Merge "General event listening interface for DB and purge events."

[simantics/platform.git] / bundles / org.simantics.db / src / org / simantics / db / service / EventSupport.java

diff --git a/bundles/org.simantics.db/src/org/simantics/db/service/EventSupport.java b/bundles/org.simantics.db/src/org/simantics/db/service/EventSupport.java
new file mode 100644 (file)
index 0000000..7d7995b
--- /dev/null
+++ b/bundles/org.simantics.db/src/org/simantics/db/service/EventSupport.java
@@ -0,0 +1,37 @@
+/*******************************************************************************
+ * 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
+ *******************************************************************************/
+package org.simantics.db.service;
+
+/**
+ * Interface for listening DB events.
+ * 
+ * Note: At the moment, only "purge" is supported.
+ * 
+ * @author luukkainen
+ *
+ */
+public interface EventSupport {
+    
+    public void addListener(EventListener l);
+    
+    public void removeListener(EventListener l);
+
+    
+    public interface EventListener extends java.util.EventListener {
+        /**
+         * 
+         * @param type Type of the event.
+         * @param data Data related to the event, may be null.
+         */
+        public void event(String type, Object data);
+    }
+}