* Returns the list of entity fields on which the search query is performed.
     *
     * @param  array $entityConfiguration
     * @return array The list of fields to use for the search
     */
    private function getFieldsForSearchAction(array $entityConfiguration)
    {
        $excludedFieldNames = array();
        $excludedFieldTypes = array('association', 'binary', 'blob', 'date', 'datetime', 'datetimetz', 'guid', 'time', 'object');

        return $this->filterFieldsByNameAndType($this->defaultEntityFields, $excludedFieldNames, $excludedFieldTypes);