I want to get followers Id's for a particular userId using java program. where I want to implement the cursor concept with rate limit set ... Can any one post me the code.
Use the following code snippet to get follower id. After getting the ids you use show user to get other details. Remember to use this code in background thread like in asynctask.
long[] tempids = null;
ConfigurationBuilder config =
new ConfigurationBuilder()
.setOAuthConsumerKey(custkey)
.setOAuthConsumerSecret(custsecret)
.setOAuthAccessToken(accesstoken)
.setOAuthAccessTokenSecret(accesssecret);
twitter1 = new TwitterFactory(config.build()).getInstance();
while(cursor != 0) {
try {
IDs temp = twitter1.friendsFollowers().getFollowersIDs("username", cursor);
cursor = temp.getNextCursor();
tempids = temp.getIDs();
} catch (twitter4j.TwitterException e) {
System.out.println("twitter: failed");
e.printStackTrace();
return null;
}
if(tempids != null) {
for (long id : tempids) {
ids.add(id);
System.out.println("followerID: " + id);
}
}
}
Below is some basic code that's a part of our Create controller method. If a certain checkbox is selected, we want to create a copy of the agenttransmission object we are currently creating, with a couple fields altered.
When the program goes into the helper method, it creates the sub record without incident, however for some reason, when the program finishes and comes back to the Create method, the model object agenttransmission becomes the sub model object. All value, including the PK are suddenly pressent in the agenttransmission object.
Not sure how this is happening since there is a string return value on the helper method and no fields are touched on the agenttransmission record.
Create method
//Create substat if requested
if (agenttransmission.OverrideId)
{
status += ". " + CreateSubStat(agenttransmission);
}
Helper method
public string CreateSubStat(AgentTransmission master)
{
string msg = string.Empty;
if (ModelState.IsValid)
{
using (AgentResourcesEntities tempDb = new AgentResourcesEntities())
{
try
{
//Check to see if substat already exists
var check = (from a in db.AgentTransmission
where a.ParentId == master.ID && a.RecordStatus.Equals("P")
select a).ToList();
if (check.Count > 0) return string.Empty;
//If not add dependent record
AgentTransmission sub = master;
sub.OverrideId = false;
sub.DRMCompanyId = string.Empty;
sub.CONCode = "00";
sub.RecordStatus = "P";
sub.ParentId = master.ID;
sub.ID = 0;
sub.IsSubstat = true;
sub.SendToDynamicsOptions = "N";
sub.SendToNMF = false;
//Remove blanks from ClearinghousePartners list
sub.ClearinghousePartners.RemoveAll(
x =>
string.IsNullOrWhiteSpace(x.ClearingHouseName) &&
string.IsNullOrWhiteSpace(x.TradingPartnerName) && x.StartDate == null);
sub.AgentRelationshipCodes.RemoveAll(
x =>
string.IsNullOrWhiteSpace(x.RelationshipId) &&
!x.EffectiveDate.HasValue && x.Id == 0);
foreach (var item in sub.AgentRelationshipCodes)
{
item.LastChangeDate = DateTime.Now;
item.LastChangeId = SecurityRules.GetUserName(User);
item.AgentTransmission = sub;
item.AgtTableId = sub.ID;
}
foreach (var item in sub.ClearinghousePartners)
{
item.AgentTransmission = sub;
item.AgtTransId = sub.ID;
}
db.AgentTransmission.Add(sub);
db.SaveChanges();
msg = "Substat saved with status of 'Dependent'.";
}
catch (DbEntityValidationException dbEx)
{
msg = "Error creating substat. IT has been informed and will respond shortly.";
SendEmail.ErrorMail(dbEx.Message, SecurityRules.GetUserName(User));
}
catch (Exception ex)
{
msg = "Error creating substat. IT has been informed and will respond shortly.";
SendEmail.ErrorMail(ex, SecurityRules.GetUserName(User));
}
}
}
else
{
//Invalid ModelState error handling
string messages = string.Join("; ", ModelState.Values
.SelectMany(x => x.Errors)
.Select(x => x.ErrorMessage));
SendEmail.ErrorMail("Error Creating Substat: " + messages, SecurityRules.GetUserName(User));
msg = "Error creating substat. IT has been informed and will respond shortly.";
}
return msg;
}
The line...
