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Class NotificationResult

All Implemented Interfaces:
Serializable
public class NotificationResult
extends Object
implements Serializable

Result of a query for buffered notifications. Notifications in a notification buffer have positive, monotonically increasing sequence numbers. The result of a notification query contains the following elements:

  • The sequence number of the earliest notification still in the buffer.
  • The sequence number of the next notification available for querying. This will be the starting sequence number for the next notification query.
  • An array of (Notification,listenerID) pairs corresponding to the returned notifications and the listeners they correspond to.

It is possible for the nextSequenceNumber to be less than the earliestSequenceNumber. This signifies that notifications between the two might have been lost.

Since:
1.5

Constructors

NotificationResult

public NotificationResult(long earliestSequenceNumber,
                          long nextSequenceNumber,
                          TargetedNotification[] targetedNotifications)

Constructs a notification query result.

Parameters:
earliestSequenceNumber - the sequence number of the earliest notification still in the buffer.
nextSequenceNumber - the sequence number of the next notification available for querying.
targetedNotifications - the notifications resulting from the query, and the listeners they correspond to. This array can be empty.
Throws:
IllegalArgumentException - if targetedNotifications is null or if earliestSequenceNumber or nextSequenceNumber is negative.

Methods

getEarliestSequenceNumber

public long getEarliestSequenceNumber()

Returns the sequence number of the earliest notification still in the buffer.

Returns:
the sequence number of the earliest notification still in the buffer.

getNextSequenceNumber

public long getNextSequenceNumber()

Returns the sequence number of the next notification available for querying.

Returns:
the sequence number of the next notification available for querying.

getTargetedNotifications

public TargetedNotification[] getTargetedNotifications()

Returns the notifications resulting from the query, and the listeners they correspond to.

Returns:
the notifications resulting from the query, and the listeners they correspond to. This array can be empty.

toString

public String toString()

Returns a string representation of the object. The result should be a concise but informative representation that is easy for a person to read.

Overrides:
toString in class Object
Returns:
a string representation of the object.

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Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
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