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How to give DynamoDB update expression(if_not_exists) in TransactionaWriteRequest

I am new to DynamoDB and working on a dynamo project. I am trying to update the item amount in a transaction with condition if_not_exists() with TransactionWriteRequest in DynamoDB Mapper.
As per the Doc, transactionWriteRequest.updateItem() takes DynamoDBTransactionWriteExpression which doesn't have any UpdateExpression. Class definition is attached bellow.,
Wanted to know How can i provide the if_not_exists() in DynamoDBTransactionWriteExpression to update the item in a transaction. Or there is no way to do this in a transactionWrite.
Please help here.
Thanks in advance

Judging from the snippet you shared it seems you are using Java SDK v1. Below is a code snippet which has 1 PutItem and 1 UpdateItem combined in a single TransactWrite request.
AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard().build();
final String ORDER_TABLE_NAME = "test1";
/*
Update Item with condition
*/
HashMap<String,AttributeValue> myPk =
new HashMap<String,AttributeValue>();
myPk.put("pk", new AttributeValue("pkValue1"));
Map<String, AttributeValue> expressionAttributeValues = new HashMap<>();
expressionAttributeValues.put(":new_status", new AttributeValue("SOLD"));
Update markItemSold = new Update()
.withTableName(ORDER_TABLE_NAME)
.withKey(myPk)
.withUpdateExpression("SET ProductStatus = if_not_exists(createdAt, :new_status)")
.withExpressionAttributeValues(expressionAttributeValues)
.withReturnValuesOnConditionCheckFailure(ReturnValuesOnConditionCheckFailure.ALL_OLD);
/*
Put Item
*/
HashMap<String, AttributeValue> orderItem = new HashMap<>();
orderItem.put("pk", new AttributeValue("pkValue2"));
orderItem.put("OrderTotal", new AttributeValue("100"));
Put createOrder = new Put()
.withTableName(ORDER_TABLE_NAME)
.withItem(orderItem)
.withReturnValuesOnConditionCheckFailure(ReturnValuesOnConditionCheckFailure.ALL_OLD);
/*
Transaction
*/
Collection<TransactWriteItem> actions = Arrays.asList(
new TransactWriteItem().withUpdate(markItemSold),
new TransactWriteItem().withPut(createOrder));
TransactWriteItemsRequest placeOrderTransaction = new TransactWriteItemsRequest()
.withTransactItems(actions)
.withReturnConsumedCapacity(ReturnConsumedCapacity.TOTAL);
try {
client.transactWriteItems(placeOrderTransaction);
System.out.println("Transaction Successful");
} catch (ResourceNotFoundException rnf) {
System.err.println("One of the table involved in the transaction is not found" + rnf.getMessage());
} catch (InternalServerErrorException ise) {
System.err.println("Internal Server Error" + ise.getMessage());
} catch (TransactionCanceledException tce) {
System.out.println("Transaction Canceled " + tce.getMessage());
} catch (AmazonServiceException e){
System.out.println(e.getMessage());
}

With the v2 version of the SDK you can do it like this
var table =
enhancedClient.table(<table name>, TableSchema.fromClass(DynamoEntity.class));
var transactWriteItemsEnhancedRequest = TransactWriteItemsEnhancedRequest
.builder()
.addUpdateItem(table,
TransactUpdateItemEnhancedRequest.builder(LoadTestEntity.class)
.item(<entity>)
.conditionExpression(Expression.builder().expression("attribute_not_exists(ID)").build())
.build())
.build();
enhancedClient.transactWriteItems(transactWriteItemsEnhancedRequest);
You might need to play around with the expression builder, I haven't tested it.

