Develop Reference

Not able to retrive data from Crud Operation in Hibernate

I have a application written in Spring, Hibernate and SpringBoot,
I have 2 entities class with one to many mapping,
Here are my LeadUserDb entity class
#Entity
#Table(name="lead_user_db")
#NamedQuery(name="LeadUserDb.findAll", query="SELECT l FROM LeadUserDb l")
public class LeadUserDb implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Integer id;
#Column(name="branchcode")
private String branchcode;
#Column(name="reporting_level")
private int reportingLevel;
//bi-directional many-to-one association to UserBasicDetailsDb
#ManyToOne
#JoinColumn(name="email_Id")
private UserBasicDetailsDb userBasicDetailsDb;
public LeadUserDb() {
}
public String getBranchcode() {
return this.branchcode;
}
public void setBranchcode(String branchcode) {
this.branchcode = branchcode;
}
public int getReportingLevel() {
return this.reportingLevel;
}
public void setReportingLevel(int reportingLevel) {
this.reportingLevel = reportingLevel;
}
public UserBasicDetailsDb getUserBasicDetailsDb() {
return this.userBasicDetailsDb;
}
public void setUserBasicDetailsDb(UserBasicDetailsDb userBasicDetailsDb) {
this.userBasicDetailsDb = userBasicDetailsDb;
}
And This is my UserBasicDetailsDb Entity Class
#Entity
#Table(name="user_basic_details_db")
public class UserBasicDetailsDb implements Serializable {
private static final long serialVersionUID = 1L;
#Id
private String email;
private String address;
private String city;
private String dob;
private String mobile;
private String name;
private String pan;
private String pincode;
private String state;
#OneToMany(mappedBy="userBasicDetailsDb")
private List<LeadUserDb> leadUserDbs;
public UserBasicDetailsDb() {
}
public String getEmail() {
return this.email;
}
public void setEmail(String email) {
this.email = email;
}
public String getAddress() {
return this.address;
}
public void setAddress(String address) {
this.address = address;
}
public String getCity() {
return this.city;
}
public void setCity(String city) {
this.city = city;
}
public String getDob() {
return this.dob;
}
public void setDob(String dob) {
this.dob = dob;
}
public String getMobile() {
return this.mobile;
}
public void setMobile(String mobile) {
this.mobile = mobile;
}
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public String getPan() {
return this.pan;
}
public void setPan(String pan) {
this.pan = pan;
}
public String getPincode() {
return this.pincode;
}
public void setPincode(String pincode) {
this.pincode = pincode;
}
public String getState() {
return this.state;
}
public void setState(String state) {
this.state = state;
}
public List<LeadUserDb> getLeadUserDbs() {
return this.leadUserDbs;
}
public void setLeadUserDbs(List<LeadUserDb> leadUserDbs) {
this.leadUserDbs = leadUserDbs;
}
public LeadUserDb addLeadUserDb(LeadUserDb leadUserDb) {
getLeadUserDbs().add(leadUserDb);
leadUserDb.setUserBasicDetailsDb(this);
return leadUserDb;
}
public LeadUserDb removeLeadUserDb(LeadUserDb leadUserDb) {
getLeadUserDbs().remove(leadUserDb);
leadUserDb.setUserBasicDetailsDb(null);
return leadUserDb;
}
what i want to achieve is to create a query like this one
SELECT a.branchcode as branchCode,b.name FROM lead_user_db a
inner join user_basic_details_db b
where b.email = a.email_id and a.reporting_level = 3
here is what I have written my Repository class
public interface GetUserList extends CrudRepository<LeadUserDb, Integer> {
#Query(value = "SELECT a.id, a.branchcode as branchCode,b.name as name,a.reporting_level,a.email_id FROM lead_user_db a\n" +
"inner join user_basic_details_db b\n" +
"where b.email = a.email_id and a.reporting_level = ?1", nativeQuery = true)
List<LeadUserDb> findByReportingLevel(int reportingLevel);
}
and this is how I am calling it
UserBasicDetailsDb details = GetUserList.findByReportingLevel(3);
NOTE
Getting a new error Cannot determine value type from string test#dev.com
I am getting a hell lot of data, and the actual output have only 2 records
My question is how can i fetch the list of user based on reportingLevel
Any help would be appreciated

