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(2025-03-11)

Мини задача: сделать класс иммутабельным

class Person{
String name;
HashMapaddresses;
}

Провести кодревью:

package com.example.demo.model;

import lombok.Data;

import javax.persistence.Entity;
import javax.persistence.Id;

Account.
@author Author

@Data
@Entity
public class Account {
   @Id
   private Long id;
   private String accountNumber;
   private String bic;
   private Double amount;
}

package com.example.demo.repository;

import com.example.demo.model.Account;
import org.springframework.data.jpa.repository.JpaRepository;

import java.util.List;

/
* AccountRepository.
* @author Author
*/
public interface AccountRepository extends JpaRepository {

   List findByAccountNumber(String accountNumber);
}

package com.example.demo.service;

import com.example.demo.model.Account;
import com.example.demo.repository.AccountRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/
* BalanceService.
* @author Author
*/
@Service
public class BalanceService {
@Autowired
AccountRepository accountRepository;

public Account change(Long id, Double diff) {
   Account account = accountRepository.getOne(id);
   account.setAmount(account.getAmount() + diff);
   return accountRepository.save(account);
}

package com.example.demo.resource;

import com.example.demo.model.Account;
import com.example.demo.repository.AccountRepository;
import com.example.demo.service.BalanceService;
import lombok.RequiredArgsConstructor;
import org.springframework.http.MediaType;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

/**
* AccountResource.
* @author Author
*/
@RestController
@RequiredArgsConstructor
public class AccountResource {

   private final AccountRepository accountRepository;
   private final BalanceService balanceService;
   
   @GetMapping(value = "/accounts/add", 
           produces = MediaType.APPLICATIONJSONVALUE)
   Account add(Account account) {
       return accountRepository.save(account);
   }
   
   @GetMapping(value = "/accounts/{accountNumber}", 
           produces = MediaType.APPLICATIONJSONVALUE)
   List findByAccountNumber(@PathVariable("accountNumber") 
           String accountNumber) {
       return accountRepository.findByAccountNumber(accountNumber);
   }
   
   @PutMapping(value = "/accounts/{id}/change", 
           produces = MediaType.APPLICATIONJSONVALUE)
   Account changeBalance(@PathVariable("id") Long id, 
           @RequestParam("diff") Double diff) {
       return balanceService.change(id, diff);
   }
}
<databaseChangeLog
xmlns="http://www.liquibase.org/xml/ns/dbchangelog"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.5.xsd">

<changeSet id="account" author="Author">
<preConditions onFail="MARK_RAN">
<not>
<tableExists tableName="account"/>
</not>
</preConditions>

<createTable tableName="account" remarks="Счета">
<column name="id" type="bigint" 
remarks="Идентификатор записи">
<constraints primaryKey="true"
primaryKeyName="account_pk"
nullable="false"/>
</column>
<column name="account_number" type="varchar(50)"/>
<column name="bic" type="varchar(9)"/>
<column name="amount" type="numeric(17,2)"/>
</createTable>
</changeSet>
</databaseChangeLog>
xsi:schemaLocation="http://www.liquibase.org/xml/ns/dbchangelog
http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.1.xsd">