Add product classes into domain.

build.gradle.kts

@@ -18,6 +18,12 @@ repositories {
 	mavenCentral()
 }
 
+subprojects {
+	repositories {
+		mavenCentral()
+	}
+}
+
 dependencies {
 	implementation("org.springframework.boot:spring-boot-starter-web")
 	implementation("com.fasterxml.jackson.module:jackson-module-kotlin")

demo-domain/build.gradle.kts

@@ -0,0 +1,8 @@
+plugins {
+    kotlin("jvm")
+    id("java")
+}
+
+dependencies {
+    implementation(kotlin("stdlib"))
+}

demo-domain/src/main/kotlin/com/example/demo/domain/product/model/Product.kt

@@ -0,0 +1,9 @@
+package com.example.demo.domain.product.model
+
+import java.util.UUID
+
+data class Product(
+    val id: UUID,
+    val name: String,
+    val type: ProductType
+)

demo-domain/src/main/kotlin/com/example/demo/domain/product/model/ProductType.kt

@@ -0,0 +1,7 @@
+package com.example.demo.domain.product.model
+
+enum class ProductType {
+    SOLID,
+    LIQUID,
+    GAS
+}

demo-domain/src/main/kotlin/com/example/demo/domain/product/port/ProductPort.kt

@@ -0,0 +1,12 @@
+package com.example.demo.domain.product.port
+
+import com.example.demo.domain.product.model.Product
+import java.util.UUID
+
+interface ProductPort {
+    fun getById(id: UUID): Product?
+
+    fun getAll(): List<Product>
+
+    fun save(product: Product)
+}

demo-launcher/build.gradle.kts

@@ -5,10 +5,6 @@ plugins {
     id("java")
 }
 
-repositories {
-    mavenCentral()
-}
-
 dependencies {
     implementation(kotlin("stdlib"))
     implementation("org.springframework.boot:spring-boot-starter-web")

settings.gradle.kts

@@ -1,2 +1,3 @@
 rootProject.name = "demo"
+include(":demo-domain")
 include(":demo-launcher")