am db296305: Merge "DictionaryWriter to abstract binary dictionary writing." (06e8860e) · Commits · e / os / android_packages_inputmethods_LatinIME

java/src/com/android/inputmethod/latin/AbstractDictionaryWriter.java

0 → 100644

+78 −0

Original line number	Diff line number	Diff line
		/*
		* 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;

		import android.content.Context;
		import android.util.Log;

		import com.android.inputmethod.latin.makedict.UnsupportedFormatException;

		import java.io.File;
		import java.io.FileOutputStream;
		import java.io.IOException;

		// TODO: Quit extending Dictionary after implementing dynamic binary dictionary.
		abstract public class AbstractDictionaryWriter extends Dictionary {
		/** Used for Log actions from this class */
		private static final String TAG = AbstractDictionaryWriter.class.getSimpleName();

		private final Context mContext;

		public AbstractDictionaryWriter(final Context context, final String dictType) {
		super(dictType);
		mContext = context;
		}

		abstract public void clear();

		abstract public void addUnigramWord(final String word, final String shortcutTarget,
		final int frequency, final boolean isNotAWord);

		abstract public void addBigramWords(final String word0, final String word1,
		final int frequency, final boolean isValid);

		abstract public void removeBigramWords(final String word0, final String word1);

		abstract protected void writeBinaryDictionary(final FileOutputStream out)
		throws IOException, UnsupportedFormatException;

		public void write(final String fileName) {
		final String tempFileName = fileName + ".temp";
		final File file = new File(mContext.getFilesDir(), fileName);
		final File tempFile = new File(mContext.getFilesDir(), tempFileName);
		FileOutputStream out = null;
		try {
		out = new FileOutputStream(tempFile);
		writeBinaryDictionary(out);
		out.flush();
		out.close();
		tempFile.renameTo(file);
		} catch (IOException e) {
		Log.e(TAG, "IO exception while writing file", e);
		} catch (UnsupportedFormatException e) {
		Log.e(TAG, "Unsupported format", e);
		} finally {
		if (out != null) {
		try {
		out.close();
		} catch (IOException e) {
		// ignore
		}
		}
		}
		}
		}

java/src/com/android/inputmethod/latin/ContactsBinaryDictionary.java

+5 −1

Original line number	Diff line number	Diff line
		@@ -109,7 +109,6 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {

		@Override
		public void loadDictionaryAsync() {
		clearFusionDictionary();
		loadDeviceAccountsEmailAddresses();
		loadDictionaryAsyncForUri(ContactsContract.Profile.CONTENT_URI);
		// TODO: Switch this URL to the newer ContactsContract too
		@@ -235,6 +234,11 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
		return end;
		}

		@Override
		protected boolean needsToReloadBeforeWriting() {
		return true;
		}

		@Override
		protected boolean hasContentChanged() {
		final long startTime = SystemClock.uptimeMillis();

java/src/com/android/inputmethod/latin/DictionaryWriter.java

0 → 100644

+107 −0

Original line number	Diff line number	Diff line
		/*
		* 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;

		import android.content.Context;

		import com.android.inputmethod.keyboard.ProximityInfo;
		import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
		import com.android.inputmethod.latin.makedict.BinaryDictInputOutput;
		import com.android.inputmethod.latin.makedict.FormatSpec;
		import com.android.inputmethod.latin.makedict.FusionDictionary;
		import com.android.inputmethod.latin.makedict.FusionDictionary.Node;
		import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
		import com.android.inputmethod.latin.makedict.UnsupportedFormatException;
		import com.android.inputmethod.latin.utils.CollectionUtils;

		import java.io.FileOutputStream;
		import java.io.IOException;
		import java.util.ArrayList;
		import java.util.HashMap;

		/**
		* An in memory dictionary for memorizing entries and writing a binary dictionary.
		*/
		public class DictionaryWriter extends AbstractDictionaryWriter {
		// TODO: Regenerate version 3 binary dictionary.
		private static final int BINARY_DICT_VERSION = 2;
		private static final FormatSpec.FormatOptions FORMAT_OPTIONS =
		new FormatSpec.FormatOptions(BINARY_DICT_VERSION);

		private FusionDictionary mFusionDictionary;

		public DictionaryWriter(final Context context, final String dictType) {
		super(context, dictType);
		clear();
		}