Unable to mock accountStatus with Mockito

From below piece of code I am not able to mock checkAccountStatus and its coming as null. What changes do I need to do to resolve this issue?
Class
public AccessIDSearchResponse searchAccessID(AccessIDSearchRequest accessIDRequest) {
String[] productTypes = accessIDRequest.getProductTypes();
AccountResponse actResponse = checkAccountStatus(accessIDRequest);
System.out.println("Response is---->"+JsonService.getJsonFromObject(actResponse));
if (accessIDRequest.getSearchtype().equalsIgnoreCase("accountId") && !Utility.isEmpty(actResponse)
&& !"FREEVIEW".equalsIgnoreCase(actResponse.getAccountStatus())) {
errorHandler.error(ErrorMessages.EPO_EXISTINGTV_ERR_07, ErrorMessages.ACCESS_ID_NOT_FOUND);
}
}
public AccountResponse checkAccountStatus(AccessIDSearchRequest request) {
AccessIDSearchResponse response = new AccessIDSearchResponse();
SearchAccessIdContent content = new SearchAccessIdContent();
DTVNAccountDetails accountDetails = new DTVNAccountDetails();
accountDetails.setAccountNumber(request.getSearchvalue());
List<DTVNAccountDetails> list = new ArrayList<>();
list.add(accountDetails);
content.setDtvAccountList(list);
response.setContent(content);
return helper.getAccountStatus(response);
}
Helper
public AccountResponse getAccountStatus(AccessIDSearchResponse accessIDResponse) {
AccountResponse accountResponse = null;
AccountRequest request = new AccountRequest();
Account account = new Account();
account.setCustomerID(accessIDResponse.getContent().getDtvAccountList().get(0).getAccountNumber());
request.setAccount(account);
String response = dtvnClients.callandGetDtvnStatus(request);
System.out.println("Response is--->"+response);
if (!Utility.isEmpty(response)) {
accountResponse = JqUtil.runJqQueryAndGetString(".content.accountResponse", response,
AccountResponse.class);
if (!Utility.isEmpty(accountResponse) && accountResponse.isSubscribable()
&& !Utility.isEmpty(accountResponse.getAccountStatus())
&& accountResponse.getAccountStatus().equalsIgnoreCase("FREEVIEW")) {
return accountResponse;
}
}
return accountResponse;
}
Test Class
#Test(expected = ServiceException.class)
public void test_searchAccessID_3_sample() throws Exception {
AccessIDSearchRequest request = new AccessIDSearchRequest();
CommonData commonData = new CommonData();
commonData.setAppName("IDSE");
commonData.setLoginId("qay_slid_sr1281");
request.setCommonData(commonData);
request.setSearchtype("accountId");
request.setSearchvalue("qay_slid_sr1281");
request.setMode("abc");
SearchAccessIdContent content = new SearchAccessIdContent();
AccountResponse accountResponse = new AccountResponse();
accountResponse.setAccountStatus("Sucess");
accountResponse.setSubscribable(true);
Mockito.when(helper.getAccountStatus(accessIDResponse)).thenReturn(accountResponse);
Mockito.when(service.checkAccountStatus(request)).thenReturn(accountResponse);
service.searchAccessID(header, request);
}

Your mocks are not properly configured.
When you call
service.searchAccessID(header, request);
it was make the underlying call
checkAccountStatus(request);
(which is correctly mocked and returns accountResponse), but this one does instanciate its result object, so your first mock will never be triggered.
Updating your first mock to something more permissive will probably fix your problem
Mockito.when(helper.getAccountStatus(any(AccessIDSearchResponse.class))).thenReturn(accountResponse);
To be honest, your code is hardly testable because you instanciate too many objects everywhere. Going for mocks here will be a pain in the future when you refactor something. If I were you I would rewrite this piece of code using a TDD approach and favorizing more testable patterns.

