/**
* Get persistent value.
*
* @param uri Data URI
* @return Data String or null if not present
*/
public static String getValue(String uri) {
Logger logger = Core.getLogger();
javax.jnlp.PersistenceService ps = null;
String codebase = null;
try {
ps =
(javax.jnlp.PersistenceService)
javax.jnlp.ServiceManager.lookup("javax.jnlp.PersistenceService");
javax.jnlp.BasicService bs =
(javax.jnlp.BasicService) javax.jnlp.ServiceManager.lookup("javax.jnlp.BasicService");
codebase = bs.getCodeBase().toString();
} catch (Exception ex) {
logger.warning("Unable to look up PersistenceService: " + ex);
return null;
}
URL key = null;
javax.jnlp.FileContents fc = null;
try {
key = new URL(codebase + uri);
} catch (MalformedURLException ex) {
Core.getLogger().warning("Unable to build persistence service uri: " + ex);
return null;
}
try {
fc = ps.get(key);
byte[] b = new byte[(int) fc.getLength()];
fc.getInputStream().read(b);
return new String(b);
} catch (Exception ex) {
return null; // Failed to put something
}
}
/**
* Set persistent value.
*
* @param uri Data URI
* @param data Data String
* @return true on success, else false
*/
public static boolean setValue(String uri, String data) {
Logger logger = Core.getLogger();
javax.jnlp.PersistenceService ps = null;
String codebase = null;
try {
ps =
(javax.jnlp.PersistenceService)
javax.jnlp.ServiceManager.lookup("javax.jnlp.PersistenceService");
javax.jnlp.BasicService bs =
(javax.jnlp.BasicService) javax.jnlp.ServiceManager.lookup("javax.jnlp.BasicService");
codebase = bs.getCodeBase().toString();
} catch (Exception ex) {
logger.warning("Unable to look up PersistenceService: " + ex);
return false;
}
URL key = null;
javax.jnlp.FileContents fc = null;
try {
key = new URL(codebase + uri);
} catch (MalformedURLException ex) {
Core.getLogger().warning("Unable to build persistence service uri: " + ex);
return false;
}
try {
ps.create(key, data.getBytes().length);
fc = ps.get(key);
fc.getOutputStream(false).write(data.getBytes());
return true;
} catch (Exception ex) {
logger.warning("Unable to write to persistence service: " + ex);
}
return false;
}