1 files changed, 71 insertions, 0 deletions
diff --git a/mobile/android/base/java/org/mozilla/gecko/push/Fetched.java b/mobile/android/base/java/org/mozilla/gecko/push/Fetched.java
new file mode 100644
index 000000000..42a7c6a90
--- /dev/null
+++ b/mobile/android/base/java/org/mozilla/gecko/push/Fetched.java
@@ -0,0 +1,71 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko.push;
+
+import android.support.annotation.NonNull;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+/**
+ * Pair a (String) value with a timestamp.  The timestamp is usually when the
+ * value was fetched from a remote service or when the value was locally
+ * generated.
+ *
+ * It's awkward to serialize generic values to JSON -- that requires lots of
+ * factory classes -- so we specialize to String instances.
+ */
+public class Fetched {
+    public final String value;
+    public final long timestamp;
+
+    public Fetched(String value, long timestamp) {
+        this.value = value;
+        this.timestamp = timestamp;
+    }
+
+    public static Fetched now(String value) {
+        return new Fetched(value, System.currentTimeMillis());
+    }
+
+    public static @NonNull Fetched fromJSONObject(@NonNull JSONObject json) {
+        final String value = json.optString("value", null);
+        final String timestampString = json.optString("timestamp", null);
+        final long timestamp = timestampString != null ? Long.valueOf(timestampString) : 0L;
+        return new Fetched(value, timestamp);
+    }
+
+    public JSONObject toJSONObject() throws JSONException {
+        final JSONObject jsonObject = new JSONObject();
+        if (value != null) {
+            jsonObject.put("value", value);
+        } else {
+            jsonObject.remove("value");
+        }
+        jsonObject.put("timestamp", Long.toString(timestamp));
+        return jsonObject;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        // Auto-generated.
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+
+        Fetched fetched = (Fetched) o;
+
+        if (timestamp != fetched.timestamp) return false;
+        return !(value != null ? !value.equals(fetched.value) : fetched.value != null);
+
+    }
+
+    @Override
+    public int hashCode() {
+        // Auto-generated.
+        int result = value != null ? value.hashCode() : 0;
+        result = 31 * result + (int) (timestamp ^ (timestamp >>> 32));
+        return result;
+    }
+}