/** @author Attilio Mattiocco */
class GetStructureTask extends SwingWorker<Void, Void> {
private static Logger logger = Configuration.getSdmxLogger();
private ProgressViewer progress = null;
private Component parent = null;
public GetStructureTask(ProgressViewer progress, Component parent) {
super();
this.progress = progress;
this.parent = parent;
}
@Override
protected Void doInBackground() throws Exception {
try {
DefaultListModel dimListModel = new DefaultListModel();
List<Dimension> dims =
SdmxClientHandler.getDimensions(QueryPanel.selectedProvider, QueryPanel.selectedDataflow);
int i = 0;
for (Iterator<Dimension> iterator = dims.iterator(); iterator.hasNext(); ) {
Dimension dim = iterator.next();
dimListModel.add(i++, dim.getId());
}
JList dimList = new JList(dimListModel);
dimList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
dimList.addListSelectionListener(new DimensionSelectionListener(parent));
QueryPanel.dimensionsPane.getViewport().add(dimList);
String query = QueryPanel.getSDMXQuery();
QueryPanel.sdmxQuery.setText(query);
// initSelections(QueryPanel.selectedDataflow,dims);
} catch (Exception ex) {
logger.severe(
"Exception. Class: " + ex.getClass().getName() + " .Message: " + ex.getMessage());
logger.log(Level.FINER, "", ex);
} finally {
progress.setVisible(false);
}
return null;
}
// private void initSelections(String dataflow, List<Dimension> dims){
// QueryPanel.selectedDataflow = dataflow;
// QueryPanel.codeSelections = new LinkedHashMap<String, Object[]>();
// for (Iterator<Dimension> iterator = dims.iterator(); iterator.hasNext();) {
// Dimension d = (Dimension) iterator.next();
// QueryPanel.codeSelections.put(d.getId(), new Object[0]);
// }
// QueryPanel.sdmxQuery.setText(QueryPanel.getSDMXQuery());
// }
}
/** @author Attilio Mattiocco */
public class GenericDataParser {
protected static Logger logger = Configuration.getSdmxLogger();
private static final String SERIES = "Series";
private static final String SERIES_KEY = "SeriesKey";
private static final String VALUE = "value";
private static final String CONCEPT = "concept";
private static final String OBS = "Obs";
private static final String OBS_TIME = "Time";
private static final String OBS_VALUE = "ObsValue";
private static final String ATTRIBUTES = "Attributes";
private static final String ATTRIBUTEVALUE = "Value";
public static List<PortableTimeSeries> parse(
InputStreamReader xmlBuffer, DataFlowStructure dsd, String dataflow, boolean data)
throws XMLStreamException, UnsupportedEncodingException, SdmxException {
XMLInputFactory inputFactory = XMLInputFactory.newInstance();
BufferedReader br = skipBOM(xmlBuffer);
XMLEventReader eventReader = inputFactory.createXMLEventReader(br);
List<PortableTimeSeries> tsList = new ArrayList<PortableTimeSeries>();
PortableTimeSeries ts = null;
while (eventReader.hasNext()) {
XMLEvent event = eventReader.nextEvent();
logger.finest(event.toString());
if (event.isStartElement()) {
StartElement startElement = event.asStartElement();
if (startElement.getName().getLocalPart() == (SERIES)) {
ts = new PortableTimeSeries();
ts.setDataflow(dataflow);
}
if (startElement.getName().getLocalPart() == (SERIES_KEY)) {
setSeriesKey(ts, eventReader, dsd);
}
if (startElement.getName().getLocalPart() == (ATTRIBUTES)) {
setSeriesAttributes(ts, eventReader);
}
if (startElement.getName().getLocalPart() == (OBS) && data) {
setSeriesSingleObs(ts, eventReader);
}
}
if (event.isEndElement()) {
EndElement endElement = event.asEndElement();
if (endElement.getName().getLocalPart() == (SERIES)) {
tsList.add(ts);
}
}
}
return tsList;
}
private static void setSeriesKey(
PortableTimeSeries ts, XMLEventReader eventReader, DataFlowStructure dsd)
throws XMLStreamException {
String id = null;
String val = null;
String[] dimensions = new String[dsd.getDimensions().size()];
while (eventReader.hasNext()) {
XMLEvent event = eventReader.nextEvent();
logger.finest(event.toString());
if (event.isStartElement()) {
