/**
* Determines whether a BitSet contains the same information as a RowSubset.
*
* @param mask bit set
* @param rset row subset
* @param nrow number of rows over which they are required to match
* @return true iff they represent the same data
*/
private static boolean matches(BitSet mask, RowSubset rset, int nrow) {
for (int i = 0; i < nrow; i++) {
if (mask.get(i) != rset.isIncluded((long) i)) {
return false;
}
}
return true;
}
/**
* 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));
}
}
}
}
