Added graph annotations. No attributes have been added yet.

src/main/java/org/springframework/persistence/graph/Graph.java

@@ -0,0 +1,37 @@
+package org.springframework.persistence.graph;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+public @interface Graph {
+
+	@Retention(RetentionPolicy.RUNTIME)
+	@Target(ElementType.TYPE)
+	public @interface Entity {
+		
+		@Retention(RetentionPolicy.RUNTIME)
+		@Target(ElementType.FIELD)
+		public @interface Relationship {	
+		}
+		
+	}
+
+	@Retention(RetentionPolicy.RUNTIME)
+	@Target(ElementType.TYPE)
+	public @interface Relationship {
+
+		@Retention(RetentionPolicy.RUNTIME)
+		@Target(ElementType.FIELD)
+		public @interface StartNode {
+		}
+
+		@Retention(RetentionPolicy.RUNTIME)
+		@Target(ElementType.FIELD)
+		public @interface EndNode {
+		}
+		
+	}
+	
+}