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This commit is contained in:
Sherwin Price
2025-10-29 22:27:51 -04:00
parent 1a4014c503
commit b9d3046dd3
18 changed files with 422 additions and 145 deletions
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15
Api/src/main/java/edu/inventorym/Api.java
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@@ -34,8 +34,6 @@ public interface Api {
* is not already in the inventory before adding
*/
InventoryManager.getInstance().getArtPieceTypes().forEach(System.out::println);
/* Add Inventory */
InventoryManager.getInstance().add(make(new Drawing()));
@@ -45,17 +43,24 @@ public interface Api {
InventoryManager.getInstance().add(make(new Sculpture()));
InventoryManager.getInstance().add(make(new Sculpture()));
/* Add Customer */
//CustomerManager.getInstance().add(new Customer("Kate", "Demsey", "310-676-4844", "kate@museum.com"));
//CustomerManager.getInstance().add(new Customer("Jim", "Gumbly", "203-676-4844", "jim@homedeco.com"));
CustomerManager.getInstance().load();
/*
* 2. Remove art object from the inventory
*/
InventoryManager imgr = InventoryManager.getInstance();
InventoryPiece art = imgr.find("####");
imgr.Remove(art);
System.out.println(String.format("Art Pieces in INVENTORY: count %d", imgr.INVENTORY.size()));
InventoryPiece art = imgr.INVENTORY.getLast();
InventoryPiece piece = imgr.find(art.getId());
imgr.Remove(piece);
System.out.println(String.format("Removed 1 Art Pieces from INVENTORY: count %d", imgr.INVENTORY.size()));
/*
* 3. Return a list of all art objects from inventory
*/
CustomerManager cmgr = CustomerManager.getInstance();
Customer customer = cmgr.findByEmail("kate@it.com");
Customer customer = cmgr.findByEmail("kate@museum.com");
InventoryList customerCart = new InventoryList();
TransactionManager tmgr = TransactionManager.getInstance();

16
Api/src/resources/db/customers.json Normal file
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@@ -0,0 +1,16 @@
[
{
"email": "kate@museum.com",
"id": "1039445606",
"nameFirst": "Kate",
"nameLast": "Demsey",
"phone": "310-676-4844"
},
{
"email": "jim@homedeco.com",
"id": "4312148107",
"nameFirst": "Jim",
"nameLast": "Gumbly",
"phone": "203-676-4844"
}
]

3
Model/src/main/java/edu/inventorym/model/Customer.java
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@@ -20,10 +20,11 @@ public class Customer {
this.nameLast = nameLast;
this.phone = phone;
this.email = email;
this.id = DataRepository.generateRandom10DigitID();
this.updated = ZonedDateTime.now();
}
public Customer(){}
protected Customer(){}
public String getEmail() {
return email;

25
Model/src/main/java/edu/inventorym/model/CustomerManager.java
View File

@@ -4,6 +4,8 @@
*/
package edu.inventorym.model;
import java.io.IOException;
public class CustomerManager {
final static CustomerManager INSTANCE = new CustomerManager();
@@ -28,6 +30,29 @@ public class CustomerManager {
}
public Customer findByEmail(String email){
for (Customer c : CUSTOMERS) {
if (email.equalsIgnoreCase(c.getEmail())) {
return c;
}
}
return null;
}
public void save() {
try {
DataRepository.write(this);
} catch (IOException e) {
e.printStackTrace();
}
}
public void load(){
try {
DataRepository.read(this);
} catch (IOException e) {
e.printStackTrace();
} catch(Exception e){
e.printStackTrace();
}
}
}

