Hibernate - Unable to resolve property error when accessing new data field

Question

I'm modifying an exising POJO to include a boolean field, and want to display said Categories based on the boolean value.

To do so, I have updated the Hibernate XML configuration and added the fields to the database. My issue is that a HibernateQueryError is thrown on the Criteria.list() method when returning the data because Hibernate cannot resolve the new field.

Category POJO:

public class Category implements java.io.Serializable {

private long id;
private String name;
private Short displayOrder;
private Boolean enabled;
private Set<Submission> submissions = new HashSet<Submission>(0);

   //getters and setters
   public Boolean getEnabled(){
      return this.enabled;
   }

   public void setEnabled(Boolean enabled){
      this.enabled = enabled;
   }

Added mapping to hibernate config:

<hibernate-mapping>
    <class name="com.jason.app.hibernate.Category" table="CATEGORY" lazy="false">
    ... other properties

    <property name="enabled" type = "java.lang.Boolean">
        <column name="IS_ENABLED" />
    </property>

    ... set mapping configuration

</hibernate-mapping>

and this is the trouble spot:

private boolean hasDisplayOrder;
private boolean isEnabled;

public List<V> list() {

    try {
        Criteria criteria = getSession().createCriteria(returnedClass());

        if (hasDisplayOrder && isEnabled){
            criteria = criteria.add(Restrictions.eq("enabled", true))
                                .addOrder(Order.asc("displayOrder"));
            log.info("Category object is enabled, added to criteria");
        }
        else if (hasDisplayOrder ) {
            criteria = criteria.addOrder(Order.asc("displayOrder"));
            log.info("Object does not contain enabled method");
        }

        return criteria.list();
    }
    catch (RuntimeException re) {
        log.error("Could not retrieve list results for class "
                + returnedClass.getSimpleName(), re);
    }

    return null;
}

The logging statement inside the first conditional triggers in the logs, and then an error message is printed out.

2014-02-12 12:02:49,482 INFO  [com.jason.app.manager.BaseManager]  Category object is enabled, added to criteria

2014-02-12 12:02:49,489 ERROR [com.jason.app.manager.BaseManager] Could not retrieve list results for class Category
org.hibernate.QueryException: could not resolve property: enabled of: com.jason.app.hibernate.Category

Things I've tried:

Change data type from boolean to Boolean in Category
change type from boolean to java.lang.Boolean in hibernate config

The web form that this POJO is used for displays just fine if I remove the conditional inside the list() method above, but it shows all categories regardless of state.

Are there any other options to try out?

Please tell me the package of this Category class.I know in logs it is showing com.jason.app.hibernate .But i need to be sure — Kumar Abhinav, Feb 12 '14 at 17:34
It is. That's where the domain objects reside along with their corresponding CLASSNAME.hbm.xml mappings — Jason, Feb 12 '14 at 17:36
Did you recently add this column in your database.Please check if the column name is spelled correctly — Kumar Abhinav, Feb 12 '14 at 17:46
Column name is correct in the xml. The field was recently added into the oracle db as a `Number(1)` and contains either a 1 or zero. — Jason, Feb 12 '14 at 17:59
Change your `getEnabled()` to `isEnabled()` and I would use a `boolean` instead of a `Boolean` (unless the field can actually be `null`). Boolean fields don't have a `get*` method the have an `is*` method. See http://stackoverflow.com/questions/799280/valid-java-bean-names-for-booleans — M. Deinum, Feb 12 '14 at 18:03

score 0 · Answer 1 · answered Feb 13 '14 at 23:27

0

What if you switched your Java code to use Boolean instead boolean, something like this:

private boolean enabled = true;

public boolean isEnabled() {
    return enabled;
}

public void setEnabled(boolean enabled) {
    this.enabled = enabled;
}

answered Feb 13 '14 at 23:27

SergeyB

9,478
4
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47

Already tried it, along with `getEnabled()`, both with primitive and object. Nothing worked. – Jason Feb 14 '14 at 00:42

Hibernate - Unable to resolve property error when accessing new data field

1 Answers1