From 33b1a76056616192831e147956aed1f47ee9086c Mon Sep 17 00:00:00 2001
From: Steven KERDUDOU <steven.kerdudou@kleegroup.com>
Date: Mon, 22 Jan 2024 18:22:53 +0100
Subject: [PATCH] [core] Add SimpleEnumDefinitionProvider

---
 .../SimpleEnumDefinitionProvider.java         | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 vertigo-core/src/main/java/io/vertigo/core/node/definition/SimpleEnumDefinitionProvider.java

diff --git a/vertigo-core/src/main/java/io/vertigo/core/node/definition/SimpleEnumDefinitionProvider.java b/vertigo-core/src/main/java/io/vertigo/core/node/definition/SimpleEnumDefinitionProvider.java
new file mode 100644
index 000000000..e19154050
--- /dev/null
+++ b/vertigo-core/src/main/java/io/vertigo/core/node/definition/SimpleEnumDefinitionProvider.java
@@ -0,0 +1,37 @@
+package io.vertigo.core.node.definition;
+
+import java.util.Arrays;
+import java.util.List;
+
+/**
+ * Provides a list of definitions through an enum.
+ *
+ * @author skerdudou
+ */
+public interface SimpleEnumDefinitionProvider<D extends Definition> extends DefinitionProvider {
+
+	/**
+	 * Return a list of definitions with a set of already known definitions
+	 *
+	 * @param definitionSpace the actual definitionSpace
+	 * @return the list of new definition to register
+	 */
+	@Override
+	default List<DefinitionSupplier> get(final DefinitionSpace definitionSpace) {
+		final var enumValues = getEnumClass().getEnumConstants();
+
+		return Arrays.stream(enumValues)
+				.map(v -> (DefinitionSupplier) v::buildDefinition)
+				.toList();
+	}
+
+	Class<? extends EnumDefinition<D, ? extends Enum<?>>> getEnumClass();
+
+	static interface EnumDefinition<D, T extends Enum<T>> {
+
+		D buildDefinition(DefinitionSpace definitionSpace);
+
+		D get();
+
+	}
+}