--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/artifacts/model/sq/StaticSQCacheKey.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,30 @@
+package org.dive4elements.river.artifacts.model.sq;
+
+import java.io.Serializable;
+
+
+public class StaticSQCacheKey
+implements Serializable
+{
+    public static final String CACHE_NAME = "static-sq-relation";
+
+    private String river;
+    private int measurementId;
+
+    public StaticSQCacheKey(String river, int measurementId) {
+        this.river = river;
+        this.measurementId = measurementId;
+    }
+
+    public int hashCode() {
+        return this.river.hashCode() | measurementId;
+    }
+
+    public boolean equals(Object other) {
+        if (!(other instanceof StaticSQCacheKey)) {
+            return false;
+        }
+        StaticSQCacheKey o = (StaticSQCacheKey) other;
+        return this.river == o.river && this.measurementId == o.measurementId;
+    }
+}