From 4c3f6ebe82e24f38dbe30840c830b22d2a0cbee6 Mon Sep 17 00:00:00 2001
From: Shan Ruhhammer <sr-224999@hs-weingarten.de>
Date: Sun, 25 Jun 2023 03:04:56 +0200
Subject: [PATCH] #11 Added supporting class and exception

---
 .../exception/InvalidCatalogueException.java  | 27 ++++++++++++++++
 .../de/rwu/easydrop/model/ProductPair.java    | 31 +++++++++++++++++++
 2 files changed, 58 insertions(+)
 create mode 100644 src/main/java/de/rwu/easydrop/exception/InvalidCatalogueException.java
 create mode 100644 src/main/java/de/rwu/easydrop/model/ProductPair.java

diff --git a/src/main/java/de/rwu/easydrop/exception/InvalidCatalogueException.java b/src/main/java/de/rwu/easydrop/exception/InvalidCatalogueException.java
new file mode 100644
index 0000000..69e582a
--- /dev/null
+++ b/src/main/java/de/rwu/easydrop/exception/InvalidCatalogueException.java
@@ -0,0 +1,27 @@
+package de.rwu.easydrop.exception;
+
+/**
+ * Exception that signifies the data of a Product are invalid.
+ *
+ * @since 0.3.0
+ */
+public class InvalidCatalogueException extends RuntimeException {
+    /**
+     * Throws an exception that signifies the data of a Product are invalid.
+     *
+     * @param message
+     */
+    public InvalidCatalogueException(final String message) {
+        super(message);
+    }
+
+    /**
+     * Throws an exception that signifies the data of a Product are invalid.
+     *
+     * @param message
+     * @param cause
+     */
+    public InvalidCatalogueException(final String message, final Throwable cause) {
+        super(message, cause);
+    }
+}
diff --git a/src/main/java/de/rwu/easydrop/model/ProductPair.java b/src/main/java/de/rwu/easydrop/model/ProductPair.java
new file mode 100644
index 0000000..70140c0
--- /dev/null
+++ b/src/main/java/de/rwu/easydrop/model/ProductPair.java
@@ -0,0 +1,31 @@
+package de.rwu.easydrop.model;
+
+import lombok.Data;
+
+/**
+ * Associates two related Products to one another.
+ *
+ * @since 0.3.0
+ */
+@Data
+public class ProductPair {
+    /**
+     * The first product.
+     */
+    private final Product product1;
+    /**
+     * The second product.
+     */
+    private final Product product2;
+
+    /**
+     * Constructs a Product Pair.
+     *
+     * @param a First product
+     * @param b Second product
+     */
+    public ProductPair(final Product a, final Product b) {
+        this.product1 = a;
+        this.product2 = b;
+    }
+}