basic row Items (SCRUM)

1 files changed, 66 insertions, 0 deletions

diff --git a/sql/item_row.cc b/sql/item_row.cc
new file mode 100644
index 00000000000..95da4f5901e
--- /dev/null
+++ b/sql/item_row.cc
@@ -0,0 +1,66 @@
+/* Copyright (C) 2000 MySQL AB
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   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 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
+
+#include "mysql_priv.h"
+#include "assert.h"
+
+Item_row::Item_row(List<Item> &arg):
+  Item(), array_holder(1)
+{
+  if ((arg_count= arg.elements))
+    items= (Item**) sql_alloc(sizeof(Item*)*arg_count);
+  else
+    items= 0;
+  List_iterator<Item> li(arg);
+  uint i= 0;
+  Item *item;
+  while ((item= li++))
+  {
+    items[i]= item;
+    i++;    
+  }
+}
+
+void Item_row::illegal_method_call(const char *method)
+{
+  DBUG_ENTER("Item_row::illegal_method_call");
+  DBUG_PRINT("error", ("!!! %s method was called for row item", method));
+  DBUG_ASSERT(0);
+  my_error(ER_CARDINALITY_COL, MYF(0), arg_count);
+  DBUG_VOID_RETURN;
+}
+
+bool Item_row::fix_fields(THD *thd, TABLE_LIST *tabl, Item **ref)
+{
+  tables= 0;
+  for (uint i= 0; i < arg_count; i++)
+  {
+    if (items[i]->fix_fields(thd, tabl, items+i))
+      return 1;
+    tables |= items[i]->used_tables();
+  }
+  return 0;
+}
+
+bool Item_row::check_cols(uint c)
+{
+  if (c != arg_count)
+  {
+    my_error(ER_CARDINALITY_COL, MYF(0), arg_count);
+    return 1;
+  }
+  return 0;
+}