public override DbDataAdapter GetAdapter(string selectCommand, DbConnection connection,
CommandParameterCollection parameters)
{
OracleDataAdapter adapter = new OracleDataAdapter(selectCommand, connection as OracleConnection);
foreach (CommandParameter p in parameters)
{
OracleParameter parameter = adapter.SelectCommand.Parameters.Add(p.Name, (OracleDbType)p.DataType, p.Size);
parameter.Value = p.Value;
}
return(adapter);
}
public override DbDataAdapter GetAdapter(string selectCommand, DbConnection connection,
CommandParameterCollection parameters)
{
VistaDBDataAdapter adapter = new VistaDBDataAdapter(selectCommand, connection as VistaDBConnection);
foreach (CommandParameter p in parameters)
{
VistaDBParameter parameter = adapter.SelectCommand.Parameters.Add(p.Name, (VistaDBType)p.DataType, p.Size);
object value = p.Value;
parameter.Value = value is Variant ? ((Variant)value).Value : value;
}
return(adapter);
}
public override void FillTableSchema(DataTable table, string selectCommand, CommandParameterCollection parameters)
{
CassandraConnectionStringBuilder builder = new CassandraConnectionStringBuilder(ConnectionString);
using (DbConnection connection = GetConnection())
{
OpenConnection(connection);
selectCommand = $"select * from {builder.DefaultKeyspace}.{table.TableName}";
using (DbDataAdapter adapter = GetAdapter(selectCommand, connection, parameters))
{
adapter.SelectCommand.CommandTimeout = CommandTimeout;
adapter.Fill(table);
}
}
}
/// <inheritdoc/>
public override DbDataAdapter GetAdapter(string selectCommand, DbConnection connection,
CommandParameterCollection parameters)
{
SqlDataAdapter adapter = new SqlDataAdapter(selectCommand, connection as SqlConnection);
foreach (CommandParameter p in parameters)
{
SqlParameter parameter = adapter.SelectCommand.Parameters.Add(p.Name, (SqlDbType)p.DataType, p.Size);
object value = p.Value;
if ((SqlDbType)p.DataType == SqlDbType.UniqueIdentifier && (value is Variant || value is String))
{
value = new Guid(value.ToString());
}
parameter.Value = value;
}
return(adapter);
}
/// <summary>
/// Fills the table schema.
/// </summary>
/// <param name="table">DataTable to fill.</param>
/// <param name="selectCommand">The SQL select command.</param>
/// <param name="parameters">SQL parameters.</param>
/// <remarks>
/// Usually you don't need to use this method. Internally it uses the <see cref="GetConnection"/> and
/// <see cref="GetAdapter"/> methods to fill the table schema. If you create own connection component
/// that does not use nor connection or adapter, then you need to override this method.
/// </remarks>
public virtual void FillTableSchema(DataTable table, string selectCommand,
CommandParameterCollection parameters)
{
using (DbConnection conn = GetConnection())
{
OpenConnection(conn);
// prepare select command
selectCommand = PrepareSelectCommand(selectCommand, table.TableName, conn);
// read the table schema
using (DbDataAdapter adapter = GetAdapter(selectCommand, conn, parameters))
{
adapter.SelectCommand.CommandTimeout = CommandTimeout;
adapter.FillSchema(table, SchemaType.Source);
}
}
}
/// <inheritdoc/>
public override void FillTableData(DataTable table, string selectCommand, CommandParameterCollection parameters)
{
// do nothing
}
/// <summary>
/// Returns a <see cref="DbDataAdapter"/> object that is specific to this connection.
/// </summary>
/// <param name="selectCommand">The SQL command used to fetch a table data rows.</param>
/// <param name="connection">The connection object.</param>
/// <param name="parameters">The select command parameters.</param>
/// <returns>The <b>DbDataAdapter</b> object.</returns>
/// <remarks>
/// You should override this method if you are developing a new connection component. In this method,
/// you need to create the adapter and set its <b>SelectCommand</b>'s parameters.
/// <para/>If your connection does not use data adapter, you need to override
/// the <see cref="FillTableSchema"/> and <see cref="FillTableData"/> methods instead.
/// </remarks>
/// <example>Here is the example of this method implementation:
/// <code>
/// public override DbDataAdapter GetAdapter(string selectCommand, DbConnection connection,
/// CommandParameterCollection parameters)
/// {
/// OleDbDataAdapter adapter = new OleDbDataAdapter(selectCommand, connection as OleDbConnection);
/// foreach (CommandParameter p in parameters)
/// {
/// OleDbParameter parameter = adapter.SelectCommand.Parameters.Add(p.Name, (OleDbType)p.DataType, p.Size);
/// parameter.Value = p.Value;
/// }
/// return adapter;
/// }
/// </code>
/// </example>
public virtual DbDataAdapter GetAdapter(string selectCommand, DbConnection connection,
CommandParameterCollection parameters)
{
return(null);
}
/// <inheritdoc/>
public override void FillTableData(DataTable table, string selectCommand,
CommandParameterCollection parameters)
{
CreateDataTable(table, true);
}
public override DbDataAdapter GetAdapter(string selectCommand, DbConnection connection, CommandParameterCollection parameters)
{
CqlDataAdapter adapter = new CqlDataAdapter();
adapter.SelectCommand = new CqlCommand();
adapter.SelectCommand.Connection = connection;
adapter.SelectCommand.CommandText = selectCommand;
foreach (DbParameter p in parameters)
{
CqlParameter parameter = new CqlParameter(p.ParameterName, p.Value);
adapter.SelectCommand.Parameters.Add(parameter);
}
return(adapter);
}
/// <inheritdoc/>
public override DbDataAdapter GetAdapter(string selectCommand, DbConnection connection, FastReport.Data.CommandParameterCollection parameters)
{
SqlCeDataAdapter adapter = new SqlCeDataAdapter(selectCommand, connection as SqlCeConnection);
foreach (CommandParameter p in parameters)
{
SqlCeParameter parameter = adapter.SelectCommand.Parameters.Add(p.Name, (SqlDbType)p.DataType, p.Size);
parameter.Value = p.Value;
}
return(adapter);
}
public override DbDataAdapter GetAdapter(string selectCommand, DbConnection connection, CommandParameterCollection parameters)
{
ClickHouseDataAdapter adapter = new ClickHouseDataAdapter();
adapter.SelectCommand = new ClickHouseCommand(connection as ClickHouseConnection);
adapter.SelectCommand.CommandText = selectCommand;
foreach (CommandParameter p in parameters)
{
ClickHouseDbParameter parameter = new ClickHouseDbParameter();
adapter.SelectCommand.Parameters.Add(p.Name);
parameter.Value = p.Value;
}
return(adapter);
}