OneToOne Bi-Directional Mapping using Hibernate annotation

I want a Bi-Directional mapping on my 2 Entities(PersonDetail,
PassportDetail) but it seems that it doesn't work fine. I want that
PersonDetail has a PassportId and PassportDetail has a PersonId as well.
My PersonDetail java Code
#Entity
#Table(name="persondetail")
public class PersonDetail {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name="person_id")
private int id;
#Column(name="person_name")
private String name;
#Column(name="person_phone")
private long phone;
#OneToOne(mappedBy="person",cascade=CascadeType.ALL)
#JoinColumn(name="passport_id")
private PassportDetail passport;
public PassportDetail getPassport() {
return passport;
}
public void setPassport(PassportDetail passport) {
this.passport = passport;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public long getPhone() {
return phone;
}
public void setPhone(long phone) {
this.phone = phone;
}
#Column(name="passport_id")
private int passort_id;
public int getPassort_id() {
return passort_id;
}
public void setPassort_id(int passort_id) {
this.passort_id = passort_id;
}
}
Here is my PassportDetail Java Code
#Entity
#Table(name="PassportDetail")
public class PassportDetail {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name="passport_id")
private int id;
#Column(name="passport_number")
private String passportNumber;
#Column(name="country_name")
private String country;
#Column(name="issue_date")
#Temporal(TemporalType.DATE)
private Date date;
#OneToOne
#JoinColumn(name="person_id")
private PersonDetail person;
public String getPassportNumber() {
return passportNumber;
}
public void setPassportNumber(String passportNumber) {
this.passportNumber = passportNumber;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public PersonDetail getPerson() {
return person;
}
public void setPerson(PersonDetail person) {
this.person = person;
}
}
Here is the Output in MySql
Here is the Output of Both table as you can clearly see the problem i.e PersonDetail has a column named passport_id but it dosesn't have any value
Here is the insertion code
public class MappingMain {
public static void main(String[] args) {
PersonDetail person=new PersonDetail();
PassportDetail passport = new PassportDetail();
SimpleDateFormat sdf=new SimpleDateFormat("yyyy-mm-dd");
person.setName("Ankit");
person.setPhone(790148565);
passport.setCountry("india");
try {
passport.setDate(sdf.parse("2018-04-15"));
}
catch(Exception e)
{
}
passport.setPassportNumber("QUJMZ123");
passport.setPerson(person);
person.setPassport(passport);
PersonDao dao=new PersonDao();
dao.save(person);
}
Here is the DAO class
public class MappingDao {
SessionFactory sf=Util.getSessionFactory();
public void save(UserDemo user)
{
Session session=sf.openSession();
session.beginTransaction();
session.save(user);
session.getTransaction().commit();
session.close();
}
}

