1 files changed, 91 insertions, 0 deletions
diff --git a/extraplugins/qompass/designer/org.eclipse.papyrus.qompass.modellibs.core/src/org/eclipse/papyrus/qompass/modellibs/core/xtend/UMLChain.xtend b/extraplugins/qompass/designer/org.eclipse.papyrus.qompass.modellibs.core/src/org/eclipse/papyrus/qompass/modellibs/core/xtend/UMLChain.xtend
new file mode 100644
index 00000000000..05bf596b9a6
--- /dev/null
+++ b/extraplugins/qompass/designer/org.eclipse.papyrus.qompass.modellibs.core/src/org/eclipse/papyrus/qompass/modellibs/core/xtend/UMLChain.xtend
@@ -0,0 +1,91 @@
+/*******************************************************************************
+* Copyright (c) 2014 Zeligsoft (2009) Limited  and others.
+* 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
+*******************************************************************************/
+
+package org.eclipse.papyrus.qompass.modellibs.core.xtend
+
+import java.util.HashMap
+import java.util.List
+import java.util.Map
+import org.eclipse.uml2.uml.Behavior
+import org.eclipse.uml2.uml.Transition
+import org.eclipse.xtend.lib.annotations.Accessors
+
+/**
+ * A chain of state entry, exit and transition actions for a "flat"
+ * {@link Transition}.
+ *
+ * @author eposse
+ *
+ */
+class UMLChain {
+
+    @Accessors List<UMLAction> actions
+    @Accessors Transition owner
+
+	static Map<Transition, UMLChain> chains;
+
+    new () {
+        actions = newArrayList
+    }
+
+    new (List<UMLAction> actions) {
+        this.actions = newArrayList(actions) // We need this to be mutable.
+    }
+
+	def static void initChains() {
+		chains = new HashMap<Transition, UMLChain>();
+	}
+	
+	/**
+	 * Return the chain of behaviors associated with a transition
+	 * IF the chain does not exist yet, it will be created (and stored in a hash map) 
+	 * @param t
+	 * @return
+	 */
+	def static UMLChain chain(Transition t) {
+		var UMLChain chain = chains.get(t)
+		if (chain == null) {
+			chain = new UMLChain()
+			chain.setOwner(t)
+			chains.put(t, chain)
+		}
+		return chain
+	}
+
+    def append(UMLAction action) {
+        actions.add(action)
+        return this
+    }
+
+	def append(Behavior behavior) {
+		if (behavior != null) {
+	    	append(new UMLAction(behavior))
+	    }
+        return this
+    }
+
+    def prepend(UMLAction action) {
+        actions.add(0, action)
+        return this
+    }
+
+	def prepend(Behavior behavior) {
+	    prepend(new UMLAction(behavior))
+        return this
+    }
+
+    def getOwner() {
+        owner
+    }
+
+    def setOwner(Transition t) {
+       	owner = t
+       	// add transition effect to action list
+       	append(t.effect)
+    }
+}
+\ No newline at end of file