1 files changed, 75 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/eval/MemorylessEvaluatorNode.java b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/eval/MemorylessEvaluatorNode.java
new file mode 100644
index 00000000..8928645c
--- /dev/null
+++ b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/eval/MemorylessEvaluatorNode.java
@@ -0,0 +1,75 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2013, Bergmann Gabor, Istvan Rath 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.eval;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Map.Entry;
+
+import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
+import tools.refinery.viatra.runtime.matchers.util.CollectionsFactory;
+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;
+
+/**
+ * @author Bergmann Gabor
+ *
+ */
+public class MemorylessEvaluatorNode extends AbstractEvaluatorNode {
+
+    /**
+     * @since 1.5
+     */
+    public MemorylessEvaluatorNode(final ReteContainer reteContainer, final EvaluatorCore core) {
+        super(reteContainer, core);
+    }
+
+    @Override
+    public void pullInto(final Collection<Tuple> collector, final boolean flush) {
+        final Collection<Tuple> parentTuples = new ArrayList<Tuple>();
+        propagatePullInto(parentTuples, flush);
+        for (final Tuple parentTuple : parentTuples) {
+            final Iterable<Tuple> output = core.performEvaluation(parentTuple);
+            if (output != null) {
+                final Iterator<Tuple> itr = output.iterator();
+                while (itr.hasNext()) {
+                    collector.add(itr.next());
+                }
+            }
+        }
+    }
+
+    @Override
+    public void pullIntoWithTimeline(final Map<Tuple, Timeline<Timestamp>> collector, final boolean flush) {
+        final Map<Tuple, Timeline<Timestamp>> parentTuples = CollectionsFactory.createMap();
+        propagatePullIntoWithTimestamp(parentTuples, flush);
+        for (final Entry<Tuple, Timeline<Timestamp>> entry : parentTuples.entrySet()) {
+            final Iterable<Tuple> output = core.performEvaluation(entry.getKey());
+            if (output != null) {
+                final Iterator<Tuple> itr = output.iterator();
+                while (itr.hasNext()) {
+                    collector.put(itr.next(), entry.getValue());
+                }
+            }
+        }
+    }
+
+    @Override
+    public void update(final Direction direction, final Tuple input, final Timestamp timestamp) {
+        final Iterable<Tuple> output = core.performEvaluation(input);
+        if (output != null) {
+            propagateIterableUpdate(direction, output, timestamp);
+        }
+    }
+
+}