public <T extends AbstractDbEntity> String buildJsonStringByTypeAndId(long Id, Class<T> type) {
String result = "";
T DBobject = objectsController.select(type, Id);
if (DBobject == null) {
return result;
}
// may return null
JsonObjectBuilder transJOB;
try {
transJOB = JsonObjectFiller.getJsonObjectBuilderFromClassInstance(DBobject);
} catch (IllegalArgumentException | IllegalAccessException e) {
return result;
}
JsonObject JObject = transJOB.build();
Map<String, Boolean> config = new HashMap<>();
config.put(JsonGenerator.PRETTY_PRINTING, true);
JsonWriterFactory factory = Json.createWriterFactory(config);
// http://blog.eisele.net/2013/02/test-driving-java-api-for-processing.html
StringWriter sw = new StringWriter();
try (JsonWriter jw = factory.createWriter(sw)) {
jw.writeObject(JObject);
}
result = sw.toString();
return result;
}
public static void main(String[] args) {
StringWriter s = new StringWriter();
JsonWriter writer = Json.createWriter(s);
writer.writeObject(buildJSon());
System.out.println(s);
}
public String toJSON() {
JsonArrayBuilder nodearray = Json.createArrayBuilder();
if (nodeTemplatelist == null) logger.error("nodeTemplatelist is empty");
for (NodeTemplateCount process : nodeTemplatelist) {
nodearray.add(process.getCount());
}
JsonObject model =
Json.createObjectBuilder()
.add("name", this.name)
.add("plugin_name", this.pluginName)
.add("hadoop_version", this.hadoopVersion)
.add("node_processes", nodearray)
.build();
StringWriter stWriter = new StringWriter();
try (JsonWriter jsonWriter = Json.createWriter(stWriter)) {
jsonWriter.writeObject(model);
}
String jsonData = stWriter.toString();
System.out.println(jsonData);
return jsonData;
}
/**
* Creates a JSON string with key as 'message' and value as 'username: message'
*
* @param username the user who sent message
* @param msg the message sent by user
* @return String JSON representation of a single message
*/
private String buildJsonData(String username, String msg) {
JsonObject jsonObject =
Json.createObjectBuilder().add("message", username + ": " + msg).build();
StringWriter sw = new StringWriter();
try (JsonWriter jw = Json.createWriter(sw)) {
jw.write(jsonObject);
}
return sw.toString();
}
/**
* Print JSON.
*
* @param src Source
* @return JSON
* @throws IOException If fails
*/
private static byte[] print(final RsJSON.Source src) throws IOException {
final ByteArrayOutputStream baos = new ByteArrayOutputStream();
final JsonWriter writer = Json.createWriter(baos);
try {
writer.write(src.toJSON());
} finally {
writer.close();
}
return baos.toByteArray();
}
@Override
public void execute() throws BuildException {
if (index == null) {
throw new BuildException("Required attributes: file");
}
try {
JsonObjectBuilder jsonRoot = Json.createObjectBuilder();
JsonArrayBuilder jsonKeyrings = Json.createArrayBuilder();
getKeyRings().forEach(jsonKeyrings::add);
jsonRoot.add("keyrings", jsonKeyrings);
JsonArrayBuilder jsonPackages = Json.createArrayBuilder();
getPackages()
.forEach(
(p) -> {
JsonObjectBuilder jsonPackage = Json.createObjectBuilder();
p.forEach(
(k, v) -> {
if (v instanceof Boolean) {
jsonPackage.add(k, (Boolean) v); // Boolean
} else if (v instanceof Number) {
jsonPackage.add(k, ((Number) v).longValue()); // Integer
} else if (v instanceof String[]) {
JsonArrayBuilder array = Json.createArrayBuilder(); // String Array
for (String s : (String[]) v) {
array.add(s);
}
jsonPackage.add(k, array);
} else if (v == null) {
jsonPackage.addNull(k); // null
} else {
jsonPackage.add(k, v.toString()); // String
}
});
jsonPackages.add(jsonPackage);
});
jsonRoot.add("packages", jsonPackages);
log("Write Package Source: " + index);
StringWriter json = new StringWriter();
try (JsonWriter writer =
Json.createWriterFactory(singletonMap(JsonGenerator.PRETTY_PRINTING, true))
.createWriter(json)) {
writer.writeObject(jsonRoot.build());
}
Files.write(index.toPath(), json.toString().trim().getBytes(StandardCharsets.UTF_8));
} catch (IOException e) {
throw new BuildException(e);
}
}
private static void createJsonFile() {
JsonObject model =
Json.createObjectBuilder()
.add("firstName", "Martin")
.add(
"phoneNumbers",
Json.createArrayBuilder()
.add(Json.createObjectBuilder().add("mobile", "1234 56789"))
.add(Json.createObjectBuilder().add("home", "2345 67890")))
.build();
try (JsonWriter jsonWriter =
Json.createWriter(
new FileWriter(
Paths.get(System.getProperty("user.dir"), "target/myData.json").toString()))) {
jsonWriter.write(model);
} catch (IOException e) {
LOGGER.severe("Failed to create file: " + e.getMessage());
}
}
public String JSonObjectBuilderToString(JsonObjectBuilder transJOB) {
String returnString = "";
JsonObject JObject = transJOB.build();
Map<String, Boolean> config = new HashMap<>();
config.put(JsonGenerator.PRETTY_PRINTING, true);
JsonWriterFactory factory = Json.createWriterFactory(config);
// http://blog.eisele.net/2013/02/test-driving-java-api-for-processing.html
StringWriter sw = new StringWriter();
try (JsonWriter jw = factory.createWriter(sw)) {
jw.writeObject(JObject);
}
returnString = sw.toString();
return returnString;
}
@Override
public JsonResource setContents(JsonStructure structure) {
if (structure == null) throw new IllegalArgumentException("JsonStructure must not be null.");
try {
if (!exists()) {
getParent().mkdirs();
if (!createNewFile()) {
throw new IOException("Failed to create file: " + getUnderlyingResourceObject());
}
}
JsonWriterFactory writerFactory =
Json.createWriterFactory(Collections.singletonMap(JsonGenerator.PRETTY_PRINTING, true));
try (OutputStream out =
getFileOperations().createOutputStream(getUnderlyingResourceObject());
JsonWriter writer = writerFactory.createWriter(out)) {
writer.write(structure);
}
} catch (IOException e) {
throw new ResourceException("Error while setting the Json contents", e);
}
return this;
}