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diff --git a/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/matcher/TimelyConfiguration.java b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/matcher/TimelyConfiguration.java
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+++ b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/matcher/TimelyConfiguration.java
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+/*******************************************************************************
+ * Copyright (c) 2010-2019, Tamas Szabo, itemis AG, Gabor Bergmann, IncQuery Labs Ltd.
+ * 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.matcher;
+
+/**
+ * Configuration of timely evaluation.
+ * 
+ * @author Tamas Szabo
+ * @since 2.4
+ */
+public class TimelyConfiguration {
+
+    private final AggregatorArchitecture aggregatorArchitecture;
+    private final TimelineRepresentation timelineRepresentation;
+
+    public TimelyConfiguration(final TimelineRepresentation timelineRepresentation,
+            final AggregatorArchitecture aggregatorArchitecture) {
+        this.aggregatorArchitecture = aggregatorArchitecture;
+        this.timelineRepresentation = timelineRepresentation;
+    }
+
+    public AggregatorArchitecture getAggregatorArchitecture() {
+        return aggregatorArchitecture;
+    }
+
+    public TimelineRepresentation getTimelineRepresentation() {
+        return timelineRepresentation;
+    }
+
+    public enum AggregatorArchitecture {
+        /**
+         * Aggregands are copied over from lower timestamps to higher timestamps.  
+         */
+        PARALLEL,
+        
+        /**
+         * Aggregands are only present at the timestamp where they are inserted at. 
+         * Only aggregate results are pushed towards higher timestamps during folding. 
+         */
+        SEQUENTIAL
+    }
+
+    public enum TimelineRepresentation {
+        /**
+         * Only the first moment (timestamp) of appearance is maintained per tuple.  
+         */
+        FIRST_ONLY,
+        
+        /**
+         * Complete timeline (series of appearance & disappearance) is maintained per tuple.  
+         */
+        FAITHFUL
+    }
+
+}