MDEV-19308: bloom filterbb-10.8-MDEV-19308

2 files changed, 92 insertions, 0 deletions

diff --git a/sql/bloom_rowid_filter.cc b/sql/bloom_rowid_filter.cc
new file mode 100644
index 00000000000..bec900c7635
--- /dev/null
+++ b/sql/bloom_rowid_filter.cc
@@ -0,0 +1,38 @@
+/*
+   Copyright (c) 2021 MariaDB
+
+   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 */
+
+#include "bloom_rowid_filter.h"
+#include "hash.h"
+
+
+bool Bloom_filter_container::alloc()
+{
+  bool success= true;
+  return success;
+}
+
+bool Bloom_filter_container::add(void *ctxt, char *elem)
+{
+  bool success= true;
+  return success;
+}
+
+bool Bloom_filter_container::check(void *ctxt, char *elem)
+{
+  bool success= true;
+  return success;
+}
+
diff --git a/sql/bloom_rowid_filter.h b/sql/bloom_rowid_filter.h
new file mode 100644
index 00000000000..c880dc015bd
--- /dev/null
+++ b/sql/bloom_rowid_filter.h
@@ -0,0 +1,54 @@
+/*
+   Copyright (c) 2021 MariaDB
+
+   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 */
+
+#pragma once
+
+
+#include "rowid_filter.h"
+
+
+/**
+  @class Bloom_filter_container
+
+  The bloom filter container implementation to store info on the set
+  of rowids / primary keys that defines a pk-filter.
+*/
+class Bloom_filter_container : public Rowid_filter_container
+{
+public:
+
+  Rowid_filter_container_type get_type() override { return BLOOM_FILTER_CONTAINER; }
+
+  /* Allocate memory for the container */
+  bool alloc() override;
+
+  /*
+    @brief Add info on a rowid / primary to the container
+    @param ctxt   The context info (opaque)
+    @param elem   The rowid / primary key to be added to the container
+    @retval       true if elem is successfully added
+  */
+  bool add(void *ctxt, char *elem) override;
+
+  /*
+    @brief Check whether a rowid / primary key is in container
+    @param ctxt   The context info (opaque)
+    @param elem   The rowid / primary key to be checked against the container
+    @retval       False if elem is definitely not in the container
+  */
+  bool check(void *ctxt, char *elem) override;
+
+};