the begginning

utils/funcexp/func_replace.cpp

@@ -0,0 +1,83 @@
+/* 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_replace.cpp 3923 2013-06-19 21:43:06Z bwilkinson $
+*
+*
+****************************************************************************/
+
+#include <string>
+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;
+
+namespace funcexp
+{
+
+CalpontSystemCatalog::ColType Func_replace::operationType(FunctionParm& fp, CalpontSystemCatalog::ColType& resultType)
+{
+	// operation type is not used by this functor
+	return fp[0]->data()->resultType();
+}
+
+
+std::string Func_replace::getStrVal(rowgroup::Row& row,
+						FunctionParm& fp,
+						bool& isNull,
+						execplan::CalpontSystemCatalog::ColType&)
+{
+	const string& str = fp[0]->data()->getStrVal(row, isNull);
+
+	const string& fromstr = fp[1]->data()->getStrVal(row, isNull);
+
+	const string& tostr = fp[2]->data()->getStrVal(row, isNull);
+
+	string newstr;
+	unsigned int i = 0;
+	for(;;) 
+	{
+		size_t pos = str.find(fromstr, i);
+		if ( pos != string::npos ) {
+			//match
+			if ( pos > i )
+				newstr = newstr + str.substr(i,pos-i);
+
+			newstr = newstr + tostr;
+			i = pos + fromstr.size();
+		}
+		else {
+			newstr = newstr + str.substr(i,1000);
+			break;
+		}
+	}
+
+	return newstr;
+}
+
+
+} // namespace funcexp
+// vim:ts=4 sw=4:
+