Develop Reference

Flatbuffer writing in binary file in android give only single response

I am new at flatbuffer. I had created a schema file from outside the project and adding the user(Monster as in Flatbuffer document) inside the binary via java code in android. everything works fine. but the time of reading binary file data it only gives me the user length 1. I had added 3 people but it's give me the length of monsters is 1 at the time of reading. can anyone help to figure this out. Here is the code->
this is the full code ->
enter code here
builder = new FlatBufferBuilder(1024);
public void addNewData(String emailOffset, String nameOffset,String
contactNoOffset, String DOJOffset, String departmentOffset,
String empIdOffset, float[] embeddingOffset)
{
int storeembedd = SingleJson.createEmbeddingVector(builder,
embeddingOffset);
int hereEmailOffset = builder.createString(emailOffset);
int hereNameOffset = builder.createString(nameOffset);
int hereContactOffset = builder.createString(contactNoOffset);
int hereDOJOffset = builder.createString(DOJOffset);
int hereDepartmentOffset=builder.createString(departmentOffset);
int hereImpIdOffset = builder.createString(empIdOffset);
int test = SingleJson.createSingleJson(builder, hereEmailOffset,
hereNameOffset, hereContactOffset
, hereDOJOffset, hereDepartmentOffset, hereImpIdOffset,
storeembedd);
int [] offsetOfMonster = new int[1];
offsetOfMonster[0] = test;
int temp = Monsters.createMonstersVector(builder,
offsetOfMonster);
Monsters.startMonsters(builder);
Monsters.addMonsters(builder, temp);
int orc = Monsters.endMonsters(builder);
builder.finish(orc);
byte[] buf1 = builder.sizedByteArray();
openAndAppenedInBinary(buf1);
}
private void openAndAppenedInBinary(byte[] buf1) {
FileOutputStream output = null;
try {
InputStream inputStream = new FileInputStream(newFile());
byte[] buffer = new byte[inputStream.available()];
if (inputStream.available() == 0) {
output = new FileOutputStream(newFile(), true);
output.write(buf1);
} else {
while (inputStream.read(buffer) != -1) {
output = new FileOutputStream(newFile(), true);
output.write(buffer);
output.write(buf1);
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
try {
output.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private String newFile() {
File file = new File(Environment.getExternalStorageDirectory()
+ "/Android/data/"
+ context.getPackageName()
+ "/binFile");
if (!file.exists()) {
if (!file.mkdir()) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
try {
Path dir = Paths.get(file.getAbsolutePath());
Files.createDirectory(dir);
} catch (IOException e) {
Path parentDir = Paths.get(file.getParent());
if (!Files.exists(parentDir)) {
try {
Files.createDirectories(parentDir);
} catch (IOException e1) {
e1.printStackTrace();
}
}
}
}
}
}
File binFile = new File(file, "renamed.bin");
try {
FileWriter writer = new FileWriter(binFile);
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
return binFile.getAbsolutePath();
}
here is my reading code of flatbiffer->
new FlatParsingForPerticularId().execute(readRawResource(R.raw.renamed));//renamed is my bin file
private class FlatParsingForPerticularId extends AsyncTask {
#Override
protected String doInBackground(Object... params) {
byte[] buffer = (byte[]) params[0];
long startTime = System.currentTimeMillis();
ByteBuffer bb = ByteBuffer.wrap(buffer);
Monsters monsterList = Monsters.getRootAsMonsters(bb);
int length = monsterList.monstersLength();
SingleJson monster = null;
for (int i = 0; i < length; i++) {//here I m getting length 1 intead of 3
monster = monsterList.monsters(i);
if (i == outputval[0]) {
outputval[0] = (int) monster.EmpNo();
break;
}
}
long endTime = System.currentTimeMillis() - startTime;
String textToShow = "Elements: " + monsterList.monstersLength() + ": load time: " + endTime + "ms";
String[] monsterArr = monster.Name().split(" ");
return monsterArr[0];
}

