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Merge "Straighten out database cursors behavior."

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This commit is contained in:
Jean Chalard 2014-02-18 11:09:38 +00:00 committed by Android (Google) Code Review
commit 80d413caff
8 changed files with 178 additions and 136 deletions
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6
java/src/com/android/inputmethod/dictionarypack/DictionaryProvider.java
View file

@ -350,7 +350,8 @@ public final class DictionaryProvider extends ContentProvider {
clientId);
if (null == results) {
return Collections.<WordListInfo>emptyList();
} else {
}
try {
final HashMap<String, WordListInfo> dicts = new HashMap<String, WordListInfo>();
final int idIndex = results.getColumnIndex(MetadataDbHelper.WORDLISTID_COLUMN);
final int localeIndex = results.getColumnIndex(MetadataDbHelper.LOCALE_COLUMN);
@ -416,8 +417,9 @@ public final class DictionaryProvider extends ContentProvider {
}
} while (results.moveToNext());
}
results.close();
return Collections.unmodifiableCollection(dicts.values());
} finally {
results.close();
}
}

31
java/src/com/android/inputmethod/dictionarypack/DictionarySettingsFragment.java
View file

@ -283,10 +283,11 @@ public final class DictionarySettingsFragment extends PreferenceFragment
final ArrayList<Preference> result = new ArrayList<Preference>();
result.add(createErrorMessage(activity, R.string.cannot_connect_to_dict_service));
return result;
} else if (!cursor.moveToFirst()) {
}
try {
if (!cursor.moveToFirst()) {
final ArrayList<Preference> result = new ArrayList<Preference>();
result.add(createErrorMessage(activity, R.string.no_dictionaries_available));
cursor.close();
return result;
} else {
final String systemLocaleString = Locale.getDefault().toString();
@ -295,7 +296,8 @@ public final class DictionarySettingsFragment extends PreferenceFragment
final int idIndex = cursor.getColumnIndex(MetadataDbHelper.WORDLISTID_COLUMN);
final int versionIndex = cursor.getColumnIndex(MetadataDbHelper.VERSION_COLUMN);
final int localeIndex = cursor.getColumnIndex(MetadataDbHelper.LOCALE_COLUMN);
final int descriptionIndex = cursor.getColumnIndex(MetadataDbHelper.DESCRIPTION_COLUMN);
final int descriptionIndex =
cursor.getColumnIndex(MetadataDbHelper.DESCRIPTION_COLUMN);
final int statusIndex = cursor.getColumnIndex(MetadataDbHelper.STATUS_COLUMN);
final int filesizeIndex = cursor.getColumnIndex(MetadataDbHelper.FILESIZE_COLUMN);
do {
@ -305,8 +307,10 @@ public final class DictionarySettingsFragment extends PreferenceFragment
final Locale locale = new Locale(localeString);
final String description = cursor.getString(descriptionIndex);
final int status = cursor.getInt(statusIndex);
final int matchLevel = LocaleUtils.getMatchLevel(systemLocaleString, localeString);
final String matchLevelString = LocaleUtils.getMatchLevelSortedString(matchLevel);
final int matchLevel =
LocaleUtils.getMatchLevel(systemLocaleString, localeString);
final String matchLevelString =
LocaleUtils.getMatchLevelSortedString(matchLevel);
final int filesize = cursor.getInt(filesizeIndex);
// The key is sorted in lexicographic order, according to the match level, then
// the description.
@ -319,12 +323,13 @@ public final class DictionarySettingsFragment extends PreferenceFragment
&& oldPreference.mVersion == version
&& oldPreference.hasStatus(status)
&& oldPreference.mLocale.equals(locale)) {
// If the old preference has all the new attributes, reuse it. Ideally, we
// should reuse the old pref even if its status is different and call
// setStatus here, but setStatus calls Preference#setSummary() which needs
// to be done on the UI thread and we're not on the UI thread here. We
// could do all this work on the UI thread, but in this case it's probably
// lighter to stay on a background thread and throw this old preference out.
// If the old preference has all the new attributes, reuse it. Ideally,
// we should reuse the old pref even if its status is different and call
// setStatus here, but setStatus calls Preference#setSummary() which
// needs to be done on the UI thread and we're not on the UI thread
// here. We could do all this work on the UI thread, but in this case
// it's probably lighter to stay on a background thread and throw this
// old preference out.
pref = oldPreference;
} else {
// Otherwise, discard it and create a new one instead.
@ -337,10 +342,12 @@ public final class DictionarySettingsFragment extends PreferenceFragment
prefMap.put(key, pref);
}
} while (cursor.moveToNext());
cursor.close();
mCurrentPreferenceMap = prefMap;
return prefMap.values();
}
} finally {
cursor.close();
}
}
@Override

42
java/src/com/android/inputmethod/dictionarypack/MetadataDbHelper.java
View file

