remove TagsToFile

Remove one layer of abstraction by moving the code into the DataStore.

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

@@ -0,0 +1,18 @@
+package org.lucares.utils;
+
+import java.time.OffsetDateTime;
+import java.time.ZoneOffset;
+
+public class DateUtils {
+
+	public static OffsetDateTime getDate(final int year, final int month, final int day, final int hour,
+			final int minute, final int second) {
+
+		final OffsetDateTime result = OffsetDateTime.of(year, month, day, hour, minute, second, 0, ZoneOffset.UTC);
+		return result;
+	}
+
+	public static OffsetDateTime nowInUtc() {
+		return OffsetDateTime.now(ZoneOffset.UTC);
+	}
+}

pdb-utils/src/main/java/org/lucares/utils/cache/HotEntryCache.java

@@ -77,11 +77,16 @@ public class HotEntryCache<K, V> {
 	 *                        inserted
 	 * @return the newly inserted or existing value, or null if
 	 *         {@code mappingFunction} returned {@code null}
-	 * @throws ExecutionException
+	 * @throws RuntimeExcecutionException re-throws any exception thrown during the
+	 *                                    execution of {@code supplier} wrapped in a
+	 *                                    {@link RuntimeExcecutionException}
 	 */
-	public V putIfAbsent(final K key, final Callable<V> mappingFunction) throws ExecutionException {
-
-		return cache.get(key, mappingFunction);
+	public V putIfAbsent(final K key, final Callable<V> supplier) {
+		try {
+			return cache.get(key, supplier);
+		} catch (final ExecutionException e) {
+			throw new RuntimeExcecutionException(e);
+		}
 	}
 
 	public void remove(final K key) {

pdb-utils/src/main/java/org/lucares/utils/cache/RuntimeExcecutionException.java

@@ -0,0 +1,13 @@
+package org.lucares.utils.cache;
+
+import java.util.concurrent.ExecutionException;
+
+public class RuntimeExcecutionException extends RuntimeException {
+
+	private static final long serialVersionUID = -3626851728980513527L;
+
+	public RuntimeExcecutionException(final ExecutionException e) {
+		super(e);
+	}
+
+}