Java Mail Listner : This email server does not support RECENT or USER flags

This is a continuation of Java mail listener using Spring Integration : mail isn't received by multiple app instances . I'm using below ImapMailReceiver code :
#Bean
public ImapMailReceiver receiver() {
ImapMailReceiver receiver = new ImapMailReceiver(
"imaps://username:pwd#mail.company.com/INBOX");
receiver.setShouldMarkMessagesAsRead(false);
receiver.setSimpleContent(true);
receiver.setUserFlag("test-flag");
//receiver.setJavaMailProperties(javaMailProperties());
return receiver;
}
My application has been deployed in dev and stage servers.As per the debug logs : This email server does not support RECENT or USER flags. Hence whatever userflag i'm setting via above code isn't useful and mails will be received by only once instance of my application (either dev or stage ) and not all instances.So mails are getting dropped by one instance. How to make it work so that all of my application instances receives new emails? Should i set any javamail properties ? How to make it work
UPDATE used below custom searchTermStrategy . For every poll list of new messages + set of old messages will be received . Haven't tested on multiple application instances yet.
private class CustomSearchTermStrategy implements SearchTermStrategy {
CustomSearchTermStrategy() {
}
#Override
public SearchTerm generateSearchTerm(Flags supportedFlags, Folder folder) {
SearchTerm searchTerm = null;
boolean recentFlagSupported = false;
if (supportedFlags != null) {
recentFlagSupported = supportedFlags.contains(Flags.Flag.RECENT);
if (recentFlagSupported) {
searchTerm = new FlagTerm(new Flags(Flags.Flag.RECENT), true);
}
if (supportedFlags.contains(Flags.Flag.ANSWERED)) {
NotTerm notAnswered = new NotTerm(new FlagTerm(new Flags(Flags.Flag.ANSWERED), true));
if (searchTerm == null) {
searchTerm = notAnswered;
} else {
searchTerm = new AndTerm(searchTerm, notAnswered);
}
}
if (supportedFlags.contains(Flags.Flag.DELETED)) {
NotTerm notDeleted = new NotTerm(new FlagTerm(new Flags(Flags.Flag.DELETED), true));
if (searchTerm == null) {
searchTerm = notDeleted;
} else {
searchTerm = new AndTerm(searchTerm, notDeleted);
}
}
if (supportedFlags.contains(Flags.Flag.SEEN)) {
NotTerm notSeen = new NotTerm(new FlagTerm(new Flags(Flags.Flag.SEEN), true));
if (searchTerm == null) {
searchTerm = notSeen;
} else {
searchTerm = new AndTerm(searchTerm, notSeen);
}
}
}
// if (!recentFlagSupported) {
// searchTerm = applyTermsWhenNoRecentFlag(folder, searchTerm);
// }
return searchTerm;
}
}

The simplest solution would be to use different accounts for each environment (forward mails from one to the other so both get them).
If that's not possible, the issue is with the FLAGGED flag, which is unconditionally set and excluded in the default search term.
Unfortunately, the method that sets that flag is private so you can't change that behavior.
I think the only solution is a custom search strategy that does not include NOT (FLAGGED) and keep state locally to ignore messages that you have already read.

Update model - Play 2.4.3

I have the following code in my update function.
I use the form that I pre-fill with data but when I submit the form i CANNOT update the existing object even if I set client.id manually.
Is it correct to use the commented code in order to first get the object from DB and then update every field one by one?
Form<Client> clientForm = form(Client.class).bindFromRequest();
Map<String, String> data = clientForm.data();
if (clientForm.hasErrors()) {
return badRequest(addEditClient.render("Edit Client", "Update Client", clientID, false, clientForm));
} else {
// do stuff
Client client = clientForm.get();
client.contact = User.findByID("1");
for(ClientTask ct : client.taskSet) {
Task t = Task.findByID(ct.t.id);
ct.t = t;
}
client.id = clientID;
//Client c = Client.findByID(clientID);
//c.name = "test12";
//etc...
//c.save();
client.save();
return GO_HOME;
}