140
Model/src/main/java/edu/inventorym/model/DataRepository.java
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@@ -4,9 +4,18 @@
*/
package edu.inventorym.model;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.StringReader;
import java.math.BigInteger;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.OpenOption;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.security.SecureRandom;
import java.util.ArrayList;
import java.util.Base64;
@@ -25,7 +34,7 @@ public class DataRepository {
return INSTANCE;
}
final public static String generateRandomID(int byteLength) {
final public static String generateRandomID(int byteLength) {
SecureRandom secureRandom = new SecureRandom();
byte[] bytes = new byte[byteLength];
secureRandom.nextBytes(bytes);
@@ -51,59 +60,57 @@ public class DataRepository {
public static void WalkFileSystemTree(final TransactionManager manager) throws IOException {
}
static void serialize_deserialize(){
static void serialize_deserialize() {
String jsonResponse = "";
try{
// Deserialize the JSON string to a Java RpcResponse object
Jsonb jsonb = JsonbBuilder.create();
jsonResponse = jsonb.toJson((InventoryPiece)new Drawing());
try {
// Deserialize the JSON string to a Java RpcResponse object
Jsonb jsonb = JsonbBuilder.create();
jsonResponse = jsonb.toJson((InventoryPiece) new Drawing());
System.out.println("json string: " + jsonResponse);
System.out.println("json string: " + jsonResponse);
InventoryPiece response = jsonb.fromJson(jsonResponse, Drawing.class);
InventoryPiece response = jsonb.fromJson(jsonResponse, Drawing.class);
System.out.println("Result: " + response);
System.out.println("ID: " + response.getId());
System.out.println("Result: " + response);
System.out.println("ID: " + response.getId());
}catch(Exception e){
e.printStackTrace();
}
try{
// Configure pretty-printing and other settings
JsonbConfig config = new JsonbConfig()
.withFormatting(true); // Enable pretty-printing
Jsonb jsonb = JsonbBuilder.create(config);
// Serialize using the custom configuration
String prettyJsonString = jsonb.toJson(new Drawing());
System.out.println("json string: " + prettyJsonString);
}catch(Exception e){
} catch (Exception e) {
e.printStackTrace();
}
try {
List<Drawing> rpcs = new ArrayList<Drawing>();
rpcs.add(new Drawing());
rpcs.add(new Drawing());
rpcs.add(new Drawing());
// Configure pretty-printing and other settings
JsonbConfig config = new JsonbConfig()
.withFormatting(true); // Enable pretty-printing
Jsonb jsonb = JsonbBuilder.create(config);
// Create Jsonb and serialize
Jsonb jsonb = JsonbBuilder.create();
String result = jsonb.toJson(rpcs);
// Serialize using the custom configuration
String prettyJsonString = jsonb.toJson(new Drawing());
System.out.println("json string: " + prettyJsonString);
} catch (Exception e) {
e.printStackTrace();
}
try {
List<Drawing> rpcs = new ArrayList<Drawing>();
rpcs.add(new Drawing());
rpcs.add(new Drawing());
rpcs.add(new Drawing());
// Create Jsonb and serialize
Jsonb jsonb = JsonbBuilder.create();
String result = jsonb.toJson(rpcs);
// Deserialize back
rpcs = jsonb.fromJson(result,
new ArrayList<Drawing>() {}
.getClass()
.getGenericSuperclass());
new ArrayList<Drawing>() {
}
.getClass()
.getGenericSuperclass());
System.out.println( rpcs );
System.out.println(rpcs);
} catch (Exception e) {
e.printStackTrace();
@@ -111,24 +118,59 @@ public class DataRepository {
}
public static <T> List<T> mapJsonToObjectList(String body, Class<T> baseClass) {
try (var reader = Json.createReader(new StringReader(body));
Jsonb jsonb = JsonbBuilder.create()){
JsonArray jsonArray = reader.readArray();
public static <T> List<T> mapJsonToObjectList(String body, Class<T> baseClass) throws Exception {
try (var reader = Json.createReader(new StringReader(body));
Jsonb jsonb = JsonbBuilder.create()) {
JsonArray jsonArray = reader.readArray();
return jsonArray.stream()
.map(jsonValue -> jsonb.fromJson(jsonValue.toString(), baseClass))
.toList();
} catch (Exception e) {
return (List<T>) new ArrayList<Drawing>();
return jsonArray.stream()
.map(jsonValue -> jsonb.fromJson(jsonValue.toString(), baseClass))
.toList();
}
}
static void write(CustomerManager mgr) throws IOException{
JsonbConfig config = new JsonbConfig()
.withFormatting(true); // Enable pretty-printing
Jsonb jsonb = JsonbBuilder.create(config);
String result = jsonb.toJson(mgr.CUSTOMERS);
String dataRoot = getRepositoryConfig.getPath();
dataRoot = dataRoot + "/customers.json";
Path path = Paths.get(dataRoot);
try (BufferedWriter writer = Files.newBufferedWriter(path, StandardCharsets.UTF_8)) {
writer.write(result);
writer.flush();
}
}
public static void read(CustomerManager customerManager) throws IOException, Exception {
String dataRoot = getRepositoryConfig.getPath();
dataRoot = dataRoot + "/customers.json";
Path path = Paths.get(dataRoot);
String result;
try (BufferedReader in = new BufferedReader(new FileReader(path.toFile(), StandardCharsets.UTF_8))){
result = in.readAllAsString();
}
List<Customer> customers = mapJsonToObjectList(result, Customer.class);
/* Jsonb jsonb = JsonbBuilder.create();
CustomerList customers = jsonb.fromJson(result, new CustomerList() { }
.getClass()
.getGenericSuperclass()); */
customerManager.CUSTOMERS.clear();
customerManager.CUSTOMERS.addAll(customers);
}
public final static class getRepositoryConfig {
public final static String getPath() {
String home = System.getenv("HOME") != null ? System.getenv("HOME")
: System.getenv("HOMEDRIVE") + System.getenv("HOMEPATH");
return home.replace('\\', '/') + "/workspace/reservationsystem/src/resources/db";
return home.replace('\\', '/') + "/workspace/inventorym/Api/src/resources/db";
}
}
}