Stax Parses Twice

I am trying to fetch parents from below xml with stax, note that there can be multiple parents and childs at the same structure.
<sm:Structure>
<sm:Parent>
<sm:parentCode>PARENT-CODE-1</sm:parentCode>
<sm:parentName>PARENT-NAME-1</sm:parentName>
</sm:Parent>
<sm:Child>
<sm:childCode>CHILD-CODE-1</sm:childCode>
<sm:childName>CHILD-NAME-1</sm:childName>
<sm:parentCode>PARENT-CODE-1</sm:parentCode>
</sm:Child>
</sm:Structure>
With the following code:
XMLStreamReader xmlr = null;
try {
XMLInputFactory xmlif = XMLInputFactory.newInstance();
File file = new File(fileName);
xmlr = xmlif.createXMLStreamReader(new FileReader(file));
JAXBContext context = JAXBContext.newInstance(type);
Unmarshaller unmarshaller = context.createUnmarshaller();
while (xmlr.hasNext() && (!xmlr.isStartElement() || !xmlr.getLocalName().equalsIgnoreCase(localName))) {
xmlr.next();
}
List<T> objectList = new ArrayList<>();
int numberOfRead = 0, chunkIndex = 0;
StopWatch watch = new StopWatch();
watch.start();
while (xmlr.getEventType() == XMLStreamConstants.START_ELEMENT) {
if (numberOfRead == chunkSize) {
chunkConsumer.consumeChunk(objectList, chunkIndex, chunkSize, breakChildProcessOnParentError));
numberOfRead = 0;
chunkIndex++;
objectList = new ArrayList<>();
}
JAXBElement<T> objNode = unmarshaller.unmarshal(xmlr, type);
T obj = objNode.getValue();
objectList.add(obj);
numberOfRead++;
if (xmlr.getEventType() == XMLStreamConstants.CHARACTERS) {
xmlr.next();
}
}
if (numberOfRead != 0) {
chunkConsumer.consumeChunk(objectList, chunkIndex, chunkSize, breakChildProcessOnParentError));
}
watch.stop();
log.info("Time Elapsed to trigger all " + type.getName() + "-Chunk-Consumers: " +
watch.toSplitString());
} catch (Exception e) {
throw new CustomException("Error during " + type.getName()+ "-Chunk-Consumer process.", e);
} finally {
try {
if (xmlr != null) {
xmlr.close();
}
} catch (Exception exception) {
log.error(exception.getMessage(), exception);
}
}
It reads the parent twice interestingly, first one is okay, second one without parentName. Why it is parsing twice?

Missed a condition in while, adding resolved my problem.
while (xmlr.getEventType() == XMLStreamConstants.START_ELEMENT && xmlr.getLocalName().equalsIgnoreCase(localName)) {

Parsing xml with & < > " ' by java DOM parser

Good day ppl.
I have class:
public class XmlModifier {
private DocumentBuilderFactory docFactory = null;
private DocumentBuilder docBuilder = null;
private Document document = null;
private TransformerFactory transformFactory = null;
private Transformer transform = null;
private DOMSource source = null;
private StreamResult streamRes = null;
private boolean exepDocBuilderAlarm = true;
public XmlModifier() {
this.docFactory = DocumentBuilderFactory.newInstance();
try {
this.docBuilder = docFactory.newDocumentBuilder();
} catch (ParserConfigurationException e) {
this.exepDocBuilderAlarm = false;
e.printStackTrace();
}
}
public void prepareXMLMessage(File file, String userName, String userPassword, String reqId, Integer NUMBER_OF_MSG_SENDS) {
if (exepDocBuilderAlarm != false) {
try {
document = docBuilder.parse(file);
setElementValues("si:sourceInfo", addElementsToArray("si:reqId,si:reqTag"), addElementsToArray(reqId + "," + reqId), NUMBER_OF_MSG_SENDS);
setElementValues("usr:user", addElementsToArray("usr:id,usr:password"), addElementsToArray(userName + "," + userPassword), NUMBER_OF_MSG_SENDS);
setElementValues("meth:method", addElementsToArray("meth:id,meth:tag"), addElementsToArray(reqId + "," + reqId), NUMBER_OF_MSG_SENDS);
setElementValues("tb:tradeField", addElementsToArray("tb:value"), addElementsToArray(reqId), NUMBER_OF_MSG_SENDS);
this.transformFactory = TransformerFactory.newInstance();
this.transform = transformFactory.newTransformer();
this.source = new DOMSource(document);
this.streamRes = new StreamResult(file);
this.transform.transform(source, streamRes);
System.out.println("Done to execute XmlModifier");
} catch (Exception e) {
e.printStackTrace();
} finally {
this.docFactory = null;
this.docBuilder = null;
this.transformFactory = null;
this.transform = null;
this.source = null;
this.streamRes = null;
}
}
}
private void setElementValues(String rootElement, String[] childElements, String[] childElementsValues, Integer msgIDIncrement) {
Node nodeRootElement = document.getElementsByTagName(rootElement).item(0);
NodeList childElementlist = nodeRootElement.getChildNodes();
for (int i = 0; i < childElements.length; i++) {
for (int z = 0; z < childElementlist.getLength(); z++) {
Node node = childElementlist.item(z);
if (childElements[i].equals(node.getNodeName())) {
node.setTextContent(childElementsValues[i]);
}
}
}
}
private String[] addElementsToArray(String elements) {
String[] theArray = null;
theArray = elements.split(",");
return theArray;
}
}
On input I have xml which is not well formed sometimes. The problem of DOM parser is that in my point of view DOM parser parsing whole xml from the beggining which my have special symbols like < > & " ' is not good for me.
How can I on input to prepareXMLMessage(..) provide xml with < > & " ', then in prepareXMLMessage(..) parse it with no problems(change some values inside elements) and than as output provide xml with < > & " ' back???
Thank you for help.