AgentTransmission sub = master;
...doesn't copy master to sub, but assigns it to sub, because AgentTransmission is a reference type. So everything you do to sub you do to master.
You either must clone master to sub (create a new object and copy its properties), or re-fetch the master object from the database after the CreateSubStat call.
I am creating a webpage having CellTable.I need to feed this table with data from hbase table.
I have written a method to retrieve data from hbase table and tested it.
But when I call that method as GWT asynchronous RPC method then rpc call succeeds but it returns nothing.In my case it returns empty list.The alert box show list's size as 0.
Following is the related code.
Please help.
greetingService.getDeviceIDData(new AsyncCallback<List<DeviceDriverBean>>(){
public void onFailure(Throwable caught) {
// Show the RPC error message to the user
System.out.println("RPC Call failed");
Window.alert("Data : RPC call failed");
}
public void onSuccess(List<DeviceDriverBean> result) {
//on success do something
Window.alert("Data : RPC call successful");
//deviceDataList.addAll(result);
Window.alert("Result size: " +result.size());
// Add a text column to show the driver name.
TextColumn<DeviceDriverBean> nameColumn = new TextColumn<DeviceDriverBean>() {
#Override
public String getValue(DeviceDriverBean object) {
Window.alert(object.getName());
return object.getName();
}
};
table.addColumn(nameColumn, "Name");
// Add a text column to show the device id
TextColumn<DeviceDriverBean> deviceidColumn = new TextColumn<DeviceDriverBean>() {
#Override
public String getValue(DeviceDriverBean object) {
return object.getDeviceId();
}
};
table.addColumn(deviceidColumn, "Device ID");
table.setRowCount(result.size(), true);
// more code here to add columns in celltable
// Push the data into the widget.
table.setRowData(0, result);
SimplePager pager = new SimplePager();
pager.setDisplay(table);
VerticalPanel vp = new VerticalPanel();
vp.add(table);
vp.add(pager);
// Add it to the root panel.
RootPanel.get("datagridContainer").add(vp);
}
});
Code to retrieve data from hbase (server side code)
public List<DeviceDriverBean> getDeviceIDData()
throws IllegalArgumentException {
List<DeviceDriverBean> deviceidList = new ArrayList<DeviceDriverBean>();
// Escape data from the client to avoid cross-site script
// vulnerabilities.
/*
* input = escapeHtml(input); userAgent = escapeHtml(userAgent);
*
* return "Hello, " + input + "!<br><br>I am running " + serverInfo +
* ".<br><br>It looks like you are using:<br>" + userAgent;
*/
try {
Configuration config = HbaseConnectionSingleton.getInstance()
.HbaseConnect();
HTable testTable = new HTable(config, "driver_details");
byte[] family = Bytes.toBytes("details");
Scan scan = new Scan();
int cnt = 0;
ResultScanner rs = testTable.getScanner(scan);
for (Result r = rs.next(); r != null; r = rs.next()) {
DeviceDriverBean deviceDriverBean = new DeviceDriverBean();
byte[] rowid = r.getRow(); // Category, Date, Sentiment
NavigableMap<byte[], byte[]> map = r.getFamilyMap(family);
Iterator<Entry<byte[], byte[]>> itrt = map.entrySet()
.iterator();
deviceDriverBean.setDeviceId(Bytes.toString(rowid));
while (itrt.hasNext()) {
Entry<byte[], byte[]> entry = itrt.next();
//cnt++;
//System.out.println("Count : " + cnt);
byte[] qual = entry.getKey();
byte[] val = entry.getValue();
if (Bytes.toString(qual).equalsIgnoreCase("account_number")) {
deviceDriverBean.setAccountNo(Bytes.toString(val));
} else if (Bytes.toString(qual).equalsIgnoreCase("make")) {
deviceDriverBean.setMake(Bytes.toString(val));
} else if (Bytes.toString(qual).equalsIgnoreCase("model")) {
deviceDriverBean.setModel(Bytes.toString(val));
} else if (Bytes.toString(qual).equalsIgnoreCase("driver_name")) {
