Direct and synchronization-free access to Layer0 resource class for DB

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

diff --git a/bundles/org.simantics.db/src/org/simantics/db/ResourceLocator.java b/bundles/org.simantics.db/src/org/simantics/db/ResourceLocator.java
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+/*******************************************************************************
+ * Copyright (c) 2020 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;
+
+/**
+ * @author Tuukka Lehtonen
+ * @since 1.43.0
+ */
+public interface ResourceLocator {
+
+    /**
+     * Layer0 is an integral part of Simantics database modelling and for performance
+     * reasons deserves simplest possible access to its resource class.
+     * 
+     * @return returns the internally cached
+     *         <code>org.simantics.layer0.Layer0</code> instance
+     */
+    public <T> T l0();
+
+}