QueryDSL

Usage

EntityManager em = ...;
String query = "select name, age where age > 18 order by name limit 0, 100";

JPAQueryDslParser parser = new JPAQueryDslParser(em);

//Create a evaluation context. All paths added here will be available on query syntax
QueryDslContext context = QueryDslContext.from(QTest.test)
                .withPath("name", QTest.test.name)
                .withPath("age", QTest.test.age)
                .withPath("other.id", QTest.test.other.id)
                .withPath("other.name", QTeste.test.other.name)
                .build();

//Parse query string into a QueryDSL JPAQuery object
JPAQuery jpaQuery = parser.parse(query, context);

//List only projected fields
List<Test> list = jpaQuery.list(context.getProjectionOrDefault());