Employee and Phone example

.gitignore

@@ -1,4 +1,9 @@
-.idea
-.gradle
-build
-classes
+.idea
+.gradle
+build
+classes
+# Eclipse IDE stuff
+bin/
+.settings/
+.classpath
+.project

README.md

@@ -1,7 +1,18 @@
-Spring Boot Application with JPA, REST, Audit (Envers), Lombok and QueryDsl
------
-
-Workarounds
-----
-
- * `package-info.java` is required, for `Revision.java` to compile.
+Spring Boot Application with JPA, REST, Audit (Envers), Lombok and QueryDsl
+-----
+
+Employee and Phone example is taken from [Java Persistence wikibook](https://en.wikibooks.org/wiki/Java_Persistence).
+
+![](https://upload.wikimedia.org/wikipedia/commons/7/7e/ObjectRelational-ManyToOne2.jpg)
+
+
+Workarounds
+----
+
+ * `package-info.java` is required, for `Revision.java` to compile.
+
+## Links
+
+- [Hibernate ORM Envers](http://hibernate.org/orm/envers/), [docs](http://docs.jboss.org/envers/docs/index.html)
+- https://en.wikibooks.org/wiki/Java_Persistence
+

src/main/java/com/example/SpringBootQuerydslTestBean.java

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+package com.example;
+
+import java.util.List;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import com.example.domain.Employee;
+import com.example.domain.Phone;
+import com.example.repositories.EmployeeRepository;
+import com.example.repositories.PhoneRepository;
+import com.example.servicies.EmployeeService;
+
+/**
+ * Beans for manual testing: uncomment @Configuration or specific @Bean to enable,
+ * then Spring Boot will execute on start. 
+ * @author Paul Verest
+ */
+@Configuration // uncomment @Configuration annotation to enable
+public class SpringBootQuerydslTestBean {
+
+	private static final Logger log = LoggerFactory.getLogger(SpringBootQuerydslTestBean.class);
+
+	@Bean // uncomment @Bean annotation to enable
+	public CommandLineRunner testQuerySQLfinds(final EmployeeRepository repository,
+			final PhoneRepository phoneRepository, final EmployeeService service) {
+		return new CommandLineRunner() {
+			@Override
+			public void run(String... args) {
+				log.info("Creating test case 1 data...");
+				Employee emp1 = new Employee();
+				emp1.setFirstName("Antony");
+				emp1.setLastName("Long");
+				repository.save(emp1);
+
+				Phone tel1 = new Phone("123456789");
+				tel1.setOwner(emp1);
+				phoneRepository.save(tel1);
+				Phone tel2 = new Phone("+20123456789");
+				tel2.setOwner(emp1);
+				phoneRepository.save(tel2);
+
+				List<Phone> antonyPhones = phoneRepository.findByOwner(emp1);
+				log.info("Phone owned by "+emp1+":");
+				for (Phone p : antonyPhones) {
+					log.info(p.toString());
+				}
+				log.info("");
+
+				Iterable<Employee> employees = service.findEmployeesByPhoneNumber("456");
+				log.info("Employees found with findEmployeesByPhoneNumber('456'):");
+				for (Employee e : employees) {
+					log.info(e.toString());
+				}
+				log.info("");
+
+				Iterable<Employee> employees2 = service.findEmployeesByPhoneNumber("123456789");
+				log.info("Employees found with findEmployeesByPhoneNumber('123456789'):");
+				for (Employee e : employees2) {
+					log.info(e.toString());
+				}
+				log.info("");
+
+			}
+		};
+	}
+
+}

src/main/java/com/example/domain/Employee.java

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+package com.example.domain;
+
+import java.util.List;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.OneToMany;
+
+import lombok.Data;
+
+@Entity
+@Data
+public class Employee {
+
+	@Id
+	@GeneratedValue
+	private Long id;
+
+	private String firstName;
+
+	private String lastName;
+
+	@OneToMany(mappedBy="owner")
+	private List<Phone> phones;
+
+}

src/main/java/com/example/domain/Phone.java

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+package com.example.domain;
+
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import javax.persistence.JoinColumn;
+import javax.persistence.ManyToOne;
+
+import lombok.Data;
+
+@Entity
+@Data
+public class Phone {
+
+	@Id
+	@GeneratedValue
+	private Long id;
+
+	private String number;
+
+	public Phone(){//for JPA
+	}
+	public Phone(String number){
+		this.number = number;
+	}
+
+	@ManyToOne(fetch=FetchType.LAZY)
+	//@JoinColumn(name="OWNER_ID")
+	private Employee owner;
+}

src/main/java/com/example/repositories/EmployeeRepository.java

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+package com.example.repositories;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QueryDslPredicateExecutor;
+
+import com.example.domain.Employee;
+
+public interface EmployeeRepository extends JpaRepository<Employee, Long>, QueryDslPredicateExecutor<Employee> {
+
+}

src/main/java/com/example/repositories/PhoneRepository.java

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+package com.example.repositories;
+
+import java.util.List;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.querydsl.QueryDslPredicateExecutor;
+
+import com.example.domain.Employee;
+import com.example.domain.Phone;
+
+public interface PhoneRepository extends JpaRepository<Phone, Long>, QueryDslPredicateExecutor<Phone> {
+
+	List<Phone> findByOwner(Employee owner);
+
+}

src/main/java/com/example/servicies/EmployeeService.java

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+package com.example.servicies;
+
+import com.example.domain.Employee;
+
+public interface EmployeeService {
+
+	Iterable<Employee> findEmployeesByPhoneNumber(String phoneNumber);
+
+}

src/main/java/com/example/servicies/EmployeeServiceImpl.java

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+package com.example.servicies;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.example.domain.Employee;
+import com.example.repositories.EmployeeRepository;
+
+import static com.example.domain.QEmployee.employee;
+
+@Service
+public class EmployeeServiceImpl implements EmployeeService{
+
+	@Autowired
+	EmployeeRepository repository;
+
+	@Override
+	public Iterable<Employee> findEmployeesByPhoneNumber(String phoneNumber) {
+		return repository.findAll(employee.phones.any().number.like(phoneNumber));
+	}
+
+}

src/main/java/com/example/web/EmployeeController.java

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+package com.example.web;
+
+import org.springframework.beans.factory.annotation.Autowired;
+
+import com.example.servicies.EmployeeService;
+
+public class EmployeeController {
+
+	@Autowired
+	EmployeeService service;
+
+}