Examples of DList

com.sun.enterprise.util.collection.DList
A DList is an implementation of an unsynchronized doubly linked list. Unlike java.util.LinkedList, each node in the DList (DListNode) can be delinked in constant time. However, to do this the application must have the reference of the node to be delinked. DLists are exrtemely usefull if nodes are removed/inserted quite frequently. DList is used in the implementation of com.sun.enterprise.util.cache.AdaptiveCache.
net.aufdemrand.denizen.objects.dList
org.odmg.DList
The ODMG List collection. A DList collection is an ordered collection that provides efficient insertion and removal of elements at arbitrary positions in the list, but it also supports indexed access. The beginning index value is 0. When an element is added at a given position in the list, the index of all subsequent elements is increased by 1. Similarly, when an element is removed from the list, the index of all subsequent elements is decreased by 1.
All of the operations defined by the JavaSoft List interface are supported by an ODMG implementation of DList, the exception UnsupportedOperationException is not thrown when a call is made to any of the List methods. @author David Jordan (as Java Editor of the Object Data Management Group) @version ODMG 3.0

Examples of org.odmg.DList


            // Check stored objects
            OQLQuery query = odmg.newOQLQuery();
            query.create("select masters from " + Master.class.getName() + " where masterText like $1");
            query.bind("%" + timestamp);
            DList allMasters = (DList) query.execute();
            assertEquals("We should found master objects", 2, allMasters.size());
            Master lookup_1 = (Master) allMasters.get(0);
            Collection col_in = lookup_1.getCollDetailFKinPK();
            Collection col_no = lookup_1.getCollDetailFKnoPK();
            assertEquals("Should found none " + DetailFKnoPK.class.getName() + " objects", 0, col_no.size());
            assertEquals("Should found " + DetailFKinPK.class.getName() + " objects", 5, col_in.size());
        }

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Examples of org.odmg.DList


            tx.begin();
            OQLQuery query = odmg.newOQLQuery();
            query.create("select masters from " + Master.class.getName() + " where masterText like $1");
            query.bind("%" + timestamp);
            DList allMasters = (DList) query.execute();


            // Iterator over all Master objects
            Iterator it = allMasters.iterator();
            int counter = 0;
            while (it.hasNext())
            {
                ++counter;
                Master aMaster = (Master) it.next();
                Iterator it2 = aMaster.collDetailFKinPK.iterator();
                while (it2.hasNext())
                    database.deletePersistent(it2.next());
                it2 = aMaster.collDetailFKnoPK.iterator();
                while (it2.hasNext())
                    database.deletePersistent(it2.next());
                database.deletePersistent(aMaster);
            }
            tx.commit();
            assertEquals("Wrong count of Master objects found", 4, counter);


            query = odmg.newOQLQuery();
            query.create("select masters from " + Master.class.getName() + " where masterText like $1");
            query.bind("%" + timestamp);
            allMasters = (DList) query.execute();
            assertEquals("Delete of Master objects failed", 0, allMasters.size());


            database.close();
        }
        finally
        {

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Examples of org.odmg.DList

        {
            tx.begin();


            OQLQuery query = odmg.newOQLQuery();
            query.create("select x from " + Article.class.getName() + " where productGroupId = 7");
            DList results = (DList) query.execute();


            int originalSize = results.size();
            assertTrue("result count have to be > 0", originalSize > 0);


//            OJB.getLogger().debug(results);


            String name = "gimme fruits_" + System.currentTimeMillis();


            db.bind(results, name);
            tx.commit();


            tx = odmg.newTransaction();
            tx.begin();


            ((TransactionImpl) tx).getBroker().clearCache();


            // look it up again
            DList newResults = (DList) db.lookup(name);


            assertEquals(originalSize, newResults.size());
            Article art = (Article) newResults.get(0);
            assertNotNull(art);
//            OJB.getLogger().info(results);


            tx.commit();

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Examples of org.odmg.DList

    }


    protected int getObjectCount(Implementation ojb, Class target)
    {
        if(log.isDebugEnabled()) log.debug("getObjectCount was called");
        DList list;
        try
        {
            OQLQuery query = ojb.newOQLQuery();
            query.create("select allObjects from " + target.getName());
            list = (DList) query.execute();
            return list.size();
        }
        catch (QueryException e)
        {
            throw new EJBException("Query objects failed", e);
        }