StartElement startElement = event.asStartElement();
if (startElement.getName().getLocalPart().equalsIgnoreCase(VALUE)) {
@SuppressWarnings("unchecked")
Iterator<Attribute> attributes = startElement.getAttributes();
while (attributes.hasNext()) {
Attribute attribute = attributes.next();
if (attribute.getName().toString().equalsIgnoreCase(CONCEPT)) {
id = attribute.getValue();
} else if (attribute.getName().toString().equalsIgnoreCase(VALUE)) {
val = attribute.getValue();
}
}
}
}
if (event.isEndElement()) {
EndElement endElement = event.asEndElement();
if (endElement.getName().getLocalPart().equalsIgnoreCase(VALUE)) {
if (dsd.isDimension(id)) {
dimensions[dsd.getDimensionPosition(id) - 1] = id + "=" + val;
}
if (id.equalsIgnoreCase("FREQ") || id.equalsIgnoreCase("FREQUENCY")) {
ts.setFrequency(val);
}
}
}
if (event.isEndElement()) {
EndElement endElement = event.asEndElement();
if (endElement.getName().getLocalPart() == (SERIES_KEY)) {
ts.setDimensions(Arrays.asList(dimensions));
break;
}
}
}
}
private static void setSeriesAttributes(PortableTimeSeries ts, XMLEventReader eventReader)
throws XMLStreamException {
String id = null;
String val = null;
while (eventReader.hasNext()) {
XMLEvent event = eventReader.nextEvent();
logger.finest(event.toString());
if (event.isStartElement()) {
StartElement startElement = event.asStartElement();
if (startElement.getName().getLocalPart().equalsIgnoreCase(VALUE)) {
@SuppressWarnings("unchecked")
Iterator<Attribute> attributes = startElement.getAttributes();
while (attributes.hasNext()) {
Attribute attribute = attributes.next();
if (attribute.getName().toString().equalsIgnoreCase(CONCEPT)) {
id = attribute.getValue();
} else if (attribute.getName().toString().equalsIgnoreCase(VALUE)) {
val = attribute.getValue();
}
}
}
}
if (event.isEndElement()) {
EndElement endElement = event.asEndElement();
if (endElement.getName().getLocalPart().equalsIgnoreCase(VALUE)) {
ts.addAttribute(id + '=' + val);
}
}
if (event.isEndElement()) {
EndElement endElement = event.asEndElement();
if (endElement.getName().getLocalPart() == (ATTRIBUTES)) {
break;
}
}
}
}
private static void setSeriesSingleObs(PortableTimeSeries ts, XMLEventReader eventReader)
throws XMLStreamException {
String time = null;
String val = null;
Hashtable<String, String> obs_attr = new Hashtable<String, String>();
while (eventReader.hasNext()) {
XMLEvent event = eventReader.nextEvent();
logger.finest(event.toString());
if (event.isStartElement()) {
StartElement startElement = event.asStartElement();
if (startElement.getName().getLocalPart() == (OBS_TIME)) {
time = eventReader.getElementText();
}
if (startElement.getName().getLocalPart() == (OBS_VALUE)) {
val = startElement.getAttributeByName(new QName(VALUE)).getValue();
}
if (startElement.getName().getLocalPart() == (ATTRIBUTEVALUE)) {
String name = startElement.getAttributeByName(new QName(CONCEPT)).getValue();
String value = startElement.getAttributeByName(new QName(VALUE)).getValue();
obs_attr.put(name, value);
}
}
if (event.isEndElement()) {
EndElement endElement = event.asEndElement();
if (endElement.getName().getLocalPart() == (OBS)) {
try {
ts.addObservation(new Double(val), time, obs_attr);
} catch (NumberFormatException e) {
logger.warning(
"Invalid observation: '" + val + "' for ts " + ts.getName() + ". Setting NaN.");
ts.addObservation(new Double("NaN"), time, obs_attr);
}
break;
}
}
}
}
// some 2.0 providers are apparently adding a BOM
private static BufferedReader skipBOM(InputStreamReader xmlBuffer) throws SdmxException {
BufferedReader br = new BufferedReader(xmlBuffer);
logger.fine(xmlBuffer.getEncoding());
try {
// java uses Unicode big endian
char[] cbuf = new char[1];
br.mark(1);
br.read(cbuf, 0, 1);
logger.fine(String.format("0x%2s", Integer.toHexString(cbuf[0])));
if ((byte) cbuf[0] == (byte) 0xfeff) {
logger.fine("BOM found and skipped");
} else {
br.reset();
}
} catch (IOException e) {
throw new SdmxException("Error handling BOM for UTF8 response stream.");
}
return br;
}
}
