// -----------------------------------------------------------
// for "SrvRqst"
// find the matched URLs with (type, scope, predicate, ltag)
// return: error code (short)
// number of matched URLs (short)
// URL blocks (decided bt previous #URL)
// -----------------------------------------------------------
public synchronized byte[] getMatchedURL(String type, String scope, String pred, String ltag) {
byte[] buf = null;
int ecode = Const.OK;
if (!Util.shareString(daf.getScope(), scope, ",")) {
ecode = Const.SCOPE_NOT_SUPPORTED;
}
b.reset();
try {
int count = 0;
d.writeShort(ecode); // error code
d.writeShort(count); // URL count, place holder
if (ecode == Const.OK) { // no error, find matched URLs
Iterator values = table.values().iterator();
while (values.hasNext()) {
Entry e = (Entry) values.next();
if (e.match(type, scope, pred, ltag)) {
count++;
d.writeByte(0);
d.writeShort(e.getLifetime());
d.writeShort(e.getURL().length());
d.writeBytes(e.getURL());
d.writeByte(0);
}
}
}
buf = b.toByteArray();
if (count > 0) Util.writeInt(buf, 2, count, 2); // update count
} catch (Exception e) {
if (ServiceLocationManager.displayMSLPTrace) e.printStackTrace();
}
return buf;
}