1 files changed, 108 insertions, 0 deletions

diff --git a/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/network/BaseNode.java b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/network/BaseNode.java
new file mode 100644
index 00000000..2469d6bd
--- /dev/null
+++ b/subprojects/viatra-runtime-rete/src/main/java/tools/refinery/viatra/runtime/rete/network/BaseNode.java
@@ -0,0 +1,108 @@
+/*******************************************************************************
+ * Copyright (c) 2010-2012, 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.network;
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.TreeSet;
+
+import tools.refinery.viatra.runtime.rete.traceability.PatternTraceInfo;
+import tools.refinery.viatra.runtime.rete.traceability.TraceInfo;
+
+/**
+ * Base implementation for a Rete node.
+ * 
+ * @author Bergmann Gabor
+ * 
+ */
+public abstract class BaseNode implements Node {
+
+    protected ReteContainer reteContainer;
+    protected long nodeId;
+    protected Object tag;
+    protected Set<TraceInfo> traceInfos;
+
+    /**
+     * @param reteContainer
+     *            the container to create this node in
+     */
+    public BaseNode(ReteContainer reteContainer) {
+        super();
+        this.reteContainer = reteContainer;
+        this.nodeId = reteContainer.registerNode(this);
+        this.traceInfos = new HashSet<TraceInfo>();
+    }
+
+    @Override
+    public String toString() {
+        if (tag != null)
+            return toStringCore() + "->" + getTraceInfoPatternsEnumerated() + "{" + tag.toString() + "}";
+        else
+            return toStringCore() + "->" + getTraceInfoPatternsEnumerated();
+    }
+
+    /**
+     * clients should override this to append before the tag / trace indicators
+     */
+    protected String toStringCore() {
+        return "[" + nodeId + "]" + getClass().getSimpleName();
+    }
+
+    @Override
+    public ReteContainer getContainer() {
+        return reteContainer;
+    }
+
+    @Override
+    public long getNodeId() {
+        return nodeId;
+    }
+
+    @Override
+    public Object getTag() {
+        return tag;
+    }
+
+    @Override
+    public void setTag(Object tag) {
+        this.tag = tag;
+    }
+        
+    @Override
+    public Set<TraceInfo> getTraceInfos() {
+        return Collections.unmodifiableSet(traceInfos);
+    }
+    
+    @Override
+    public void assignTraceInfo(TraceInfo traceInfo) {
+        traceInfos.add(traceInfo);
+        traceInfo.assignNode(this);
+    }
+    
+    @Override
+    public void acceptPropagatedTraceInfo(TraceInfo traceInfo) {
+        assignTraceInfo(traceInfo);
+    }
+    
+    /**
+     * Descendants should use this in e.g. logging
+     */
+    protected String getTraceInfoPatternsEnumerated() {
+        TreeSet<String> patternNames = new TreeSet<String>();
+        for (TraceInfo trInfo : traceInfos) {
+            if (trInfo instanceof PatternTraceInfo) {
+                final String pName = ((PatternTraceInfo) trInfo).getPatternName();
+                patternNames.add(pName);
+            }
+        }
+        return patternNames.toString();
+    }
+
+}
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