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java.lang.Objectjava.lang.Thread
uk.org.iscream.cms.server.componentmanager.ConfigurationProxy
A Configuration Proxy hold configurations caches and maintains configurations obtained from the Configuration Manager. It also has support for checking for updates in configurations, if a change is detected, it reloads all the changed configurations. This is done by a thread which runs every ConfigurationProxy.updateTime seconds. This is a singleton class, and should be used by all classes that wish to gain a configuration from the server, as it then allows them to be dynamically reconfigured.
Field Summary | |
private HashMap |
_configCache
Holds a list of configuration cache's for every configuration that has been requested of this proxy. |
private ConfigurationManager |
_confman
This holds a reference to the configuration manager |
private static ConfigurationProxy |
_instance
A reference to the single instance of this class |
private Logger |
_logger
This holds a reference to the system logger that is being used. |
private String |
_name
This is the friendly identifier of the component this class is running in. |
private ReferenceManager |
_refman
A reference to the reference manager in use |
private boolean |
_running
Holds the current state of the configuration proxy's thread |
int |
DEFAULT_REFRESH_TIME
The default time to refresh the configurations - 60 seconds. |
static String |
REVISION
The current CVS revision of this class |
Fields inherited from class java.lang.Thread |
MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY |
Constructor Summary | |
private |
ConfigurationProxy()
Construct a ConfigurationProxy Then starts the auto-updating part (the thread) running. |
Method Summary | |
String |
getFileList(String configName)
This method obtains the configuration from the configuration cache, if the configuration isn't in the cache, it adds it. |
static ConfigurationProxy |
getInstance()
Return a reference to the single class. |
long |
getLastModified(String configName)
This method obtains the configuration from the configuration cache, if the configuration isn't in the cache, it adds it. |
String |
getProperty(String configName,
String propertyName)
This method obtains the configuration from the configuration cache, if the configuration isn't in the cache, it adds it. |
void |
run()
This method runs and waits for a period defined by ConfigurationProxy.updateTime. |
String |
toString()
Overrides the Object.toString()
method to provide clean logging (every class should have this). |
Methods inherited from class java.lang.Thread |
activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, yield |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
public static final String REVISION
public final int DEFAULT_REFRESH_TIME
private String _name
private Logger _logger
private ReferenceManager _refman
private ConfigurationManager _confman
private HashMap _configCache
private boolean _running
private static ConfigurationProxy _instance
Constructor Detail |
private ConfigurationProxy()
Method Detail |
public static ConfigurationProxy getInstance()
public void run()
public String getProperty(String configName, String propertyName) throws PropertyNotFoundException
configName
- the name of the configurationpropertyName
- the name of the property to obtain
PropertyNotFoundException
public String getFileList(String configName)
configName
- the name of the configuration
public long getLastModified(String configName)
configName
- the name of the configuration
public String toString()
Object.toString()
method to provide clean logging (every class should have this).
This uses the uk.org.iscream.cms.util.FormatName class
to format the toString()
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