private void BuildSequences()
{
if (!_driver.Supports(DbFeatures.Sequences))
{
return;
}
foreach (var m in _entityModel.App.Modules)
{
foreach (var seq in m.Sequences)
{
var dbSeqInfo = new DbSequenceInfo(this._dbModel, seq);
_dbModel.Sequences.Add(dbSeqInfo);
}
}
}//method
public bool CanProcessMany(DbUpdateTableGroup group)
{
if (group.Records.Count <= 1)
{
return(false);
}
switch (group.Operation)
{
case LinqOperation.Delete:
return(group.Table.PrimaryKey.KeyColumns.Count == 1);
case LinqOperation.Insert:
if (!_driver.Supports(DbFeatures.InsertMany))
{
return(false);
}
if (group.Table.Entity.Flags.IsSet(EntityFlags.HasIdentity | EntityFlags.HasRowVersion))
{
return(false);
}
return(true);
default:
return(false);
}
}
public DbModelConfig(DbDriver driver, DbOptions options = DbOptions.Default,
DbNamingPolicy namingPolicy = null, IDictionary <string, string> schemaMappings = null)
{
Util.Check(driver != null, "Driver parameter may not be null.");
Driver = driver;
Options = options;
NamingPolicy = namingPolicy ?? new DbNamingPolicy();
//import schema mappings
if (schemaMappings != null)
{
foreach (var de in schemaMappings)
{
SchemaMappings[de.Key] = de.Value;
}
}
//Verify options
if (!Driver.Supports(DbFeatures.StoredProcedures))
{
Options &= ~DbOptions.UseStoredProcs;
}
//Batch mode is not available without stored procedures
if (!Options.IsSet(DbOptions.UseStoredProcs))
{
Options &= ~DbOptions.UseBatchMode;
}
}
private void BuildCrudCommands()
{
bool useSPs = _driver.Supports(DbFeatures.StoredProcedures) && _config.Options.IsSet(DbOptions.UseStoredProcs);
foreach (var entityCommand in _entityModel.GetCrudCommands())
{
if (entityCommand.TargetEntityInfo.Kind == EntityKind.View && !_dbModel.Driver.Supports(DbFeatures.Views))
{
continue;
}
// We try to match commands by descrTag; it sometimes happens that two entity commands are identical and have the same underlying db command
var descrTag = _dbSqlBuilder.GetDbCommandDescriptiveTag(entityCommand);
var cmd = _dbModel.GetCommandByTag(descrTag);
if (cmd != null) //if it exists already, register it with other entity command
{
_dbModel.RegisterDbObject(entityCommand, cmd);
continue;
}
cmd = BuildCommand(_dbSqlBuilder, entityCommand);
if (cmd == null)
{
continue;
}
if (useSPs && !cmd.IsTemplatedSql)
{
_dbSqlBuilder.ConvertToStoredProc(cmd);
cmd.CommandType = CommandType.StoredProcedure;
}
}
}
//Prepares for full run with a specified server
public static void Reset(DbServerType serverType)
{
DeleteLocalLogFiles();
InitAppConfig();
ServerType = serverType;
if (ServerType == DbServerType.SQLite)
{
DeleteSqliteDbFile(); //it will be created on connect, creat-option in conn string
}
Driver = DataUtility.CreateDriver(ServerType);
//Load connection string
var connStringName = ServerType.ToString() + "ConnectionString";
// For SQLite we can use either provider
var useMsSqlite = AppConfig["UseMsSqliteProvider"] == "true";
if (ServerType == DbServerType.SQLite && useMsSqlite)
{
var sqliteDriver = (Data.SQLite.SQLiteDbDriver)Driver;
sqliteDriver.ConnectionFactory = (s) => new Microsoft.Data.Sqlite.SqliteConnection(s);
sqliteDriver.CommandFactory = () => new Microsoft.Data.Sqlite.SqliteCommand();
connStringName += "_MS";
}
var connString = AppConfig[connStringName];
Util.Check(!string.IsNullOrEmpty(connString), "Connection string not found for key: {0}.", connStringName);
if (connString.Contains("{bin}"))
{
var asmPath = Assembly.GetExecutingAssembly().Location;
var binFolder = Path.GetDirectoryName(asmPath);
connString = connString.Replace("{bin}", binFolder);
}
ConnectionString = connString;
DbOptions = Driver.GetDefaultOptions();
//enable batch
var useBatch = AppConfig["useBatchMode"] == "true";
if (useBatch && Driver.Supports(DbFeatures.BatchedUpdates))
{
DbOptions |= DbOptions.UseBatchMode;
}
else
{
DbOptions &= ~DbOptions.UseBatchMode;
}
//check connection
if (!DataUtility.TestConnection(Driver, ConnectionString, out var error))
{
Util.Throw("Failed to connect to the database: {0} \r\n Connection string: {1}", error, ConnectionString);
}
}
//Prepares for full run with a specified server
public static void Reset(DbServerType serverType)
{
ServerType = serverType;
//Load connection string
var connStringName = ServerType.ToString() + "ConnectionString";
var connString = ConfigurationManager.AppSettings[connStringName];
Util.Check(!string.IsNullOrEmpty(connString), "Connection string not found for key: {0}.", connStringName);
if (connString.Contains("{bin}"))
{
var asmPath = Assembly.GetExecutingAssembly().Location;
var binFolder = Path.GetDirectoryName(asmPath);
connString = connString.Replace("{bin}", binFolder);
}
ConnectionString = connString;
Driver = ToolHelper.CreateDriver(ServerType);
DbOptions = ToolHelper.GetDefaultOptions(ServerType);
//enable stored procs
DbOptions &= ~DbOptions.UseStoredProcs; //it is on by default
var useSp = ConfigurationManager.AppSettings["useStoredProcs"] == "true";
if (useSp && Driver.Supports(DbFeatures.StoredProcedures))
{
DbOptions |= Data.DbOptions.UseStoredProcs;
}
//enable batch
var useBatch = ConfigurationManager.AppSettings["useBatchMode"] == "true";
if (useBatch && Driver.Supports(DbFeatures.BatchedUpdates))
{
DbOptions |= DbOptions.UseBatchMode;
}
//check connection
string error;
if (!ToolHelper.TestConnection(Driver, ConnectionString, out error))
{
Util.Throw("Failed to connection to the database: {0} \r\n Connection string: {1}", error, ConnectionString);
}
}
private string FormatListPlaceHolder(SqlListParamPlaceHolder ph, object arg)
{
// read value from locals (linq); for DeleteMany: read list of IDs from list of records
var list = ph.ListValueReader((object[])arg);
// always use parameter, unless option is not available
var useLiteral = !_driver.Supports(DbFeatures.ArrayParameters) || _genMode == SqlGenMode.NoParameters;
if (useLiteral)
{
return(ph.FormatLiteral(list));
}
else
{
var prm = _sqlDialect.AddDbParameter(_dbCommand, ph, list);
var fmt = ph.FormatParameter;
return(fmt == null ? prm.ParameterName : fmt(prm));
}
}