Extracting files in .iso using jSevenZip

I'm trying to extract the files in an .iso file I have. There are no errors and the console prints out all the files inside. However, none of the files get extracted. Any help is greatly appreciated!
I was able to find this link but I can't seem to integrate it in to my project.
Link to code example
class DownloadWorker extends SwingWorker<String, Object> {
private String flocation;
private JLabel out;
public DownloadWorker(String location, JLabel fout)
{
this.flocation = location;
this.out = fout;
}
#Override
public String doInBackground() {
//download here
out.setText("Beginning download. This may take a few minutes.");
try {
//ProgressBar/Install
System.out.println("FILELOCATION:\n----------");
System.out.println(flocation);
String URL_LOCATION = "http://www.futureretrogaming.tk/gamefiles/ProfessorPhys.iso";
String LOCAL_FILE = (flocation + "\\ProfessorPhys\\");
File localfile = new File(LOCAL_FILE);
if (localfile.exists()) {
System.out.println("Directory exists!");
}
else {
System.out.println("Directory doesn't exist! Creating...");
localfile.mkdir();
if (localfile.exists())
System.out.println("Directory created!");
}
System.out.println("LOCALFILE:\n-------");
System.out.println(LOCAL_FILE);
URL website = new URL(URL_LOCATION);
ReadableByteChannel rbc = Channels.newChannel(website.openStream());
FileOutputStream fos = new FileOutputStream(LOCAL_FILE+"\\ProfessorPhys.iso\\");
fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
System.out.println("--------\nDone Downloading\n---------");
RandomAccessFile randomAccessFile = null;
ISevenZipInArchive inArchive = null;
try {
randomAccessFile = new RandomAccessFile(localfile +"\\ProfessorPhys.iso\\", "r");
inArchive = SevenZip.openInArchive(null, // autodetect archive type
new RandomAccessFileInStream(randomAccessFile));
// Getting simple interface of the archive inArchive
ISimpleInArchive simpleInArchive = inArchive.getSimpleInterface();
System.out.println(" Hash | Size | Filename");
System.out.println("----------+------------+---------");
for (ISimpleInArchiveItem item : simpleInArchive.getArchiveItems()) {
final int[] hash = new int[] { 0 };
if (!item.isFolder()) {
ExtractOperationResult result;
final long[] sizeArray = new long[1];
result = item.extractSlow(new ISequentialOutStream() {
public int write(byte[] data) throws SevenZipException {
hash[0] ^= Arrays.hashCode(data); // Consume data
sizeArray[0] += data.length;
return data.length; // Return amount of consumed data
}
});
if (result == ExtractOperationResult.OK) {
System.out.println(String.format("%9X | %10s | %s", //
hash[0], sizeArray[0], item.getPath()));
} else {
System.err.println("Error extracting item: " + result);
}
}
}
} catch (Exception e) {
System.err.println("Error occurs: " + e);
System.exit(1);
} finally {
if (inArchive != null) {
try {
inArchive.close();
} catch (SevenZipException e) {
System.err.println("Error closing archive: " + e);
}
}
if (randomAccessFile != null) {
try {
randomAccessFile.close();
} catch (IOException e) {
System.err.println("Error closing file: " + e);
}
}
}
} catch (Exception e) {
System.out.println(e);
}
return "done";
}
#Override
protected void done() {
//done
out.setText(out.getText() + "\n Operation Done");
}
}
Code I'm trying to implement:
public class ExtractorUtil {
private static Logger logger = Logger.getLogger(ExtractorUtil.class.getCanonicalName());
public static void extract(File file, String extractPath) throws Exception {
ISevenZipInArchive inArchive = null;
RandomAccessFile randomAccessFile = null;
randomAccessFile = new RandomAccessFile(file, "r");
inArchive = SevenZip.openInArchive(null, new RandomAccessFileInStream(randomAccessFile));
inArchive.extract(null, false, new MyExtractCallback(inArchive, extractPath));
if (inArchive != null) {
inArchive.close();
}
if (randomAccessFile != null) {
randomAccessFile.close();
}
}
public static class MyExtractCallback implements IArchiveExtractCallback {
private final ISevenZipInArchive inArchive;
private final String extractPath;
public MyExtractCallback(ISevenZipInArchive inArchive, String extractPath) {
this.inArchive = inArchive;
this.extractPath = extractPath;
}
#Override
public ISequentialOutStream getStream(final int index, ExtractAskMode extractAskMode) throws SevenZipException {
return new ISequentialOutStream() {
#Override
public int write(byte[] data) throws SevenZipException {
String filePath = inArchive.getStringProperty(index, PropID.PATH);
FileOutputStream fos = null;
try {
File dir = new File(extractPath);
File path = new File(extractPath + filePath);
if (!dir.exists()) {
dir.mkdirs();
}
if (!path.exists()) {
path.createNewFile();
}
fos = new FileOutputStream(path, true);
fos.write(data);
} catch (IOException e) {
logger.severe(e.getLocalizedMessage());
} finally {
try {
if (fos != null) {
fos.flush();
fos.close();
}
} catch (IOException e) {
logger.severe(e.getLocalizedMessage());
}
}
return data.length;
}
};
}

