Try decaying user history at hourly intervals.

Bug: 6669677

Change-Id: Ib465fa7e1a7f289a07843535ba89d0dd5259e803

1 files changed, 12 insertions, 1 deletions

diff --git a/java/src/com/android/inputmethod/latin/personalization/PersonalizationHelper.java b/java/src/com/android/inputmethod/latin/personalization/PersonalizationHelper.java
index 8c9484b12..221ddeeba 100644
--- a/java/src/com/android/inputmethod/latin/personalization/PersonalizationHelper.java
+++ b/java/src/com/android/inputmethod/latin/personalization/PersonalizationHelper.java
@@ -29,7 +29,6 @@ import java.util.concurrent.ConcurrentHashMap;
 public class PersonalizationHelper {
     private static final String TAG = PersonalizationHelper.class.getSimpleName();
     private static final boolean DEBUG = false;
-
     private static final ConcurrentHashMap<String, SoftReference<UserHistoryDictionary>>
             sLangUserHistoryDictCache = CollectionUtils.newConcurrentHashMap();
 
@@ -62,6 +61,18 @@ public class PersonalizationHelper {
         }
     }
 
+    public static void tryDecayingAllOpeningUserHistoryDictionary() {
+        for (final ConcurrentHashMap.Entry<String, SoftReference<UserHistoryDictionary>> entry
+                : sLangUserHistoryDictCache.entrySet()) {
+            if (entry.getValue() != null) {
+                final UserHistoryDictionary dict = entry.getValue().get();
+                if (dict != null) {
+                    dict.decayIfNeeded();
+                }
+            }
+        }
+    }
+
     public static void registerPersonalizationDictionaryUpdateSession(final Context context,
             final PersonalizationDictionaryUpdateSession session, String locale) {
         final PersonalizationPredictionDictionary predictionDictionary =