deviceDriverBean.setName(Bytes.toString(val));
} else if (Bytes.toString(qual).equalsIgnoreCase("premium")) {
deviceDriverBean.setPremium(Bytes.toString(val));
} else if (Bytes.toString(qual).equalsIgnoreCase("year")) {
deviceDriverBean.setYear(Bytes.toString(val));
} else {
System.out.println("No match found");
}
/*
* System.out.println(Bytes.toString(rowid) + " " +
* Bytes.toString(qual) + " " + Bytes.toString(val));
*/
}
deviceidList.add(deviceDriverBean);
}
}
catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
catch (Exception e) {
// System.out.println("Message: "+e.getMessage());
e.printStackTrace();
}
return deviceidList;
}
Could this be lazy fetching on the server side by hbase. This means if you return the list hbase won't get a trigger to actually read the list and you will simple get an empty list. I don't know a correct solution, in the past I've seen a similar problem on GAE. This could by solved by simply asking the size of the list just before returning it to the client.
I don't have the exact answer, but I have an advise. In similar situation I put my own trace to check every step in my program.
On the server side before return put : System.out.println("size of table="+deviceidList.size());
You can put this trace in the loop for deviceidList;
I have a problem. When I try to use the "Select distinct" in HSQLDB, the stream of results returns me all rows instead of me returning only distinct rows.
I've tried the following syntax:
SELECT DISTINCT FROM ratings UserID order by UserID;
SELECT DISTINCT (UserID) FROM ratings order by UserID;
SELECT DISTINCT UserID FROM ratings;
SELECT DISTINCT (UserID) FROM ratings;
None of them works. What is the problem?
If anyone able to help me I appreciate.
Thank you.
The function code where I perform the action is as follows:
private void readUserFile(String filename) {
try {
//Verify if file users exists
boolean exists = (new File(filename)).exists();
if (!exists) {
//If file users not exists create one, bases on distinct users that exist in ratings table
ResultSet rsUsers = jdbcTemplate.getDataSource().getConnection().createStatement().executeQuery("SELECT DISTINCT UserID FROM ratings order by UserID;");
List<String> users = new ArrayList<String>();
while (rsUsers.next()) {
users.add(String.valueOf(rsUsers.getInt(1)));
}
rsUsers.close();
//Create and write to file
BufferedWriter f = null;
f = new BufferedWriter(new FileWriter(filename));
for (String user : users) {
f.write(user);
f.newLine();
}
f.close();
}
PreparedStatement prstInsert = con.prepareStatement("INSERT INTO users VALUES (?)");
BufferedReader in = new BufferedReader(new FileReader(filename));
int i = 0;
while (true) {
String s = in.readLine();
if (s == null) { // end of file
log.info("Total imported users: " + i);
break;
}
i++;
int userid = Integer.parseInt(s);
prstInsert.setInt(1, userid);
if (i != 0 && Math.round((double) i / 100) == ((double) i / 100)) {
log.info("Imported users: " + i);
}
prstInsert.executeUpdate();
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
Background
Our Eclipse RCP 3.6-based application lets people drag files in for storage/processing. This works fine when the files are dragged from a filesystem, but not when people drag items (messages or attachments) directly from Outlook.
This appears to be because Outlook wants to feed our application the files via a FileGroupDescriptorW and FileContents, but SWT only includes a FileTransfer type. (In a FileTransfer, only the file paths are passed, with the assumption that the receiver can locate and read them. The FileGroupDescriptorW/FileContents approach can supply files directly application-to-application without writing temporary files out to disk.)
