Not supported for DML operations .Unable to update data in postgresql database using spring data - spring

Question

Hi I am using spring boot and Spring data i want to fetch data from database on the basis of id but m not able to retreive it.
M getting this error "exception":
"org.springframework.dao.InvalidDataAccessApiUsageException",
"message": "org.hibernate.hql.internal.QueryExecutionRequestException:
Not supported for DML operations [Update
com.ge.health.poc.model.SpringModel SET name='sneha' where id=?];
nested exception is java.lang.IllegalStateException:
org.hibernate.hql.internal.QueryExecutionRequestException: Not
supported for DML operations [Update
com.ge.health.poc.model.SpringModel SET name='sneha' where id=?]",
"path": "/updatedata"
}
Main Class
package com.ge.health.poc;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
#SpringBootApplication
public class SpringDataApplication {
public static void main(String[] args) {
SpringApplication.run(SpringDataApplication.class, args);
}
}
Controller Class
package com.ge.health.poc.controller;
import java.io.IOException;
import java.text.ParseException;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.ge.health.poc.model.SpringModel;
import com.ge.health.poc.service.BookServiceImpl;
#RestController
public class SpringController {
#Autowired
BookServiceImpl bookserviceimpl;
#RequestMapping(value = "/insertdata", method = RequestMethod.POST)
#ResponseBody
public void helloService(#RequestBody String input, final RedirectAttributes redirectAttributes)
throws JsonParseException, JsonMappingException, IOException, ParseException {
System.out.println(input);
ObjectMapper mapper = new ObjectMapper();
SpringModel pojodata = mapper.readValue(input, SpringModel.class);
System.out.println(pojodata);
System.out.println(pojodata.getAuthor());
bookserviceimpl.save(pojodata);
}
#RequestMapping(value = "/getdata/{id}")
#ResponseBody
public void retreiveData(#PathVariable("id") int id)
throws JsonParseException, JsonMappingException, IOException, ParseException {
System.out.println("id is:" + id);
bookserviceimpl.retreive(id);
}
#RequestMapping(value = "/deletedata", method = RequestMethod.DELETE)
#ResponseBody
public void deleteData(#RequestBody String id)
throws JsonParseException, JsonMappingException, IOException, ParseException {
System.out.println("M in delete");
System.out.println(id);
ObjectMapper mapper = new ObjectMapper();
SpringModel pojodata = mapper.readValue(id, SpringModel.class);
int idd = (pojodata.getId());
System.out.println("value oof idd is:" + idd);
System.out.println("M into delete method");
bookserviceimpl.delete(idd);
}
#RequestMapping(value = "/updatedata", method = RequestMethod.PUT)
#ResponseBody
public void updateData(#RequestBody String id)
throws JsonParseException, JsonMappingException, IOException, ParseException {
System.out.println("M in update");
System.out.println(id);
ObjectMapper mapper = new ObjectMapper();
SpringModel pojodata = mapper.readValue(id, SpringModel.class);
int idd = (pojodata.getId());
System.out.println("value oof idd is:" + idd);
bookserviceimpl.update(idd);
}
}
Repository
package com.ge.health.poc.interfac;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import com.ge.health.poc.model.SpringModel;
#Repository
#Transactional
public interface BookRepository extends JpaRepository<SpringModel, Long> {
#Query("select author from SpringModel where id=?")
String findName(int id);
#Query("Update SpringModel SET name='sneha' where id=?")
String UpdateByID(int id);
#Query("delete from SpringModel where id=?")
String deleteById(int id);
}
BookServiceImpl.java
package com.ge.health.poc.service;
import javax.persistence.EntityManager;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import com.ge.health.poc.interfac.BookRepository;
import com.ge.health.poc.model.SpringModel;
#Component
public class BookServiceImpl implements BookService {
#Autowired
EntityManager entitymanager;
#Autowired
BookRepository bookrepo;
#Override
public void save(SpringModel bookdata) {
bookrepo.save(bookdata);
}
public String retreive(int id) {
String s = bookrepo.findName(id);
System.out.println("Author name is:" + s);
return null;
}
public void delete(int id) {
System.out.println("M into service delete method");
bookrepo.deleteById(id);
}
public void update(int id) {
System.out.println("M in service update");
bookrepo.UpdateByID(id);
}
}
this is model class
package com.ge.health.poc.model;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name = "spring_model")
public class SpringModel {
#Id
private Long id;
#Column
private String name;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
#Column
private String isbn;
#Override
public String toString() {
return "SpringModel [id=" + id + ", name=" + name + ", isbn=" + isbn + ", author=" + author + ", pages=" + pages
+ "]";
}
#Column
private String author;
#Column
private String pages;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getIsbn() {
return isbn;
}
public void setIsbn(String isbn) {
this.isbn = isbn;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getPages() {
return pages;
}
public void setPages(String pages) {
this.pages = pages;
}
}

Answer 1

Try the annotation #Modifying(org.springframework.data.jpa.repository.Modifying) on the repository methods and #Transactional(org.springframework.transaction.annotation.Transactional) in service implementation which does DML operation. please refer this answer for more information.

Answer 2

By Default spring jpa will think query is select query.So, To make sure the query is updating the existed row for a particular entity
add #modifying Annotation on the method which is updating the existed row
This might works for you