/**
* Attempts to locate a table by its ID. This is currently a URL string; either one got from a
* previous VOT_LOADURL message or one inherent in the table.
*
* @param tableId table identifier URL string
* @return tableWithRows object corresponding to tableId, or null
*/
private TableWithRows lookupTable(String tableId) {
TableWithRows tr = (TableWithRows) idMap_.get(tableId);
if (tr != null) {
return tr;
} else {
ListModel tablesList = ControlWindow.getInstance().getTablesListModel();
for (int i = 0; i < tablesList.getSize(); i++) {
TopcatModel tcModel = (TopcatModel) tablesList.getElementAt(i);
URL url = tcModel.getDataModel().getBaseTable().getURL();
if (URLUtils.sameResource(url, URLUtils.makeURL(tableId))) {
return new TableWithRows(tcModel, null);
}
}
}
return null;
}
/**
* Sends a table to a specific list of PLASTIC listeners.
*
* @param tcModel the table model to broadcast
* @param hub hub object
* @param plasticId registration ID for this application
* @param recipients listeners to receive it; null means do a broadcast
*/
private void transmitTable(
TopcatModel tcModel,
final PlasticHubListener hub,
final URI plasticId,
final URI[] recipients)
throws IOException {
/* Write the data as a VOTable to a temporary file preparatory to
* broadcast. */
final File tmpfile = File.createTempFile("plastic", ".vot");
final String tmpUrl = URLUtils.makeFileURL(tmpfile).toString();
tmpfile.deleteOnExit();
OutputStream ostrm = new BufferedOutputStream(new FileOutputStream(tmpfile));
try {
new VOTableWriter(DataFormat.TABLEDATA, true)
.writeStarTable(tcModel.getApparentStarTable(), ostrm);
} catch (IOException e) {
tmpfile.delete();
throw e;
} finally {
ostrm.close();
}
/* Store a record of the table that was broadcast with its
* state. */
int[] rowMap = tcModel.getViewModel().getRowMap();
idMap_.put(tmpUrl, new TableWithRows(tcModel, rowMap));
/* Do the broadcast, synchronously so that we don't delete the
* temporary file too early, but in another thread so that we
* don't block the GUI. */
new Thread("PLASTIC table broadcast") {
public void run() {
List argList = Arrays.asList(new Object[] {tmpUrl, tmpUrl});
Map responses =
recipients == null
? hub.request(plasticId, MessageId.VOT_LOADURL, argList)
: hub.requestToSubset(
plasticId, MessageId.VOT_LOADURL, argList, Arrays.asList(recipients));
/* Delete the temp file. */
tmpfile.delete();
}
}.start();
}
/**
* Transmits a request for listening applications to highlight a given table row.
*
* @param tcModel topcat model of table to broadcast
* @param lrow row index within tcModel
* @param recipients array of plastic IDs for target applications; if null, broadcast will be to
* all
* @return true iff message was broadcast successfully
*/
public boolean highlightRow(TopcatModel tcModel, long lrow, URI[] recipients) throws IOException {
/* Get the hub and ID. */
register();
PlasticHubListener hub = getHub();
URI plasticId = getRegisteredId();
int irow = Tables.checkedLongToInt(lrow);
/* See if the table we're broadcasting the row for is any of the
* tables we've previously broadcast. If so, send the row using the
* same ID. */
boolean done = false;
int sendRow = -1;
String tableId = null;
for (Iterator it = idMap_.entrySet().iterator(); !done && it.hasNext(); ) {
Map.Entry entry = (Map.Entry) it.next();
TableWithRows tr = (TableWithRows) entry.getValue();
TopcatModel tcm = (TopcatModel) tr.tcModelRef_.get();
if (tcm != null && tcm == tcModel) {
int[] rowMap = tr.rowMap_;
if (rowMap == null) {
sendRow = irow;
} else {
for (int j = 0; j < rowMap.length; j++) {
if (irow == rowMap[j]) {
sendRow = j;
break;
}
}
}
tableId = entry.getKey().toString();
done = true;
}
}
/* If that didn't result in any sends, try using the basic URL of
* the table. */
if (!done) {
URL url = URLUtils.fixURL(tcModel.getDataModel().getBaseTable().getURL());
if (url != null) {
sendRow = irow;
tableId = url.toString();
done = true;
}
}
/* Send the message if we've got the arguments. */
if (done && sendRow >= 0) {
List args =
Arrays.asList(
new Object[] {
tableId, new Integer(sendRow),
});
if (recipients == null) {
hub.requestAsynch(plasticId, MessageId.VOT_HIGHLIGHTOBJECT, args);
} else {
hub.requestToSubsetAsynch(
plasticId, MessageId.VOT_HIGHLIGHTOBJECT, args, Arrays.asList(recipients));
}
return true;
}
/* Otherwise return failure status. */
else {
return false;
}
}
/**
* Sends a row subset to a specific list of PLASTIC listeners. It uses the <code>
* ivo://votech.org/votable/showObjects</code> message.
