/**
* Sync the file
*
* @return true if needed to sync
* @throws IOException problem synching the file
*/
public boolean sync() throws IOException {
// printStack("***************************** sync ************************", 100);
// System.out.printf("check sync on %s (%s) %n", raf.getLocation(),
// Calendar.getInstance().getTime());
if (gemreader.getInitFileSize() < raf.length()) {
long start = System.currentTimeMillis();
Trace.msg(
"GEMPAKStationIOSP.sync: file "
+ raf.getLocation()
+ " is bigger: "
+ raf.length()
+ " > "
+ gemreader.getInitFileSize());
Trace.call1("GEMPAKStationIOSP.sync: reader.init");
gemreader.init(raf, true);
Trace.call2("GEMPAKStationIOSP.sync: reader.init");
Trace.call1("GEMPAKStationIOSP.sync: buildNCFile");
// reconstruct the ncfile objects
buildNCFile();
Trace.call2("GEMPAKSIOSP.sync: buildNCFile");
// System.out.printf("sync on %s took %d msecs%n", raf.getLocation(),
// (System.currentTimeMillis()-start));
return true;
}
return false;
}
/**
* Build the netCDF file
*
* @throws IOException problem reading the file
*/
protected void buildNCFile() throws IOException {
Trace.call1("GEMPAKSIOSP: buildNCFile");
ncfile.empty();
fillNCFile();
addGlobalAttributes();
ncfile.finish();
Trace.call2("GEMPAKSIOSP: buildNCFile");
// System.out.println(ncfile);
}
/**
* Open the service provider for reading.
*
* @param raf file to read from
* @param ncfile netCDF file we are writing to (memory)
* @param cancelTask task for cancelling
* @throws IOException problem reading file
*/
public void open(RandomAccessFile raf, NetcdfFile ncfile, CancelTask cancelTask)
throws IOException {
// System.out.printf("GempakSurfaceIOSP open %s (%s) %n", raf.getLocation(),
// Calendar.getInstance().getTime());
this.raf = raf;
this.ncfile = ncfile;
long start = System.currentTimeMillis();
if (gemreader == null) {
gemreader = makeStationReader();
}
Trace.call1("GEMPAKStationIOSP.open: initTables");
initTables();
Trace.call2("GEMPAKStationIOSP.open: initTables");
Trace.call1("GEMPAKStationIOSP.open: reader.init");
gemreader.init(raf, true);
Trace.call2("GEMPAKStationIOSP.open: reader.init");
buildNCFile();
}
/**
* Is this a valid file?
*
* @param raf RandomAccessFile to check
* @return true if a valid Gempak grid file
* @throws IOException problem reading file
*/
public boolean isValidFile(RandomAccessFile raf) throws IOException {
try {
gemreader = makeStationReader();
Trace.call1("GEMPAKSIOSP.isValidFile: reader.init");
gemreader.init(raf, false);
Trace.call2("GEMPAKSIOSP.isValidFile: reader.init");
} catch (Exception ioe) {
return false;
}
return true;
}