Class WrappedNodeManager

java.lang.Object
helma.objectmodel.db.WrappedNodeManager

public final class WrappedNodeManager extends Object
A wrapper around NodeManager that catches most Exceptions, or rethrows them as RuntimeExceptions. The idea behind this is that we don't care a lot about Exception classes, since Hop programming is done in JavaScript which doesn't know about them (except for the exception message).
  • Constructor Details

    • WrappedNodeManager

      public WrappedNodeManager(NodeManager nmgr)
      Creates a new WrappedNodeManager object.
      Parameters:
      nmgr - ...
  • Method Details

    • getNode

      public Node getNode(String id, DbMapping dbmap)
      Get a node given its id and DbMapping
      Parameters:
      id -
      dbmap -
      Returns:
    • getNode

      public Node getNode(Key key)
      Get a node given its key
      Parameters:
      key -
      Returns:
    • getNode

      public Node getNode(Node home, String id, Relation rel)
      Get the node specified by the given id and Relation.
      Parameters:
      home -
      id -
      rel -
      Returns:
    • getNodes

      public List getNodes(Node home, Relation rel)
      Get the list of nodes contained in the collection of the given Node specified by the given Relation.
      Parameters:
      home -
      rel -
      Returns:
    • getNodeIDs

      public List getNodeIDs(Node home, Relation rel)
      Get a list of IDs of nodes contained in the given Node's collection specified by the given Relation.
      Parameters:
      home -
      rel -
      Returns:
    • countNodes

      public int countNodes(Node home, Relation rel)
      Count the nodes contained in the given Node's collection specified by the given Relation.
      Parameters:
      home -
      rel -
      Returns:
    • prefetchNodes

      public void prefetchNodes(Node node, Relation rel, SubnodeList list, int start, int length)
    • deleteNode

      public void deleteNode(Node node)
      Delete a node from the database
      Parameters:
      node -
    • getPropertyNames

      public Vector getPropertyNames(Node home, Relation rel)
      Get a list of property names from the given node. TODO: this retrieves access names of child nodes, not property names
      Parameters:
      home -
      rel -
      Returns:
    • registerNode

      public void registerNode(Node node)
      Register a node with the object cache using its primary key.
      Parameters:
      node -
    • registerNode

      public void registerNode(Node node, Key key)
      Register a node with the object cache using the given key.
      Parameters:
      node -
    • evictNode

      public void evictNode(Node node)
      Evict a node from the object cache
      Parameters:
      node -
    • evictNodeByKey

      public void evictNodeByKey(Key key)
      Completely evict the object with the given key from the object cache
      Parameters:
      key -
    • evictKey

      public void evictKey(Key key)
      Evict the object with the given key from the object cache
      Parameters:
      key -
    • generateID

      public String generateID(DbMapping map)
      Generate a new id for an object specified by the DbMapping
      Parameters:
      map - the DbMapping to generate an id for
      Returns:
      a new unique id
    • getRootNode

      public Node getRootNode()
      Gets the application's root node.
    • isRootNode

      public boolean isRootNode(Node node)
      Checks if the given node is the application's root node.
    • getCacheEntries

      public Object[] getCacheEntries()
      Get an array of all objects in the object cache
    • logEvent

      public void logEvent(String msg)
      Write an entry to the application's event log
      Parameters:
      msg - event message
    • getDbMapping

      public DbMapping getDbMapping(String name)
      Get the DbMapping corresponding to a type name
      Parameters:
      name - a type name
      Returns:
      the corresponding DbMapping