We have tried to produce a ByteArrayTransfer subclass that could accept FileGroupDescriptorW and FileContents. Based on some examples on the Web, we were able to receive and parse the FileGroupDescriptorW, which (as the name implies) describes the files available for transfer. (See code sketch below.) But we have been unable to accept the FileContents.
This seems to be because Outlook offers the FileContents data only as TYMED_ISTREAM or TYMED_ISTORAGE, but SWT only understands how to exchange data as TYMED_HGLOBAL. Of those, it appears that TYMED_ISTORAGE would be preferable, since it's not clear how TYMED_ISTREAM could provide access to multiple files' contents.
(We also have some concerns about SWT's desire to pick and convert only a single TransferData type, given that we need to process two, but we think we could probably hack around that in Java somehow: it seems that all the TransferDatas are available at other points of the process.)
Questions
Are we on the right track here? Has anyone managed to accept FileContents in SWT yet? Is there any chance that we could process the TYMED_ISTORAGE data without leaving Java (even if by creating a fragment-based patch to, or a derived version of, SWT), or would we have to build some new native support code too?
Relevant code snippets
Sketch code that extracts file names:
// THIS IS NOT PRODUCTION-QUALITY CODE - FOR ILLUSTRATION ONLY
final Transfer transfer = new ByteArrayTransfer() {
private final String[] typeNames = new String[] { "FileGroupDescriptorW", "FileContents" };
private final int[] typeIds = new int[] { registerType(typeNames[0]), registerType(typeNames[1]) };
#Override
protected String[] getTypeNames() {
return typeNames;
}
#Override
protected int[] getTypeIds() {
return typeIds;
}
#Override
protected Object nativeToJava(TransferData transferData) {
if (!isSupportedType(transferData))
return null;
final byte[] buffer = (byte[]) super.nativeToJava(transferData);
if (buffer == null)
return null;
try {
final DataInputStream in = new DataInputStream(new ByteArrayInputStream(buffer));
long count = 0;
for (int i = 0; i < 4; i++) {
count += in.readUnsignedByte() << i;
}
for (int i = 0; i < count; i++) {
final byte[] filenameBytes = new byte[260 * 2];
in.skipBytes(72); // probable architecture assumption(s) - may be wrong outside standard 32-bit Win XP
in.read(filenameBytes);
final String fileNameIncludingTrailingNulls = new String(filenameBytes, "UTF-16LE");
int stringLength = fileNameIncludingTrailingNulls.indexOf('\0');
if (stringLength == -1)
stringLength = 260;
final String fileName = fileNameIncludingTrailingNulls.substring(0, stringLength);
System.out.println("File " + i + ": " + fileName);
}
in.close();
return buffer;
}
catch (final Exception e) {
return null;
}
}
};
In the debugger, we see that ByteArrayTransfer's isSupportedType() ultimately returns false for the FileContents because the following test is not passed (since its tymed is TYMED_ISTREAM | TYMED_ISTORAGE):
if (format.cfFormat == types[i] &&
(format.dwAspect & COM.DVASPECT_CONTENT) == COM.DVASPECT_CONTENT &&
(format.tymed & COM.TYMED_HGLOBAL) == COM.TYMED_HGLOBAL )
return true;
This excerpt from org.eclipse.swt.internal.ole.win32.COM leaves us feeling less hope for an easy solution:
public static final int TYMED_HGLOBAL = 1;
//public static final int TYMED_ISTORAGE = 8;
//public static final int TYMED_ISTREAM = 4;
Thanks.
even if
//public static final int TYMED_ISTREAM = 4;
Try below code.. it should work
package com.nagarro.jsag.poc.swtdrag;
imports ...