Deleting items from DB using hibernate

I have a table Teachers which is joined with the table Quiz. 1 Teacher can have N Quizes.
So, I want to be able to delete a teacher from the database.
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Cannot delete or update a parent row: a foreign key constraint fails
These are the Teacher and Quiz classes. I thought adding a delete cascade would solve it, but it didn't.
Teacher
#Entity
public class Teacher extends User{
private List<Quiz> quizList;
public Teacher() {
}
public Teacher(String name, String surname, String nick, String password) {
super(name, surname, nick, password);
quizList = new ArrayList<>();
}
#OneToMany
#Cascade(value={CascadeType.REMOVE})
#JoinColumn(name = "quiz_id")
public List<Quiz> getQuizList() {
return quizList;
}
public void setQuizList(List<Quiz> quizList) {
this.quizList = quizList;
}
}
Quiz
#Entity
public class Quiz {
private SimpleStringProperty name = new SimpleStringProperty();
private int quiz_id;
private List<Task> taskList;
private Teacher owner;
public Quiz() {
}
public Quiz(String name, Teacher owner) {
this.name.set(name);
this.owner = owner;
taskList = new ArrayList<>();
}
public Quiz(String name, Teacher owner, List<Task> taskList) {
this.name.set(name);
this.owner = owner;
this.taskList = taskList;
}
#Column(nullable = false)
public String getName() {
return name.get();
}
public SimpleStringProperty nameProperty() {
return name;
}
public void setName(String name) {
this.name.set(name);
}
#ManyToOne
#JoinColumn(name = "teacher_id")
public Teacher getOwner() {
return owner;
}
public void setOwner(Teacher owner) {
this.owner = owner;
}
#Id
#GenericGenerator(name="id" , strategy="increment")
#GeneratedValue(generator="id")
public int getQuiz_id() {
return quiz_id;
}
public void setQuiz_id(int quiz_id) {
this.quiz_id = quiz_id;
}
#OneToMany
public List<Task> getTasksList() {
return taskList;
}
public void setTasksList(List<Task> taskList) {
this.taskList = taskList;
}
}
Any idea how I could solve it? I appreciate all answers and suggestions.
EDIT: Well, I managed to solve it, I just got a bit lost in all my annotations. Here's the working version now.
Teacher
#Entity
public class Teacher extends User{
private List<Quiz> quizList;
public Teacher() {
}
public Teacher(String name, String surname, String nick, String password) {
super(name, surname, nick, password);
quizList = new ArrayList<>();
}
#OneToMany(orphanRemoval = true)
public List<Quiz> getQuizList() {
return quizList;
}
public void setQuizList(List<Quiz> quizList) {
this.quizList = quizList;
}
}
Quiz
#Entity
public class Quiz {
private SimpleStringProperty name = new SimpleStringProperty();
private int quiz_id;
private List<Task> taskList;
public Quiz() {
}
public Quiz(String name) {
this.name.set(name);
taskList = new ArrayList<>();
}
public Quiz(String name , List<Task> taskList) {
this.name.set(name);
this.taskList = taskList;
}
#Column(nullable = false)
public String getName() {
return name.get();
}
public SimpleStringProperty nameProperty() {
return name;
}
public void setName(String name) {
this.name.set(name);
}
#Id
#GenericGenerator(name="id" , strategy="increment")
#GeneratedValue(generator="id")
public int getQuiz_id() {
return quiz_id;
}
public void setQuiz_id(int quiz_id) {
this.quiz_id = quiz_id;
}
#OneToMany(orphanRemoval = true)
public List<Task> getTasksList() {
return taskList;
}
public void setTasksList(List<Task> taskList) {
this.taskList = taskList;
}
}

The parent:
#Entity
public class Teacher extends User{
private List<Quiz> quizList;
public Teacher() {
}
public Teacher(String name, String surname, String nick, String password) {
super(name, surname, nick, password);
quizList = new ArrayList<>();
}
#OneToMany(mappedBy = "teacher")
#Cascade(CascadeType.ALL)
public List<Quiz> getQuizList() {
return quizList;
}
public void setQuizList(List<Quiz> quizList) {
this.quizList = quizList;
}
}
The child:
#Entity
public class Quiz {
private SimpleStringProperty name = new SimpleStringProperty();
private int quiz_id;
private List<Task> taskList;
#ManyToOne
#Cascade(CascadeType.ALL)
#JoinColumn(name="teacher_id", nullable = false)
private Teacher owner;
public Quiz() {
}
public Quiz(String name, Teacher owner) {
this.name.set(name);
this.owner = owner;
taskList = new ArrayList<>();
}
public Quiz(String name, Teacher owner, List<Task> taskList) {
this.name.set(name);
this.owner = owner;
this.taskList = taskList;
}
#Column(nullable = false)
public String getName() {
return name.get();
}
public SimpleStringProperty nameProperty() {
return name;
}
public void setName(String name) {
this.name.set(name);
}
public Teacher getOwner() {
return owner;
}
public void setOwner(Teacher owner) {
this.owner = owner;
}
#Id
#GenericGenerator(name="id" , strategy="increment")
#GeneratedValue(generator="id")
public int getQuiz_id() {
return quiz_id;
}
public void setQuiz_id(int quiz_id) {
this.quiz_id = quiz_id;
}
#OneToMany
public List<Task> getTasksList() {
return taskList;
}
public void setTasksList(List<Task> taskList) {
this.taskList = taskList;
}
}
It should help you.

