import java.util.Hashtable;
+import org.vamsas.objects.core.VAMSAS;
+import org.vamsas.objects.core.VamsasDocument;
+
/**
- * @author jimp
- * Contains a collection of vamsas objects and reference
- * to a specified ClientHandle's information.
+ * @author jimp Contains a collection of vamsas objects and reference to a
+ * specified ClientHandle's information.
*/
public class ClientDocument implements IClientDocument {
- IClient vorba;
- /* (non-Javadoc)
+ protected IClient vorba;
+ protected org.vamsas.objects.core.VAMSAS[] roots;
+ protected byte[] appData;
+
+ /**
+ * collection of org.vamsas.client.object references
+ */
+ protected Hashtable vamsasObjects;
+
+ /*
+ * (non-Javadoc)
+ *
* @see org.vamsas.client.IClientDocument#getApplicationData()
*/
+
+ /**
+ *
+ * @param data
+ * @param doc
+ * @param objects
+ * @param vorba
+ */
+ protected ClientDocument(byte[] data, VAMSAS[] roots, Hashtable objects, IClient vorba) {
+ // TODO Auto-generated constructor stub
+ appData = data;
+ this.roots =roots;
+ vamsasObjects = objects;
+ this.vorba = vorba;
+ }
+
public byte[] getApplicationData() {
// Look up client byte stash using client and user handle
-
- return null;
+ return appData;
}
- /* (non-Javadoc)
+
+ /*
+ * (non-Javadoc)
+ *
* @see org.vamsas.client.IClientDocument#getObject(org.vamsas.client.VorbaId)
*/
public object getObject(VorbaId id) {
// retrieve object and return
return null;
}
- /* (non-Javadoc)
+
+ /*
+ * (non-Javadoc)
+ *
* @see org.vamsas.client.IClientDocument#getObjects(org.vamsas.client.VorbaId[])
*/
public object[] getObjects(VorbaId[] ids) {
// getObject in bulk
return null;
}
- /* (non-Javadoc)
+
+ /*
+ * (non-Javadoc)
+ *
* @see org.vamsas.client.IClientDocument#getVamsasRoots()
*/
public object[] getVamsasRoots() {
// extract root objects
- return null;
+ if (roots == null)
+ return new VAMSAS[] { new VAMSAS() };
+ return roots;
+ }
+
+ /**
+ * update the document with new roots.
+ */
+ public void setVamsasRoots(VAMSAS[] newroots) {
+ // extract root objects
+ if (newroots != null) {
+ // check newroots for objects that were present in the old document
+ // check to see if the 'old' objects have been modified
+ // if they have ? we overwrite them with their new version, ensuring that
+ // provenance is updated.
+ // if they haven't ? do nothing ?
+
+ for (int i = 0, k = newroots.length; i < k; i++) {
+ if (newroots[i].isRegistered()) {
+ // easy - just check if anything has changed and do provenance
+ object oldversion = getObject(newroots[i].getVorbaId());
+ if (oldversion instanceof VAMSAS) {
+ // TODO: appropriate merging behaviour when two clients have
+ // modified the same registered object independently
+ if (newroots[i].get__last_hash() != newroots[i].hashCode()) {
+ // client has modified this object since last retrieval.
+ if (newroots[i].get__last_hash() != oldversion.get__last_hash()) {
+ // object has been modified by another client since this
+ // client's
+ // last access to document.
+ }
+ }
+ } else {
+ throw new Error(
+ "SimpleClient error when using setVamsasRoots : The vorbaId for object "
+ + i
+ + " does not refer to an object of type VAMSAS in the current document!");
+ }
+ } else {
+ if (!newroots[i].is__stored_in_document()) {
+ // check if object is modified
+ if (newroots[i].get__last_hash() != newroots[i].hashCode()) {
+ // it is - so we add newroots[i] as a new object, with updated
+ // provenance.
+ } else {
+ // do nothing
+ newroots[i] = null;
+ }
+ } else {
+ // just add newroots[i] as a new object in the document
+ // - with appropriate provenance.
+ }
+ }
+ }
+ }
}
- /* (non-Javadoc)
+
+ /*
+ * (non-Javadoc)
+ *
* @see org.vamsas.client.IClientDocument#registerObject(org.vamsas.client.object)
*/
- public VorbaId registerObject(object unregistered) {
- // TODO Auto-generated method stub
- return null;
+public VorbaId registerObject(object unregistered) {
+ if (!unregistered.isRegistered())
+ unregistered.setVorbaId(unregistered.__vorba.makeVorbaId());
+ return unregistered.getVorbaId();
}
- /* (non-Javadoc)
+ /*
+ * (non-Javadoc)
+ *
* @see org.vamsas.client.IClientDocument#registerObjects(org.vamsas.client.object[])
*/
public VorbaId[] registerObjects(object[] unregistered) {
- // TODO Auto-generated method stub
+ if (unregistered!=null) {
+ VorbaId ids[] = new VorbaId[unregistered.length];
+ for (int i=0,k=unregistered.length; i<k; i++)
+ ids[i]=registerObject(unregistered[i]);
+ return ids;
+ }
return null;
}
- /* (non-Javadoc)
+
+ /*
+ * (non-Javadoc)
+ *
* @see org.vamsas.client.IClientDocument#setApplicationData(byte[])
*/
public void setApplicationData(byte[] newData) {
- // TODO Auto-generated method stub
-
+ appData = newData;
}
- /**
- * collection of org.vamsas.client.objects
- */
- Hashtable VamsasObjects;
- byte[] appData;
}