/**
* Adds attributes to node.<p>
* If one or more attributes with the same name exists
* the old attribute/s with the same name will be override.
* @param entityId
* @param attributes
*/
public void addAttributes(int entityId, NodeAttribute[] attributes)
{
try{
reentrantLock.enter();
Node node=getNode(entityId);
ByteArrayToAttributeyMap nodeAttributes = node.getAttributes();
foreach (NodeAttribute attribute in attributes) {
nodeAttributes.put(attribute.getName(),attribute);
}
}finally {
reentrantLock.exit();
}
}
/**
* addAttribute method;
* Add attribute
* using this method ensure that the server has have accepted
* the attribute addition, and it also ensure that all the clients will
* receive the change by the same sequence in which the server has.
* But it is impossible predict the change acceptance time in the remote
* clients because of networks limits.
* @param node
* @param attributes
* @throws AbstractPlanckDBException
*/
public void AddAttributes(Node node, NodeAttribute[] attributes)
{
List<NodeAttribute> values = node.getAttributes().values();
NodeAttribute[] oldAttributes = values.ToArray();
Command command = commandBuilder.buildAddAttributes(node.getId(), sessionMetaData.getSchemaId(), core.getCoreManager().getKey(), sessionMetaData.GetSessionId(), lockTimeout ,attributes);
command.Push(PlanckDBConstants.OLD_ATTRIBUTES,PlanckDBConstants.ATTRIBUTE_MAP,oldAttributes);
commandExecutor.produce(command);
}
/**
* createNode method:
* Creates new node:
* Creating node by this method ensure that the server has have accepted
* the node creation, and it also ensure that all the clients will
* receive the change by the same sequence in which the server has received.
* But it is impossible predict the change acceptance time in the remote
* clients because of networks limits.
* @param attributes
* @return
* @throws PlanckDBException
* @throws TransactionException
*/
public Node CreateNode(NodeAttribute[]attributes)
{
Command command = commandBuilder.buildCreateNode(false, sessionMetaData.getSchemaId(), core.getCoreManager().getKey(), sessionMetaData.GetSessionId(), lockTimeout,attributes);
commandExecutor.produce(command);
Int32 entityId = command.getEntityId();
return registry.getNode(entityId);
}
/**
* Clear the attributes container ans sets new attributes<p>
* return all the attributes which name doesn't exit in the new attributes list ( removed attributes ).
*
* @param entityId
* @param attributesArray
* @return
*/
public List<NodeAttribute> updateNode(int entityId, NodeAttribute[] attributesArray)
{
List<NodeAttribute> removed=new List<NodeAttribute>();
try{
reentrantLock.enter();
Node node=getNode(entityId);
foreach (NodeAttribute oldAttribute in node.getAttributes().values()) {
bool found=false;
foreach (NodeAttribute newAttribute in attributesArray) {
if(Arrays.equals(oldAttribute.getName(),newAttribute.getName())){
found=true;
break;
}
}
if(! found){
node.getAttributes().remove(oldAttribute.getName());
removed.Add(oldAttribute);
}
}
foreach (NodeAttribute attribute in attributesArray) {
node.getAttributes().put(attribute.getName(),attribute);
}
}finally {
reentrantLock.exit();
}
return removed;
}
/**
* Create new node.
* @param entityId
* @param lock
* @param sessionId
* @param ownerId
* @param attributes
* @return
*/
public Node createNewNode(int entityId, bool lockEntity,int sessionId,int ownerId,NodeAttribute[]attributes)
{
try{
reentrantLock.enter();
Node node=new Node(entityId, lockEntity,sessionId,ownerId,attributes);
idMap[entityId]=node;
return node;
}finally {
reentrantLock.exit();
}
}
public NodeAttribute put(byte[] name, NodeAttribute attribute)
{
return map[new ByteArrayWrapper(name)] = attribute;
}
public bool containsValue(NodeAttribute attribute)
{
return map.ContainsValue(attribute);
}