Realm object not fully persisted

I'm having trouble trying to understand how realm.io persist/save objects.
I have 3 Objects (Inventory, InventoryItem and Product);
When I create a Inventory containing InventoryItems it works fine until i close the app. When i re-open the app all InventoryItems loses the reference to Product and start to show "null" instead.
Strange thing is all other attributes like Inventory reference to InventoryItem is persisted fine. Just problem with Products.
this is how i'm trying to do:
Model
Product
public class Product extends RealmObject {
#PrimaryKey
private String id;
#Required
private String description;
private int qtdUnityType1;
private int qtdUnityType2;
private int qtdUnityType3;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public int getQtdUnityType1() {
return qtdUnityType1;
}
public void setQtdUnityType1(int qtdUnityType1) {
this.qtdUnityType1 = qtdUnityType1;
}
public int getQtdUnityType2() {
return qtdUnityType2;
}
public void setQtdUnityType2(int qtdUnityType2) {
this.qtdUnityType2 = qtdUnityType2;
}
public int getQtdUnityType3() {
return qtdUnityType3;
}
public void setQtdUnityType3(int qtdUnityType3) {
this.qtdUnityType3 = qtdUnityType3;
}
}
Inventory
public class Inventory extends RealmObject {
#PrimaryKey
private String id;
#Required
private String type;
#Required
private Date createdAt;
#Required
private String status;
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
private RealmList<InventoryItem> listItems;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public Date getCreatedAt() {
return createdAt;
}
public void setCreatedAt(Date createdAt) {
this.createdAt = createdAt;
}
public RealmList<InventoryItem> getListItems() {
return listItems;
}
public void setListItems(RealmList<InventoryItem> listItems) {
this.listItems = listItems;
}
}
InventoryItem
public class InventoryItem extends RealmObject {
#PrimaryKey
private String idItem;
private Inventory inventory;
private Product product;
public Product getProduct() {
return product;
}
public void setProduct(Product product) {
this.product = product;
}
private Date expirationDate;
private int qtdUnityType1;
private int qtdUnityType2;
private int qtdUnityType3;
private int qtdDiscard;
public String getIdItem() {
return idItem;
}
public void setIdItem(String idItem) {
this.idItem = idItem;
}
public Inventory getInventory() {
return inventory;
}
public void setInventory(Inventory inventory) {
this.inventory = inventory;
}
public Date getExpirationDate() {
return expirationDate;
}
public void setExpirationDate(Date expirationDate) {
this.expirationDate = expirationDate;
}
public int getQtdUnityType1() {
return qtdUnityType1;
}
public void setQtdUnityType1(int qtdUnityType1) {
this.qtdUnityType1 = qtdUnityType1;
}
public int getQtdUnityType2() {
return qtdUnityType2;
}
public void setQtdUnityType2(int qtdUnityType2) {
this.qtdUnityType2 = qtdUnityType2;
}
public int getQtdUnityType3() {
return qtdUnityType3;
}
public void setQtdUnityType3(int qtdUnityType3) {
this.qtdUnityType3 = qtdUnityType3;
}
public int getQtdDiscard() {
return qtdDiscard;
}
public void setQtdDiscard(int qtdDiscard) {
this.qtdDiscard = qtdDiscard;
}
}
and finally one of the millions ways i tried to persist
realm.beginTransaction();
Inventory inventory = realm.createObject(Inventory.class);
inventory.setId(id);
inventory.setCreatedAt(new DateTime().toDate());
if (radioGroup.getCheckedRadioButtonId() == R.id.rbInventario) {
inventory.setType("Inventário");
} else {
inventory.setType("Validade");
}
inventory.setStatus("Aberto");
RealmList<InventoryItem> inventoryItems = new RealmList<>();
RealmResults<Product> productsRealmResults = realm.allObjects(Product.class);
for (int i = 1; i <= productsRealmResults.size(); i++) {
InventoryItem item = realm.createObject(InventoryItem.class);
item.setIdProduct(productsRealmResults.get(i - 1).getId() + " - " + productsRealmResults.get(i - 1).getDescription());
item.setProduct(productsRealmResults.get(i - 1));
item.setIdItem(i + "-" + id);
item.setInventory(inventory);
item = realm.copyToRealmOrUpdate(item);
item = realm.copyToRealmOrUpdate(item);
inventoryItems.add(item);
}
inventory.setListItems(inventoryItems);
realm.copyToRealmOrUpdate(inventory);
realm.commitTransaction();
I already looked trough some answers here like this one:
stack answer
and the Java-examples (person, dog, cat)
provided with the API
but I can't understand how to properly insert this.