		@Override
		public void clear() {
		final HashMap<String, String> attributes = CollectionUtils.newHashMap();
		mFusionDictionary = new FusionDictionary(new Node(),
		new FusionDictionary.DictionaryOptions(attributes, false, false));
		}

		/**
		* Adds a word unigram to the fusion dictionary.
		*/
		// TODO: Create "cache dictionary" to cache fresh words for frequently updated dictionaries,
		// considering performance regression.
		@Override
		public void addUnigramWord(final String word, final String shortcutTarget, final int frequency,
		final boolean isNotAWord) {
		if (shortcutTarget == null) {
		mFusionDictionary.add(word, frequency, null, isNotAWord);
		} else {
		// TODO: Do this in the subclass, with this class taking an arraylist.
		final ArrayList<WeightedString> shortcutTargets = CollectionUtils.newArrayList();
		shortcutTargets.add(new WeightedString(shortcutTarget, frequency));
		mFusionDictionary.add(word, frequency, shortcutTargets, isNotAWord);
		}
		}

		@Override
		public void addBigramWords(final String word0, final String word1, final int frequency,
		final boolean isValid) {
		mFusionDictionary.setBigram(word0, word1, frequency);
		}

		@Override
		public void removeBigramWords(final String word0, final String word1) {
		// This class don't support removing bigram words.
		}

		@Override
		protected void writeBinaryDictionary(final FileOutputStream out)
		throws IOException, UnsupportedFormatException {
		BinaryDictInputOutput.writeDictionaryBinary(out, mFusionDictionary, FORMAT_OPTIONS);
		}

		@Override
		public ArrayList<SuggestedWordInfo> getSuggestions(final WordComposer composer,
		final String prevWord, final ProximityInfo proximityInfo,
		boolean blockOffensiveWords) {
		// This class doesn't support suggestion.
		return null;
		}

		@Override
		public boolean isValidWord(String word) {
		// This class doesn't support dictionary retrieval.
		return false;
		}
		}

java/src/com/android/inputmethod/latin/ExpandableBinaryDictionary.java

+59 −86

Original line number	Diff line number	Diff line
		@@ -22,17 +22,9 @@ import android.util.Log;

		import com.android.inputmethod.keyboard.ProximityInfo;
		import com.android.inputmethod.latin.SuggestedWords.SuggestedWordInfo;
		import com.android.inputmethod.latin.makedict.BinaryDictInputOutput;
		import com.android.inputmethod.latin.makedict.FormatSpec;
		import com.android.inputmethod.latin.makedict.FusionDictionary;
		import com.android.inputmethod.latin.makedict.FusionDictionary.Node;
		import com.android.inputmethod.latin.makedict.FusionDictionary.WeightedString;
		import com.android.inputmethod.latin.makedict.UnsupportedFormatException;
		import com.android.inputmethod.latin.utils.CollectionUtils;

		import java.io.File;
		import java.io.FileOutputStream;
		import java.io.IOException;
		import java.util.ArrayList;
		import java.util.HashMap;
		import java.util.concurrent.locks.ReentrantReadWriteLock;
		@@ -76,8 +68,8 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		*/
		private BinaryDictionary mBinaryDictionary;

		/** The expandable fusion dictionary used to generate the binary dictionary. */
		private FusionDictionary mFusionDictionary;
		/** The in-memory dictionary used to generate the binary dictionary. */
		private AbstractDictionaryWriter mDictionaryWriter;

		/**
		* The name of this dictionary, used as the filename for storing the binary dictionary. Multiple
		@@ -92,11 +84,6 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		/** Controls access to the local binary dictionary for this instance. */
		private final DictionaryController mLocalDictionaryController = new DictionaryController();

		// TODO: Regenerate version 3 binary dictionary.
		private static final int BINARY_DICT_VERSION = 2;
		private static final FormatSpec.FormatOptions FORMAT_OPTIONS =
		new FormatSpec.FormatOptions(BINARY_DICT_VERSION);

