105 lines
3.6 KiB
Java
105 lines
3.6 KiB
Java
/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.latin.personalization;
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import android.content.Context;
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import com.android.inputmethod.annotations.UsedForTesting;
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import com.android.inputmethod.latin.Constants;
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import com.android.inputmethod.latin.Dictionary;
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import com.android.inputmethod.latin.ExpandableBinaryDictionary;
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import com.android.inputmethod.latin.makedict.DictionaryHeader;
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import com.android.inputmethod.latin.utils.LanguageModelParam;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.Locale;
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import java.util.Map;
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/**
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* This class is a base class of a dictionary that supports decaying for the personalized language
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* model.
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*/
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public abstract class DecayingExpandableBinaryDictionaryBase extends ExpandableBinaryDictionary {
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private static final String TAG = DecayingExpandableBinaryDictionaryBase.class.getSimpleName();
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private static final boolean DBG_DUMP_ON_CLOSE = false;
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/** Any pair being typed or picked */
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public static final int FREQUENCY_FOR_TYPED = 2;
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public static final int FREQUENCY_FOR_WORDS_IN_DICTS = FREQUENCY_FOR_TYPED;
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public static final int FREQUENCY_FOR_WORDS_NOT_IN_DICTS = Dictionary.NOT_A_PROBABILITY;
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/** The locale for this dictionary. */
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public final Locale mLocale;
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private Map<String, String> mAdditionalAttributeMap = null;
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protected DecayingExpandableBinaryDictionaryBase(final Context context,
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final String dictName, final Locale locale, final String dictionaryType,
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final File dictFile) {
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super(context, dictName, locale, dictionaryType, dictFile);
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mLocale = locale;
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if (mLocale != null && mLocale.toString().length() > 1) {
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reloadDictionaryIfRequired();
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}
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}
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@Override
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public void close() {
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if (DBG_DUMP_ON_CLOSE) {
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dumpAllWordsForDebug();
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}
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// Flush pending writes.
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asyncFlushBinaryDictionary();
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super.close();
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}
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@Override
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protected Map<String, String> getHeaderAttributeMap() {
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final Map<String, String> attributeMap = super.getHeaderAttributeMap();
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if (mAdditionalAttributeMap != null) {
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attributeMap.putAll(mAdditionalAttributeMap);
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}
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attributeMap.put(DictionaryHeader.USES_FORGETTING_CURVE_KEY,
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DictionaryHeader.ATTRIBUTE_VALUE_TRUE);
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attributeMap.put(DictionaryHeader.HAS_HISTORICAL_INFO_KEY,
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DictionaryHeader.ATTRIBUTE_VALUE_TRUE);
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return attributeMap;
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}
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@Override
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protected boolean haveContentsChanged() {
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return false;
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}
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@Override
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protected void loadInitialContentsLocked() {
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// No initial contents.
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}
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@UsedForTesting
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public void clearAndFlushDictionaryWithAdditionalAttributes(
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final Map<String, String> attributeMap) {
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mAdditionalAttributeMap = attributeMap;
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clear();
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}
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/* package */ void runGCIfRequired() {
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runGCIfRequired(false /* mindsBlockByGC */);
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}
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}
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