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POProblem with getting query result from database
 

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  1. POProblem with getting query result from database
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    <p>I made a class called <code>SpecializationBean</code> which has two private fields:</p> <pre><code>private ArrayList&lt;SelectItem&gt; specializationItems= new ArrayList&lt;SelectItem&gt;(); private String specializationName; </code></pre> <p>I have ofcourse a getter and setter for those two.</p> <p>and a <code>buildSpecializationList</code> method which builds the <code>specializationItems</code> list: (I call this method in the getter):</p> <pre><code>public void buildSpecializationList(){ List&lt;Object[]&gt; specializations = null; try{ Session mySession = HibernateUtil.getAdmSessionFactory().getCurrentSession(); Transaction transaction = mySession.beginTransaction(); String sql = "SELECT J_Specialization_ID, Specialization_Name_Ar FROM J_Specialization WHERE J_Department_ID = '1000001'"; Query query = mySession.createSQLQuery(sql).addScalar("id", Hibernate.LONG).addScalar("name", Hibernate.STRING); specializations = query.list(); } catch(Exception e){ e.printStackTrace(); } this.specializationItems = new ArrayList&lt;SelectItem&gt;(90); for(Object[] sp: specializations ){ this.specializationItems.add(new SelectItem(sp[0],(String) sp[1])); } } </code></pre> <p>The problem is that I get a null pointer exception which shows that the list <code>specializations</code> (defined in the <code>buildSpecializationList()</code>) is null. I have tried the query myself on the table and it returns a result. I also tried HQL query (istead):</p> <pre><code>String sqlQuery = "Select JSpecializationId, specializationNameAr FROM JSpecializationWHERE JDepartmentId = '1000001'"; Query q = mySession.createQuery(sqlQuery); </code></pre> <p>But still, I get a null pointer exception which shows that the query returns me null result. Do you have any suggestions?</p>
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    1. This table or related slice is empty.
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    1. USBalusC
    1. USSaher Ahwal
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    1. This table or related slice is empty.
 

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