public static QueryEngine getDefault() {
        if (defaultQueryEngine == null) {
            defaultQueryEngine = new DefaultQueryEngine(new DefaultEvaluatorFactory(CollQueryTemplates.DEFAULT));
        }
        return defaultQueryEngine;
    }
Default implementation of the {@link QueryEngine} interface

@author tiwe
querydsl-collections/src/main/java/com/querydsl/collections/DefaultQueryEngine.java