Examples of javax.jdo.Query.closeAll()

javax.jdo.Query.closeAll()
Close all query results associated with this Query instance, and release all resources associated with them. The query results might have iterators open on them. Iterators associated with the query results are invalidated: they return false to hasNext() and throw NoSuchElementException to next().

    Iterator it = results.iterator();
    while(it.hasNext()){
      Person p = (Person) it.next();
      System.out.println( p.toString());
    }
    query.closeAll();
    System.out.println();
  }
  
  //retrieve all the over-25 persons with ordering
  public static void basicQueryOrdering(PersistenceManager pm){

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    Iterator it = results.iterator();
    while(it.hasNext()){
      Person p = (Person) it.next();
      System.out.println( p.toString());
    }
        query.closeAll();
        System.out.println();
  }
  
  //retrieve a person according to his name
  public static void parameterPassing(PersistenceManager pm){

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    Iterator it = results.iterator();
    while(it.hasNext()){
      Person p = (Person) it.next();
      System.out.println( p.toString());
    }
    query.closeAll();
    System.out.println();
  }
  
  //retrieve a person according to his name and persons according to their age
  public static void compositeFilter(PersistenceManager pm){

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    Iterator it = results.iterator();
    while(it.hasNext()){
      Person p = (Person) it.next();
      System.out.println( p.toString());
    }
    query.closeAll();
    System.out.println();
  }
  
  //retrieve a person according to his contact details
  public static void navigationSingleField(PersistenceManager pm){

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    Iterator it = results.iterator();
    while(it.hasNext()){
      Person p = (Person) it.next();
      System.out.println( p.toString());
    }
    query.closeAll();
    System.out.println();
  }
  
  //retrieve a person according to the age of his children 
  public static void navigationMultiValuedField(PersistenceManager pm){

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    Iterator it = results.iterator();
    while(it.hasNext()){
      Person p = (Person) it.next();
      System.out.println( p.toString());
    }
    query.closeAll();
    System.out.println();
  }
  
  public static void main(String[] args){
    TutorialHelper th = null;

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        logger.log(BasicLevel.INFO, "Search all A (including C and D instances):");
        for (Iterator it = c.iterator(); it.hasNext();) {
            A a = (A) it.next();
            logger.log(BasicLevel.INFO, "\t- " + a.getAid());
        }
        q.closeAll();
        pm.currentTransaction().commit();


        pm.currentTransaction().begin();
        q = pm.newQuery(A.class);
        c = new ArrayList((Collection) q.execute());

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        pm.currentTransaction().commit();


        pm.currentTransaction().begin();
        q = pm.newQuery(A.class);
        c = new ArrayList((Collection) q.execute());
        q.closeAll();
        q = pm.newQuery(E.class);
        c.addAll((Collection) q.execute());
        q.closeAll();
        pm.deletePersistentAll(c);
        pm.currentTransaction().commit();

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        q = pm.newQuery(A.class);
        c = new ArrayList((Collection) q.execute());
        q.closeAll();
        q = pm.newQuery(E.class);
        c.addAll((Collection) q.execute());
        q.closeAll();
        pm.deletePersistentAll(c);
        pm.currentTransaction().commit();
        
        pm.close();
        return this;

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            Iterator it = results.iterator();
            while(it.hasNext()){
                Form f = (Form) it.next();
                logger.log(BasicLevel.INFO, "\t- form.id=" + f.getId());
            }
            query.closeAll();
        } catch (Exception e) {
            logger.log(BasicLevel.ERROR, e);
        } finally {
            pm.evictAll();
            pm.close();

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