		/**
		* Abstract method for loading the unigrams and bigrams of a given dictionary in a background
		* thread.
		@@ -138,7 +125,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		mContext = context;
		mBinaryDictionary = null;
		mSharedDictionaryController = getSharedDictionaryController(filename);
		clearFusionDictionary();
		mDictionaryWriter = new DictionaryWriter(context, dictType);
		}

		protected static String getFilenameWithLocale(final String name, final String localeStr) {
		@@ -157,47 +144,51 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		mBinaryDictionary.close();
		mBinaryDictionary = null;
		}
		mDictionaryWriter.close();
		} finally {
		mLocalDictionaryController.writeLock().unlock();
		}
		}

		/**
		* Clears the fusion dictionary on the Java side. Note: Does not modify the binary dictionary on
		* the native side.
		* Adds a word unigram to the dictionary. Used for loading a dictionary.
		*/
		public void clearFusionDictionary() {
		final HashMap<String, String> attributes = CollectionUtils.newHashMap();
		mFusionDictionary = new FusionDictionary(new Node(),
		new FusionDictionary.DictionaryOptions(attributes, false, false));
		protected void addWord(final String word, final String shortcutTarget,
		final int frequency, final boolean isNotAWord) {
		mDictionaryWriter.addUnigramWord(word, shortcutTarget, frequency, isNotAWord);
		}

		/**
		* Adds a word unigram to the fusion dictionary. Call updateBinaryDictionary when all changes
		* are done to update the binary dictionary.
		* Sets a word bigram in the dictionary. Used for loading a dictionary.
		*/
		// TODO: Create "cache dictionary" to cache fresh words for frequently updated dictionaries,
		// considering performance regression.
		protected void addWord(final String word, final String shortcutTarget, final int frequency,
		final boolean isNotAWord) {
		if (shortcutTarget == null) {
		mFusionDictionary.add(word, frequency, null, isNotAWord);
		} else {
		// TODO: Do this in the subclass, with this class taking an arraylist.
		final ArrayList<WeightedString> shortcutTargets = CollectionUtils.newArrayList();
		shortcutTargets.add(new WeightedString(shortcutTarget, frequency));
		mFusionDictionary.add(word, frequency, shortcutTargets, isNotAWord);
		protected void setBigram(final String prevWord, final String word, final int frequency) {
		mDictionaryWriter.addBigramWords(prevWord, word, frequency, true /* isValid */);
		}

		/**
		* Dynamically adds a word unigram to the dictionary.
		*/
		protected void addWordDynamically(final String word, final String shortcutTarget,
		final int frequency, final boolean isNotAWord) {
		mLocalDictionaryController.writeLock().lock();
		try {
		mDictionaryWriter.addUnigramWord(word, shortcutTarget, frequency, isNotAWord);
		} finally {
		mLocalDictionaryController.writeLock().unlock();
		}
		}

		/**
		* Sets a word bigram in the fusion dictionary. Call updateBinaryDictionary when all changes are
		* done to update the binary dictionary.
		* Dynamically sets a word bigram in the dictionary.
		*/
		// TODO: Create "cache dictionary" to cache fresh bigrams for frequently updated dictionaries,
		// considering performance regression.
		protected void setBigram(final String prevWord, final String word, final int frequency) {
		mFusionDictionary.setBigram(prevWord, word, frequency);
		protected void setBigramDynamically(final String prevWord, final String word,
		final int frequency) {
		mLocalDictionaryController.writeLock().lock();
		try {
		mDictionaryWriter.addBigramWords(prevWord, word, frequency, true /* isValid */);
		} finally {
		mLocalDictionaryController.writeLock().unlock();
		}
		}

