feature: Embedded value pattern (#2384)

* Emdedded value design pattern

* Adding suggested changes

* Adding module in parent POM

* Fixed checkstyle errors

embedded-value/etc/embedded-value.urm.puml

@@ -0,0 +1,79 @@
+@startuml
+package com.iluwatar.embedded.value {
+  class App {
+    - LOGGER : Logger {static}
+    + App()
+    + main(args : String[]) {static}
+  }
+  class DataSource {
+    - LOGGER : Logger {static}
+    - conn : Connection
+    - createschema : Statement
+    - deleteschema : Statement
+    - getschema : Statement
+    - insertIntoOrders : PreparedStatement
+    - queryOrders : Statement
+    - queyOrderByID : PreparedStatement
+    - removeorder : PreparedStatement
+    + DataSource()
+    + createSchema() : boolean
+    + deleteSchema() : boolean
+    + getSchema() : String
+    + insertOrder(order : Order) : boolean
+    + queryOrder(id : int) : Order
+    + queryOrders() : Stream<Order>
+    + removeOrder(id : int)
+  }
+  ~interface DataSourceInterface {
+    + CREATE_SCHEMA : String {static}
+    + DELETE_SCHEMA : String {static}
+    + GET_SCHEMA : String {static}
+    + INSERT_ORDER : String {static}
+    + JDBC_URL : String {static}
+    + QUERY_ORDER : String {static}
+    + QUERY_ORDERS : String {static}
+    + REMOVE_ORDER : String {static}
+    + createSchema() : boolean {abstract}
+    + deleteSchema() : boolean {abstract}
+    + getSchema() : String {abstract}
+    + insertOrder(Order) : boolean {abstract}
+    + queryOrder(int) : Order {abstract}
+    + queryOrders() : Stream<Order> {abstract}
+    + removeOrder(int) {abstract}
+  }
+  class Order {
+    - id : int
+    - item : String
+    - orderedBy : String
+    - shippingAddress : ShippingAddress
+    + Order()
+    + Order(id : int, item : String, orderedBy : String, shippingAddress : ShippingAddress)
+    + Order(item : String, orderedBy : String, shippingAddress : ShippingAddress)
+    + getId() : int
+    + getItem() : String
+    + getOrderedBy() : String
+    + getShippingAddress() : ShippingAddress
+    + setId(id : int)
+    + setItem(item : String)
+    + setOrderedBy(orderedBy : String)
+    + setShippingAddress(shippingAddress : ShippingAddress)
+    + toString() : String
+  }
+  class ShippingAddress {
+    - city : String
+    - pincode : String
+    - state : String
+    + ShippingAddress()
+    + ShippingAddress(city : String, state : String, pincode : String)
+    + getCity() : String
+    + getPincode() : String
+    + getState() : String
+    + setCity(city : String)
+    + setPincode(pincode : String)
+    + setState(state : String)
+    + toString() : String
+  }
+}
+Order -->  "-shippingAddress" ShippingAddress
+DataSource ..|> DataSourceInterface 
+@enduml