chore: include initial project code

Signed-off-by: Otavio Santana <otaviopolianasantana@gmail.com>

src/main/java/com/otaviojava/demos/ddd/Category.java

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+package com.otaviojava.demos.ddd;
+
+import jakarta.nosql.Column;
+import jakarta.nosql.Embeddable;
+
+@Embeddable(Embeddable.EmbeddableType.GROUPING)
+public record Category(@Column String name, @Column String description) {
+}

src/main/java/com/otaviojava/demos/ddd/Manufacturer.java

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+package com.otaviojava.demos.ddd;
+
+import jakarta.nosql.Column;
+import jakarta.nosql.Embeddable;
+
+
+@Embeddable(Embeddable.EmbeddableType.GROUPING)
+public record Manufacturer(@Column String name, @Column String address, @Column String contactNumber) {
+
+}

src/main/java/com/otaviojava/demos/ddd/Product.java

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+package com.otaviojava.demos.ddd;
+
+import jakarta.json.bind.annotation.JsonbVisibility;
+import jakarta.nosql.Column;
+import jakarta.nosql.Convert;
+import jakarta.nosql.Entity;
+import jakarta.nosql.Id;
+import org.eclipse.jnosql.databases.mongodb.mapping.ObjectIdConverter;
+import org.soujava.samples.mongodb.products.infra.FieldVisibilityStrategy;
+
+import java.util.List;
+import java.util.Objects;
+import java.util.Set;
+
+@Entity
+@JsonbVisibility(FieldVisibilityStrategy.class)
+public class Product {
+
+    @Id
+    @Convert(ObjectIdConverter.class)
+    private String id;
+
+    @Column
+    private String name;
+
+    @Column
+    private Manufacturer manufacturer;
+
+    @Column
+    private List<String> tags;
+
+    @Column
+    private Set<Category> categories;
+
+    @Override
+    public boolean equals(Object o) {
+        if (o == null || getClass() != o.getClass()) {
+            return false;
+        }
+        Product product = (Product) o;
+        return Objects.equals(id, product.id);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hashCode(id);
+    }
+
+    @Override
+    public String toString() {
+        return "Product{" +
+                "id='" + id + '\'' +
+                ", name='" + name + '\'' +
+                ", manufacturer=" + manufacturer +
+                ", tags=" + tags +
+                ", categories=" + categories +
+                '}';
+    }
+}

src/main/java/com/otaviojava/demos/ddd/ProductRepository.java

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+package com.otaviojava.demos.ddd;
+
+import jakarta.data.repository.BasicRepository;
+import jakarta.data.repository.Repository;
+
+@Repository
+public interface ProductRepository extends BasicRepository<Product, String> {
+}