Send MMS from My application in android

I want to send MMS from my application to a specific number. I've searched and found this code but I have no idea if this code what I need or not.
My Questions is :
-can anyone explain this code to me.i am beginner in MMS.
-also, i thought this code is let the user send MMS from my application without move it to the native Messaging inbox (and this is what i want) Am i right?
-also i have a problem ,i do not know how can i put this code in my project.
this is what i found
MMS is just a http-post request. You should perform the request using extra network feature :
final ConnectivityManager connMgr = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
final int result = connMgr.startUsingNetworkFeature( ConnectivityManager.TYPE_MOBILE, Phone.FEATURE_ENABLE_MMS);
If you get back the result with Phone.APN_REQUEST_STARTED value, you have to wait for proper state. Register BroadCastReciver and wait until Phone.APN_ALREADY_ACTIVE appears:
final IntentFilter filter = new IntentFilter();
filter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
context.registerReceiver(reciver, filter);
If background connection is ready, then build content and perform request. If you want to do that using android's internal code, please use this:
final SendReq sendRequest = new SendReq();
final EncodedStringValue[] sub = EncodedStringValue.extract(subject);
if (sub != null && sub.length > 0) {
sendRequest.setSubject(sub[0]);
}
final EncodedStringValue[] phoneNumbers = EncodedStringValue.extract(recipient);
if (phoneNumbers != null && phoneNumbers.length > 0) {
sendRequest.addTo(phoneNumbers[0]);
}
final PduBody pduBody = new PduBody();
if (parts != null) {
for (MMSPart part : parts) {
final PduPart partPdu = new PduPart();
partPdu.setName(part.Name.getBytes());
partPdu.setContentType(part.MimeType.getBytes());
partPdu.setData(part.Data);
pduBody.addPart(partPdu);
}
}
sendRequest.setBody(pduBody);
final PduComposer composer = new PduComposer(this.context, sendRequest);
final byte[] bytesToSend = composer.make();
HttpUtils.httpConnection(context, 4444L, MMSCenterUrl, bytesToSendFromPDU, HttpUtils.HTTP_POST_METHOD, !TextUtils.isEmpty(MMSProxy), MMSProxy, port);
MMSCenterUrl: url from MMS-APNs,
MMSProxy: proxy from MMS-APNs,
port: port from MMS-APNs
Note that some classes are from internal packages. Download from android git is required.
The request should be done with url from user's apn-space code:
public class APNHelper {
public class APN {
public String MMSCenterUrl = "";
public String MMSPort = "";
public String MMSProxy = "";
}
public APNHelper(final Context context) {
this.context = context;
}
public List<APN> getMMSApns() {
final Cursor apnCursor = this.context.getContentResolver().query(Uri.withAppendedPath(Telephony.Carriers.CONTENT_URI, "current"), null, null, null, null);
if ( apnCursor == null ) {
return Collections.EMPTY_LIST;
} else {
final List<APN> results = new ArrayList<APN>();
while ( apnCursor.moveToNext() ) {
final String type = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.TYPE));
if ( !TextUtils.isEmpty(type) && ( type.equalsIgnoreCase(Phone.APN_TYPE_ALL) || type.equalsIgnoreCase(Phone.APN_TYPE_MMS) ) ) {
final String mmsc = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.MMSC));
final String mmsProxy = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.MMSPROXY));
final String port = apnCursor.getString(apnCursor.getColumnIndex(Telephony.Carriers.MMSPORT));
final APN apn = new APN();
apn.MMSCenterUrl = mmsc;
apn.MMSProxy = mmsProxy;
apn.MMSPort = port;
results.add(apn);
}
}
apnCursor.close();
return results;
}
Please help me

why don't you use the android system functions:
Please have a look on
https://developer.android.com/guide/components/intents-common.html
public void composeMmsMessage(String message, Uri attachment) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setData(Uri.parse("smsto:")); // This ensures only SMS apps respond
intent.putExtra("sms_body", message);
intent.putExtra(Intent.EXTRA_STREAM, attachment);
if (intent.resolveActivity(getPackageManager()) != null) {
startActivity(intent); }
}
Cheers
Tom

I found a link in an other thread to a github project that works 100% https://github.com/klinker41/android-smsmms
Notice, that obligatory settings are only
Settings sendSettings = new Settings();
sendSettings.setMmsc(mmsc);
sendSettings.setProxy(proxy);
sendSettings.setPort(port);
you can get them something like (found at Set APN programmatically on Android - answear by vincent091):
Cursor cursor = null;
if (Utils.hasICS()){
cursor =SqliteWrapper.query(activity, activity.getContentResolver(),
Uri.withAppendedPath(Carriers.CONTENT_URI, "current"), APN_PROJECTION, null, null, null);
} else {
cursor = activity.getContentResolver().query(Uri.withAppendedPath(Telephony.Carriers.CONTENT_URI, "current"),
null, null, null, null);
}
cursor.moveToLast();
String type = cursor.getString(cursor.getColumnIndex(Telephony.Carriers.TYPE));
String mmsc = cursor.getString(cursor.getColumnIndex(Telephony.Carriers.MMSC));
String proxy = cursor.getString(cursor.getColumnIndex(Telephony.Carriers.MMSPROXY));
String port = cursor.getString(cursor.getColumnIndex(Telephony.Carriers.MMSPORT));