XML parser for android don't read the last child

I have a problem with my parser in my android phone!
here is the code for the XML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<file>
<Staff>
<connection>wifi</connection>
<timestamp>20</timestamp>
<sport>0</sport>
</Staff>
<Staff>
<connection>3g</connection>
<timestamp>40</timestamp>
<sport>0</sport>
</Staff>
<Staff>
<connection>wifi</connection>
<timestamp>60</timestamp>
<sport>0</sport>
</Staff>
<Staff>
<connection>3g</connection>
<timestamp>80</timestamp>
<sport>0</sport>
</Staff>
</file>
and here is the parser code that i have
try {
InputStream filename = null;
Document obj_doc = null;
DocumentBuilderFactory doc_build_fact = null;
DocumentBuilder doc_builder = null;
filename = new FileInputStream("/sdcard/data.xml");
doc_build_fact = DocumentBuilderFactory.newInstance();
doc_builder = doc_build_fact.newDocumentBuilder();
System.out.println("readed data.xml");
obj_doc = doc_builder.parse(filename);
NodeList obj_nod_list = null;
if (null != obj_doc) {
org.w3c.dom.Element feed = obj_doc.getDocumentElement();
obj_nod_list = feed.getElementsByTagName("file");
}
Element root = obj_doc.getDocumentElement();
NodeList items = root.getElementsByTagName("Staff");
System.out.println("items "+items.getLength());
for (int i = 0; i < items.getLength(); i++) {
Node item = items.item(i);
NodeList properties = item.getChildNodes();
System.out.println("properties length "+item.getChildNodes().getLength());
// System.out.println("properties "+properties.getLength());
for (int j = 0; j < items.getLength(); j++) {
Node property = properties.item(j);
// System.out.println("properties "+property.getNodeName());
String name = property.getNodeName();
if (name.equalsIgnoreCase("connection")) {
// Store it where you want
connection.add(property.getFirstChild().getNodeValue());
System.out.println("connection "+connection);
// System.out.println("connection "+connection.get(i));
}
if (name.equalsIgnoreCase("timestamp")) {
int inttimestamp = Integer.parseInt(property.getFirstChild().getNodeValue());
timestamp.add(inttimestamp);
System.out.println("timestamp "+timestamp);
}
if (name.equalsIgnoreCase("sport")) {
int inttimestamp = Integer.parseInt(property.getFirstChild().getNodeValue());
capacity.add(inttimestamp);
System.out.println("capacity "+capacity);
}
}
}
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ParserConfigurationException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SAXException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
when the parsing is done! it can't read the last child! which is sport! can you provide me a solution for it! Also when i change the xml and put the "sport" first, after it can't read the last node! thanks

