// read in the index, create if it doesnt exist or is out of date
public static Grib1TimePartition factory(
TimePartitionCollection tpc, CollectionManager.Force force, Formatter f) throws IOException {
Grib1TimePartitionBuilder builder =
new Grib1TimePartitionBuilder(tpc.getCollectionName(), new File(tpc.getRoot()), tpc);
builder.readOrCreateIndex(force, f);
return builder.tp;
}
// read in the index, index raf already open
public static Grib1TimePartition createFromIndex(
String name, File directory, RandomAccessFile raf) throws IOException {
Grib1TimePartitionBuilder builder = new Grib1TimePartitionBuilder(name, directory, null);
if (builder.readIndex(raf)) {
return builder.tp;
}
throw new IOException("Reading index failed");
}
// called by tdm
public static boolean update(TimePartitionCollection tpc, Formatter f) throws IOException {
Grib1TimePartitionBuilder builder =
new Grib1TimePartitionBuilder(tpc.getCollectionName(), new File(tpc.getRoot()), tpc);
if (!builder.needsUpdate()) return false;
builder.readOrCreateIndex(CollectionManager.Force.always, f);
builder.gc.close();
return true;
}
/**
* write new index if needed
*
* @param tpc use this collection
* @param force force index
* @param f put status messagess here
* @return true if index was written
* @throws IOException on error
*/
public static boolean writeIndexFile(
TimePartitionCollection tpc, CollectionManager.Force force, Formatter f) throws IOException {
Grib1TimePartitionBuilder builder = null;
try {
builder =
new Grib1TimePartitionBuilder(tpc.getCollectionName(), new File(tpc.getRoot()), tpc);
return builder.readOrCreateIndex(force, f);
} finally {
if ((builder != null) && (builder.tp != null)) builder.tp.close();
}
}
public static void main(String[] args) throws IOException {
Formatter f = new Formatter();
String indexName = (args.length > 0) ? args[0] : "F:/nomads/NOMADS-cfsrr-timeseries.ncx";
RandomAccessFile raf = new RandomAccessFile(indexName, "r");
Grib1TimePartition gtc = Grib1TimePartitionBuilder.createFromIndex("test", null, raf);
gtc.showIndex(f);
System.out.printf("%s%n", f);
}