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Examples of org.odmg.DList

            ((HasBroker) tx).getBroker().clearCache();
            OQLQuery qry = odmg.newOQLQuery();
            qry.create("select a from " + PersonImpl.class.getName() + " where firstname=$1");
            qry.bind("Kevin");


            DList result = (DList) qry.execute();
            Person boy = (Person) result.get(0);
            assertEquals(boy.getFirstname(), kevin.getFirstname());
            assertEquals(boy.getFather().getFirstname(), dad.getFirstname());
            assertEquals(boy.getMother().getFirstname(), mum.getFirstname());


            tx.commit();

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Examples of org.odmg.DList

        TransactionExt tx = (TransactionExt) odmg.newTransaction();
        //bind object to name
        tx.begin();


        // get new DList instance
        DList dlist = odmg.newDList();
        Article a1 = createArticle();
        Article a2 = createArticle();
        Article a3 = createArticle();
        dlist.add(a1);
        dlist.add(a2);
        dlist.add(a3);
        database.bind(dlist, bindingName);
        // lookup the named object - DList
        List value = (List) database.lookup(bindingName);
        assertNotNull("Could not lookup object for binding name: "+bindingName, value);
        tx.commit();

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Examples of org.odmg.DList

        final String name = "testAdding_" + System.currentTimeMillis();


        TransactionExt tx = (TransactionExt) odmg.newTransaction();
        tx.begin();
        // create DList and bound by name
        DList list = odmg.newDList();
        database.bind(list, name);
        tx.commit();


        tx.begin();
        tx.getBroker().clearCache();
        Object obj = database.lookup(name);
        tx.commit();
        assertNotNull("binded DList not found", obj);


        tx.begin();
        // add objects to list
        for (int i = 0; i < 5; i++)
        {
            DObject a = createObject(name);
            list.add(a);
        }
        tx.commit();


        // check current list
        Iterator iter = list.iterator();
        while (iter.hasNext())
        {
            DObject a = (DObject) iter.next();
            assertNotNull(a);
        }


        tx.begin();
        tx.getBroker().clearCache();


        // lookup list and check entries
        DList lookedUp = (DList) database.lookup(name);
        assertNotNull("binded DList not found", lookedUp);


        //System.out.println("sequence of items in lookedup list:");
        iter = lookedUp.iterator();
        Iterator iter1 = list.iterator();
        while (iter.hasNext())
        {
            DObject a = (DObject) iter.next();
            DObject b = (DObject) iter1.next();
            assertNotNull(a);
            assertNotNull(b);
            assertEquals(a.getId(), b.getId());
        }
        tx.commit();


        // add new entries to list
        tx.begin();
        for (int i = 0; i < 3; i++)
        {
            DObject a = createObject(name + "_new_entry");
            list.add(a);
        }
        tx.commit();


        tx.begin();
        tx.getBroker().clearCache();
        lookedUp = (DList) database.lookup(name);
        iter = lookedUp.iterator();
        iter1 = list.iterator();
        assertEquals("Wrong number of DListEntry found", 8, list.size());
        while (iter.hasNext())
        {
            DObject a = (DObject) iter.next();

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Examples of org.odmg.DList

        final String name = "testRemoveAdd_" + System.currentTimeMillis();


        TransactionExt tx = (TransactionExt) odmg.newTransaction();
        tx.begin();
        // create DList and bound by name
        DList list = odmg.newDList();
        database.bind(list, name);


        // add object to list
        for (int i = 0; i < 5; i++)
        {
            DObject a = createObject(name);
            list.add(a);
        }
        tx.commit();


        // check current list
        Iterator iter = list.iterator();
        while (iter.hasNext())
        {
            DObject a = (DObject) iter.next();
            assertNotNull(a);
        }


        tx.begin();
        tx.getBroker().clearCache();


        // lookup list and check entries
        DList lookedUp = (DList) database.lookup(name);
        assertNotNull("binded DList not found", lookedUp);


        //System.out.println("sequence of items in lookedup list:");
        iter = lookedUp.iterator();
        Iterator iter1 = list.iterator();
        while (iter.hasNext())
        {
            DObject a = (DObject) iter.next();
            DObject b = (DObject) iter1.next();
            assertNotNull(a);
            assertNotNull(b);
            assertEquals(a.getId(), b.getId());
        }
        tx.commit();


