H3-1. Constance

Constance 가 필요하면 Expressions.constant(xxx) 사용

@Test // Constant
public void testConstant() {
    List<Tuple> tuples = queryFactory
            .select(slave.slaveName, Expressions.constant("NIGGER"))
            .from(slave)
            .fetch();

    for (Tuple tuple : tuples) {
        System.out.println("⚠️⚠️⚠️⚠️ Tuple: " + tuple);
    }
}

⚠️⚠️⚠️⚠️ Tuple: [slave1, NIGGER]
⚠️⚠️⚠️⚠️ Tuple: [slave2, NIGGER]
⚠️⚠️⚠️⚠️ Tuple: [slave3, NIGGER]
⚠️⚠️⚠️⚠️ Tuple: [slave4, NIGGER]

H3-2. Character

Concat 사용

@Test // Character
public void testCharacter() {
    String res = queryFactory
            .select(slave.slaveName.concat("_").concat(slave.age.stringValue()))
            .from(slave)
            .where(slave.slaveName.eq("slave1"))
            .fetchOne();

    System.out.println("⚠️⚠️⚠️⚠️ Character Result: " + res);
}

⚠️⚠️⚠️⚠️ Character Result: slave1_10