performance degraded after upgrading from 1.1.7 to 1.1.8

After upgrading from 1.1.7 to 1.1.8, I noticed a performance decrease. The CPU Sampler in VisualVM pointed to MySQLParameterizedQuery.toSQL2() being the issue.

I modified this method to use a StringBuilder instead of += which seems to have addressed the issue.

Updated Code:

private String toSQL2() throws UnsupportedEncodingException {
if(queryPartsArray.length == 0)

{ return ""; }

StringBuilder sb = new StringBuilder(new String(queryPartsArray[0], "UTF-8"));

for(int i = 1; i<queryPartsArray.length; i++)

{ sb.append(parameters[i-1]); if(queryPartsArray[i].length != 0) sb.append(new String(queryPartsArray[i], "UTF-8")); }

return sb.toString();
}