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/* Copyright (c) 2015, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
#ifndef DD_VIEW_INCLUDED
#define DD_VIEW_INCLUDED
struct MEM_ROOT;
class THD;
class Table_ref;
namespace dd {
class Schema;
class View;
/**
Store view metadata in the data-dictionary.
@param thd Thread handle.
@param schema Schema where the view should be created.
@param view Table_ref element describing the view.
@note The caller must rollback both statement and transaction on failure,
before any further accesses to DD. This is because such a failure
might be caused by a deadlock, which requires rollback before any
other operations on SE (including reads using attachable transactions)
can be done.
@retval false On Success.
@retval true On Failure.
*/
bool create_view(THD *thd, const dd::Schema &schema, Table_ref *view);
/**
Update view metadata in dd.views.
@param thd Thread handle.
@param new_view View object that should be updated.
@param view Table_ref element describing the new view.
@note The caller must rollback both statement and transaction on failure,
before any further accesses to DD. This is because such a failure
might be caused by a deadlock, which requires rollback before any
other operations on SE (including reads using attachable transactions)
can be done.
@retval false On success.
@retval true On failure.
*/
bool update_view(THD *thd, dd::View *new_view, Table_ref *view);
/** Read view metadata from dd.views into Table_ref */
bool read_view(Table_ref *view, const dd::View &view_ref, MEM_ROOT *mem_root);
/**
Update view status(valid/invalid) value in dd.views.options.
@param thd Thread handle.
@param schema_name Schema name.
@param view_name View name.
@param status View status(valid/invalid).
@param commit_dd_changes Indicates whether changes to DD need to be
committed.
@note In case when commit_dd_changes is false, the caller must rollback
both statement and transaction on failure, before any further
accesses to DD. This is because such a failure might be caused by
a deadlock, which requires rollback before any other operations on
SE (including reads using attachable transactions) can be done.
If case when commit_dd_changes is true this function will handle
transaction rollback itself.
@retval false On Success.
@retval true On Failure.
*/
bool update_view_status(THD *thd, const char *schema_name,
const char *view_name, bool status,
bool commit_dd_changes);
} // namespace dd
#endif // DD_VIEW_INCLUDED
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