8
Model/src/main/java/edu/inventorym/model/Drawing.java
View File

@@ -11,6 +11,12 @@ public class Drawing extends InventoryPiece {
public String category;
public Drawing() {
super(InventoryType.DRAWING);
super();
}
@Override
public float computePrice() {
return price;
}
}

20
Model/src/main/java/edu/inventorym/model/InventoryManager.java
View File

@@ -21,15 +21,17 @@ public class InventoryManager {
private InventoryManager() {
}
public Set<InventoryType> getArtPieceTypes() {
return EnumSet.allOf(InventoryType.class);
}
public void add(InventoryPiece iPiece) {
INVENTORY.add(iPiece);
}
public InventoryPiece find(String id) {
for (InventoryPiece iv : INVENTORY) {
if (iv.getId() == id) {
return iv;
}
}
return null;
}
@@ -40,7 +42,7 @@ public class InventoryManager {
public void save() {
}
public void loadAll(){
public void loadAll() {
try {
DataRepository.WalkFileSystemTree(INSTANCE);
} catch (IOException e) {
@@ -49,11 +51,9 @@ public class InventoryManager {
}
}
public void Remove(InventoryPiece iPiece) {
//int i = find(iPiece);
//INVENTORY.remove(i)
//*** multiple quantiies of iPiece */
public InventoryPiece Remove(InventoryPiece iPiece) {
int i = INVENTORY.indexOf(iPiece);
return INVENTORY.remove(i);
};
}

17
Model/src/main/java/edu/inventorym/model/InventoryPiece.java
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@@ -23,23 +23,14 @@ public abstract class InventoryPiece {
public String Author;
InventoryType iventoryType;
public InventoryPiece(InventoryType iventoryType) {
this.iventoryType = iventoryType;
public InventoryPiece() {
this.created = ZonedDateTime.now();
this.id = DataRepository.generateRandom10DigitID();
}
public InventoryPiece() {
}
public Boolean isArt(InventoryPiece piece) {
return false;
this.price = 10.99F;
}
public String getType() {
return this.iventoryType.toString();
return this.getClass().getSimpleName().toUpperCase();
};
public String getId() {
@@ -89,4 +80,6 @@ public abstract class InventoryPiece {
public void setAuthor(String author) {
Author = author;
}
public abstract float computePrice();
}

9
Model/src/main/java/edu/inventorym/model/InventoryType.java
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@@ -1,9 +0,0 @@
/**
* license: GPLv3
edu.inventorym
*/
package edu.inventorym.model;
public enum InventoryType {
PAINTING, DRAWING, PRINT, SCULPTURE
}

