I am getting ClassCastException while getting the value from the Model.Please find the exception details below:
Caused by: java.lang.ClassCastException: java.util.Date cannot be cast to java.lang.String
at com.csscorp.presentation.spinneret.client.ams.AttendanceCaseCreationModel.getCheckinDate (AttendanceCaseCreationModel.java:164)
at com.csscorp.presentation.spinneret.client.ams.AttendanceCaseCreationGridEditor$8.handleEvent (AttendanceCaseCreationGridEditor.java:916)
Below is my code:
ColumnConfig checkinDatecolumn = new ColumnConfig();
checkinDatecolumn.setId("checkinDate");
checkinDatecolumn.setHeader("Check In Date");
checkinDatecolumn.setWidth(85);
checkinDatecolumn.setMenuDisabled(true);
checkinDatecolumn.setSortable(false);
final DateField dateField1 = new DateField();
dateField1.getPropertyEditor().setFormat(DateTimeFormat.getFormat("dd/MMM/yyyy"));
final String tempDate=dateField1.getRawValue();
dateField1.getDatePicker().addListener(Events.Select, new Listener<DatePickerEvent>() {
#Override
public void handleEvent(DatePickerEvent dpe) {
if(ACCCheckBoxModel.getSelectedItem().getRosterDate()!=null){
DateTimeFormat format = DateTimeFormat.getFormat("dd/MMM/yyyy");
rosterdate=format.parse(ACCCheckBoxModel.getSelectedItem().getRosterDate());
nextdate.setTime(rosterdate.getTime()+(1000*60*60*24));
prevdate.setTime(rosterdate.getTime()-(1000*60*60*24));
}
int rowIndex = caseStoreModule.indexOf(ACCCheckBoxModel.getSelectedItem());
Window.alert("Row Index-->"+rowIndex);
if(ACCCheckBoxModel.getSelectedItem().getCheckinDate().toString() == null){//here I am getting ClassCastException
if (rosterdate.compareTo(dateField1.getValue())==0 || nextdate.compareTo(dateField1.getValue())==0){
Window.alert("this is a valid date-->");
}
else {
Window.alert("Enter a valid date-->");
dateField1.reset();
}
}
else{
//Here I need to Implement validation logic if the value from the model is not null
}
}
});
In model class I am setting the checkinDate as String and DTO also I am setting it as String only. But Why ClassCastException is coming. I am not getting the cause for this.
Update
This is the line of AttendanceCaseCreationModel.java:164
163 public String getCheckinDate() {
164
return get("checkinDate");
165 }
Update
After calling toString method,ClassCastException is not coming.
return get("checkinDate").toString();
But When I check for null value,It's throwing the NullPointerException.
if(ACCCheckBoxModel.getSelectedItem().getCheckinDate() == null)
Exception details are below:
Caused by: java.lang.NullPointerException: null at com.csscorp.presentation.spinneret.client.ams.AttendanceCaseCreationModel.getCheckinDate(AttendanceCaseCreationModel.java:167) at com.csscorp.presentation.spinneret.client.ams.AttendanceCaseCreationGridEditor$8.handleEvent(AttendanceCaseCreationGridEditor.java:920)
Try the following:
public String getCheckinDate()
{
final Date date = (Date) get( "CheckinDate" );
return date == null ? null : date.toString();
}
Remove the toString() from getCheckinDate().toString().
I solved this.By below code change.
public String getCheckinDate() {
if(get("checkinDate")==null)
return null;
else
return get("checkinDate").toString();
}
Now it returns a String if it is not null.And null if it is null.
Related
I know that in Java a method can return only one return type... But if there is any possiblity to this, kindly let me know. From the below method I am trying to return a list if condition satisfies else i am trying to return an error message.
Here is my code:
#RequestMapping(value = "/getcompanies", method = RequestMethod.POST)
public List<CompanyMaster> getCompanies(#RequestBody UserDetails user) {
String OrgLoginId = user.getOrgLoginId();
String password = user.getuPassword();
String checkLoginId = null;
String uPassword = null;
String encPassword = null;
String loginId = null;
String checkAuthorized = null;
// String loginId=userService.getLoginId(OrgLoginId);
List<Object[]> CheckIdPassword = userService.checkLoginId(OrgLoginId);
List<Object[]> results = CheckIdPassword;
for (Object[] obj : results) {
checkLoginId = obj[0].toString();
if (null == obj[1]) {
uPassword = "";
} else {
uPassword = obj[1].toString();
}
loginId = obj[2].toString();
}
checkAuthorized = loginId.substring(0, 3);
if (null != password) {
MD5 md5 = new MD5();
encPassword = md5.getPassword(password);
}
if (checkLoginId == null) {
return "Incorrect loginId..Please enter valid loginId";
} else if (encPassword.equals(uPassword)) {
if (checkAuthorized.equals("STE")) {
List<CompanyMaster> companyList = userService.getCompanyList(OrgLoginId);
return companyList;
} else {
return "You are not Authorized";
}
} else {
return "Incorrect Password";
}
Yes its possible, create a custom Exception say 'MyAppException' and throw that exception with the error message you want.
