Package netscape.ldap

Class LDAPResponseListener

java.lang.Object
netscape.ldap.LDAPResponseListener
All Implemented Interfaces:
Serializable

public class LDAPResponseListener extends Object
Represents the message queue associated with a particular LDAP operation or operations.
See Also:
  • Method Details

    • getResponse

      public LDAPResponse getResponse() throws LDAPException
      Blocks until a response is available, or until all operations associated with the object have completed or been canceled, and returns the response.
      Returns:
      a response for an LDAP operation or null if there are no more outstanding requests.
      Throws:
      LDAPException - Network error exception
      LDAPInterruptedException - The invoking thread was interrupted
    • merge

      public void merge(LDAPResponseListener listener2)
      Merge two response listeners. Move/append the content from another response listener to this one.

      To be used for synchronization of asynchronous LDAP operations where requests are sent by one thread but processed by another one.

      A client may be implemented in such a way that one thread makes LDAP requests and calls l.getMessageIDs(), while another thread is responsible for processing of responses (call l.getResponse()). Both threads are using the same listener objects. In such a case, a race condition may occur, where a LDAP response message is retrieved and the request terminated (request ID removed) before the first thread has a chance to execute l.getMessageIDs(). The proper way to handle this scenario is to create a separate listener for each new request, and after l.getMessageIDs() has been invoked, merge the new request with the existing one.

      Parameters:
      listener2 - the listener with which to merge
    • isResponseReceived

      public boolean isResponseReceived()
      Reports true if a response has been received from the server.
      Returns:
      a flag indicating whether the response message queue is empty.
    • getMessageIDs

      public int[] getMessageIDs()
      Returns message IDs for all outstanding requests
      Returns:
      message ID array.
    • getMessageCount

      public int getMessageCount()
      Returns the count of queued messages
      Returns:
      message count.
    • getRequestCount

      public int getRequestCount()
      Returns the number of outstanding requests.
      Returns:
      outstanding request count.
    • toString

      public String toString()
      String representation of the object
      Overrides:
      toString in class Object