Support for linked lists in objmap2.

[simantics/platform.git] / bundles / org.simantics.objmap2 / src / org / simantics / objmap / graph / annotations / LinkedList.java

diff --git a/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/annotations/LinkedList.java b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/annotations/LinkedList.java
new file mode 100644 (file)
index 0000000..7018a39
--- /dev/null
+++ b/bundles/org.simantics.objmap2/src/org/simantics/objmap/graph/annotations/LinkedList.java
@@ -0,0 +1,40 @@
+package org.simantics.objmap.graph.annotations;
+
+/*******************************************************************************
+ * Copyright (c) 2019 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     Semantum oy - initial API and implementation
+ *******************************************************************************/
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.simantics.layer0.Layer0;
+import org.simantics.objmap.graph.annotations.meta.IsFieldRule;
+
+/**
+ * This field is a java.util.List or an array type that represents the contents
+ * of a Layer0.List entity that is the single object of the given relation. 
+ */
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.FIELD)
+@IsFieldRule
+public @interface LinkedList {
+       /**
+        * URI of a relation that has a Layer0.List as its object.
+        */
+       String value();
+       /**
+        * URI of the type of the list resource to create. 
+        */
+       String type() default Layer0.URIs.List;
+       boolean composition() default false;
+}