MonetDB: hitchhiker - Added opt hitchhiker

[Thodoris Zois]

Changeset: cf655cd30e7e for MonetDB
URL: https://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=cf655cd30e7e
Modified Files:
        monetdb5/optimizer/Makefile.ag
        monetdb5/optimizer/opt_hitchhiker.c
        monetdb5/optimizer/opt_hitchhiker.h
        monetdb5/optimizer/optimizer.mal
Branch: hitchhiker
Log Message:

Added opt hitchhiker


diffs (77 lines):

diff --git a/monetdb5/optimizer/Makefile.ag b/monetdb5/optimizer/Makefile.ag
--- a/monetdb5/optimizer/Makefile.ag
+++ b/monetdb5/optimizer/Makefile.ag
@@ -52,7 +52,8 @@ lib_optimizer = {
                opt_profiler.c opt_profiler.h \
                opt_postfix.c opt_postfix.h \
                opt_volcano.c opt_volcano.h \
-               opt_wrapper.c
+               opt_wrapper.c \
+               opt_hitchhiker.c opt_hitchhiker.h
 }
 
 headers_mal = {
diff --git a/monetdb5/optimizer/opt_hitchhiker.c 
b/monetdb5/optimizer/opt_hitchhiker.c
--- a/monetdb5/optimizer/opt_hitchhiker.c
+++ b/monetdb5/optimizer/opt_hitchhiker.c
@@ -0,0 +1,23 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 1997 - July 2008 CWI, August 2008 - 2020 MonetDB B.V.
+ */
+
+#include "monetdb_config.h"
+#include "opt_hitchhiker.h"
+#include "mal_interpreter.h"
+
+str
+OPThitchhikerImplementation(Client cntxt, MalBlkPtr mb, MalStkPtr stk, 
InstrPtr pci)
+{
+    (void) cntxt;
+    (void) mb;
+    (void) stk;
+    (void) pci;
+
+    str msg = MAL_SUCCEED;
+    return msg;
+}
\ No newline at end of file
diff --git a/monetdb5/optimizer/opt_hitchhiker.h 
b/monetdb5/optimizer/opt_hitchhiker.h
--- a/monetdb5/optimizer/opt_hitchhiker.h
+++ b/monetdb5/optimizer/opt_hitchhiker.h
@@ -0,0 +1,16 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0.  If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * Copyright 1997 - July 2008 CWI, August 2008 - 2020 MonetDB B.V.
+ */
+
+#ifndef _OPT_HITCHHIKER_
+#define _OPT_HITCHHIKER_
+
+#include "opt_prelude.h"
+
+mal_export str OPThitchhikerImplementation(Client cntxt, MalBlkPtr mb, 
MalStkPtr stk, InstrPtr p);
+
+#endif
diff --git a/monetdb5/optimizer/optimizer.mal b/monetdb5/optimizer/optimizer.mal
--- a/monetdb5/optimizer/optimizer.mal
+++ b/monetdb5/optimizer/optimizer.mal
@@ -285,5 +285,12 @@ pattern optimizer.postfix(mod:str, fcn:s
 address OPTwrapper
 comment "Postfix the plan,e.g. pushing projections";
 
+#opt_hitchhiker.mal
+pattern optimizer.hitchhiker():str
+address OPTwrapper;
+pattern optimizer.hitchhiker(mod:any_1, fcn:any_2):str
+address OPTwrapper
+comment "Hitchhiker optimizer: nomadic query evaluation";
+
 optimizer.prelude();
 
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