        // add and remove new entries
        tx.begin();
        for (int i = 0; i < 3; i++)
        {
            DObject a = createObject(name + "_new_entry_NOT_PERSIST");
            list.add(a);
            list.remove(list.size()-1);
        }
        tx.commit();




        tx.begin();
        tx.getBroker().clearCache();
        lookedUp = (DList) database.lookup(name);
        iter = lookedUp.iterator();
        iter1 = list.iterator();
        assertEquals("Wrong number of DListEntry found", 5, list.size());
        while (iter.hasNext())
        {
            DObject a = (DObject) iter.next();
            DObject b = (DObject) iter1.next();
            assertNotNull(a);
            assertNotNull(b);
            assertEquals(a.getId(), b.getId());
        }
        tx.commit();
        assertNotNull("binded DList not found", lookedUp);




        tx.begin();
        for (int i = 0; i < 3; i++)
        {
            DObject a = createObject(name + "_new_entry_new_persist");
            list.add(a);
            list.remove(0);
        }
        tx.commit();


        tx.begin();
        tx.getBroker().clearCache();
        lookedUp = (DList) database.lookup(name);
        iter = lookedUp.iterator();
        iter1 = list.iterator();
        assertEquals("Wrong number of DListEntry found", 5, list.size());
        while (iter.hasNext())
        {
            DObject a = (DObject) iter.next();

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Examples of org.odmg.DList

        // create a unique name:
        String name = "testRemoving_" + System.currentTimeMillis();


        Transaction tx = odmg.newTransaction();
        tx.begin();
        DList list = odmg.newDList();
        // bind the list to the name:
        database.bind(list, name);


        for (int i = 0; i < 5; i++)
        {
            DObject a = createObject(name);
            list.add(a);
        }
        assertEquals(5, list.size());
        tx.commit();


        // delete two items
        tx = odmg.newTransaction();
        tx.begin();
        ((HasBroker) odmg.currentTransaction()).getBroker().clearCache();
        DList lookedUp = (DList) database.lookup(name);
        assertNotNull("database lookup does not find the named DList", lookedUp);
        assertEquals("Wrong number of list entries", 5, lookedUp.size());
        lookedUp.remove(2);
        lookedUp.remove(1);
        tx.commit();


        // check if deletion was successful
        tx = odmg.newTransaction();
        tx.begin();
        ((HasBroker) odmg.currentTransaction()).getBroker().clearCache();
        lookedUp = (DList) database.lookup(name);
        tx.commit();


        assertEquals(3, lookedUp.size());
    }

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Examples of org.odmg.DList

        // create a unique name:
        String name = "testAddingWithIndex_" + System.currentTimeMillis();


        Transaction tx = odmg.newTransaction();
        tx.begin();
        DList list = odmg.newDList();
        database.bind(list, name);
        tx.commit();


        tx = odmg.newTransaction();
        tx.begin();
        for (int i = 0; i < 5; i++)
        {
            DObject a = createObject(name);
            list.add(a);
        }


        list.add(2, createObject(name+"_pos2"));
        list.add(0, createObject(name+"_pos0"));
        list.add(7, createObject(name+"_pos7"));
        tx.commit();


        tx.begin();
        ((TransactionImpl) tx).getBroker().clearCache();
        // System.out.println("list: " + list);
        // System.out.println("lookup list: " + db.lookup(name));
        tx.commit();


        //System.out.println("sequence of items in list:");
        Iterator iter = list.iterator();
        DObject a;
        while (iter.hasNext())
        {
            a = (DObject) iter.next();
            assertNotNull(a);
            //System.out.print(a.getArticleId() + ", ");
        }




        tx = odmg.newTransaction();
        tx.begin();
        ((TransactionImpl) tx).getBroker().clearCache();
        DList lookedUp = (DList) database.lookup(name);
        // System.out.println("lookup list: " + lookedUp);
        assertNotNull("database lookup does not find DList", lookedUp);
        assertEquals(8, lookedUp.size());
        iter = lookedUp.iterator();
        while (iter.hasNext())
        {
            a = (DObject) iter.next();
        }
        tx.commit();

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