1 files changed, 49 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/single/TransformerNode.java b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/single/TransformerNode.java
new file mode 100644
index 00000000..24750656
--- /dev/null
+++ b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/single/TransformerNode.java
@@ -0,0 +1,49 @@
+/*******************************************************************************
+ * Copyright (c) 2004-2008 Gabor Bergmann and Daniel Varro
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-v20.html.
+ * 
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+
+package tools.refinery.viatra.runtime.rete.single;
+
+import java.util.Collection;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
+import tools.refinery.viatra.runtime.matchers.util.Direction;
+import tools.refinery.viatra.runtime.matchers.util.timeline.Timeline;
+import tools.refinery.viatra.runtime.rete.network.ReteContainer;
+import tools.refinery.viatra.runtime.rete.network.communication.Timestamp;
+
+public abstract class TransformerNode extends SingleInputNode {
+
+    public TransformerNode(final ReteContainer reteContainer) {
+        super(reteContainer);
+    }
+
+    protected abstract Tuple transform(final Tuple input);
+
+    @Override
+    public void pullInto(final Collection<Tuple> collector, final boolean flush) {
+        for (Tuple ps : reteContainer.pullPropagatedContents(this, flush)) {
+            collector.add(transform(ps));
+        }
+    }
+    
+    @Override
+    public void pullIntoWithTimeline(final Map<Tuple, Timeline<Timestamp>> collector, final boolean flush) {
+        for (final Entry<Tuple, Timeline<Timestamp>> entry : reteContainer.pullPropagatedContentsWithTimestamp(this, flush).entrySet()) {
+            collector.put(transform(entry.getKey()), entry.getValue());
+        }
+    }
+
+    @Override
+    public void update(final Direction direction, final Tuple updateElement, final Timestamp timestamp) {
+        propagateUpdate(direction, transform(updateElement), timestamp);
+    }
+
+}