create liquidbase sql for the Reservation and the Reservation entity …

…itself

src/main/java/com/zufar/onlinestore/reservation/dto/ReservationDto.java

@@ -0,0 +1,12 @@
+package com.zufar.onlinestore.reservation.dto;
+
+
+import java.time.LocalDateTime;
+
+public record ReservationDto(
+        int reservationId,
+        int productId,
+        int reservedQuantity,
+        LocalDateTime createdAt,
+        String reservationStatus
+) {}

src/main/java/com/zufar/onlinestore/reservation/entity/Reservation.java

@@ -0,0 +1,17 @@
+package com.zufar.onlinestore.reservation.entity;
+
+import lombok.Builder;
+import org.springframework.data.annotation.Id;
+
+import java.time.LocalDateTime;
+
+@Builder
+public record Reservation(
+    @Id
+    int reservationId,
+    int productId,
+    int reservedQuantity,
+    LocalDateTime createdAt,
+    String reservationStatus
+) {}
+

src/main/resources/db/changelog/1.1.sql

@@ -0,0 +1,10 @@
+--changeset Alex Zarubin:1
+CREATE TABLE reservation (
+                             reservation_id UUID NOT NULL,
+                             product_id UUID NOT NULL,
+                             reserved_quantity INT NOT NULL CHECK(reserved_amount > 0),
+                             created_at TIMESTAMP NOT NULL DEFAULT NOW(),
+                             reservation_status VARCHAR(32) NOT NULL,
+                             PRIMARY KEY (reservation_id)
+);
+CREATE UNIQUE INDEX uniq_reservation ON reservation (reservation_id, product_id);

src/main/resources/db/changelog/db.changelog-master.xml

@@ -6,5 +6,6 @@
                         http://www.liquibase.org/xml/ns/dbchangelog/dbchangelog-3.8.xsd">
 
     <include file="classpath:db/changelog/db.changelog-1.0.xml" />
+    <include file="1.1.sql" relativeToChangelogFile="true" />
 
 </databaseChangeLog>