From f9ee2a39e0bf595796044a32c50c7ede00b2170d Mon Sep 17 00:00:00 2001
From: Michael Harlow <94586121+michaelharlow@users.noreply.github.com>
Date: Tue, 5 Nov 2024 23:17:28 -0600
Subject: [PATCH] db: add one to many relationship

---
 .../com/avengers/example/domain/Account.java  | 22 +++++++++++--------
 .../com/avengers/example/domain/Loan.java     | 12 ++++++----
 2 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/src/main/java/com/avengers/example/domain/Account.java b/src/main/java/com/avengers/example/domain/Account.java
index 771f865..de075d2 100644
--- a/src/main/java/com/avengers/example/domain/Account.java
+++ b/src/main/java/com/avengers/example/domain/Account.java
@@ -1,17 +1,18 @@
 package com.avengers.example.domain;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import com.fasterxml.jackson.annotation.JsonIdentityInfo;
+import com.fasterxml.jackson.annotation.ObjectIdGenerators;
+import jakarta.persistence.*;
 import lombok.Data;
 import lombok.Getter;
-import lombok.Setter;
 
+import java.util.ArrayList;
+import java.util.List;
 
 @Entity
 @Data
 @Getter
+@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id")
 public class Account
 {
     @Id
@@ -23,6 +24,9 @@ public class Account
     private String email;
     private String phoneNumber;
 
+    @OneToMany(mappedBy = "account", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<Loan> loans = new ArrayList<>();
+
     /**
      * No argument constructor for account object.
      */
@@ -51,7 +55,7 @@ public void setIsAdmin(boolean isAdmin)
 
     public void setUsername(String username)
     {
-        if (null == username || username == "" || username == " ")
+        if (null == username || username.isEmpty() || username.equals(" "))
         {
             throw new IllegalArgumentException("Username can not be null or empty!");
         }
@@ -65,7 +69,7 @@ public void setUsername(String username)
      */
     public void setPassword(String password)
     {
-        if (null == password || password == "" || password == " ")
+        if (null == password || password.isEmpty() || password.equals(" "))
         {
             throw new IllegalArgumentException("Password can not be null or empty!");
         }
@@ -79,7 +83,7 @@ public void setPassword(String password)
      */
     public void setEmail(String email)
     {
-        if (null == email || email == "" || email == " ")
+        if (null == email || email.isEmpty() || email.equals(" "))
         {
             throw new IllegalArgumentException("Email can not be null or empty!");
         }
@@ -93,7 +97,7 @@ public void setEmail(String email)
      */
     public void setPhoneNumber(String phoneNumber)
     {
-        if (null == phoneNumber || phoneNumber == "" || phoneNumber == " ")
+        if (null == phoneNumber || phoneNumber.isEmpty() || phoneNumber.equals(" "))
         {
             throw new IllegalArgumentException("Phone Number can not be null or empty!");
         }
diff --git a/src/main/java/com/avengers/example/domain/Loan.java b/src/main/java/com/avengers/example/domain/Loan.java
index b3d5e8e..c269555 100644
--- a/src/main/java/com/avengers/example/domain/Loan.java
+++ b/src/main/java/com/avengers/example/domain/Loan.java
@@ -1,9 +1,8 @@
 package com.avengers.example.domain;
 
-import jakarta.persistence.Entity;
-import jakarta.persistence.GeneratedValue;
-import jakarta.persistence.GenerationType;
-import jakarta.persistence.Id;
+import com.fasterxml.jackson.annotation.JsonIdentityInfo;
+import com.fasterxml.jackson.annotation.ObjectIdGenerators;
+import jakarta.persistence.*;
 import lombok.Data;
 import lombok.Getter;
 import lombok.Setter;
@@ -12,6 +11,7 @@
 @Entity
 @Getter
 @Setter
+@JsonIdentityInfo(generator = ObjectIdGenerators.PropertyGenerator.class, property = "id")
 public class Loan
 {
     @Id
@@ -20,6 +20,10 @@ public class Loan
     private double originAmount;
     private long interestRate;
 
+    @ManyToOne
+    @JoinColumn(name = "account_id")
+    private Account account;
+
     public Loan()
     {
     }