Write your logic in a try{}catch block and throw the exception in catch so that the response has the error message
public List<CompanyMaster> getCompanies(#RequestBody UserDetails user) throws MyAppppException
{
try
{
//your logic which throws error
return companyList;
}
catch( final MyAppException we )
{
throw new MyAppException("User not found", HttpStatus.NOT_FOUND);
}
}
Refer this link
https://www.codejava.net/java-core/exception/how-to-create-custom-exceptions-in-java
You can achieve this by creating a new presenter Class which contains List and status of type String and change the return type of getCompanies method to presenter class like
public CompaniesPresenter getCompanies()
And your CompaniesPresenter class should look like
public class CompaniesPresenter {
private List<CompanyMaster> companyMaster;
private string status;
//default constructor
public CompaniesPresenter(){
}
//parameterized constructor to return only string in exception case
public CompaniesPresenter(Stirng status){
this.status = status;
}
//parametirized constructor to return success case
public CompaniesPresenter(List<CompanyMaster> companyMaster, Stirng status){
this.companyMaster = companyMaster;
this.status = status;
}
//getters and setters
}
This is how your updated method lokks like
#RequestMapping(value = "/getcompanies", method = RequestMethod.POST)
public CompaniesPresenter getCompanies(#RequestBody UserDetails user) {
String OrgLoginId = user.getOrgLoginId();
String password = user.getuPassword();
String checkLoginId = null;
String uPassword = null;
String encPassword = null;
String loginId = null;
String checkAuthorized = null;
// String loginId=userService.getLoginId(OrgLoginId);
List<Object[]> CheckIdPassword = userService.checkLoginId(OrgLoginId);
List<Object[]> results = CheckIdPassword;
for (Object[] obj : results) {
checkLoginId = obj[0].toString();
if (null == obj[1]) {
uPassword = "";
} else {
uPassword = obj[1].toString();
}
loginId = obj[2].toString();
}
checkAuthorized = loginId.substring(0, 3);
if (null != password) {
MD5 md5 = new MD5();
encPassword = md5.getPassword(password);
}
if (checkLoginId == null) {
return new CompaniesPresenter("Incorrect loginId..Please enter valid loginId");
} else if (encPassword.equals(uPassword)) {
if (checkAuthorized.equals("STE")) {
List<CompanyMaster> companyList = userService.getCompanyList(OrgLoginId);
return new CompaniesPresenter(companyList,"success");
} else {
return new CompaniesPresenter("You are not Authorized");
}
} else {
return new CompaniesPresenter("Incorrect Password");
}
This is not tested please make sure for any compilation errors
vavr's Either class would be a good choice.
The usage of custom exception is most reasonable solution. However, creating custom exception for just one case is not ideal always.
Another solution is to return empty List from your method, check if the List is empty in your servlet (or wherever you are invoking this method from), and show error message there.
It seems like you want to return multiple error messages for different cases. In this case, custom exception is recommended solution. If you don't like custom exceptions, you can return List<Object> and populate error message as the first element in the list. In the place where this List is obtained, check if the first element is instanceOf String or CompanyMaster. Based on what it is, you can perform your operations. This is a weird but possible solution (only if you don't like custom exceptions).
You need to understand the problem first. You are mixing two things here, first authorization, does the user has correct privileges to get company details, second giving the company details itself. Let's understand the first problem when a user tries to access "/getcompanies" endpoint will you let him in if does not have access, in REST world your security model should take care of it. I would use spring security to achieve this. My recommendation would be to explore on "interceptor" and solve the problem of invalid user. This will make your other problem easy as your "/getcompanies" endpoint can focus only on getting the details and return it (SRP).
I am using grails 2.4.2. I have a domain as JointMemberInvestment where I have an instance of JointMember class. But when I want to save the data it gives me the following error:
Could not find matching constructor for: somiti.JointMember(java.lang.String).
Here are my attempts below.
