MCOL-1246 Fix string matching for whitespace

For equality string matches other engines ignore trailing whitespace
(this does not apply to LIKE matches). So we should do the same. This
patch trims whitespace for MIN/MAX extent elimination checks, fixed
width columns and dictionary columns during equality matches against
constants (SELECT * FROM t1 WHERE b = 'ABC').

primitives/linux-port/dictionary.cpp

@@ -21,6 +21,7 @@
 
 #include <iostream>
 #include <boost/scoped_array.hpp>
+#include <boost/algorithm/string/trim.hpp>
 #include <sys/types.h>
 using namespace std;
 
@@ -164,7 +165,10 @@ void PrimitiveProcessor::p_TokenByScan(const TokenByScanRequestHeader *h,
 		string arg_utf8;
 
 		if (eqFilter) {
-			bool gotIt = eqFilter->find(string(sig, siglen)) != eqFilter->end();
+            // MCOL-1246 Trim whitespace before match
+            string strData(sig, siglen);
+            boost::trim_right(strData);
+            bool gotIt = eqFilter->find(strData) != eqFilter->end();
 			if ((h->COP1 == COMPARE_EQ && gotIt) || (h->COP1 == COMPARE_NE &&
 					!gotIt))
 				goto store;