69
Model/src/main/java/edu/inventorym/model/Painting.java
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@@ -5,14 +5,77 @@
package edu.inventorym.model;
public class Painting extends InventoryPiece {
int height;
int height;
int width;
String style;
String technique;
String category;
public Painting (){
super(InventoryType.PAINTING);
public Painting(int height, int width) {
super();
this.height = height;
this.width = width;
}
public Painting() {
super();
}
public int getHeight() {
return height;
}
public void setHeight(int height) {
this.height = height;
}
public int getWidth() {
return width;
}
public void setWidth(int width) {
this.width = width;
}
public String getStyle() {
return style;
}
public void setStyle(String style) {
this.style = style;
}
public String getTechnique() {
return technique;
}
public void setTechnique(String technique) {
this.technique = technique;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
@Override
public float computePrice() {
int sqarea = height * width;
float additional = 0;
if (sqarea < 100) {
additional = 5.99F;
}
if (sqarea > 100 && sqarea < 300) {
additional = 10.99F;
}
if (sqarea > 300) {
additional = 15.99F;
}
return price + additional;
}
}

7
Model/src/main/java/edu/inventorym/model/Print.java
View File

@@ -10,7 +10,7 @@ public class Print extends InventoryPiece {
String category;
public Print(){
super(InventoryType.PRINT);
super();
}
public Print(String openEditionType, String category) {
@@ -33,4 +33,9 @@ public class Print extends InventoryPiece {
public void setCategory(String category) {
this.category = category;
}
@Override
public float computePrice() {
return price;
}
}

29
Model/src/main/java/edu/inventorym/model/Sculpture.java
View File

@@ -9,8 +9,33 @@ public class Sculpture extends InventoryPiece {
String material;
float weight;
public Sculpture (){
super(InventoryType.SCULPTURE);
public Sculpture(float weight) {
super();
this.weight = weight;
}
public Sculpture() {
super();
}
public String getMaterial() {
return material;
}
public void setMaterial(String material) {
this.material = material;
}
public float getWeight() {
return weight;
}
public void setWeight(float weight) {
this.weight = weight;
}
@Override
public float computePrice() {
return price + (weight * 0.20F);
}
}

40
Model/src/main/java/edu/inventorym/model/Transaction.java
View File

@@ -15,6 +15,7 @@ public class Transaction {
String customerId;
Address shipToAddress;
InventoryList customerInventoryList;
float totalPrice = 0.0F;
JsonArray attributes;
public Transaction() {
@@ -33,6 +34,38 @@ public class Transaction {
return created;
}
public String getCustomerId() {
return customerId;
}
public Address getShipToAddress() {
return shipToAddress;
}
public InventoryList getCustomerInventoryList() {
return customerInventoryList;
}
public void setCustomerInventoryList(InventoryList customerInventoryList) {
this.customerInventoryList = customerInventoryList;
}
public float getTotalPrice() {
return totalPrice;
}
public void setTotalPrice(float totalPrice) {
this.totalPrice = totalPrice;
}
public JsonArray getAttributes() {
return attributes;
}
public void setAttributes(JsonArray attributes) {
this.attributes = attributes;
}
public void setCreated(ZonedDateTime created) {
this.created = created;
}
@@ -45,5 +78,12 @@ public class Transaction {
this.completed = completed;
}
public void setShipToAddress(Address mailing) {
this.shipToAddress = mailing;
}
public void setCustomerId(String id) {
this.customerId = id;
}
}

21
Model/src/main/java/edu/inventorym/model/TransactionManager.java
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@@ -17,19 +17,23 @@ public class TransactionManager {
public TransactionList TRANSACTIONS = new TransactionList();
public Transaction TransactRequest(Customer customer, InventoryList iPieces, Transaction transacted) {
transacted.setCustomerId(customer.getId());
transacted.setShipToAddress(customer.getMailing());
transacted.setCustomerInventoryList(iPieces);
compute(transacted);
return transacted;
}
public void compute(Transaction tran, TransactionOperationEnum operation) {
public void complete(Transaction tran) {
tran.setCompleted(ZonedDateTime.now());
}
public void compute(Transaction tran) {
}
public void complete(Transaction tran) {
float price = 0.0F;
for (InventoryPiece piece : tran.customerInventoryList) {
price += piece.computePrice();
}
tran.totalPrice = price;
}
public TransactionList findByCustomerEmail(String email) {
@@ -49,8 +53,7 @@ public class TransactionManager {
}
public void save() {
// TODO Auto-generated method stub
throw new UnsupportedOperationException("Unimplemented method 'save'");
}
}