My domain class:
class JointMemberInvestment {
JointMember jointMember
int investAmount
Date investDate
static mapping = {
table('joint_member_investment')
version defaultValue: 0
}
static constraints = {
investAmount(nullable: false, blank: false)
investDate(nullable: false, blank: false)
}
}
My controller save method:
#Transactional
def save(JointMemberInvestment jointMemberInvestmentInstance) {
if (jointMemberInvestmentInstance == null) {
notFound()
return
}
String investDate = params.investDate;
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
Date date = sdf.parse(investDate);
java.sql.Date sqlInvestDate = new java.sql.Date(date.getTime());
jointMemberInvestmentInstance.investDate = sqlInvestDate
jointMemberInvestmentInstance.jointMember = JointMember.get(Long.parseLong(params.jointMemberId))
if (jointMemberInvestmentInstance.hasErrors()) {
respond jointMemberInvestmentInstance.errors, view: 'create'
return
}
jointMemberInvestmentInstance.save flush: true
request.withFormat {
form multipartForm {
flash.message = message(code: 'default.created.message', args: [message(code: 'jointMemberInvestment.label', default: 'JointMemberInvestment'), jointMemberInvestmentInstance.id])
redirect jointMemberInvestmentInstance
}
'*' { respond jointMemberInvestmentInstance, [status: CREATED] }
}
}
jointMemberInvestmentInstance.investDate = sqlInvestDate
jointMemberInvestmentInstance.jointMember = JointMember.get(Long.parseLong(params.jointMemberId))
bindData(jointMemberInvestmentInstance, params, [exclude:['JointMember']])
if (jointMemberInvestmentInstance.hasErrors()) {
respond jointMemberInvestmentInstance.errors, view: 'create'
return
}
May be this will help you.
In my REST API Controller with #PathVariable("timestamp) I have to validate that timestamp format is complaint with ISO 8601 standard: eg. 2016-12-02T18:25:43.511Z.
#RequestMapping("/v3/testMe/{timestamp}")
public class TestController {
private static final String HARDCODED_TEST_VALUE = "{\n\t\"X\": \"01\",\n\t\"Y\": \"0.2\"\n}";
#ApiOperation(nickname = "getTestMe", value = "Return TestMe value", httpMethod = "GET",
authorizations = {#Authorization(value = OAUTH2,
scopes = {#AuthorizationScope(scope = DEFAULT_SCOPE, description = SCOPE_DESCRIPTION)})})
#RequestMapping(method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
#ResponseBody
public String getTestMe(#PathVariable("timestamp") String timestamp) {
if (timestamp != null) {
return HARDCODED_TEST_VALUE;
}
throw new ResourceNotFoundException("wrong timestamp format");
}
}
The way of how I would like to achieve it is similiar to above if-else statement that check whether timestamp is null or not - so analogically I would like to add similiar if-else to validate format of timestamp and return body if so or 404 error code if it's not.
Any idea what I could use to do that and please give me ready example ? I've tried simple validation with regex but is not convenient and unfortunately didn't work anyway ...
You can use Java 8's DateTimeFormatter and make sure it parses the string without throwing an exception. Here's a method that that returns true if the input string is a valid ISO date:
boolean isValidIsoDateTime(String date) {
try {
DateTimeFormatter.ISO_DATE_TIME.parse(date);
return true;
} catch (DateTimeParseException e) {
return false;
}
}
To return the hardcoded test value in response body, you should use the method like this:
public String getTestMe(#PathVariable("timestamp") String timestamp) {
if (timestamp != null && isValidIsoDateTime(timestamp)) {
return HARDCODED_TEST_VALUE;
}
throw new ResourceNotFoundException("wrong timestamp format");
}
public class MyClass {
public static void main(String args[]) {
System.out.println("-------------OK--------------");
String inputTimeString = "makara_kann";
if (!inputTimeString.matches("^([0-9]|0[0-9]|1[0-9]|2[0-3]):[0-5][0-9]$")){
System.out.println("Invalid time string: " + inputTimeString);
} else {
System.out.println("valid time string: " + inputTimeString);
}
}
}
-------------OK--------------
Invalid time string: makara_kann
So I'm using retrofit to execute my API calls, and I have this endpoint which is returning error (which is the desired response), when I try to use my converter to turn the response.errorBody() into my java object Error, it returns the new Error object but its fields are null.
Here's my Error object class:
public class Error {
private final String message;
private final Object objectError;
public Error(String message, Object objectError) {
this.message = message;
this.objectError = objectError;
}
public String getMessage() {
return message;
}
public Object getObjectError() {
return objectError;
}
}
Here's my converter method:
public static Error parseError(Response<?> response) {
Converter<ResponseBody, Error> converter = ApiClient.retrofit().responseBodyConverter(Error.class, new Annotation[0]);
Error error;
try {
error = converter.convert(response.errorBody());
} catch (IOException e) {
return new Error("Connection Error", null);
}
return error;
}
And my JSON response looks alright:
{"status":"error",
"error":{"message":"# is an invalid character",
"objectError":"# is an invalid character"}}
Can you please help me find out what's happening?
Massive thanks!
I finally solved it by creating another class that has the status field and the error field, and used that one in the converter, the error field in that class is the one above.
I have problem with cloning entity in my application created with play framework 2.1.
