nodeseti.java

pastry的java实现的2.0b版

/*************************************************************************

"FreePastry" Peer-to-Peer Application Development Substrate 

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package rice.pastry;

import java.util.*;

/**
 * An interface to a generic set of nodes.
 *
 * @version $Id: NodeSetI.java 3274 2006-05-15 16:17:47Z jeffh $
 * @author Andrew Ladd
 */

public interface NodeSetI extends rice.p2p.commonapi.NodeHandleSet {
  /**
   * Puts a NodeHandle into the set.
   *
   * @param handle the handle to put.
   * @return true if the put succeeded, false otherwise.
   */

  public boolean put(NodeHandle handle);

  /**
   * Finds the NodeHandle associated with the NodeId.
   *
   * @param nid a node id.
   * @return the handle associated with that id or null if no such handle is
   *      found.
   */

  public NodeHandle get(Id nid);


  /**
   * Gets the ith element in the set.
   *
   * @param i an index.
   * @return the handle associated with that id or null if no such handle is
   *      found.
   */

  public NodeHandle get(int i);

  /**
   * Verifies if the set contains this particular id.
   *
   * @param nh DESCRIBE THE PARAMETER
   * @return true if that node id is in the set, false otherwise.
   */

  public boolean member(NodeHandle nh);

  /**
   * Removes a node id and its handle from the set.
   *
   * @param nh DESCRIBE THE PARAMETER
   * @return the node handle removed or null if nothing.
   */

  public NodeHandle remove(NodeHandle nh);

  /**
   * Gets the size of the set.
   *
   * @return the size.
   */

  public int size();

  /**
   * Gets the index of the element with the given node id.
   *
   * @param nid the node id.
   * @return the index or throws a NoSuchElementException.
   * @exception NoSuchElementException DESCRIBE THE EXCEPTION
   */

  public int getIndex(Id nid) throws NoSuchElementException;

  /**
   * Gets the Index attribute of the NodeSetI object
   *
   * @param nh DESCRIBE THE PARAMETER
   * @return The Index value
   * @exception NoSuchElementException DESCRIBE THE EXCEPTION
   */
  public int getIndex(NodeHandle nh) throws NoSuchElementException;
}