14
Model/src/main/java/edu/inventorym/model/TransactionOperationEnum.java
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@@ -1,14 +0,0 @@
/**
* license: GPLv3
edu.inventorym
*/
package edu.inventorym.model;
public enum TransactionOperationEnum {
Completed,
Draft,
Pricing,
Removed,
Shipping
}

28
README.md
View File

@@ -1,24 +1,16 @@
# inventorym
Inheritance: Shows inheritance relationships (Drawing, Painting, Print, Sculpture extending InventoryPiece)
Associations: Shows composition relationships (Customer has Address, Transaction has Address and InventoryList)
Enumerations: InventoryType and TransactionOperationEnum
Exceptions: four application exception classes extend RuntimeException
Manager Classes: Singleton pattern managers with their collections
Collections: Custom list classes extending ArrayList
Abstract base class (InventoryPiece) with 4 concrete implementations (Drawing, Painting, Print, Sculpture)
Enumerations (InventoryType, TransactionOperationEnum)
Manager classes (Singleton pattern): InventoryManager, CustomerManager, TransactionManager
Model classes: Customer, Address, Transaction
Collection classes: InventoryList, CustomerList, TransactionList
Repository: DataRepository for persistence
Exception classes: 4 custom runtime exceptions
Exception Classes: Four custom exception types
Value Object: Address class
Customer Management: Customer, CustomerList, and CustomerManager
Inventory Management: Abstract InventoryPiece with concrete implementations (Drawing, Painting, Print, Sculpture), plus InventoryList and InventoryManager
Transaction Management: Transaction, TransactionList, and TransactionManager
Data Repository: Singleton DataRepository for data operations
Relationships shown:
Inheritance (empty arrow heads)
Composition (diamond arrow heads)
Associations (open arrow heads)
Dependencies (dashed lines)
Inheritance (hollow arrows)
Associations (regular arrows)
Composition (diamond arrows)
Dependencies (dashed arrows)

4
uml/classdiagram.dot
View File

@@ -72,8 +72,8 @@ digraph InventoryManagementSystem {
TransactionManager -> TransactionList [arrowhead=diamond, label="TRANSACTIONS"];
// List contains relationships
InventoryList -> InventoryPiece [arrowhead=diamond, style=dashed, label="contains"];
CustomerList -> Customer [arrowhead=diamond, style=dashed, label="contains"];
InventoryList -> InventoryPiece [arrowhead=odiamond, style=dashed, label="contains 0..*"];
CustomerList -> Customer [arrowhead=odiamond, style=dashed, label="contains 0..*"];
TransactionList -> Transaction [arrowhead=diamond, style=dashed, label="contains"];
// Manager relationships

