* Helper method to be used by the constructor. It create the analyzer that tokenizes
* only the fields to be tokenized.
*/
private Analyzer createAnalyzer() {
final String[] stopwords = commonConfig.getStringArray("stopwords");
StandardAnalyzer stdAnalyzer = new LatinStandardAnalyzer(stopwords);
PerFieldAnalyzerWrapper retval = new PerFieldAnalyzerWrapper(stdAnalyzer);
String[] nonTokenizedField = searcherConfig.getStringArray("QueryParser.nonTokenizedFields");
String[] synonymFields = searcherConfig.getStringArray("QueryParser.synonymFields");
String synonymFile = searcherConfig.getString("QueryParser.synonymFile");