How to use

getCandidateClass

method

in

javax.jdo.Extent

@SuppressWarnings("rawtypes")
@Override
public void setCandidates(Extent pcs) {
  checkUnmodifiable();
  this.ext = pcs;
  if (pcs.getCandidateClass() != candCls) {
    setClass( pcs.getCandidateClass() );
    resetQuery();
  }
}

@SuppressWarnings("rawtypes")
public QueryImpl(PersistenceManagerImpl pm, Extent ext, String filter) {
  this(pm);
  this.ext = ext;
  setClass( this.ext.getCandidateClass() );
  this.filter = filter;
  this.subClasses = ext.hasSubclasses();
}

/**
 * Construct a query instance with the candidate Extent specified; the
 * candidate class is taken from the Extent.
 * @param cln The extent to query
 * @return The query
 */
public synchronized Query newQuery(Extent cln)
{
  Query query = newQuery();
  query.setClass(cln.getCandidateClass());
  query.setCandidates(cln);
  return query;
}

/**
 * Construct a query instance with the candidate Extent specified; the
 * candidate class is taken from the Extent.
 * @param cln The extent to query
 * @return The query
 * @param <T> Candidate type for the query
 */
public <T> Query<T> newQuery(Extent<T> cln)
{
  Query query = newQuery();
  query.setClass(cln.getCandidateClass());
  query.setCandidates(cln);
  return query;
}

checkUnmodifiable();
ext = new CollectionExtent(pcs, pm, ignoreCache);
if (ext.getCandidateClass() != candCls) {
  setClass(ext.getCandidateClass());
  resetQuery();

/**
 * Construct a query instance with the candidate Extent and filter
 * specified. The candidate class is taken from the Extent.
 * @param cln The extent to query
 * @param filter A filter to apply
 * @return The query
 */
public synchronized Query newQuery(Extent cln, String filter)
{
  Query query = newQuery();
  query.setClass(cln.getCandidateClass());
  query.setCandidates(cln);
  query.setFilter(filter);
  return query;
}

/**
 * Construct a query instance with the candidate Extent and filter
 * specified. The candidate class is taken from the Extent.
 * @param cln The extent to query
 * @param filter A filter to apply
 * @return The query
 * @param <T> Candidate type for the query
 */
public <T> Query<T> newQuery(Extent<T> cln, String filter)
{
  Query query = newQuery();
  query.setClass(cln.getCandidateClass());
  query.setCandidates(cln);
  query.setFilter(filter);
  return query;
}

/**
 * Set the candidate Extent to query.
 *
 * @param pcs the Candidate Extent.
 * @see javax.jdo.Query#setCandidates(javax.jdo.Extent)
 */
public void setCandidates(Extent pcs)
{
  discardCompiled();
  assertIsModifiable();
  if (pcs == null)
  {
    JPOXLogger.JDO_QUERY.warn(LOCALISER.msg("Candidates.ExtentCantBeNull"));
    return;
  }
  if (!(pcs instanceof Queryable))
  {
    throw new JDOUnsupportedOptionException(LOCALISER.msg("JDOQL.ExtentNotQueryableError",pcs.getClass().getName()));
  }
  setSubclasses(pcs.hasSubclasses());
  setClass(pcs.getCandidateClass());
  candidateExtent = pcs;
  candidateCollection = null; // We have an Extent, so remove any collection
}

assertEquals(TestClass.class, ext.getCandidateClass());
assertTrue(ext.hasSubclasses());