When I'm runing method below I get RollbackException: Error while committing the transaction.
My question is: What is a proper way to clone entity using jpa in playframework?
#play.db.jpa.Transactional
public static Result edit(final Long id) {
final Client client = Client.findById(id);
if (client == null) {
return notFound(String.format("Client %s does not exist.", id));
}
if(client.address.id == client.corrAddress.id){
client.corrAddress = client.address.clone();
}
Form<Client> filledForm = CLIENT_FORM.fill(client);
return ok(form.render(filledForm, "Edycja danych klienta"));
}
Address clone method:
public Address clone(){
return new Address(this.street, this.postCode, this.city);
}
UPDATE:
I made some changes in code. I don't use method clone now, as #Christopher Hunt suggested.
I also got another error.
I made method cascade in Client class:
public void cascade(){
if(address.equals(corrAddress)){
if(address.id != null && corrAddress.id != null
&& address.id.equals(corrAddress.id)){
address.client = this;
address.corrClient = this;
address.saveOrUpdate();
corrAddress = null;
} else {
address.client = this;
address.corrClient = this;
address.saveOrUpdate();
corrAddress = null;
}
} else {
if(address.id != null && corrAddress.id != null
&& address.id.equals(corrAddress.id)){
System.out.println("TEST");
address.client = this;
address.corrClient = null;
address.saveOrUpdate();
String street = this.corrAddress.street;
String postCode = this.corrAddress.postCode;
String city = this.corrAddress.city;
corrAddress = null;
/** CODE BELOW CAUSES ERROR: **/
corrAddress = new Address(street, postCode, city);
corrAddress.client = null;
corrAddress.corrClient = this;
corrAddress.saveOrUpdate();
/** CODE ABOVE CAUSES ERROR: **/
} else {
address.client = this;
address.saveOrUpdate();
corrAddress.corrClient = this;
corrAddress.saveOrUpdate();
}
}
}
definition of address references in Client class:
#Valid
#OneToOne(mappedBy="client", orphanRemoval=true, fetch = FetchType.EAGER)
public Address address;
#Valid
#OneToOne(mappedBy="corrClient", orphanRemoval=true, fetch = FetchType.EAGER)
public Address corrAddress;
Now I'm getting error:
play.api.Application$$anon$1: Execution
exception[[PersistenceException: org.hibernate.HibernateException:
More than one row with the given identifier was found: 2, for class:
models.Address]] at
play.api.Application$class.handleError(Application.scala:289)
~[play_2.10.jar:2.1.0] at
play.api.DefaultApplication.handleError(Application.scala:383)
[play_2.10.jar:2.1.0] at
play.core.server.netty.PlayDefaultUpstreamHandler$$anon$2$$anonfun$handle$1.apply(PlayDefaultUpstreamHandler.scala:132)
[play_2.10.jar:2.1.0] at
play.core.server.netty.PlayDefaultUpstreamHandler$$anon$2$$anonfun$handle$1.apply(PlayDefaultUpstreamHandler.scala:128)
[play_2.10.jar:2.1.0] at
play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113)
[play_2.10.jar:2.1.0] at
play.api.libs.concurrent.PlayPromise$$anonfun$extend1$1.apply(Promise.scala:113)
[play_2.10.jar:2.1.0] javax.persistence.PersistenceException:
org.hibernate.HibernateException: More than one row with the given
identifier was found: 2, for class: models.Address at
org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1360)
~[hibernate-entitymanager-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1288)
~[hibernate-entitymanager-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1294)
~[hibernate-entitymanager-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.ejb.AbstractEntityManagerImpl.merge(AbstractEntityManagerImpl.java:877)
~[hibernate-entitymanager-4.1.1.Final.jar:4.1.1.Final] at
models.clients.Client.update(Client.java:58) ~[na:na] at
models.clients.Client.saveOrUpdate(Client.java:110) ~[na:na] Caused
by: org.hibernate.HibernateException: More than one row with the given
identifier was found: 2, for class: models.Address at
org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:104)
~[hibernate-core-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.loader.entity.EntityLoader.loadByUniqueKey(EntityLoader.java:161)
~[hibernate-core-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.persister.entity.AbstractEntityPersister.loadByUniqueKey(AbstractEntityPersister.java:2209)
~[hibernate-core-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.type.EntityType.loadByUniqueKey(EntityType.java:661)
~[hibernate-core-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.type.EntityType.resolve(EntityType.java:441)
~[hibernate-core-4.1.1.Final.jar:4.1.1.Final] at
org.hibernate.type.EntityType.replace(EntityType.java:298)
~[hibernate-core-4.1.1.Final.jar:4.1.1.Final]
Important is that I don't want to operate with 2 element list. I want 2 fileds (address, corrAddress) in my Client class.