Forem: Suhana

In IntelliJ remove those classes which have 0 uses

Suhana — Sun, 10 Mar 2024 13:51:10 +0000

In my project, I have too many classes which are not in usage at present. so I have to remove those classes with 0 usages(class should not be used in another class or any declaration). Do I have any shortcut to do as my project has 300+ classes

DataSource issue in spring Batch 5 - mongodb

Suhana — Mon, 04 Dec 2023 15:51:42 +0000

Hey, I am trying to implement spring batch 5 with mongodb

SodRepository sodRepository;

@Bean
public ItemReader<Sod> csvFileReader() {
  FlatFileItemReader<Sod> reader = new FlatFileItemReader<>();
  reader.setResource(new ClassPathResource(file)); // Specify your CSV file
  reader.setLineMapper(new DefaultLineMapper<Sod>() {{
    setLineTokenizer(new DelimitedLineTokenizer() {{
      setNames(new String[]{"groupCode","original", "conflictsWith", "level", "relationship", "validFrom", "validTo"});
    }});
    setFieldSetMapper(new BeanWrapperFieldSetMapper<Sod>() {{
      setTargetType(Sod.class);
    }});
  }});
  return reader;
}


@Bean
public ItemWriter<Sod> mongoItemWriter() {
  return items -> sodRepository.saveAll(items);
}

@Bean
public Job job(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
  return new JobBuilder("myJob",jobRepository)
          .start(step1(jobRepository,transactionManager))
          .build();
}

@Bean
public Step step1(JobRepository jobRepository, PlatformTransactionManager transactionManager) {
  return new StepBuilder("myStep",jobRepository)
          .<Sod, Sod>chunk(100)
          .reader(csvFileReader())
          .writer(mongoItemWriter())
          .transactionManager(transactionManager)
          .build();
}

and mongo config:
@Configuration
@EnableConfigurationProperties
@EnableMongoRepositories(
        basePackages = {"com.airtel.africa.ums.client.config"},
        mongoTemplateRef = "mongoTemplate"
)
@EnableTransactionManagement
public class MongoConfig extends AbstractMongoClientConfiguration{

    @Value("${spring.data.mongodb.database}")
    private String databaseName;

    @Value("${spring.data.mongodb.uri}")
    private String mongoUrl;

    @Bean
    MongoTransactionManager transactionManager(MongoDatabaseFactory dbFactory) {
        return new MongoTransactionManager(dbFactory);
    }

    @Override
    protected String getDatabaseName() {
        return databaseName;
    }

    @Override
    public MongoClient mongoClient() {
        final ConnectionString connectionString = new ConnectionString(mongoUrl);
        final MongoClientSettings mongoClientSettings = MongoClientSettings.builder()
                .applyConnectionString(connectionString).build();
        return MongoClients.create(mongoClientSettings);

    }

    @Bean(name = "mongoTemplate")
    public MongoTemplate mongoTemplate(MongoDatabaseFactory mongoDatabaseFactory) {
        return new MongoTemplate(mongoDatabaseFactory);
    }

}

am getting error - Parameter 0 of method csvProcessingStep in com.airtel.africa.ums.client.excel.ExcelUploadConfig required a bean named 'dataSource' that could not be found.

Password encryption while login

Suhana — Wed, 11 Oct 2023 17:45:29 +0000

We have a centralized application where the are some clients to it where their data will be stored in our application db. Now, I have to encrypt the password while logging in to avoid security issues. But our clients also need to send their password-encrypted and I can't share static secret key with them through which they can encrypt. Any better suggestions are appreciated.

HOW TO DO Password encryption while login?

Suhana — Wed, 11 Oct 2023 17:45:26 +0000

How to decide to have one endpoint or different?

Suhana — Sun, 17 Sep 2023 11:05:33 +0000

Actually, i have an endpoint which takes Jwt token and returns user from the token(decrypting). Now i have to write other endpoint which gives user details but in request i also get identity source(thirdparty soruce) and id. so in this case i will get details from third-party source if i get request like this.the Response details data will not same in both the cases. Now, i couldn't decide if i need to have different endpoints or not??

How to set the header's Accept-Language with locale value

Suhana — Sat, 15 Oct 2022 13:35:28 +0000

I have a request header Accept-Language which can have "en" or "fr" locale. Now one application sends a header where header key will be locale. So, to be in the same pace i should set their locale value to Accept-Language. I cannot do it commonly in localeResolver method. It should be for partucular api so i need to do this in controller. How to achieve this?
Thanks in advance

How to find latest document for all ids in the list of ids?

Suhana — Sun, 09 Oct 2022 17:27:04 +0000

I have a database Book(id, author, createdAt, updatedAt) in mongodb. Now, I have list of authors and want to find their latest book of every author in the list.
Can anyone help me resolve this? Thanks in advance

how to validate email with special characters |, :, &?

Suhana — Thu, 29 Sep 2022 18:41:07 +0000

I have a regex ^\\w+([\\.-]?\\w+)*@\\w+([\\.-]?\\w+)*(\\.\\w{2,3})+$. Now i want to allow all special characters(|,&,:) in it with out changing whole regex

thanks in advance

What is a regex for a email?

Suhana — Sun, 25 Sep 2022 10:14:55 +0000

My email can also contain special characters including @,&,-,_,:,(),|
I have wrote



But it doesn't seem efficient. Any suggestions?

What is an XSS Filter?

Suhana — Sun, 25 Sep 2022 08:28:20 +0000

I have a requirement to make an email field supporting all special characters. But while I am giving tes(t)@test.com in email, I am getting "XSSFilter error found" and when I skip the XSS filter for this particular URL it works fine. But what actually XSS filter do?