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sql-serverhibernatejtds

Hibernate sql exception when table empty

The following code causes an exception when the Job table has no rows.

public List<Job> getAll(int currentPage, int pageSize) {
    return this.sessionFactory.getCurrentSession()
        .createCriteria(Job.class).addOrder(Order.asc("id"))
        .setFirstResult(currentPage * pageSize).setMaxResults(pageSize)
        .setFetchSize(pageSize).list();
}

I am using SQL Server and the JTDS driver.

The error i get is 

java.sql.SQLException: ResultSet may only be accessed in a forward direction.
 net.sourceforge.jtds.jdbc.JtdsResultSet.checkScrollable(JtdsResultSet.java:319)
 net.sourceforge.jtds.jdbc.JtdsResultSet.absolute(JtdsResultSet.java:716)
 org.apache.commons.dbcp.DelegatingResultSet.absolute(DelegatingResultSet.java:335)
 org.hibernate.loader.Loader.advance(Loader.java:1469)
 org.hibernate.loader.Loader.getResultSet(Loader.java:1783)
 org.hibernate.loader.Loader.doQuery(Loader.java:662)
 org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
 org.hibernate.loader.Loader.doList(Loader.java:2211)
 org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2095)
 org.hibernate.loader.Loader.list(Loader.java:2090)
 org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:95)
 org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
 org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
Solution

  • The issue is associated with trying to page an empty table. drop these:
    .setFirstResult(currentPage * pageSize).setMaxResults(pageSize)
    .setFetchSize(pageSize)
    and you should be able to query the empty table without issue. If you want to page the data, run a regular query first, then page the data with your query after you know you have data to page.