Use jsoup html parser. Here is the official site. You can use it parsing html, xml etc. It's a tag based parser.

here is an example using the SAX parser it can help you
the parser class:
public class XMLParser extends DefaultHandler
{
// xml Tags name
private final String TENDER_TYPE = "TenderType";
private final String TRX_TYPE = "TransactionType";
private final String DATA_ELEM = "DataElement";
//xml Values
private final String NAME = "Name";
private final String VALUE = "Value";
private final String AMOUNT = "Amount";
private final String T_TYPE = "TenderType";
private final String CLRK_ID = "ClerkId";
private final String INV_NUM = "InvoiceNum";
private final String AUTH = "Authorization";
private final String ORIG_SEQ = "OriginalSequence";
private final String ORIG_REF = "OriginalReference";
private final String TAG = "Tag";
private final String DESCRIPTION = "Description";
//list for imported Config data
private ArrayList<TenderType> theTenderTypeList = null;
private TenderType currentTenderType = null;
private ArrayList<TransactionType> theTrxTypeList = null;
private TransactionType currentTrxType = null;
private ArrayList<DataElement> theDataElementList = null;
private DataElement currentDataElement = null;
#Override
public void startDocument() throws SAXException
{
super.startDocument();
if(theTenderTypeList == null)
{
theTenderTypeList = new ArrayList<TenderType>();
}
if(theTrxTypeList == null)
{
theTrxTypeList = new ArrayList<TransactionType>();
}
if(theDataElementList == null)
{
theDataElementList = new ArrayList<DataElement>();
}
}
#Override
public void startElement(String uri, String localName, String name, Attributes attributes) throws SAXException
{
if (localName.equalsIgnoreCase(TRX_TYPE))
{
this.currentTrxType = new TransactionType(attributes.getValue(NAME),
attributes.getValue(VALUE),attributes.getValue(AMOUNT),
attributes.getValue(T_TYPE),attributes.getValue(CLRK_ID),
attributes.getValue(INV_NUM), attributes.getValue(AUTH),
attributes.getValue(ORIG_SEQ), attributes.getValue(ORIG_REF));
this.theTrxTypeList.add(currentTrxType);
}
else if (localName.equalsIgnoreCase(TENDER_TYPE))
{
this.currentTenderType = new TenderType(attributes.getValue(NAME),
attributes.getValue(VALUE));
theTenderTypeList.add(currentTenderType);
}
else if (localName.equalsIgnoreCase(DATA_ELEM))
{
this.currentDataElement = new DataElement(attributes.getValue(TAG),
attributes.getValue(DESCRIPTION));
theDataElementList.add(currentDataElement);
}
}
public ArrayList<TenderType> getTenderTypeList()
{
return theTenderTypeList;
}
public ArrayList<TransactionType> getTrxTypeList()
{
return theTrxTypeList;
}
public ArrayList<DataElement> getDataElementList()
{
return theDataElementList;
}
}
and then u can call it:
SAXParserFactory fabrique = SAXParserFactory.newInstance();
SAXParser parseur = null;
try
{
parseur = fabrique.newSAXParser();
}
catch (ParserConfigurationException e)
{
System.out.println("Parse Config Exception");
}
catch (SAXException e)
{
System.out.println("SAX Parse Exception");
}
handler = new XMLParser();
try
{
/* Parse Config File */
myFileCfg = new File(FolderPath + CFG_FILE_NAME);
parseur.parse(myFileCfg, handler);
}
catch (SAXException e)

I solved it! it was bad the XML file structure! After i changed it! it worked. thanks for your awnsers