the begginning

utils/funcexp/func_repeat.cpp

@@ -0,0 +1,101 @@
+/* Copyright (C) 2014 InfiniDB, Inc.
+
+   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 Street, Fifth Floor, Boston,
+   MA 02110-1301, USA. */
+
+/****************************************************************************
+* $Id: func_repeat.cpp 2477 2011-04-01 16:07:35Z rdempsey $
+*
+*
+****************************************************************************/
+
+#include <cstdlib>
+#include <string>
+#include <sstream>
+using namespace std;
+
+#include "functor_str.h"
+#include "functioncolumn.h"
+using namespace execplan;
+
+#include "rowgroup.h"
+using namespace rowgroup;
+
+#include "joblisttypes.h"
+using namespace joblist;
+
+class to_lower
+{
+    public:
+        char operator() (char c) const            // notice the return type
+        {
+            return tolower(c);
+        }
+};
+
+
+namespace funcexp
+{
+
+CalpontSystemCatalog::ColType Func_repeat::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
+{
+	// operation type is not used by this functor
+	//return fp[0]->data()->resultType();
+	return resultType;
+}
+
+std::string Func_repeat::getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType& op_ct)
+{
+	string str = stringValue(fp[0], row, isNull);
+
+	if (str.empty() || str == "")
+		return "";
+
+	int count = fp[1]->data()->getIntVal(row, isNull);
+	if (isNull)
+		return "";
+
+	if ( count < 1  )
+		return "";
+
+	//calculate size of buffer to allocate
+
+	int size = str.length() * count;
+
+	//allocate memory
+	char *result = NULL;
+	result = (char*) alloca(size * sizeof(char) + 1);
+ 	if (result == NULL) {
+		return "";
+ 	}
+
+	memset( (char*) result, 0, size);
+
+	for ( int i = 0 ; i < count ; i ++ )
+	{
+ 		if(strcat(result, str.c_str()) == NULL)
+		return "";
+	}
+
+	return result;
+}
+
+
+} // namespace funcexp
+// vim:ts=4 sw=4:
+