public static ThreddsMetadata.Variables extractVariables(
InvDatasetImpl threddsDataset, GridDataset gridDataset) {
thredds.catalog.DataFormatType fileFormat = threddsDataset.getDataFormatType();
if ((fileFormat != null)
&& (fileFormat.equals(DataFormatType.GRIB1) || fileFormat.equals(DataFormatType.GRIB2))) {
boolean isGrib1 = fileFormat.equals(DataFormatType.GRIB1);
ThreddsMetadata.Variables vars = new ThreddsMetadata.Variables(fileFormat.toString());
for (GridDatatype grid : gridDataset.getGrids()) {
ThreddsMetadata.Variable v = new ThreddsMetadata.Variable();
v.setName(grid.getName());
v.setDescription(grid.getDescription());
v.setUnits(grid.getUnitsString());
// ucar.nc2.Attribute att = grid.findAttributeIgnoreCase("GRIB_param_number");
// String paramNumber = (att != null) ? att.getNumericValue().toString() : null;
if (isGrib1) {
v.setVocabularyName(grid.findAttValueIgnoreCase("GRIB_param_name", "ERROR"));
v.setVocabularyId(grid.findAttributeIgnoreCase("GRIB_param_id"));
} else {
String paramDisc = grid.findAttValueIgnoreCase("GRIB_param_discipline", "");
String paramCategory = grid.findAttValueIgnoreCase("GRIB_param_category", "");
String paramName = grid.findAttValueIgnoreCase("GRIB_param_name", "");
v.setVocabularyName(paramDisc + " / " + paramCategory + " / " + paramName);
v.setVocabularyId(grid.findAttributeIgnoreCase("GRIB_param_id"));
}
vars.addVariable(v);
}
vars.sort();
return vars;
} else { // GRID but not GRIB
ThreddsMetadata.Variables vars = new ThreddsMetadata.Variables("CF-1.0");
for (GridDatatype grid : gridDataset.getGrids()) {
ThreddsMetadata.Variable v = new ThreddsMetadata.Variable();
vars.addVariable(v);
v.setName(grid.getName());
v.setDescription(grid.getDescription());
v.setUnits(grid.getUnitsString());
ucar.nc2.Attribute att = grid.findAttributeIgnoreCase("standard_name");
v.setVocabularyName((att != null) ? att.getStringValue() : "N/A");
}
vars.sort();
return vars;
}
}
public void utestReadNcMLInputStream() throws Exception {
String ncmlLoc = "file:C:\\data\\work\\margolis\\test.ncml";
GridDataset fullDataset = GridDataset.open(ncmlLoc);
System.out.printf("full size= %d%n", fullDataset.getGrids().size());
// real ncml through a InputStream.
String ncml =
"<?xml version='1.0' encoding='UTF-8'?>\n"
+ "<netcdf xmlns='http://www.unidata.ucar.edu/namespaces/netcdf/ncml-2.2'>\n"
+ " <variable name='time'>\n"
+ " <attribute name='ncmlAdded' value='timeAtt'/>\n"
+ " </variable>\n"
+ " <aggregation dimName='time' type='joinExisting'>\n"
+ " <netcdf location='file:C:\\data\\work\\margolis\\f_0000000.nc'/>\n"
+ " <netcdf location='file:C:\\data\\work\\margolis\\f_0032400.nc'/>\n"
+ " </aggregation>\n"
+ "</netcdf>";
NetcdfDataset aggregatedDataset =
NcMLReader.readNcML(new ByteArrayInputStream(ncml.getBytes()), null);
GridDataset emptyDataset = new GridDataset(aggregatedDataset);
System.out.printf("empty= %s%n", emptyDataset.getGrids().size());
assert emptyDataset.getGrids().size() == fullDataset.getGrids().size();
}
