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;
}
}
/**
* Extract a list of data variables (and their canonical names if possible) from the dataset.
*
* @param threddsDataset open this dataset
* @return ThreddsMetadata.Variables, or null if unable.
* @throws IOException on read error
*/
public static ThreddsMetadata.Variables extractVariables(InvDatasetImpl threddsDataset)
throws IOException {
ThreddsDataFactory.Result result = null;
try {
result = new ThreddsDataFactory().openFeatureDataset(threddsDataset, null);
if (result.fatalError) {
System.out.println(" openDatatype errs=" + result.errLog);
return null;
}
if (result.featureType == FeatureType.GRID) {
// System.out.println(" extractVariables GRID=" + result.location);
GridDataset gridDataset = (GridDataset) result.featureDataset;
return extractVariables(threddsDataset, gridDataset);
} else if ((result.featureType == FeatureType.STATION)
|| (result.featureType == FeatureType.POINT)) {
PointObsDataset pobsDataset = (PointObsDataset) result.featureDataset;
ThreddsMetadata.Variables vars = new ThreddsMetadata.Variables("CF-1.0");
for (VariableSimpleIF vs : pobsDataset.getDataVariables()) {
ThreddsMetadata.Variable v = new ThreddsMetadata.Variable();
vars.addVariable(v);
v.setName(vs.getName());
v.setDescription(vs.getDescription());
v.setUnits(vs.getUnitsString());
ucar.nc2.Attribute att = vs.findAttributeIgnoreCase("standard_name");
v.setVocabularyName((att != null) ? att.getStringValue() : "N/A");
}
vars.sort();
return vars;
}
} finally {
try {
if ((result != null) && (result.featureDataset != null)) result.featureDataset.close();
} catch (IOException ioe) {
logger.error("Closing dataset " + result.featureDataset, ioe);
}
}
return null;
}
public static ThreddsMetadata.Variables extractVariables(FeatureDatasetPoint fd) {
ThreddsMetadata.Variables vars = new ThreddsMetadata.Variables("CF-1.5");
List<VariableSimpleIF> dataVars = fd.getDataVariables();
if (dataVars == null) return vars;
for (VariableSimpleIF v : dataVars) {
ThreddsMetadata.Variable tv = new ThreddsMetadata.Variable();
vars.addVariable(tv);
tv.setName(v.getName());
tv.setDescription(v.getDescription());
tv.setUnits(v.getUnitsString());
ucar.nc2.Attribute att = v.findAttributeIgnoreCase("standard_name");
tv.setVocabularyName((att != null) ? att.getStringValue() : "N/A");
}
vars.sort();
return vars;
}
