/**
* Gets the value of the parameter indicated by the urn.
*
* <p>The parameter is to be found in one of the registered parameterizable. Otherwise, a
* ParameterizationException will be thrown.
*
* @see eu.artemis.demanes.parameterization.Parameterizable#setParameter(eu.artemis
* .demanes.datatypes.ANES_URN, java.lang.Object)
*/
@Override
public Object getParameter(ANES_URN urn) throws ParameterizationException {
UUID uid = UUID.randomUUID();
logger.trace(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_TRACE,
"Param",
"Getting Parameter " + urn + " from broker (" + uid + ")"));
Parameterizable parameterizable = findURNOwner(urn);
if (parameterizable != null) {
Object response = parameterizable.getParameter(urn);
logger.trace(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_TRACE,
"Param",
"Parameter " + urn + " obtained (" + uid + ")"));
return response;
} else {
logger.error(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_ERROR,
"Param",
"Unable to find parameter " + urn));
throw new ParameterizationURNException();
}
}
/**
* Sets the parameter indicated by the urn, with the given value.
*
* <p>The parameter is to be found in one of the registered parameterizable. Otherwise, a
* ParameterizationException will be thrown.
*
* @see eu.artemis.demanes.parameterization.Parameterizable#setParameter(eu.artemis
* .demanes.datatypes.ANES_URN, java.lang.Object)
*/
@Override
public void setParameter(ANES_URN urn, Object value) throws ParameterizationException {
UUID uid = UUID.randomUUID();
logger.trace(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_TRACE,
"Param",
"Setting parameter " + urn + " from broker (" + uid + ")"));
Parameterizable parameterizable = findURNOwner(urn);
if (parameterizable != null) {
parameterizable.setParameter(urn, value);
} else {
logger.error(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_ERROR,
"Param",
"Setting unknown parameter " + urn));
throw new ParameterizationURNException();
}
logger.trace(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_TRACE,
"Param",
"Parameter set (" + uid + ")"));
}
/**
* Lists all urns accessible through this broker.
*
* @return an array with all the urns accessible through this parameterizable.
* @see eu.artemis.demanes.parameterization.Parameterizable#setParameter(eu.artemis
* .demanes.datatypes.ANES_URN, java.lang.Object)
*/
@Override
public Set<ANES_URN> listParameters() {
UUID uid = UUID.randomUUID();
logger.trace(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_TRACE,
"Param",
"Listing parameters (" + uid + ")"));
final Set<ANES_URN> urnList = new HashSet<ANES_URN>();
for (Parameterizable it : this.parSet)
try {
urnList.addAll(it.listParameters());
} catch (ParameterizationException e) {
logger.error(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_ERROR,
"Param",
"Error Listing parameters",
e));
// Do nothing
}
logger.trace(
new LogEntry(
this.getClass().getName(),
LogConstants.LOG_LEVEL_TRACE,
"Param",
"Finished listing (" + uid + ")"));
return urnList;
}
/**
* Finds a parameterizable that owns a parameter with the indicated URN.
*
* @return the parameterizable or null if no owner is found.
*/
private Parameterizable findURNOwner(ANES_URN urn) {
for (Parameterizable parameterizable : parSet)
try {
if (parameterizable.listParameters().contains(urn)) return parameterizable;
} catch (ParameterizationException e) {
// Do nothing, search next one
}
return null;
}