@RequestMapping(method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
public void exportData(HttpServletResponse resp, Principal prin) throws IOException {
resp.setContentType(MediaType.APPLICATION_JSON_VALUE);
// this writer puts things out onto the wire
JsonWriter writer = new JsonWriter(resp.getWriter());
writer.setIndent(" ");
try {
writer.beginObject();
writer.name("exported-at");
writer.value(dateFormat.format(new Date()));
writer.name("exported-from");
writer.value(config.getIssuer());
writer.name("exported-by");
writer.value(prin.getName());
// delegate to the service to do the actual export
dataService_1_3.exportData(writer);
writer.endObject(); // end root
writer.close();
} catch (IOException e) {
logger.error("Unable to export data", e);
}
}
@Nullable
public static String newDocumentText(@NotNull final IpnbFilePanel ipnbPanel) {
final IpnbFile ipnbFile = ipnbPanel.getIpnbFile();
if (ipnbFile == null) return null;
for (IpnbEditablePanel panel : ipnbPanel.getIpnbPanels()) {
if (panel.isModified()) {
panel.updateCellSource();
}
}
final IpnbFileRaw fileRaw = new IpnbFileRaw();
fileRaw.metadata = ipnbFile.getMetadata();
if (ipnbFile.getNbformat() == 4) {
for (IpnbCell cell : ipnbFile.getCells()) {
fileRaw.cells.add(IpnbCellRaw.fromCell(cell, ipnbFile.getNbformat()));
}
} else {
final IpnbWorksheet worksheet = new IpnbWorksheet();
worksheet.cells.clear();
for (IpnbCell cell : ipnbFile.getCells()) {
worksheet.cells.add(IpnbCellRaw.fromCell(cell, ipnbFile.getNbformat()));
}
fileRaw.worksheets = new IpnbWorksheet[] {worksheet};
}
final StringWriter stringWriter = new StringWriter();
final JsonWriter writer = new JsonWriter(stringWriter);
writer.setIndent(" ");
gson.toJson(fileRaw, fileRaw.getClass(), writer);
return stringWriter.toString();
}
private void pushWriter(ByteArrayOutputStream baos) {
OutputStreamWriter osw = new OutputStreamWriter(baos, Charsets.UTF_8);
JsonWriter writer = new JsonWriter(osw);
writer.setIndent(" "); // two spaces
WriterByteArrayOutputStream wbaos = new WriterByteArrayOutputStream(writer, baos);
writers.push(wbaos);
}
private JsonWriter newJsonWriter(Writer writer) throws IOException {
if (this.generateNonExecutableJson) {
writer.write(JSON_NON_EXECUTABLE_PREFIX);
}
JsonWriter jsonWriter = new JsonWriter(writer);
if (this.prettyPrinting) {
jsonWriter.setIndent(" ");
}
jsonWriter.setSerializeNulls(this.serializeNulls);
return jsonWriter;
}
@Override
@Transactional
public void exportEntities(ImportExportBlueprint blueprint, Writer writer) {
try (JsonWriter jsonWriter = new JsonWriter(writer)) {
jsonWriter.setIndent(" ");
ExportContext exportContext =
new ExportContext(sortBlueprintRecords(blueprint), bundleContext, allEntities);
ExportWriter exportWriter = new ExportWriter(jsonWriter, exportContext);
exportWriter.export();
} catch (IOException e) {
throw new ImportExportException("An IO error occurred during export.", e);
}
}
private static void write(File file, JsonElement element) {
try {
Closer closer = Closer.create();
try {
FileOutputStream stream = closer.register(new FileOutputStream(file));
Writer fileWriter = closer.register(new OutputStreamWriter(stream, StandardCharsets.UTF_8));
JsonWriter jsonWriter = closer.register(new JsonWriter(fileWriter));
jsonWriter.setIndent(" ");
Streams.write(element, jsonWriter);
} finally {
closer.close();
}
} catch (IOException e) {
throw Throwables.propagate(e);
}
}
public void write(Writer writer, boolean pretty) throws IOException {
JsonWriter w = new JsonWriter(writer);
w.setIndent(pretty ? " " : "");
write(w);
}