84
uml/classdiagram2.dot Normal file
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@@ -0,0 +1,84 @@
digraph InventorySystem {
// Graph settings
rankdir=TB;
node [shape=record, fontname="Arial", fontsize=10];
edge [fontname="Arial", fontsize=9];
// Abstract Class
InventoryPiece [label="{InventoryPiece\n«abstract»|+ id : String\l+ price : float\l+ created : ZonedDateTime\l+ title : String\l+ description : String\l+ Author : String\l- iventoryType : InventoryType\l|+ InventoryPiece(InventoryType)\l+ InventoryPiece()\l+ isArt(InventoryPiece) : Boolean\l+ getType() : String\l+ getId() : String\l+ setId(String) : void\l+ getPrice() : float\l+ setPrice(float) : void\l+ getCreated() : ZonedDateTime\l+ setCreated(ZonedDateTime) : void\l+ getTitle() : String\l+ setTitle(String) : void\l+ getDescription() : String\l+ setDescription(String) : void\l+ getAuthor() : String\l+ setAuthor(String) : void\l}", style=filled, fillcolor=lightyellow];
// Concrete Classes extending InventoryPiece
Drawing [label="{Drawing|+ style : String\l+ technique : String\l+ category : String\l|+ Drawing()\l}"];
Painting [label="{Painting|- height : int\l- width : int\l- style : String\l- technique : String\l- category : String\l|+ Painting()\l}"];
Print [label="{Print|- openEditionType : String\l- category : String\l|+ Print()\l+ Print(String, String)\l+ getOpenEditionType() : String\l+ setOpenEditionType(String) : void\l+ getCategory() : String\l+ setCategory(String) : void\l}"];
Sculpture [label="{Sculpture|- material : String\l- weight : float\l|+ Sculpture()\l}"];
// Enums
InventoryType [label="{«enumeration»\nInventoryType|PAINTING\lDRAWING\lPRINT\lSCULPTURE\l}", style=filled, fillcolor=lightblue];
TransactionOperationEnum [label="{«enumeration»\nTransactionOperationEnum|Completed\lDraft\lPricing\lRemoved\lShipping\l}", style=filled, fillcolor=lightblue];
// Value Objects
Address [label="{Address|- street : String\l- city : String\l- state : String\l- zip : String\l|+ Address()\l+ Address(String, String, String, String)\l+ getStreet() : String\l+ setStreet(String) : void\l+ getCity() : String\l+ setCity(String) : void\l+ getState() : String\l+ setState(String) : void\l+ getZip() : String\l+ setZip(String) : void\l+ hashCode() : int\l+ equals(Object) : boolean\l+ toString() : String\l}"];
// Domain Classes
Customer [label="{Customer|# id : String\l# updated : ZonedDateTime\l- phone : String\l- mailing : Address\l- email : String\l- nameFirst : String\l- nameLast : String\l|+ Customer(String, String, String, String)\l+ Customer()\l+ getEmail() : String\l+ getId() : String\l+ setId(String) : void\l+ getPhone() : String\l+ setPhone(String) : void\l+ getMailing() : Address\l+ setMailing(Address) : void\l+ setEmail(String) : void\l+ getNameFirst() : String\l+ setNameFirst(String) : void\l+ getNameLast() : String\l+ setNameLast(String) : void\l}"];
Transaction [label="{Transaction|- id : String\l- created : ZonedDateTime\l- completed : ZonedDateTime\l- customerId : String\l- shipToAddress : Address\l- customerInventoryList : InventoryList\l- attributes : JsonArray\l|+ Transaction()\l+ getId() : String\l+ setId(String) : void\l+ getCreated() : ZonedDateTime\l+ setCreated(ZonedDateTime) : void\l+ getCompleted() : ZonedDateTime\l+ setCompleted(ZonedDateTime) : void\l}"];
// Collection Classes
InventoryList [label="{InventoryList|+ InventoryList()\l}", style=filled, fillcolor=lightgreen];
CustomerList [label="{CustomerList|+ CustomerList()\l}", style=filled, fillcolor=lightgreen];
TransactionList [label="{TransactionList|+ TransactionList()\l+ add(Transaction) : boolean\l}", style=filled, fillcolor=lightgreen];
// Manager Classes (Singletons)
InventoryManager [label="{«singleton»\nInventoryManager|- INSTANCE : InventoryManager\l+ INVENTORY : InventoryList\l|- InventoryManager()\l+ getInstance() : InventoryManager\l+ getArtPieceTypes() : Set\<InventoryType\>\l+ add(InventoryPiece) : void\l+ find(String) : InventoryPiece\l+ update(InventoryPiece) : InventoryPiece\l+ save() : void\l+ loadAll() : void\l+ Remove(InventoryPiece) : void\l}", style=filled, fillcolor=lightcoral];
