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diff --git a/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/cache/CachedProvider.java b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/cache/CachedProvider.java
new file mode 100644
index 000000000..9ccb0686b
--- /dev/null
+++ b/bundles/org.simantics.utils.datastructures/src/org/simantics/utils/datastructures/cache/CachedProvider.java
@@ -0,0 +1,57 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 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:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.utils.datastructures.cache;
+
+
+/**
+ * Caches the value provided by the back-end provider.
+ * <p>
+ * Cached version is equal to original in hashCode/equals wise.
+ * 
+ * @author Toni Kalajainen
+ */
+public class CachedProvider<V> implements IProvider<V> {
+
+    public static final <V> IProvider<V> cache(IProvider<V> provider)
+    {
+        if (provider instanceof CachedProvider<?>)
+            return provider;
+        return new CachedProvider<V>(provider);
+    }
+
+    IProvider<V> backendProvider;
+    V value;
+
+    CachedProvider(IProvider<V> orig)
+    {
+        this.backendProvider = orig;
+    }
+
+    @Override
+    public synchronized V get() throws ProvisionException {
+        if (value==null) {
+            value = backendProvider.get();
+        }
+        return value;
+    }
+
+    @Override
+    public int hashCode() {
+        return backendProvider.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        return backendProvider.equals(obj);
+    }
+
+}