public KeywordQueryConfigHandler() {
// Add listener that will build the FieldConfig attributes.
// TODO: setting field configuration is to be deprecated once datatypes
// in SIREn are correctly handled.
this.addFieldConfigListener(new FieldDateResolutionFCListener(this));
// Default Values
this.set(ConfigurationKeys.ALLOW_LEADING_WILDCARD, false); // default in 2.9
this.set(ConfigurationKeys.ANALYZER, null); //default value 2.4
this.set(ConfigurationKeys.PHRASE_SLOP, 0); //default value 2.4