From 938427dace1a9622a55e3f81845fb82af697d001 Mon Sep 17 00:00:00 2001
From: Kamal Wickramanayake <kamal@inbox.lk>
Date: Fri, 20 Mar 2026 22:48:14 +0530
Subject: Added 11-point-of-sale sample application

---
 oop/11-point-of-sale/docs/03-design.uxf | 71 +++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 oop/11-point-of-sale/docs/03-design.uxf

(limited to 'oop/11-point-of-sale/docs/03-design.uxf')

diff --git a/oop/11-point-of-sale/docs/03-design.uxf b/oop/11-point-of-sale/docs/03-design.uxf
new file mode 100644
index 0000000..8eaee19
--- /dev/null
+++ b/oop/11-point-of-sale/docs/03-design.uxf
@@ -0,0 +1,71 @@
+<diagram program="umletino" version="15.1"><zoom_level>10</zoom_level><help_text>Space for diagram notes</help_text><element><id>UMLClass</id><coordinates><x>880</x><y>470</y><w>130</w><h>70</h></coordinates><panel_attributes>Item
+--
+-id: String
+-name: String
+-unitPrice: BigDecimal</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>880</x><y>340</y><w>130</w><h>100</h></coordinates><panel_attributes>LineItem
+--
+itemId: String
+itemName: String
+quantity: int
+unitPrice: BigDecimal
+</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>940</x><y>250</y><w>40</w><h>110</h></coordinates><panel_attributes>lt=&lt;&lt;&lt;&lt;&lt;-
+m2=*</panel_attributes><additional_attributes>10;10;10;90</additional_attributes></element><element><id>UMLClass</id><coordinates><x>860</x><y>140</y><w>180</w><h>120</h></coordinates><panel_attributes>Bill
+--
+id: int
+total: BigDecimal
+tax: BigDecimal
+cashByCustomer: BigDecimal
+balance: BigDecimal
+--
+addLineItem(lineItem: LineItem)</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>900</x><y>0</y><w>100</w><h>60</h></coordinates><panel_attributes>Cashier
+--
+name: String
+id: String</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>940</x><y>50</y><w>30</w><h>110</h></coordinates><panel_attributes>lt=&lt;-</panel_attributes><additional_attributes>10;10;10;90</additional_attributes></element><element><id>UMLClass</id><coordinates><x>270</x><y>20</y><w>100</w><h>60</h></coordinates><panel_attributes>TextUI
+--
+--
+-printBill()
++start()</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>480</x><y>20</y><w>250</w><h>140</h></coordinates><panel_attributes>&lt;&lt;interface&gt;&gt;
+PointOfSale
+--
+--
+createNewBill(): Bill
+addLineItem(itemId: String, quantity: int)
+cashByCustomer(amount: String)
+searchItems(q: String): ListsavBill()
+saveBill()
+finishBillSession()</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>360</x><y>30</y><w>140</w><h>30</h></coordinates><panel_attributes>lt=&lt;-</panel_attributes><additional_attributes>120;10;10;10</additional_attributes></element><element><id>UMLClass</id><coordinates><x>490</x><y>420</y><w>240</w><h>120</h></coordinates><panel_attributes>&lt;&lt;interface&gt;&gt;
+BillManager
+--
+--
+createNewBill():Bill
+addLineItem(itemId: String, quantity: int)
+cashByCustomer(amount: String)
+saveBill()
+finishBillSession()</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>600</x><y>320</y><w>30</w><h>120</h></coordinates><panel_attributes>lt=&lt;-</panel_attributes><additional_attributes>10;100;10;10</additional_attributes></element><element><id>UMLClass</id><coordinates><x>890</x><y>640</y><w>100</w><h>30</h></coordinates><panel_attributes>TaxCalculator</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>0</x><y>370</y><w>370</w><h>100</h></coordinates><panel_attributes>&lt;&lt;interface&gt;&gt;
+ItemManager
+--
+--
+createItem(id: String, name: String, unitPrice: BigDecimal): Item
+findById(id: String): Item
+searchItems(q: String): List</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>180</x><y>250</y><w>320</w><h>140</h></coordinates><panel_attributes>lt=&lt;-</panel_attributes><additional_attributes>10;120;10;10;300;10</additional_attributes></element><element><id>UMLClass</id><coordinates><x>480</x><y>210</y><w>250</w><h>120</h></coordinates><panel_attributes>PointOfSaleImpl
+--
+--
+createNewBill(): Bill
+addLineItem(itemId: String, quantity: int)
+cashByCustomer(amount: String)
+searchItems(q: String): List
+saveBill()
+finishBillSession()</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>600</x><y>150</y><w>30</w><h>80</h></coordinates><panel_attributes>lt=&lt;&lt;.</panel_attributes><additional_attributes>10;10;10;60</additional_attributes></element><element><id>UMLClass</id><coordinates><x>490</x><y>600</y><w>240</w><h>120</h></coordinates><panel_attributes>BillManagerImpl
+--
+- currentBill:Bill
+--
+createNewBill():Bill
+addLineItem(itemId: String, quantity: int)
+cashByCustomer(amount: String)
+saveBill()
+finishBillSession()</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>600</x><y>530</y><w>30</w><h>90</h></coordinates><panel_attributes>lt=&lt;&lt;.</panel_attributes><additional_attributes>10;10;10;70</additional_attributes></element><element><id>UMLClass</id><coordinates><x>0</x><y>500</y><w>370</w><h>80</h></coordinates><panel_attributes>ItemManagerImpl
+--
+--
+createItem(id: String, name: String, unitPrice: BigDecimal)
+findById(id: String): Item
+searchItems(q: String): List</panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>180</x><y>460</y><w>30</w><h>60</h></coordinates><panel_attributes>lt=&lt;&lt;.</panel_attributes><additional_attributes>10;10;10;40</additional_attributes></element><element><id>Relation</id><coordinates><x>364</x><y>380</y><w>190</w><h>60</h></coordinates><panel_attributes>lt=&lt;-</panel_attributes><additional_attributes>10;10;170;10;170;40</additional_attributes></element></diagram>
\ No newline at end of file
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