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 DataTableViewerUI(IDataAccessPoint source, string sql, string caption)
{
InitializeComponent();
try
{
using (DbConnection con = DataAccessPortal.GetInstance().ExpectServer(source, DataAccessContext.DataExport).GetConnection())
{
con.Open();
using (var cmd = DatabaseCommandHelper.GetCommand(sql, con))
using (var da = DatabaseCommandHelper.GetDataAdapter(cmd))
{
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView1.DataSource = dt;
}
}
}
catch (Exception e)
{
ExceptionViewer.Show("Failed to connect to source " + source + " and execute SQL: " + Environment.NewLine + sql, e);
}
this.Text = caption;
}
public CohortIdentificationTaskExecution(IDataAccessPoint cacheServerIfAny, string countSQL, string cumulativeSQL, CancellationTokenSource cancellationTokenSource, int subQueries, int subqueriesCached, bool isResultsForRootContainer)
{
_cacheServerIfAny = cacheServerIfAny;
SubQueries = subQueries;
SubqueriesCached = subqueriesCached;
CountSQL = countSQL;
CumulativeSQL = cumulativeSQL;
_cancellationTokenSource = cancellationTokenSource;
IsResultsForRootContainer = isResultsForRootContainer;
}
public LogManager(IDataAccessPoint loggingServer) : this(DataAccessPortal.GetInstance().ExpectServer(loggingServer, DataAccessContext.Logging))
{
DataAccessPointIfAny = loggingServer;
}
private DbConnection GetConnectionToOtherTable(IDataAccessPoint tableInfo)
{
return(DataAccessPortal.GetInstance()
.ExpectServer(tableInfo, DataAccessContext.InternalDataProcessing)
.GetConnection());
}
/// <inheritdoc/>
public DiscoveredServer GetDistinctLiveDatabaseServer(DataAccessContext context, bool setInitialDatabase, out IDataAccessPoint distinctAccessPoint)
{
var tables = GetTableInfosIdeallyJustFromMainTables();
distinctAccessPoint = tables.FirstOrDefault();
return(DataAccessPortal.GetInstance().ExpectDistinctServer(tables, context, setInitialDatabase));
}
/// <summary>
/// Attempts to add <paramref name="point"/> to the collection returning true if it was successfully added. Returns false
/// if not added (e.g. if <see cref="SingleServer"/> is true and <paramref name="point"/> is to a different server/type).
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
public bool TryAdd(IDataAccessPoint point)
{
return(TryAddRange(new [] { point }));
}
/// <summary>
/// Adds the given <paramref name="point"/> to the collection. Throws InvalidOperationException if <see cref="SingleServer"/>
/// is set and the new <paramref name="point"/> is on a different server or <see cref="DatabaseType"/>
/// </summary>
/// <param name="point"></param>
public void Add(IDataAccessPoint point)
{
AddRange(new[] { point });
}
/// <summary>
/// Tests whether the supplied <paramref name="point"/> could be added to the current collection (without
/// actually adding it).
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
public bool AddWouldBePossible(IDataAccessPoint point)
{
return(Clone().TryAdd(point));
}
private IDataAccessPoint GetDistinct(IDataAccessPoint[] collection, DataAccessContext context, bool setInitialDatabase)
{
///////////////////////Exception handling///////////////////////////////////////////////
if (!collection.Any())
{
throw new Exception("No IDataAccessPoints were passed, so no connection string builder can be created");
}
IDataAccessPoint first = collection.First();
//There can be only one - server
foreach (IDataAccessPoint accessPoint in collection)
{
if (!first.Server.Equals(accessPoint.Server))
{
throw new ExpectedIdenticalStringsException("There was a mismatch in server names for data access points " + first + " and " + accessPoint + " server names must match exactly", first.Server, accessPoint.Server);
}
if (first.DatabaseType != accessPoint.DatabaseType)
{
throw new ExpectedIdenticalStringsException("There was a mismatch on DatabaseType for data access points " + first + " and " + accessPoint, first.DatabaseType.ToString(), accessPoint.DatabaseType.ToString());
}
if (setInitialDatabase)
{
if (string.IsNullOrWhiteSpace(first.Database))
{
throw new Exception("DataAccessPoint '" + first + "' does not have a Database specified on it");
}
var querySyntaxHelper = accessPoint.GetQuerySyntaxHelper();
var firstDbName = querySyntaxHelper.GetRuntimeName(first.Database);
var currentDbName = querySyntaxHelper.GetRuntimeName(accessPoint.Database);
if (!firstDbName.Equals(currentDbName))
{
throw new ExpectedIdenticalStringsException("All data access points must be into the same database, access points '" + first + "' and '" + accessPoint + "' are into different databases", firstDbName, currentDbName);
}
}
}
//There can be only one - credentials (but there might not be any)
var credentials = collection.Select(t => t.GetCredentialsIfExists(context)).ToArray();
//if there are credentials
if (credentials.Any(c => c != null))
{
if (credentials.Any(c => c == null))//all objects in collection must have a credentials if any of them do
{
throw new Exception("IDataAccessPoint collection could not agree whether to use Credentials or not " + Environment.NewLine
+ "Objects wanting to use Credentials" + string.Join(",", collection.Where(c => c.GetCredentialsIfExists(context) != null).Select(s => s.ToString())) + Environment.NewLine
+ "Objects not wanting to use Credentials" + string.Join(",", collection.Where(c => c.GetCredentialsIfExists(context) == null).Select(s => s.ToString())) + Environment.NewLine
);
}
else
//There can be only one - Username
if (credentials.Select(c => c.Username).Distinct().Count() != 1)
{
throw new Exception("IDataAccessPoint collection could not agree on a single Username to use to access the data under context " + context + " (Servers were " + string.Join("," + Environment.NewLine, collection.Select(c => c + " = " + c.Database + " - " + c.DatabaseType)) + ")");
}
else
//There can be only one - Password
if (credentials.Select(c => c.GetDecryptedPassword()).Distinct().Count() != 1)
{
throw new Exception("IDataAccessPoint collection could not agree on a single Password to use to access the data under context " + context + " (Servers were " + string.Join("," + Environment.NewLine, collection.Select(c => c + " = " + c.Database + " - " + c.DatabaseType)) + ")");
}
}
///////////////////////////////////////////////////////////////////////////////
//the bit that actually matters:
return(first);
}
public DiscoveredDatabase ExpectDatabase(IDataAccessPoint dataAccessPoint, DataAccessContext context)
{
return(GetServer(dataAccessPoint, context, true).GetCurrentDatabase());
}
public DiscoveredServer ExpectServer(IDataAccessPoint dataAccessPoint, DataAccessContext context, bool setInitialDatabase = true)
{
return(GetServer(dataAccessPoint, context, setInitialDatabase));
}
public LoggingDatabaseChecker(IDataAccessPoint target)
: this(DataAccessPortal.GetInstance().ExpectServer(target, DataAccessContext.Logging))
{
}
