Created FeedStatusBlock.

javasrc/org/hd/d/statsHouse/feedHits/data/FeedStatusBlock.java

@@ -0,0 +1,35 @@
+/*
+Copyright (c) 2024, Damon Hart-Davis
+
+Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package org.hd.d.statsHouse.feedHits.data;
+
+import java.util.List;
+import java.util.Objects;
+
+/**Duration in days and ordered List of FeedStatus records, immutable.
+ * The day count must be strictly positive.
+ * <p>
+ * This makes a defensive immutable copy of the list to ensure record immutability.
+ */
+public record FeedStatusBlock(int nDays, List<FeedStatus> records)
+    {
+	public FeedStatusBlock
+	    {
+		if(nDays <= 0) { throw new IllegalArgumentException(); }
+		Objects.nonNull(records);
+		records = List.copyOf(records); // Defensive copy to enforce immutability.
+	    }
+	}