public class MyTransfer extends ByteArrayTransfer {
private static int BYTES_COUNT = 592;
private static int SKIP_BYTES = 72;
private final String[] typeNames = new String[] { "FileGroupDescriptorW", "FileContents" };
private final int[] typeIds = new int[] { registerType(typeNames[0]), registerType(typeNames[1]) };
#Override
protected String[] getTypeNames() {
return typeNames;
}
#Override
protected int[] getTypeIds() {
return typeIds;
}
#Override
protected Object nativeToJava(TransferData transferData) {
String[] result = null;
if (!isSupportedType(transferData) || transferData.pIDataObject == 0)
return null;
IDataObject data = new IDataObject(transferData.pIDataObject);
data.AddRef();
// Check for descriptor format type
try {
FORMATETC formatetcFD = transferData.formatetc;
STGMEDIUM stgmediumFD = new STGMEDIUM();
stgmediumFD.tymed = COM.TYMED_HGLOBAL;
transferData.result = data.GetData(formatetcFD, stgmediumFD);
if (transferData.result == COM.S_OK) {
// Check for contents format type
long hMem = stgmediumFD.unionField;
long fileDiscriptorPtr = OS.GlobalLock(hMem);
int[] fileCount = new int[1];
try {
OS.MoveMemory(fileCount, fileDiscriptorPtr, 4);
fileDiscriptorPtr += 4;
result = new String[fileCount[0]];
for (int i = 0; i < fileCount[0]; i++) {
String fileName = handleFile(fileDiscriptorPtr, data);
System.out.println("FileName : = " + fileName);
result[i] = fileName;
fileDiscriptorPtr += BYTES_COUNT;
}
} catch (Exception e) {
e.printStackTrace();
} finally {
OS.GlobalFree(hMem);
}
}
} finally {
data.Release();
}
return result;
}
private String handleFile(long fileDiscriptorPtr, IDataObject data) throws Exception {
// GetFileName
char[] fileNameChars = new char[OS.MAX_PATH];
byte[] fileNameBytes = new byte[OS.MAX_PATH];
COM.MoveMemory(fileNameBytes, fileDiscriptorPtr, BYTES_COUNT);
// Skip some bytes.
fileNameBytes = Arrays.copyOfRange(fileNameBytes, SKIP_BYTES, fileNameBytes.length);
String fileNameIncludingTrailingNulls = new String(fileNameBytes, "UTF-16LE");
fileNameChars = fileNameIncludingTrailingNulls.toCharArray();
StringBuilder builder = new StringBuilder(OS.MAX_PATH);
for (int i = 0; fileNameChars[i] != 0 && i < fileNameChars.length; i++) {
builder.append(fileNameChars[i]);
}
String name = builder.toString();
try {
File file = saveFileContent(name, data);
if (file != null) {
System.out.println("File Saved # " + file.getAbsolutePath());
;
}
} catch (IOException e) {
System.out.println("Count not save file content");
;
}
return name;
}
private File saveFileContent(String fileName, IDataObject data) throws IOException {
File file = null;
FORMATETC formatetc = new FORMATETC();
formatetc.cfFormat = typeIds[1];
formatetc.dwAspect = COM.DVASPECT_CONTENT;
formatetc.lindex = 0;
formatetc.tymed = 4; // content.
STGMEDIUM stgmedium = new STGMEDIUM();
stgmedium.tymed = 4;
if (data.GetData(formatetc, stgmedium) == COM.S_OK) {
file = new File(fileName);
IStream iStream = new IStream(stgmedium.unionField);
iStream.AddRef();
try (FileOutputStream outputStream = new FileOutputStream(file)) {
int increment = 1024 * 4;
long pv = COM.CoTaskMemAlloc(increment);
int[] pcbWritten = new int[1];
while (iStream.Read(pv, increment, pcbWritten) == COM.S_OK && pcbWritten[0] > 0) {
byte[] buffer = new byte[pcbWritten[0]];
OS.MoveMemory(buffer, pv, pcbWritten[0]);
outputStream.write(buffer);
}
COM.CoTaskMemFree(pv);
} finally {
iStream.Release();
}
return file;
} else {
return null;
}
}
}
Have you looked at https://bugs.eclipse.org/bugs/show_bug.cgi?id=132514 ?
