public override bool DeleteMatching(Type type, Selector[] selectors)
{
var obj = GenericDatabaseEntity.GetNonDisposableRefenceObject(type);
if (obj == null) return false;
var result = obj.GetColumns(true);
if (result == null || result.GetPrimaryKeys() == null || !result.GetPrimaryKeys().Any())
{
throw new DatabaseException(DatabaseException.ErrorType.NoPrimaryKeyColumnsFound);
}
var connection = GenericConnectionManager.GetConnectionManager(GetSupportedDatabase()).GetConnection(type);
var command = connection.CreateCommand();
var whereStatement = "";
if (selectors != null)
whereStatement = selectors.Aggregate("",
(current, selector) =>
current + ((current == "" ? "" : " AND ") + selector.SetToCommand(ref command)));
var selectStatement = "DELETE FROM " + obj.GetType().Name +
(selectors != null && selectors.Any() ? (" WHERE " + whereStatement) : "");
command.CommandText = selectStatement;
var executionResult = command.ExecuteNonQuery();
command.Dispose();
if (executionResult >= 0)
{
_OnBulkDelete(type, selectors);
return true;
}
return false;
}
public override void FillDataTable(Type type, ref DataTable table, Selector[] selectors, int limit)
{
var obj = GenericDatabaseEntity.GetNonDisposableRefenceObject(type);
if (obj == null)
return;
var commandString = DatabaseEntity.GetSelectCommandString(type);
var whereQuery = "";
var command = GenericConnectionManager.GetConnectionManager(GetSupportedDatabase()).GetConnection(type).CreateCommand();
if (selectors != null && selectors.Any())
{
whereQuery = selectors.Aggregate(whereQuery, (current, selector) => current + ((current == "" ? "" : " AND ") + selector.SetToCommand(ref command)));
}
command.CommandText = commandString + (whereQuery != "" ? (" WHERE " + whereQuery) : "") + (limit > 0 ? (" LIMIT " + limit) : "");
var reader = command.ExecuteReader();
var fieldInfos = obj.GetColumns(true).GetOtherColumns().Where(i => ((TableColumn)i.GetCustomAttributes(typeof(TableColumn), true)[0]).IsRetrievableFromDatabase).ToArray();
table.Rows.Clear();
table.Columns.Clear();
var translators = new List<string[]>();
foreach (var fieldInfo in fieldInfos)
{
var cInfo = ((TableColumn)fieldInfo.GetCustomAttributes(typeof(TableColumn), true)[0]);
if (fieldInfo.FieldType == typeof(bool))
table.Columns.Add(cInfo.GridDisplayName ?? fieldInfo.Name, typeof(bool));
else
table.Columns.Add(cInfo.GridDisplayName ?? fieldInfo.Name);
translators.Add(cInfo.Translators);
}
if (!reader.Read())
{
reader.Close();
command.Dispose();
return;
}
frmLoadingDialog.ShowWindow();
do
{
if (frmLoadingDialog.GetStatus())
break;
var row = table.Rows.Add();
for (var i = 0; i < table.Columns.Count; i++)
{
try
{
if (translators[i] != null)
{
var index = (int)reader[i];
row[i] = (translators.Count > i && i >= 0) ? translators[i][index] : index.ToString(CultureInfo.InvariantCulture);
}
else
row[i] = reader[i];
}
catch { }
}
}
while (reader.Read());
reader.Close();
frmLoadingDialog.HideWindow();
command.Dispose();
}
public override GenericDatabaseEntity[] Select(Type type, Selector[] selectors)
{
var obj = GenericDatabaseEntity.GetNonDisposableRefenceObject(type);
if (obj == null) return new DatabaseEntity[0];
var result = obj.GetColumns(true);
if (result == null || result.GetPrimaryKeys() == null || !result.GetPrimaryKeys().Any())
{
throw new DatabaseException(DatabaseException.ErrorType.NoPrimaryKeyColumnsFound);
}
var selectFields =
result.GetOtherColumns()
.Where(i => ((TableColumn)i.GetCustomAttributes(typeof(TableColumn), true)[0]).IsRetrievableFromDatabase)
.Aggregate("", (current, selector) => current + ((current == "" ? "" : ", ") + selector.Name));
var connection = GenericConnectionManager.GetConnectionManager(GetSupportedDatabase()).GetConnection(type);
var command = connection.CreateCommand();
var whereStatement = "";
if (selectors != null)
{
whereStatement = selectors.Aggregate("",
(current, selector) =>
current + ((current == "" ? "" : " AND ") + selector.SetToCommand(ref command)));
}
var selectStatement = "SELECT " + selectFields + " FROM " + obj.GetType().Name +
(selectors != null && selectors.Any() ? (" WHERE " + whereStatement) : "");
command.CommandText = selectStatement;
var reader = command.ExecuteReader();
var results = ParseDataReader(type, reader);
command.Dispose();
return results;
}
