JSP, show results from two tables in for each - spring

Question

In JSP I have simple foreach, which should display the information from two tables. First table "Organizations" as "country" parameter keeps id of country as a foreign key to another table "Countries".
How can I show country name in this foreach, which keeps in “Organizations" as id of country?
<c:forEach items=“${organizations}" var=“organization">
<c:url var="edit" value="/edit/${organization.id}" />
<c:url var="remove" value="/remove/${organization.id}" />
<tr>
<td><c:out value="${organization.name}" /></td>
<td><c:out value="${organization.country}" /></td> // In this line
<td><c:out value="${organization.address}" /></td>
<td><c:out value="${organization.phone}" /></td>
<td><c:out value="${organization.market_cap}" /></td>
<td valign = "top">Edit</td>
<td valign = "top">Remove</td>
</tr>
</c:forEach>
Tables:
CREATE TABLE IF NOT EXISTS Organization (id int auto_increment , name varchar(255), country int, address varchar(255), phone varchar(255)primary key(id), foreign key (country) references public.country(id_country));
CREATE TABLE IF NOT EXISTS Country (id_country int auto_increment , name varchar(255), primary key(id_country));
Model, Organization:
import javax.persistence.*;
#Entity
public class Organization {
#Id
#GeneratedValue
private Integer id;
private String name;
private Integer country;
private String address;
private String phone;
private Long market_cap;
public Organization(Integer id, String name, Integer country, String address, String phone, Long market_cap) {
this.id = id;
this.name = name;
this.country = country;
this.address = address;
this.phone = phone;
this.market_cap = market_cap;
}
public Organization() {
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getCountry() {
return country;
}
public void setCountry(Integer country) {
this.country = country;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public Long getMarket_cap() {
return market_cap;
}
public void setMarketCap(Long market_cap) {
this.market_cap = market_cap;
}
}
Model, Country:
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
#Entity
public class Country {
#Id
#GeneratedValue
private Integer id_country;
private String name;
private String isocode;
public Country() {
}
public Country(Integer id_country, String name, String isocode) {
this.id_country = id_country;
this.name = name;
this.isocode = isocode;
}
public Integer getId_country() {
return id_country;
}
public void setId_country(Integer id_country) {
this.id_country = id_country;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getIsocode() {
return isocode;
}
public void setIsocode(String isocode) {
this.isocode = isocode;
}
}
Controller:
#Controller
#RequestMapping("/")
public class HomeController {
private final OrganizationService organizationService;
private final CountryService countryService;
#Autowired
public HomeController(final OrganizationService organizationService, final CountryService countryService) {
this.organizationService = organizationService;
this.countryService = countryService;
}
#RequestMapping(value="add", method=RequestMethod.GET)
public ModelAndView addOrganization() {
ModelAndView modelAndView = new ModelAndView("add");
Organization organization = new Organization();
modelAndView.addObject("organization", organization);
List<Country> countries = countryService.listOfCountries();
modelAndView.addObject("countries", countries);
return modelAndView;
}
#RequestMapping(value="add", method=RequestMethod.POST)
public ModelAndView addingConfirm(Organization organization)
{
ModelAndView modelAndView = new ModelAndView("confirm");
organizationService.addOrganization(organization);
String message = "Organization was successfully added.";
modelAndView.addObject("message", message);
return modelAndView;
}
#RequestMapping(method = RequestMethod.GET)
public ModelAndView list() {
ModelAndView modelAndView = new ModelAndView("index");
List<Organization> organizations = organizationService.listOfOrganizations();
modelAndView.addObject("organizations", organizations);
return modelAndView;
}
#RequestMapping(value="/edit/{id}", method=RequestMethod.GET)
public ModelAndView editOrganization(#PathVariable Integer id) {
ModelAndView modelAndView = new ModelAndView("edit");
Organization organization = organizationService.getOrganization(id);
modelAndView.addObject("organization", organization);
List<Country> countries = countryService.listOfCountries();
modelAndView.addObject("countries", countries);
return modelAndView;
}
#RequestMapping(value="/edit/{id}", method=RequestMethod.POST)
public ModelAndView editConfirm(#ModelAttribute Organization organization, #PathVariable Integer id) {
ModelAndView modelAndView = new ModelAndView("confirm");
organizationService.editOrganization(organization);
String message = "Organization was successfully edited.";
modelAndView.addObject("message", message);
return modelAndView;
}
#RequestMapping(value="/remove/{id}", method=RequestMethod.GET)
public ModelAndView removeOrganization(#PathVariable Integer id) {
ModelAndView modelAndView = new ModelAndView("confirm");
organizationService.removeOrganization(id);
String message = "Organization was successfully deleted.";
modelAndView.addObject("message", message);
return modelAndView;
}
}

Answer 1

Your model is inadequate for that kind operation. What you need to do is:
Your model must change:
import javax.persistence.*;
#Entity
public class Organization {
#Id
#GeneratedValue
private Integer id;
private String name;
//This will load automatically when you load your Organization entity.
#OneToOne(cascade=CascadeType.ALL,fetch=FetchType.EAGER)
#JoinColumn(name="country")
private Country country;
private String address;
private String phone;
private Long market_cap;
public Organization(Integer id, String name, Country country, String address, String phone, Long market_cap) {
this.id = id;
this.name = name;
this.country = country;
this.address = address;
this.phone = phone;
this.market_cap = market_cap;
}
public Organization() {
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Country getCountry() {
return country;
}
public void setCountry(Country country) {
this.country = country;
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public Long getMarket_cap() {
return market_cap;
}
public void setMarketCap(Long market_cap) {
this.market_cap = market_cap;
}
}
and in you view in that case jsp:
<c:forEach items=“${organizations}" var=“organization">
<c:url var="edit" value="/edit/${organization.id}" />
<c:url var="remove" value="/remove/${organization.id}" />
<tr>
<td><c:out value="${organization.name}" /></td>
<td><c:out value="${organization.country.name}" /></td> //Should do the trick
<td><c:out value="${organization.address}" /></td>
<td><c:out value="${organization.phone}" /></td>
<td><c:out value="${organization.market_cap}" /></td>
<td valign = "top">Edit</td>
<td valign = "top">Remove</td>
</tr>
</c:forEach>