/// <summary>
/// This class represents a provier class to get right schema reader based on database type.
/// </summary>
public static SchemaReader GetReader(DbServerType dbServerType)
{
SchemaReader schemaReader = null;
switch (dbServerType)
{
case DbServerType.MsSql:
schemaReader = new SqlServerSchemaReader();
break;
case DbServerType.Sqlite:
schemaReader = new SqliteSchemaReader();
break;
case DbServerType.MySql:
schemaReader = new MySqlSchemaReader();
break;
case DbServerType.Postgres:
schemaReader = new PostgreSqlSchemaReader();
break;
}
return(schemaReader);
}
private Tables LoadTables(GenerateContext context)
{
var cmd = context.Command;
if (string.IsNullOrWhiteSpace(cmd.ProviderName))
{
WriteLine("");
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("// db provider must be provided");
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("");
return(new Tables());
}
if (string.IsNullOrWhiteSpace(cmd.ConnectionString))
{
WriteLine("");
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("// connection string must be provided.");
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("");
return(new Tables());
}
DbProviderFactory _factory;
try
{
_factory = DbProviderFactories.GetFactory(cmd.ProviderName);
}
catch (Exception x)
{
var error = x.Message.Replace("\r\n", "\n").Replace("\n", " ");
WriteLine("");
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("// Failed to load provider `{0}` - {1}", cmd.ProviderName, error);
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("");
return(new Tables());
}
try
{
Tables result;
using (var conn = _factory.CreateConnection())
{
conn.ConnectionString = cmd.ConnectionString;
conn.Open();
SchemaReader reader = null;
if (_factory.GetType().Name == "MySqlClientFactory")
{
reader = new MySqlSchemaReader();
context.EscapeSqlIdentifier = sqlIdentifier => $"`{sqlIdentifier}`";
}
else if (_factory.GetType().Name == "SqlCeProviderFactory")
{
reader = new SqlServerCeSchemaReader();
}
else if (_factory.GetType().Name == "NpgsqlFactory")
{
reader = new PostGreSqlSchemaReader();
context.EscapeSqlIdentifier = sqlIdentifier => $"\"{sqlIdentifier}\"";
}
else if (_factory.GetType().Name == "OracleClientFactory")
{
reader = new OracleSchemaReader();
context.EscapeSqlIdentifier = sqlIdentifier => $"\"{sqlIdentifier.ToUpperInvariant()}\"";
}
else
{
reader = new SqlServerSchemaReader();
}
reader.outer = _outer;
result = reader.ReadSchema(conn, _factory);
// Remove unrequired tables/views
for (int i = result.Count - 1; i >= 0; i--)
{
if (cmd.SchemaName != null && string.Compare(result[i].Schema, cmd.SchemaName, true) != 0)
{
result.RemoveAt(i);
continue;
}
if (!cmd.IncludeViews && result[i].IsView)
{
result.RemoveAt(i);
continue;
}
if (Helpers.StartsWithAny(result[i].ClassName, cmd.ExcludePrefix))
{
result.RemoveAt(i);
continue;
}
}
conn.Close();
var rxClean = new Regex("^(Equals|GetHashCode|GetType|ToString|repo|Save|IsNew|Insert|Update|Delete|Exists|SingleOrDefault|Single|First|FirstOrDefault|Fetch|Page|Query)$");
foreach (var t in result)
{
t.ClassName = cmd.ClassPrefix + t.ClassName + cmd.ClassSuffix;
foreach (var c in t.Columns)
{
c.PropertyName = rxClean.Replace(c.PropertyName, "_$1");
// Make sure property name doesn't clash with class name
if (c.PropertyName == t.ClassName)
{
c.PropertyName = "_" + c.PropertyName;
}
}
}
return(result);
}
}
catch (Exception x)
{
var error = x.Message.Replace("\r\n", "\n").Replace("\n", " ");
WriteLine("");
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("// Failed to read database schema - {0}", error);
WriteLine("// -----------------------------------------------------------------------------------------");
WriteLine("");
return(new Tables());
}
}