Attached to this bugzilla entry is an patch (against an rather old version of SWT) that might be of interest.
I had the same problem and created a small library providing a Drag'n Drop Transfer Class for JAVA SWT. It can be found here:
https://github.com/HendrikHoetker/OutlookItemTransfer
Currently it supports dropping Mail Items from Outlook to your Java SWT application and will provide a list of OutlookItems with the Filename and a byte array of the file contents.
All is pure Java and in-memory (no temp files).
Usage in your SWT java application:
if (OutlookItemTransfer.getInstance().isSupportedType(event.currentDataType)) {
Object o = OutlookItemTransfer.getInstance().nativeToJava(event.currentDataType);
if (o != null && o instanceof OutlookMessage[]) {
OutlookMessage[] outlookMessages = (OutlookMessage[])o;
for (OutlookMessage msg: outlookMessages) {
//...
}
}
}
The OutlookItem will then provide two elements: filename as String and file contents as array of byte.
From here on, one could write it to a file or further process the byte array.
To your question above:
- What you find in the file descriptor is the filename of the outlook item and a pointer to an IDataObject
- the IDataObject can be parsed and will provide an IStorage object
- The IStorageObject will be then a root container providing further sub-IStorageObjects or IStreams similar to a filesystem (directory = IStorage, file = IStream
You find those elements in the following lines of code:
Get File Contents, see OutlookItemTransfer.java, method nativeToJava:
FORMATETC format = new FORMATETC();
format.cfFormat = getTypeIds()[1];
format.dwAspect = COM.DVASPECT_CONTENT;
format.lindex = <fileIndex>;
format.ptd = 0;
format.tymed = TYMED_ISTORAGE | TYMED_ISTREAM | COM.TYMED_HGLOBAL;
STGMEDIUM medium = new STGMEDIUM();
if (data.GetData(format, medium) == COM.S_OK) {
// medium.tymed will now contain TYMED_ISTORAGE
// in medium.unionfield you will find the root IStorage
}
Read the root IStorage, see CompoundStorage, method readOutlookStorage:
// open IStorage object
IStorage storage = new IStorage(pIStorage);
storage.AddRef();
// walk through the content of the IStorage object
long[] pEnumStorage = new long[1];
if (storage.EnumElements(0, 0, 0, pEnumStorage) == COM.S_OK) {
// get storage iterator
IEnumSTATSTG enumStorage = new IEnumSTATSTG(pEnumStorage[0]);
enumStorage.AddRef();
enumStorage.Reset();
// prepare statstg structure which tells about the object found by the iterator
long pSTATSTG = OS.GlobalAlloc(OS.GMEM_FIXED | OS.GMEM_ZEROINIT, STATSTG.sizeof);
int[] fetched = new int[1];
while (enumStorage.Next(1, pSTATSTG, fetched) == COM.S_OK && fetched[0] == 1) {
// get the description of the the object found
STATSTG statstg = new STATSTG();
COM.MoveMemory(statstg, pSTATSTG, STATSTG.sizeof);
// get the name of the object found
String name = readPWCSName(statstg);
// depending on type of object
switch (statstg.type) {
case COM.STGTY_STREAM: { // load an IStream (=File)
long[] pIStream = new long[1];
// get the pointer to the IStream
if (storage.OpenStream(name, 0, COM.STGM_DIRECT | COM.STGM_READ | COM.STGM_SHARE_EXCLUSIVE, 0, pIStream) == COM.S_OK) {
// load the IStream
}
}
case COM.STGTY_STORAGE: { // load an IStorage (=SubDirectory) - requires recursion to traverse the sub dies
}
}
}
}
// close the iterator
enumStorage.Release();
}
// close the IStorage object
storage.Release();