1 files changed, 33 insertions, 0 deletions
diff --git a/sql/field_comp.h b/sql/field_comp.h
new file mode 100644
index 00000000000..7eb8ab1e75e
--- /dev/null
+++ b/sql/field_comp.h
@@ -0,0 +1,33 @@
+#ifndef FIELD_COMP_H_INCLUDED
+#define FIELD_COMP_H_INCLUDED
+/* Copyright (C) 2017 MariaDB Foundation
+
+   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; version 2 of the License.
+
+   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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+
+#define MAX_COMPRESSION_METHODS 16
+
+struct Compression_method
+{
+  const char *name;
+  uint (*compress)(THD *thd, char *to, const char *from, uint length);
+  int (*uncompress)(String *to, const uchar *from, uint from_length,
+                    uint field_length);
+};
+
+
+extern Compression_method compression_methods[MAX_COMPRESSION_METHODS];
+#define zlib_compression_method (&compression_methods[8])
+
+#endif