The problem is that you are setting a list of InventoryItem elements which are not added to the Realm database.
Change InventoryItem item = new InventoryItem(); to InventoryItem item = realm.createObject(InventoryItem.class);
Also, the inventoryItems themselves aren't stored in Realm db. Add realm.copyToRealmOrUpdate(inventoryItems) after the loop.

Hibernate JPA searching two joined tables

I am pretty new to Hibernate and JPA implementation in Spring, so basically have set up a MySQL 5 database which maps to the domain objects below.
I am trying to search for Location on the Company_Details table but I can't figure out how to search the class Product_Details for Product_Name at the same time
If anyone could help that would be great.
Company_Details
#Entity
public class Company_Details implements Serializable{
/**
*
*/
private static final long serialVersionUID = 3336251433829975771L;
#Id
#GeneratedValue
private Integer Id;
private String Company;
private String Address_Line_1;
private String Address_Line_2;
private String Postcode;
private String County;
private String Country;
private String Mobile_Number;
private String Telephone_Number;
private String URL;
private String Contact;
private String Logo_URL;
private double Amount_Overall;
private double Amount_Paid;
private Timestamp Date_Joined;
private int Account_Details;
#OneToMany(fetch = FetchType.EAGER, mappedBy = "Company_Id")
private List<Product_Details> products;
public Integer getId() {
return Id;
}
public void setId(Integer id) {
Id = id;
}
public String getCompany() {
return Company;
}
public void setCompany(String company) {
Company = company;
}
public String getAddress_Line_1() {
return Address_Line_1;
}
public void setAddress_Line_1(String address_Line_1) {
Address_Line_1 = address_Line_1;
}
public String getAddress_Line_2() {
return Address_Line_2;
}
public void setAddress_Line_2(String address_Line_2) {
Address_Line_2 = address_Line_2;
}
public String getPostcode() {
return Postcode;
}
public void setPostcode(String postcode) {
Postcode = postcode;
}
public String getCounty() {
return County;
}
public void setCounty(String county) {
County = county;
}
public String getCountry() {
return Country;
}
public void setCountry(String country) {
Country = country;
}
public String getMobile_Number() {
return Mobile_Number;
}
public void setMobile_Number(String mobile_Number) {
Mobile_Number = mobile_Number;
}
public String getTelephone_Number() {
return Telephone_Number;
}
public void setTelephone_Number(String telephone_Number) {
Telephone_Number = telephone_Number;
}
public String getURL() {
return URL;
}
public void setURL(String uRL) {
URL = uRL;
}
public String getContact() {
return Contact;
}
public void setContact(String contact) {
Contact = contact;
}
public String getLogo_URL() {
return Logo_URL;
}
public void setLogo_URL(String logo_URL) {
Logo_URL = logo_URL;
}
public double getAmount_Overall() {
return Amount_Overall;
}
public void setAmount_Overall(double amount_Overall) {
Amount_Overall = amount_Overall;
}
public double getAmount_Paid() {
return Amount_Paid;
}
public void setAmount_Paid(double amount_Paid) {
Amount_Paid = amount_Paid;
}
public Timestamp getDate_Joined() {
return Date_Joined;
}
public void setDate_Joined(Timestamp date_Joined) {
Date_Joined = date_Joined;
}
public int getAccount_Details() {
return Account_Details;
}
public void setAccount_Details(int account_Details) {
Account_Details = account_Details;
}
public List<Product_Details> getProducts() {
return products;
}
public void setProducts(List<Product_Details> products) {
this.products = products;
}
Product_Details
#Entity
public class Product_Details implements Serializable{
/**
*
*/
private static final long serialVersionUID = 6477618197240654478L;
#Id
#GeneratedValue
private Integer Id;
private Integer Company_Id;
private String Product_Name;
private String Description;
private String Main_Photo_URL;
private String Other_Photo_URLS;
private Integer Total_Bookings;
