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public interface LogReaderService
Provides methods to retrieve LogEntry objects from the log.
There are two ways to retrieve LogEntry objects:
LogEntry
,
LogListener
,
LogListener.logged(LogEntry)
Method Summary | |
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void |
addLogListener(LogListener listener)
Subscribes to LogEntry objects. |
java.util.Enumeration |
getLog()
Returns an Enumeration of all LogEntry objects in the log. |
void |
removeLogListener(LogListener listener)
Unsubscribes to LogEntry objects. |
Method Detail |
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void addLogListener(LogListener listener)
This method registers a LogListener object with the Log Reader Service. The LogListener.logged(LogEntry) method will be called for each LogEntry object placed into the log.
When a bundle which registers a LogListener object is stopped or otherwise releases the Log Reader Service, the Log Reader Service must remove all of the bundle's listeners.
If this Log Reader Service's list of listeners already contains a listener l such that (l==listener), this method does nothing.
listener
- A LogListener object to register; the
LogListener object is used to receive LogEntry objects.LogListener
,
LogEntry
,
LogListener.logged(LogEntry)
void removeLogListener(LogListener listener)
This method unregisters a LogListener object from the Log Reader Service.
If listener is not contained in this Log Reader Service's list of listeners, this method does nothing.
listener
- A LogListener object to unregister.LogListener
java.util.Enumeration getLog()
Each element of the enumeration is a LogEntry object, ordered with the most recent entry first. Whether the enumeration is of all LogEntry objects since the Log Service was started or some recent past is implementation-specific. Also implementation-specific is whether informational and debug LogEntry objects are included in the enumeration.
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