03 - Validation: Validate Recipes and Ingredients

pom.xml

@@ -51,6 +51,10 @@
       <groupId>io.quarkus</groupId>
       <artifactId>quarkus-rest</artifactId>
     </dependency>
+    <dependency>
+      <groupId>io.quarkus</groupId>
+      <artifactId>quarkus-hibernate-validator</artifactId>
+    </dependency>
     <dependency>
       <groupId>io.quarkus</groupId>
       <artifactId>quarkus-junit</artifactId>

src/main/java/de/schulung/quarkus/recipes/Ingredient.java

@@ -1,5 +1,9 @@
 package de.schulung.quarkus.recipes;
 
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Positive;
+import jakarta.validation.constraints.Size;
+
 import lombok.Getter;
 import lombok.Setter;
 
@@ -10,14 +14,18 @@ public class Ingredient {
   /**
    * The ingredient name.
    */
+  @NotNull
+  @Size(min = 1, max = 100)
   private String name;
   /**
    * The quantity of the ingredient.
    */
+  @Positive
   private double quantity;
   /**
    * The unit of the ingredient.
    */
+  @NotNull
   private IngredientUnit unit;
 
 }

src/main/java/de/schulung/quarkus/recipes/Recipe.java

@@ -1,7 +1,11 @@
 package de.schulung.quarkus.recipes;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-
+import jakarta.validation.Valid;
+import jakarta.validation.constraints.Min;
+import jakarta.validation.constraints.NotNull;
+import jakarta.validation.constraints.Pattern;
+import jakarta.validation.constraints.Size;
 import lombok.Getter;
 import lombok.Setter;
 
@@ -20,14 +24,19 @@ public class Recipe {
   /**
    * The recipe name.
    */
+  @NotNull
+  @Size(min = 1, max = 100)
   private String name;
   /**
    * URL of the recipe image, absolute or relative.
    */
+  @Size(max = 255)
+  @Pattern(regexp = "^(/|https?://).+")
   private String img;
   /**
    * The number of servings.
    */
+  @Min(1)
   private int servings;
   /**
    * The last edited timestamp (read-only, assigned by the server).
@@ -37,6 +46,7 @@ public class Recipe {
   /**
    * Preparation time in minutes.
    */
+  @Min(1)
   private int duration;
   /**
    * Difficulty level of the recipe.
@@ -45,10 +55,14 @@ public class Recipe {
   /**
    * List of ingredients.
    */
-  private List<Ingredient> ingredients;
+  @NotNull
+  @Size(max = 100)
+  private List<@Valid @NotNull Ingredient> ingredients;
   /**
    * Preparation instructions.
    */
+  @NotNull
+  @Size(max = 2000)
   private String preparation;
 
 }

src/main/java/de/schulung/quarkus/recipes/RecipesResource.java

@@ -1,5 +1,6 @@
 package de.schulung.quarkus.recipes;
 
+import jakarta.validation.Valid;
 import jakarta.ws.rs.*;
 import jakarta.ws.rs.core.Context;
 import jakarta.ws.rs.core.MediaType;
@@ -26,6 +27,7 @@ public Collection<Recipe> getAllRecipes() {
 
   @POST
   public Response createRecipe(
+    @Valid
     Recipe recipe,
     @Context
     UriInfo uriInfo