Bael 6317 (#15978)

* BAEL-7490 read write file in separate thread

* Change the to try resources

* Update the code to sync with article

* BAEL-6317 Query Hint

* BAEL-6317 check if date object equals to yesterday

* Wrong file

Author: wynnteo

persistence-modules/spring-data-jpa-annotations-2/src/main/java/com/baeldung/queryhint/Employee.java

@@ -0,0 +1,86 @@
+package com.baeldung.queryhint;
+
+import java.sql.Date;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.NamedQueries;
+import javax.persistence.NamedQuery;
+import javax.persistence.QueryHint;
+import javax.persistence.Table;
+
+import org.springframework.data.jpa.repository.QueryHints;
+
+@Entity
+@Table(name = "app_user")
+@NamedQueries({ @NamedQuery(name = "selectEmployee", query = "SELECT e FROM Employee e", hints = @QueryHint(name = "org.hibernate.fetchSize", value = "50")) })
+public class Employee {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private String username;
+    private String password;
+    private String gender;
+    private String name;
+    private Date joinDate;
+    private int age;
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getUsername() {
+        return username;
+    }
+
+    public void setUsername(String username) {
+        this.username = username;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    public void setPassword(String password) {
+        this.password = password;
+    }
+
+    public String getGender() {
+        return gender;
+    }
+
+    public void setGender(String gender) {
+        this.gender = gender;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Date getJoinDate() {
+        return joinDate;
+    }
+
+    public void setJoinDate(Date joinDate) {
+        this.joinDate = joinDate;
+    }
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+}

persistence-modules/spring-data-jpa-annotations-2/src/main/java/com/baeldung/queryhint/EmployeeApplication.java

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+package com.baeldung.queryhint;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class EmployeeApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(EmployeeApplication.class);
+    }
+}

persistence-modules/spring-data-jpa-annotations-2/src/main/java/com/baeldung/queryhint/EmployeeRepository.java

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+package com.baeldung.queryhint;
+
+import java.util.List;
+
+import javax.persistence.QueryHint;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.QueryHints;
+import org.springframework.stereotype.Repository;
+
+@Repository
+public interface EmployeeRepository extends JpaRepository<Employee, Long> {
+
+    @QueryHints(value = { @QueryHint(name = "org.hibernate.fetchSize", value = "50") })
+    List<Employee> findByGender(String gender);
+
+    @QueryHints(value = { @QueryHint(name = "javax.persistence.query.timeout", value = "5000") })
+    List<Employee> findActiveEmployees(long inactiveDaysThreshold);
+
+    @QueryHints(value = { @QueryHint(name = "jakarta.persistence.cache.retrieveMode", value = "USE"),
+        @QueryHint(name = "jakarta.persistence.cache.storeMode", value = "USE") })
+    List<Employee> findEmployeesByName(String name);
+
+    @QueryHints(@QueryHint(name = "org.hibernate.readOnly", value = "true"))
+    Employee findByUsername(String username);
+
+    @QueryHints(value = { @QueryHint(name = "org.hibernate.comment", value = "Retrieve employee older than specified age\"") })
+    List<Employee> findByAgeGreaterThan(int age);
+}