Added spring-boot sample applications

4 files changed, 135 insertions, 0 deletions

diff --git a/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/Customer.java b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/Customer.java
new file mode 100644
index 0000000..43bf0a6
--- /dev/null
+++ b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/Customer.java
@@ -0,0 +1,66 @@
+package com.example.spring.bank.customer;
+
+import java.util.List;
+
+import com.example.spring.bank.account.Account;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.OneToMany;
+
+
+
+@Entity
+public class Customer {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+	private Long id;
+    
+    private String name;
+
+	public Customer() {
+		super();
+	}
+
+	public Customer(String name) {
+		super();
+		this.name = name;
+	}
+
+	@OneToMany(mappedBy = "customer")
+//	@OneToMany
+	private List<Account> accounts;
+	
+	public List<Account> getAccounts() {
+		return accounts;
+	}
+
+	public void setAccounts(List<Account> accounts) {
+		this.accounts = accounts;
+	}
+
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	@Override
+	public String toString() {
+		return "Customer [id=" + id + ", name=" + name + "]";
+	}
+	
+}
diff --git a/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerManager.java b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerManager.java
new file mode 100644
index 0000000..1560672
--- /dev/null
+++ b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerManager.java
@@ -0,0 +1,17 @@
+package com.example.spring.bank.customer;
+
+import java.util.Optional;
+
+import com.example.spring.bank.account.Account;
+
+public interface CustomerManager {
+
+	public Customer create(Customer customer);
+	
+	public Optional<Customer> findById(Long customerId);
+	public Iterable<Customer> findAll();
+	
+	public void addAccount(Customer customer, Account account);
+	
+	// Other methods
+}
diff --git a/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerManagerImpl.java b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerManagerImpl.java
new file mode 100644
index 0000000..05b3fdc
--- /dev/null
+++ b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerManagerImpl.java
@@ -0,0 +1,45 @@
+package com.example.spring.bank.customer;
+
+import java.util.Optional;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import com.example.spring.bank.account.Account;
+
+import jakarta.transaction.Transactional;
+
+@Service
+public class CustomerManagerImpl implements CustomerManager {
+
+	@Autowired
+	private CustomerRepository customerRepository;
+	
+	@Override
+	@Transactional
+	public Customer create(Customer customer) {
+		return customerRepository.save(customer);
+	}
+
+	@Override
+	public Optional<Customer> findById(Long customerId) {
+		return customerRepository.findById(customerId);
+	}
+	
+	@Override
+	public Iterable<Customer> findAll() {
+		return customerRepository.findAll();
+	}
+
+	@Transactional
+	@Override
+	public void addAccount(Customer customer, Account account) {
+		// May not work is the customer is detached.
+		//	customer.getAccounts().add(account);
+		
+		// Access the Customer again - so that it would not be a detached entity.
+		customerRepository.findById(customer.getId()).get().getAccounts().add(account);
+	}
+	
+	// Other methods
+}
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diff --git a/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerRepository.java b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerRepository.java
new file mode 100644
index 0000000..8695d66
--- /dev/null
+++ b/spring-boot/04-bank-jpa-rest/src/main/java/com/example/spring/bank/customer/CustomerRepository.java
@@ -0,0 +1,7 @@
+package com.example.spring.bank.customer;
+
+import org.springframework.data.repository.ListCrudRepository;
+
+public interface CustomerRepository extends ListCrudRepository<Customer, Long> {
+	
+}
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