add interval splitting for bar charts

pdb-utils/src/main/java/org/lucares/utils/EndOfInterval.java

@@ -0,0 +1,25 @@
+package org.lucares.utils;
+
+import java.time.temporal.ChronoUnit;
+import java.time.temporal.Temporal;
+import java.time.temporal.TemporalAdjuster;
+
+public class EndOfInterval implements TemporalAdjuster {
+
+    private final ChronoUnit unit;
+
+    public EndOfInterval(final ChronoUnit unit) {
+        this.unit = unit;
+    }
+
+    @Override
+    public Temporal adjustInto(final Temporal temporal) {
+        Temporal result = temporal;
+        final BeginningOfNextInterval beginningOfnextInterval = new BeginningOfNextInterval(unit);
+        result = result.with(beginningOfnextInterval);
+
+        result = result.minus(1, ChronoUnit.NANOS);
+        return result;
+    }
+
+}