Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/storage/mroonga/lib/mrn_table_fields_offset_mover.cpp b/storage/mroonga/lib/mrn_table_fields_offset_mover.cpp
new file mode 100644
index 00000000..bc2d2f25
--- /dev/null
+++ b/storage/mroonga/lib/mrn_table_fields_offset_mover.cpp
@@ -0,0 +1,47 @@
+/* -*- c-basic-offset: 2 -*- */
+/*
+  Copyright(C) 2017 Kouhei Sutou <kou@clear-code.com>
+
+  This library is free software; you can redistribute it and/or
+  modify it under the terms of the GNU Lesser General Public
+  License as published by the Free Software Foundation; either
+  version 2.1 of the License, or (at your option) any later version.
+
+  This library 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
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public
+  License along with this library; if not, write to the Free Software
+  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1335  USA
+*/
+
+#include "mrn_table_fields_offset_mover.hpp"
+
+namespace mrn {
+  FieldTableChanger::FieldTableChanger(TABLE *table,
+                                       TABLE *new_table)
+    : old_table_(table),
+      new_table_(new_table) {
+    my_ptrdiff_t diff =
+            PTR_BYTE_DIFF(new_table_->record[0], old_table_->record[0]);
+    uint n_columns = old_table_->s->fields;
+    for (uint i = 0; i < n_columns; ++i) {
+      Field *field = old_table_->field[i];
+      field->move_field_offset(diff);
+      field->table = new_table;
+    }
+  }
+
+  FieldTableChanger::~FieldTableChanger() {
+    my_ptrdiff_t diff =
+            PTR_BYTE_DIFF(new_table_->record[0], old_table_->record[0]);
+    uint n_columns = old_table_->s->fields;
+    for (uint i = 0; i < n_columns; ++i) {
+      Field *field = old_table_->field[i];
+      field->move_field_offset(-diff);
+      field->table = old_table_;
+    }
+  }
+}