createQuery method error

#1
hongsun
hongsun
Joined on 2013‑08‑06

Hello,

I am learning ObjectDB now. I create a simple Dao method as below:

  

public boolean isJobExist(String name) {
    TypedQuery<Long> query = em.createQuery(
        "SELECT count(j) FROM MFJob j WHERE j.jobName = :name", Long.class);
    return query.setParameter("name", name).getSingleResult()>0 ? true : false;
}

Once I compile it, Error: 

C:\Users\xxx\xxxxx\vobs\xxxxx\xxxxx\src\main\java\com\xxxx\ xxxx \xxxx\dao\JobDao.java:75: createQuery(java.lang.String) in javax.persistence.EntityManager cannot be applied to (java.lang.String,java.lang.Class<java.lang.Long>)
    [javac]       TypedQuery<Long> query = em.createQuery(

-----------------------------------

Sounds like I am using jpa 1.0 implement, but I do have objectdb.jar in my classpath. can anybody help?

thanks

 

#2
support
support
Joined on 2010‑05‑03

Maybe you have an old JPA or ObjectDB JAR in your classpath before the new objectdb.jar file.

What version of ObjectDB are you using?

 

ObjectDB Support
#3
hongsun
hongsun
Joined on 2013‑08‑06

Thanks. I got it. 

I have javaee-api-5.jar in my classpath which causes the error

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