private double Average_Rating;
private Integer Number_Of_Slots;
private Integer Time_Per_Slot;
private double Price_Per_Slot;
private String Monday_Open;
private String Tuesday_Open;
private String Wednesday_Open;
private String Thursday_Open;
private String Friday_Open;
private String Saturday_Open;
private String Sunday_Open;
private String Dates_Closed;
public Integer getId() {
return Id;
}
public void setId(Integer id) {
Id = id;
}
public Integer getCompany_Id() {
return Company_Id;
}
public void setCompany_Id(Integer company_Id) {
Company_Id = company_Id;
}
public String getProduct_Name() {
return Product_Name;
}
public void setProduct_Name(String product_Name) {
Product_Name = product_Name;
}
public String getDescription() {
return Description;
}
public void setDescription(String description) {
Description = description;
}
public String getMain_Photo_URL() {
return Main_Photo_URL;
}
public void setMain_Photo_URL(String main_Photo_URL) {
Main_Photo_URL = main_Photo_URL;
}
public String getOther_Photos_URLS() {
return Other_Photo_URLS;
}
public void setOther_Photos_URLS(String other_Photo_URLS) {
Other_Photo_URLS = other_Photo_URLS;
}
public Integer getTotal_Bookings() {
return Total_Bookings;
}
public void setTotal_Bookings(Integer total_Bookings) {
Total_Bookings = total_Bookings;
}
public double getAverage_Rating() {
return Average_Rating;
}
public void setAverage_Rating(double average_Rating) {
Average_Rating = average_Rating;
}
public Integer getNumber_Of_Slots() {
return Number_Of_Slots;
}
public void setNumber_Of_Slots(Integer number_Of_Slots) {
Number_Of_Slots = number_Of_Slots;
}
public Integer getTime_Per_Slot() {
return Time_Per_Slot;
}
public void setTime_Per_Slot(Integer time_Per_Slot) {
Time_Per_Slot = time_Per_Slot;
}
public double getPrice_Per_Slot() {
return Price_Per_Slot;
}
public void setPrice_Per_Slot(double price_Per_Slot) {
Price_Per_Slot = price_Per_Slot;
}
public String getMonday_Open() {
return Monday_Open;
}
public void setMonday_Open(String monday_Open) {
Monday_Open = monday_Open;
}
public String getTuesday_Open() {
return Tuesday_Open;
}
public void setTuesday_Open(String tuesday_Open) {
Tuesday_Open = tuesday_Open;
}
public String getWednesday_Open() {
return Wednesday_Open;
}
public void setWednesday_Open(String wednesday_Open) {
Wednesday_Open = wednesday_Open;
}
public String getThursday_Open() {
return Thursday_Open;
}
public void setThursday_Open(String thursday_Open) {
Thursday_Open = thursday_Open;
}
public String getFriday_Open() {
return Friday_Open;
}
public void setFriday_Open(String friday_Open) {
Friday_Open = friday_Open;
}
public String getSaturday_Open() {
return Saturday_Open;
}
public void setSaturday_Open(String saturday_Open) {
Saturday_Open = saturday_Open;
}
public String getSunday_Open() {
return Sunday_Open;
}
public void setSunday_Open(String sunday_Open) {
Sunday_Open = sunday_Open;
}
public String getDates_Closed() {
return Dates_Closed;
}
public void setDates_Closed(String dates_Closed) {
Dates_Closed = dates_Closed;
}
}
#Service
public class ProductServiceImpl implements ProductService{
private final static Logger LOG = Logger.getLogger(ProductServiceImpl.class.getName());
#PersistenceContext
EntityManager em;
#Transactional
public List<Company_Details> search(Search search) {
LOG.info("Entering search method");
CriteriaBuilder builder = em.getCriteriaBuilder();
CriteriaQuery<Company_Details> c = builder.createQuery(Company_Details.class);
Root<Company_Details> companyRoot = c.from(Company_Details.class);
c.select(companyRoot);
c.where(builder.equal(companyRoot.get("County"),search.getLocation()));
return em.createQuery(c).getResultList();
}
}

You need two criteria: criteria on the Company_Details class
And criteria on the Product_Details class
Then
Criteria crit1 = session.createCriteria(Company_Details.class);
crit1.add(restriction)
Criteria crit2 = crit1.createCriteria("products");
crit2.add(restriction)
// Then query crit1
List results = crit1.list();