chore: add simple surgical process concept

src/main/kotlin/entity/process/SurgicalProcess.kt

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2023. Smart Operating Block
+ *
+ * Use of this source code is governed by an MIT-style
+ * license that can be found in the LICENSE file or at
+ * https://opensource.org/licenses/MIT.
+ */
+
+package entity.process
+
+/**
+ * It describes a surgical process that is happened inside the Operating Block.
+ * Each process is identified by its [id] and it has a [type] that describes it.
+ */
+data class SurgicalProcess(
+ val id: SurgicalProcessID,
+ val type: String,
+) {
+ override fun equals(other: Any?): Boolean = when {
+ other === this -> true
+ other is SurgicalProcess -> this.id == other.id
+ else -> false
+ }
+
+ override fun hashCode(): Int = this.id.hashCode()
+}
+
+/**
+ * Identification of a [SurgicalProcess].
+ * @param[value] the id.
+ */
+data class SurgicalProcessID(val value: String) {
+ init {
+ // Constructor validation: The id must not be empty
+ require(this.value.isNotEmpty())
+ }
+}