/**
* Constructs and returns a worker thread which can perform a match as specified by the current
* state of this component.
*
* @return new worker thread
* @throws RuntimeException if the current state does not fully specify a multi query job; such
* exceptions will have comprehensible messages
*/
private MatchWorker createMatchWorker() {
/* Acquire state from this panel's GUI components. */
String sUrl = urlField_.getText();
if (sUrl == null || sUrl.trim().length() == 0) {
throw new IllegalArgumentException("No " + service_.getName() + " URL given");
}
URL serviceUrl;
try {
serviceUrl = new URL(sUrl);
} catch (MalformedURLException e) {
throw (IllegalArgumentException)
new IllegalArgumentException("Bad " + service_.getName() + " URL syntax: " + sUrl)
.initCause(e);
}
ConeErrorPolicy erract = (ConeErrorPolicy) erractSelector_.getSelectedItem();
TopcatModel tcModel = tcModel_;
if (tcModel == null) {
throw new NullPointerException("No table selected");
}
final StarTable inTable = tcModel.getApparentStarTable();
int[] rowMap = tcModel.getViewModel().getRowMap();
ColumnData raData = raSelector_.getColumnData();
ColumnData decData = decSelector_.getColumnData();
ColumnData srData = srSelector_.getColumnData();
if (raData == null) {
throw new NullPointerException("No RA column given");
}
if (decData == null) {
throw new NullPointerException("No Dec column given");
}
Number parNum = parallelModel_.getNumber();
int parallelism = parNum == null ? 1 : parNum.intValue();
MulticoneMode mcMode = (MulticoneMode) modeSelector_.getSelectedItem();
StarTableFactory tfact = ControlWindow.getInstance().getTableFactory();
/* Assemble objects based on this information. */
ConeSearcher searcher = service_.createSearcher(serviceUrl, tfact);
Coverage coverage = coverageModel_.isSelected() ? service_.getCoverage(serviceUrl) : null;
DatasQuerySequenceFactory qsf = new DatasQuerySequenceFactory(raData, decData, srData, rowMap);
ConeMatcher matcher =
mcMode.createConeMatcher(searcher, erract, inTable, qsf, coverage, parallelism);
ResultHandler resultHandler =
mcMode.createResultHandler(this, tfact.getStoragePolicy(), tcModel, inTable);
/* Create MatchWorker encapsulating all of this. */
MatchWorker worker = new MatchWorker(matcher, resultHandler, tcModel, inTable);
/* Perform post-construction configuration of constituent objects
* as required. */
qsf.setMatchWorker(worker);
resultHandler.setMatchWorker(worker);
/* Return worker thread. */
return worker;
}
/** Update the service coverage component if the currently selected service URL has changed. */
private void updateServiceCoverage() {
if (hasCoverage_) {
if (coverageModel_.isSelected()) {
URL url = toUrl(urlField_.getText());
if ((url == null && lastCoverageUrl_ != null)
|| (url != null && !url.equals(lastCoverageUrl_))) {
Coverage cov = url == null ? null : service_.getCoverage(url);
serviceCoverageView_.setCoverage(cov);
lastCoverageUrl_ = url;
updateOverlapCoverage();
}
} else {
serviceCoverageView_.setCoverage(null);
lastCoverageUrl_ = null;
}
}
}