Examples of org.exist.numbering.NodeIdFactory

org.exist.numbering.NodeIdFactory
A factory for creating node ids. To support different numbering schemes, NodeId instances should always be created through this interface. The NodeIdFactory for the current database instance can be retrieved from {@link org.exist.storage.BrokerPool#getNodeFactory()}.


    private void computeNodeIds() throws EXistException {
        if (nodeId[0] != null) {
            return;
        }
        final NodeIdFactory nodeFactory = getDatabase().getNodeFactory();
        nodeId[0] = nodeFactory.documentNodeId();
        if (size == 1) {
            return;
        }
        NodeId nextId = nodeFactory.createInstance();
        NodeImpl next = (NodeImpl)getFirstChild();
        while (next != null) {
            computeNodeIds(nextId, next.nodeNumber);
            next = (NodeImpl)next.getNextSibling();
            nextId = nextId.nextSibling();

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  private BrokerPool pool;
  
  public void testAdd() {    
    BrokerPool.FORCE_CORRUPTION = false;
    DBBroker broker = null;
    NodeIdFactory idFact = pool.getNodeFactory();
    try {
      System.out.println("Add some random data and force db corruption ...\n");
      broker = pool.get(pool.getSecurityManager().getSystemSubject());
      assertNotNull(broker);
      //TODO : is this necessary ?
            broker.flush();
      TransactionManager mgr = pool.getTransactionManager();
      assertNotNull(mgr);
      Txn txn = mgr.beginTransaction();
      assertNotNull(txn);
      System.out.println("Transaction started ...");
            
            DOMFile domDb = ((NativeBroker) broker).getDOMFile();
            assertNotNull(domDb);
            domDb.setOwnerObject(this);
            
            // put 1000 values into the btree
            long firstToRemove = -1;
            for (int i = 1; i <= 10000; i++) {
                byte[] data = ("Value" + i).getBytes();
                NodeId id = idFact.createInstance(i);
                long addr = domDb.put(txn, new NativeBroker.NodeRef(500, id), data);
//              TODO : test addr ?
                if (i == 1)
                    firstToRemove = addr;
            }


            domDb.closeDocument();
            
            // remove all
            NativeBroker.NodeRef ref = new NativeBroker.NodeRef(500);
            assertNotNull(ref);
            IndexQuery idx = new IndexQuery(IndexQuery.TRUNC_RIGHT, ref);
            assertNotNull(idx);
            domDb.remove(txn, idx, null);
            domDb.removeAll(txn, firstToRemove);
            
            // put some more
            for (int i = 1; i <= 10000; i++) {
                byte[] data = ("Value" + i).getBytes();
                @SuppressWarnings("unused")
        long addr = domDb.put(txn, new NativeBroker.NodeRef(500, idFact.createInstance(i)), data);
//              TODO : test addr ?
            }
            
            domDb.closeDocument();
            mgr.commit(txn);
            System.out.println("Transaction commited ...");
            
            txn = mgr.beginTransaction();
            System.out.println("Transaction started ...");
            
            // put 1000 new values into the btree
            for (int i = 1; i <= 1000; i++) {
                byte[] data = ("Value" + i).getBytes();
                long addr = domDb.put(txn, new NativeBroker.NodeRef(501, idFact.createInstance(i)), data);
//              TODO : test addr ?                
                if (i == 1)
                    firstToRemove = addr;
            }            
            
            domDb.closeDocument();
            mgr.commit(txn);
            System.out.println("Transaction commited ...");
            
            // the following transaction is not committed and will be rolled back during recovery
            txn = mgr.beginTransaction();
            System.out.println("Transaction started ...");
            
            for (int i = 1; i <= 200; i++) {
                domDb.remove(txn, new NativeBroker.NodeRef(500, idFact.createInstance(i)));
            }


            idx = new IndexQuery(IndexQuery.TRUNC_RIGHT, new NativeBroker.NodeRef(501));
            domDb.remove(txn, idx, null);
            domDb.removeAll(txn, firstToRemove);

View Full Code Here

    
    public void testAdd() {
        System.out.println("Add some random data and force db corruption ...\n");
        
        TransactionManager mgr = pool.getTransactionManager();
        NodeIdFactory idFact = pool.getNodeFactory();
        DBBroker broker = null;
        try {
            broker = pool.get(pool.getSecurityManager().getSystemSubject());
            broker.flush();
            Txn txn = mgr.beginTransaction();
            System.out.println("Transaction started ...");
            
            DOMFile domDb = ((NativeBroker) broker).getDOMFile();
            domDb.setOwnerObject(this);
            
            BrokerPool.FORCE_CORRUPTION = true;
            
            // put 1000 values into the btree
            NodeId id;
            for (int i = 1; i < 1001; i++) {
              id = idFact.createInstance(i);
                domDb.addValue(txn, new NativeBroker.NodeRef(500, id), i);
            }
            
            IndexQuery idx = new IndexQuery(IndexQuery.GT, new NativeBroker.NodeRef(500, idFact.createInstance(800)));
            domDb.remove(txn, idx, null);
            
            mgr.commit(txn);
            
            // start a dirty, uncommitted transaction. This will be rolled back by the recovery.
            txn = mgr.beginTransaction();
            
            for (int i = 801; i < 2001; i++) {
                domDb.addValue(txn, new NativeBroker.NodeRef(500, idFact.createInstance(i)), i);
            }
            
            for (int i = 101; i < 301; i++) {
                domDb.addValue(txn, new NativeBroker.NodeRef(500, idFact.createInstance(i)), i * 3);
            }
            
            idx = new IndexQuery(IndexQuery.GT, new NativeBroker.NodeRef(500, idFact.createInstance(600)));
            domDb.remove(txn, idx, null);
            
            mgr.getJournal().flushToLog(true);
            
            Writer writer = new StringWriter();

View Full Code Here

    
    public void testGet() {
        System.out.println("Recover and read the data ...\n");
        @SuppressWarnings("unused")
    TransactionManager mgr = pool.getTransactionManager();
        NodeIdFactory idFact = pool.getNodeFactory();
        DBBroker broker = null;
        try {
            broker = pool.get(pool.getSecurityManager().getSystemSubject());
            
            DOMFile domDb = ((NativeBroker) broker).getDOMFile();
            domDb.setOwnerObject(this);
            
            IndexQuery query = new IndexQuery(IndexQuery.GEQ, new NativeBroker.NodeRef(500, idFact.createInstance(1)));
            domDb.query(query, new IndexCallback());
            System.out.println("Found: " + count);
            assertEquals(count, 800);
            
            Writer writer = new StringWriter();

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Related Classes of org.exist.numbering.NodeIdFactory

org.exist.memtree.DocumentImpl

org.exist.storage.BTreeRecoverTest

org.exist.storage.DOMFileRecoverTest

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