*
* @param tcModel topcat model
* @param rset row subset within tcModel
* @param hub hub object
* @param plasticId registration ID for this application
* @param recipients listeners to receive it; null means do a broadcast
*/
private void transmitSubset(
TopcatModel tcModel,
RowSubset rset,
PlasticHubListener hub,
URI plasticId,
final URI[] recipients)
throws IOException {
/* See if the table we're broadcasting the set for is any of the
* tables we've previously broadcast. If so, send the rows using
* the same ID. */
boolean done = false;
for (Iterator it = idMap_.entrySet().iterator(); it.hasNext(); ) {
Map.Entry entry = (Map.Entry) it.next();
String tableId = entry.getKey().toString();
TableWithRows tr = (TableWithRows) entry.getValue();
TopcatModel tcm = (TopcatModel) tr.tcModelRef_.get();
if (tcm != null && tcm == tcModel) {
List rowList = new ArrayList();
/* Assemble a list of rows, possibly modulated by the
* row order when the table was sent originally. */
int[] rowMap = tr.rowMap_;
if (rowMap == null) {
int nrow = (int) Math.min((long) Integer.MAX_VALUE, tcModel.getDataModel().getRowCount());
for (int i = 0; i < nrow; i++) {
if (rset.isIncluded(i)) {
rowList.add(new Integer(i));
}
}
} else {
int nrow = rowMap.length;
for (int i = 0; i < nrow; i++) {
if (rset.isIncluded(rowMap[i])) {
rowList.add(new Integer(i));
}
}
}
/* Send the request. */
List argList = Arrays.asList(new Object[] {tableId, rowList});
if (recipients == null) {
hub.requestAsynch(plasticId, MessageId.VOT_SHOWOBJECTS, argList);
} else {
hub.requestToSubsetAsynch(
plasticId, MessageId.VOT_SHOWOBJECTS, argList, Arrays.asList(recipients));
}
done = true;
}
}
/* If that didn't result in any sends, try using the basic URL of
* the table. */
if (!done) {
URL url = URLUtils.fixURL(tcModel.getDataModel().getBaseTable().getURL());
if (url != null) {
List rowList = new ArrayList();
int nrow = (int) Math.min((long) Integer.MAX_VALUE, tcModel.getDataModel().getRowCount());
for (int i = 0; i < nrow; i++) {
if (rset.isIncluded(i)) {
rowList.add(new Integer(i));
}
}
List argList = Arrays.asList(new Object[] {url.toString(), rowList});
if (recipients == null) {
hub.requestAsynch(plasticId, MessageId.VOT_SHOWOBJECTS, argList);
} else {
hub.requestToSubsetAsynch(
plasticId, MessageId.VOT_SHOWOBJECTS, argList, Arrays.asList(recipients));
}
}
}
}