/* * Copyright (C) 2013 The Android Open Source Project * * 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 com.android.inputmethod.latin.personalization; import com.android.inputmethod.latin.utils.CollectionUtils; import android.content.Context; import android.content.SharedPreferences; import android.util.Log; import java.lang.ref.SoftReference; import java.util.concurrent.ConcurrentHashMap; public class PersonalizationDictionaryHelper { private static final String TAG = PersonalizationDictionaryHelper.class.getSimpleName(); private static final boolean DEBUG = false; private static final ConcurrentHashMap> sLangDictCache = CollectionUtils.newConcurrentHashMap(); public static UserHistoryPredictionDictionary getUserHistoryPredictionDictionary( final Context context, final String locale, final SharedPreferences sp) { synchronized (sLangDictCache) { if (sLangDictCache.containsKey(locale)) { final SoftReference ref = sLangDictCache.get(locale); final UserHistoryPredictionDictionary dict = ref == null ? null : ref.get(); if (dict != null) { if (DEBUG) { Log.w(TAG, "Use cached UserHistoryDictionary for " + locale); } return dict; } } final UserHistoryPredictionDictionary dict = new UserHistoryPredictionDictionary(context, locale, sp); sLangDictCache.put(locale, new SoftReference(dict)); return dict; } } }