CustomerManager [label="{«singleton»\nCustomerManager|- INSTANCE : CustomerManager\l+ CUSTOMERS : CustomerList\l|+ getInstance() : CustomerManager\l+ add(Customer) : boolean\l- check(Customer) : void\l+ findById(String) : Customer\l+ findByEmail(String) : Customer\l}", style=filled, fillcolor=lightcoral];
TransactionManager [label="{«singleton»\nTransactionManager|- INSTANCE : TransactionManager\l+ TRANSACTIONS : TransactionList\l|+ getInstance() : TransactionManager\l+ TransactRequest(Customer, InventoryList, Transaction) : Transaction\l+ compute(Transaction, TransactionOperationEnum) : void\l+ compute(Transaction) : void\l+ complete(Transaction) : void\l+ findByCustomerEmail(String) : TransactionList\l+ findByTransactionId(String) : TransactionList\l+ findByTransactionDate(ZonedDateTime) : TransactionList\l+ remove(Transaction) : void\l+ save() : void\l}", style=filled, fillcolor=lightcoral];
// Utility Class
DataRepository [label="{«singleton»\nDataRepository|- INSTANCE : DataRepository\l|+ getInstance() : DataRepository\l+ generateRandomID(int) : String\l+ generateRandom10DigitID() : String\l+ WalkFileSystemTree(InventoryManager) : void\l+ WalkFileSystemTree(CustomerManager) : void\l+ WalkFileSystemTree(TransactionManager) : void\l+ mapJsonToObjectList(String, Class\<T\>) : List\<T\>\l}", style=filled, fillcolor=lavender];
// Exception Classes
InvalidArtOperationException [label="{InvalidArtOperationException|+ InvalidArtOperationException(String)\l+ InvalidArtOperationException(String, Throwable)\l+ InvalidArtOperationException(Throwable)\l}", style=filled, fillcolor=pink];
InvalidRecordDataException [label="{InvalidRecordDataException|+ InvalidRecordDataException(String)\l+ InvalidRecordDataException(String, Throwable)\l+ InvalidRecordDataException(Throwable)\l}", style=filled, fillcolor=pink];
InvalidTransactionException [label="{InvalidTransactionException|+ InvalidTransactionException(String)\l+ InvalidTransactionException(String, Throwable)\l+ InvalidTransactionException(Throwable)\l}", style=filled, fillcolor=pink];
InvalidTransOperationException [label="{InvalidTransOperationException|+ InvalidTransOperationException(String)\l+ InvalidTransOperationException(String, Throwable)\l+ InvalidTransOperationException(Throwable)\l}", style=filled, fillcolor=pink];
// Inheritance relationships
InventoryPiece -> Drawing [dir=back, arrowtail=empty, label="extends"];
InventoryPiece -> Painting [dir=back, arrowtail=empty, label="extends"];
InventoryPiece -> Print [dir=back, arrowtail=empty, label="extends"];
InventoryPiece -> Sculpture [dir=back, arrowtail=empty, label="extends"];
// Collection inheritance
InventoryList -> InventoryPiece [arrowhead=diamond, label="contains *"];
CustomerList -> Customer [arrowhead=diamond, label="contains *"];
TransactionList -> Transaction [arrowhead=diamond, label="contains *"];
// Composition relationships
Customer -> Address [arrowhead=diamond, label="mailing"];
Transaction -> Address [arrowhead=diamond, label="shipToAddress"];
Transaction -> InventoryList [arrowhead=diamond, label="customerInventoryList"];
// Manager aggregations
InventoryManager -> InventoryList [arrowhead=diamond, label="INVENTORY"];
CustomerManager -> CustomerList [arrowhead=diamond, label="CUSTOMERS"];
TransactionManager -> TransactionList [arrowhead=diamond, label="TRANSACTIONS"];
// Dependencies
InventoryPiece -> InventoryType [style=dashed, arrowhead=open, label="uses"];
CustomerManager -> InvalidRecordDataException [style=dashed, arrowhead=open, label="throws"];
TransactionManager -> TransactionOperationEnum [style=dashed, arrowhead=open, label="uses"];
InventoryManager -> DataRepository [style=dashed, arrowhead=open, label="uses"];
CustomerManager -> DataRepository [style=dashed, arrowhead=open, label="uses"];
TransactionManager -> DataRepository [style=dashed, arrowhead=open, label="uses"];
InventoryPiece -> DataRepository [style=dashed, arrowhead=open, label="uses"];
TransactionManager -> Customer [style=dashed, arrowhead=open, label="uses"];
TransactionManager -> InventoryList [style=dashed, arrowhead=open, label="uses"];
DataRepository -> InventoryPiece [style=dashed, arrowhead=open, label="serializes"];
}