92 lines
3 KiB
C++
92 lines
3 KiB
C++
/* Copyright (c) 2020, 2024, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is designed to work with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have either included with
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the program or referenced in the documentation.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "sql/parse_tree_window.h"
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#include <sys/types.h> // uint. TODO: replace with cstdint
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#include <initializer_list>
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#include "sql/item.h" // Item
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#include "sql/parse_tree_nodes.h"
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#include "sql/sql_lex.h" // Query_block
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#include "sql/window_lex.h" // WBT_VALUE_FOLLOWING
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bool PT_window::do_contextualize(Parse_context *pc) {
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if (super::do_contextualize(pc)) return true;
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if (m_partition_by != nullptr) {
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if (m_partition_by->contextualize(pc)) return true;
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}
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if (m_order_by != nullptr) {
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if (m_order_by->contextualize(pc)) return true;
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}
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if (m_frame != nullptr && !m_frame->m_originally_absent) {
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if (m_frame->contextualize(pc)) return true;
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}
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return false;
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}
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void PT_window::add_json_info(Json_object *obj) {
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if (m_name != nullptr)
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obj->add_alias("window_name",
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create_dom_ptr<Json_string>(m_name->item_name.ptr(),
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m_name->item_name.length()));
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}
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bool PT_frame::do_contextualize(Parse_context *pc) {
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for (auto *bound : {m_from, m_to})
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if (bound->contextualize(pc)) return true;
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if (m_exclusion != nullptr)
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if (m_exclusion->contextualize(pc)) return true;
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return false;
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}
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bool PT_border::do_contextualize(Parse_context *pc) {
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if (m_border_type == WBT_VALUE_PRECEDING ||
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m_border_type == WBT_VALUE_FOLLOWING) {
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auto **bound_i_ptr = border_ptr();
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if ((*border_ptr())->itemize(pc, bound_i_ptr)) return true;
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}
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return false;
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}
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bool PT_window_list::do_contextualize(Parse_context *pc) {
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if (super::do_contextualize(pc)) return true;
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uint count = pc->select->m_windows.elements;
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List_iterator<Window> wi(m_windows);
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Window *w;
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while ((w = wi++)) {
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if (static_cast<PT_window *>(w)->contextualize(pc)) return true;
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w->set_def_pos(++count);
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}
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Query_block *select = pc->select;
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select->m_windows.prepend(&m_windows);
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return false;
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}
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