		@Override
		@@ -207,9 +198,23 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		asyncReloadDictionaryIfRequired();
		if (mLocalDictionaryController.readLock().tryLock()) {
		try {
		final ArrayList<SuggestedWordInfo> inMemDictSuggestion =
		mDictionaryWriter.getSuggestions(composer, prevWord, proximityInfo,
		blockOffensiveWords);
		if (mBinaryDictionary != null) {
		return mBinaryDictionary.getSuggestions(composer, prevWord, proximityInfo,
		final ArrayList<SuggestedWordInfo> binarySuggestion =
		mBinaryDictionary.getSuggestions(composer, prevWord, proximityInfo,
		blockOffensiveWords);
		if (inMemDictSuggestion == null) {
		return binarySuggestion;
		} else if (binarySuggestion == null) {
		return inMemDictSuggestion;
		} else {
		binarySuggestion.addAll(binarySuggestion);
		return binarySuggestion;
		}
		} else {
		return inMemDictSuggestion;
		}
		} finally {
		mLocalDictionaryController.readLock().unlock();
		@@ -240,22 +245,6 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		return mBinaryDictionary.isValidWord(word);
		}

		protected boolean isValidBigram(final String word1, final String word2) {
		if (mBinaryDictionary == null) return false;
		return mBinaryDictionary.isValidBigram(word1, word2);
		}

		protected boolean isValidBigramInner(final String word1, final String word2) {
		if (mLocalDictionaryController.readLock().tryLock()) {
		try {
		return isValidBigramLocked(word1, word2);
		} finally {
		mLocalDictionaryController.readLock().unlock();
		}
		}
		return false;
		}

		protected boolean isValidBigramLocked(final String word1, final String word2) {
		if (mBinaryDictionary == null) return false;
		return mBinaryDictionary.isValidBigram(word1, word2);
		@@ -274,7 +263,7 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		* Loads the current binary dictionary from internal storage. Assumes the dictionary file
		* exists.
		*/
		protected void loadBinaryDictionary() {
		private void loadBinaryDictionary() {
		if (DEBUG) {
		Log.d(TAG, "Loading binary dictionary: " + mFilename + " request="
		+ mSharedDictionaryController.mLastUpdateRequestTime + " update="
		@@ -305,6 +294,12 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		}
		}

		/**
		* Abstract method for checking if it is required to reload the dictionary before writing
		* a binary dictionary.
		*/
		abstract protected boolean needsToReloadBeforeWriting();

		/**
		* Generates and writes a new binary dictionary based on the contents of the fusion dictionary.
		*/
		@@ -314,33 +309,11 @@ abstract public class ExpandableBinaryDictionary extends Dictionary {
		+ mSharedDictionaryController.mLastUpdateRequestTime + " update="
		+ mSharedDictionaryController.mLastUpdateTime);
		}

		if (needsToReloadBeforeWriting()) {
		mDictionaryWriter.clear();
		loadDictionaryAsync();

		final String tempFileName = mFilename + ".temp";
		final File file = new File(mContext.getFilesDir(), mFilename);
		final File tempFile = new File(mContext.getFilesDir(), tempFileName);
		FileOutputStream out = null;
		try {
		out = new FileOutputStream(tempFile);
		BinaryDictInputOutput.writeDictionaryBinary(out, mFusionDictionary, FORMAT_OPTIONS);
		out.flush();
		out.close();
		tempFile.renameTo(file);
		clearFusionDictionary();
		} catch (IOException e) {
		Log.e(TAG, "IO exception while writing file", e);
		} catch (UnsupportedFormatException e) {
		Log.e(TAG, "Unsupported format", e);
		} finally {
		if (out != null) {
		try {
		out.close();
		} catch (IOException e) {
		// ignore
		}
		}
		}
		mDictionaryWriter.write(mFilename);
		}

		/**

java/src/com/android/inputmethod/latin/UserBinaryDictionary.java

+5 −1

Original line number	Diff line number	Diff line
		@@ -240,7 +240,6 @@ public class UserBinaryDictionary extends ExpandableBinaryDictionary {

		private void addWords(final Cursor cursor) {
		final boolean hasShortcutColumn = Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN;
		clearFusionDictionary();
		if (cursor == null) return;
		if (cursor.moveToFirst()) {
		final int indexWord = cursor.getColumnIndex(Words.WORD);
		@@ -267,4 +266,9 @@ public class UserBinaryDictionary extends ExpandableBinaryDictionary {
		protected boolean hasContentChanged() {
		return true;
		}

		@Override
		protected boolean needsToReloadBeforeWriting() {
		return true;
		}
		}