1 files changed, 49 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/index/timely/TimelyMemoryNullIndexer.java b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/index/timely/TimelyMemoryNullIndexer.java
new file mode 100644
index 00000000..0386b006
--- /dev/null
+++ b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/index/timely/TimelyMemoryNullIndexer.java
@@ -0,0 +1,49 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2019, Tamas Szabo, 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.index.timely;
+
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
+
+import tools.refinery.viatra.runtime.matchers.tuple.Tuple;
+import tools.refinery.viatra.runtime.matchers.util.TimelyMemory;
+import tools.refinery.viatra.runtime.matchers.util.timeline.Timeline;
+import tools.refinery.viatra.runtime.rete.index.NullIndexer;
+import tools.refinery.viatra.runtime.rete.network.Receiver;
+import tools.refinery.viatra.runtime.rete.network.ReteContainer;
+import tools.refinery.viatra.runtime.rete.network.Supplier;
+import tools.refinery.viatra.runtime.rete.network.communication.Timestamp;
+
+public class TimelyMemoryNullIndexer extends NullIndexer {
+
+    protected final TimelyMemory<Timestamp> memory;
+
+    public TimelyMemoryNullIndexer(final ReteContainer reteContainer, final int tupleWidth,
+            final TimelyMemory<Timestamp> memory, final Supplier parent,
+            final Receiver activeNode, final List<ListenerSubscription> sharedSubscriptionList) {
+        super(reteContainer, tupleWidth, parent, activeNode, sharedSubscriptionList);
+        this.memory = memory;
+    }
+
+    @Override
+    public Map<Tuple, Timeline<Timestamp>> getTimeline(final Tuple signature) {
+        if (nullSignature.equals(signature)) {
+            return isEmpty() ? null : this.memory.asMap();
+        } else {
+            return null;
+        }
+    }
+    
+    @Override
+    protected Collection<Tuple> getTuples() {
+        return this.memory.getTuplesAtInfinity();
+    }
+
+}