITableInfoImporter importer;
//for importing new stuff
if (_tableToSync.IsTableValuedFunction)
{
importer = new TableValuedFunctionImporter(_repository, (DiscoveredTableValuedFunction)expectedTable);
}
else
{
importer = new TableInfoImporter(_repository, _toSyncTo.Name, _toSyncTo.GetCurrentDatabase().GetRuntimeName(), _tableToSync.GetRuntimeName(), _tableToSync.DatabaseType, username: usr, password: pwd, importFromSchema: _tableToSync.Schema, importTableType: _tableToSync.IsView ? TableType.View:TableType.Table);
}
DiscoveredColumn[] newColumnsInLive =
liveColumns.Where(
live => !catalogueColumns.Any(columnInfo =>
columnInfo.GetRuntimeName()
.Equals(live.GetRuntimeName()))).ToArray();
//there are new columns in the live database that are not in the Catalogue
if (newColumnsInLive.Any())
{
//see if user wants to add missing columns
bool addMissingColumns = notifier.OnCheckPerformed(new CheckEventArgs("The following columns are missing from the TableInfo:" + string.Join(",", newColumnsInLive.Select(c => c.GetRuntimeName())), CheckResult.Fail, null, "The ColumnInfos will be created and added to the TableInfo"));
List <ColumnInfo> added = new List <ColumnInfo>();
if (addMissingColumns)
{
foreach (DiscoveredColumn missingColumn in newColumnsInLive)
{
added.Add(importer.CreateNewColumnInfo(_tableToSync, missingColumn));
}
ForwardEngineerExtractionInformationIfAppropriate(added, notifier);
}
else
{
IsSynched = false;
}
}
//See if we need to delete any ColumnInfos
ColumnInfo[] columnsInCatalogueButSinceDisapeared =
catalogueColumns
.Where(columnInfo => !liveColumns.Any( //there are not any
c => columnInfo.GetRuntimeName().Equals(c.GetRuntimeName())) //columns with the same name between discovery/columninfo
).ToArray();
if (columnsInCatalogueButSinceDisapeared.Any())
{
foreach (var columnInfo in columnsInCatalogueButSinceDisapeared)
{
bool deleteExtraColumnInfos = notifier.OnCheckPerformed(new CheckEventArgs("The ColumnInfo " + columnInfo.GetRuntimeName() + " no longer appears in the live table.", CheckResult.Fail, null, "Delete ColumnInfo " + columnInfo.GetRuntimeName()));
if (deleteExtraColumnInfos)
{
columnInfo.DeleteInDatabase();
}
else
{
IsSynched = false;
}
}
}
_tableToSync.ClearAllInjections();
if (IsSynched)
{
IsSynched = SynchronizeTypes(notifier, liveColumns);
}
if (IsSynched && !_tableToSync.IsTableValuedFunction)//table valued functions don't have primary keys!
{
IsSynched = SynchronizeField(liveColumns, _tableToSync.ColumnInfos, notifier, "IsPrimaryKey");
}
if (IsSynched && !_tableToSync.IsTableValuedFunction)//table valued functions don't have autonum
{
IsSynched = SynchronizeField(liveColumns, _tableToSync.ColumnInfos, notifier, "IsAutoIncrement");
}
if (IsSynched)
{
IsSynched = SynchronizeField(liveColumns, _tableToSync.ColumnInfos, notifier, "Collation");
}
if (IsSynched && _tableToSync.IsTableValuedFunction)
{
IsSynched = SynchronizeParameters((TableValuedFunctionImporter)importer, notifier);
}
_tableToSync.ClearAllInjections();
//get list of primary keys from underlying table
return(IsSynched);
}
public TicketingSystemConstructorParameters(string url, IDataAccessCredentials credentials)
{
Url = url;
Credentials = credentials;
}
