Examples of org.apache.ojb.broker.Identity

org.apache.ojb.broker.Identity
Represents the identity of an object.
It's composed of:
- class of the real object
- top-level class of the real object (could be an abstract class or interface or the class of the object itself), used to make an object unique across extent classes
- an array of all primary key value objects
- a flag which indicates whether this is a transient Identity (identity of a non-persistent, "new" object) or a persistent Identity (identity object of a persistent, "already written to datastore" object).
To create Identity objects it's strongly recommended to use the {@link IdentityFactory}, because in future releases of OJB the Identity constructors will be no longer reachable or forbidden to use.

NOTE: An Identity object must be unique accross extents. Means all objects with the same top-level class need unique PK values.
@see org.apache.ojb.broker.IdentityFactory @author Thomas Mahler @version $Id: Identity.java,v 1.36.2.14 2005/12/21 22:22:07 tomdz Exp $

     * @return the resulting ObjectEnvelope
     */
    public ObjectEnvelope get(Object pKey, boolean isNew)
    {
        PersistenceBroker broker = transaction.getBroker();
        Identity oid = broker.serviceIdentity().buildIdentity(pKey);
        return get(oid, pKey, isNew);
    }

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                    }
                    else
                    {
                        rt = new RuntimeObject(depObj, getTransaction());
                    }
                    Identity oid = rt.getIdentity();
                    if(!alreadyPrepared.contains(oid))
                    {
                        ObjectEnvelope depMod = getByIdentity(oid);
                        // if the object isn't registered and is a new object, register it
                        // else we have nothing to do

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                {
                    Object colObj = it.next();
                    if(colObj != null)
                    {
                        RuntimeObject rt = new RuntimeObject(colObj, getTransaction());
                        Identity oid = rt.getIdentity();
                        /*
                        arminw:
                        only when the main object need insert we start with FK assignment
                        of the 1:n and m:n relations. If the main objects need update (was already persisted)
                        it should be handled by the object state detection in ObjectEnvelope

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            if(getTransaction().cascadeDeleteFor(ord))
            {
                Object depObj = ord.getPersistentField().get(source.getObject());
                if(depObj != null)
                {
                    Identity oid = getTransaction().getBroker().serviceIdentity().buildIdentity(depObj);
                    // if(!isNewAssociatedObject(oid) && !alreadyPrepared.contains(oid))
                    // if the object has a new association with a different object, don't delete it
                    if(!isNewAssociatedObject(oid))
                    {
                        ObjectEnvelope depMod = get(oid, depObj, false);

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            {
                Iterator it = BrokerHelper.getCollectionIterator(collOrArray);
                while(it.hasNext())
                {
                    Object colObj = ProxyHelper.getRealObject(it.next());
                    Identity oid = pb.serviceIdentity().buildIdentity(colObj);
                    ObjectEnvelope colMod = get(oid, colObj, false);
                    if(cascadeDelete)
                    {
                        colMod.setModificationState(colMod.getModificationState().markDelete());
                        cascadeDeleteFor(colMod, alreadyPrepared);

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     * Replace the current with a new generated identity object and
     * returns the old one.
     */
    public Identity refreshIdentity()
    {
        Identity oldOid = getIdentity();
        this.oid = getBroker().serviceIdentity().buildIdentity(myObj);
        return oldOid;
    }

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    public void doInsert()
    {
        if(log.isDebugEnabled()) log.debug("Start INSERT action for " + getIdentity());
        performLinkEntries();
        getBroker().store(getObject(), getIdentity(), getClassDescriptor(), true, true);
        Identity oldOid = refreshIdentity();
        buffer.replaceRegisteredIdentity(getIdentity(), oldOid);
    }

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   * If now writer exists, null is returned.
   */
  public LockEntry getWriter(Object obj)
  {
    PersistenceBroker broker = getBroker();
    Identity oid = new Identity(obj, broker);
    
        LockEntry result = null;
        try
        {
          result = getWriterRemote(oid);

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  public Collection getReaders(Object obj)
  {
    Collection result = null;
        try
        {
            Identity oid = new Identity(obj, getBroker());
            byte selector = (byte) 'r';
            byte[] requestBarr = buildRequestArray(oid, selector);
            
            HttpURLConnection conn = getHttpUrlConnection();

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   */
  public boolean addReader(TransactionImpl tx, Object obj)
  {
    try
    {
      LockEntry lock = new LockEntry(new Identity(obj,getBroker()).toString(),
          tx.getGUID(),
          System.currentTimeMillis(),
          LockStrategyFactory.getIsolationLevel(obj),
          LockEntry.LOCK_READ);
            addReaderRemote(lock);

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