@ -533,12 +533,17 @@ public class MetadataDbHelper extends SQLiteOpenHelper {
PENDINGID_COLUMN + "= ?",
new String[] { Long.toString(id) },
null, null, null);
// There should never be more than one result. If because of some bug there are, returning
// only one result is the right thing to do, because we couldn't handle several anyway
// and we should still handle one.
final ContentValues result = getFirstLineAsContentValues(cursor);
if (null == cursor) {
return null;
}
try {
// There should never be more than one result. If because of some bug there are,
// returning only one result is the right thing to do, because we couldn't handle
// several anyway and we should still handle one.
return getFirstLineAsContentValues(cursor);
} finally {
cursor.close();
return result;
}
}
/**
@ -559,11 +564,16 @@ public class MetadataDbHelper extends SQLiteOpenHelper {
new String[] { id, Integer.toString(STATUS_INSTALLED),
Integer.toString(STATUS_DELETING) },
null, null, null);
if (null == cursor) {
return null;
}
try {
// There should only be one result, but if there are several, we can't tell which
// is the best, so we just return the first one.
final ContentValues result = getFirstLineAsContentValues(cursor);
return getFirstLineAsContentValues(cursor);
} finally {
cursor.close();
return result;
}
}
/**
@ -622,10 +632,15 @@ public class MetadataDbHelper extends SQLiteOpenHelper {
METADATA_TABLE_COLUMNS,
WORDLISTID_COLUMN + "= ? AND " + VERSION_COLUMN + "= ?",
new String[] { id, Integer.toString(version) }, null, null, null);
if (null == cursor) {
return null;
}
try {
// This is a lookup by primary key, so there can't be more than one result.
final ContentValues result = getFirstLineAsContentValues(cursor);
return getFirstLineAsContentValues(cursor);
} finally {
cursor.close();
return result;
}
}
/**
@ -641,10 +656,15 @@ public class MetadataDbHelper extends SQLiteOpenHelper {
METADATA_TABLE_COLUMNS,
WORDLISTID_COLUMN + "= ?",
new String[] { id }, null, null, VERSION_COLUMN + " DESC", "1");
if (null == cursor) {
return null;
}
try {
// This is a lookup by primary key, so there can't be more than one result.
final ContentValues result = getFirstLineAsContentValues(cursor);
return getFirstLineAsContentValues(cursor);
} finally {
cursor.close();
return result;
}
}
/**

15
java/src/com/android/inputmethod/dictionarypack/MetadataHandler.java
View file

@ -44,8 +44,7 @@ public class MetadataHandler {
*/
private static List<WordListMetadata> makeMetadataObject(final Cursor results) {
final ArrayList<WordListMetadata> buildingMetadata = new ArrayList<WordListMetadata>();
if (results.moveToFirst()) {
if (null != results && results.moveToFirst()) {
final int localeColumn = results.getColumnIndex(MetadataDbHelper.LOCALE_COLUMN);
final int typeColumn = results.getColumnIndex(MetadataDbHelper.TYPE_COLUMN);
final int descriptionColumn =
@ -61,7 +60,6 @@ public class MetadataHandler {
final int versionIndex = results.getColumnIndex(MetadataDbHelper.VERSION_COLUMN);
final int formatVersionIndex =
results.getColumnIndex(MetadataDbHelper.FORMATVERSION_COLUMN);
do {
buildingMetadata.add(new WordListMetadata(results.getString(idIndex),
results.getInt(typeColumn),
@ -75,8 +73,6 @@ public class MetadataHandler {
results.getInt(formatVersionIndex),
0, results.getString(localeColumn)));
} while (results.moveToNext());
results.close();
}
return Collections.unmodifiableList(buildingMetadata);
}
@ -92,9 +88,14 @@ public class MetadataHandler {
// If clientId is null, we get a cursor on the default database (see
// MetadataDbHelper#getInstance() for more on this)
final Cursor results = MetadataDbHelper.queryCurrentMetadata(context, clientId);
final List<WordListMetadata> resultList = makeMetadataObject(results);
// If null, we should return makeMetadataObject(null), so we go through.
try {
return makeMetadataObject(results);
} finally {
if (null != results) {
results.close();
return resultList;
}
}
}
/**

23
java/src/com/android/inputmethod/latin/BinaryDictionaryFileDumper.java
View file

@ -142,7 +142,7 @@ public final class BinaryDictionaryFileDumper {
final ContentProviderClient client = context.getContentResolver().
acquireContentProviderClient(getProviderUriBuilder("").build());
if (null == client) return Collections.<WordListInfo>emptyList();
Cursor cursor = null;
try {
final Uri.Builder builder = getContentUriBuilderForType(clientId, client,
QUERY_PATH_DICT_INFO, locale.toString());
@ -154,24 +154,22 @@ public final class BinaryDictionaryFileDumper {
final boolean isProtocolV2 = (QUERY_PARAMETER_PROTOCOL_VALUE.equals(
queryUri.getQueryParameter(QUERY_PARAMETER_PROTOCOL)));
Cursor c = client.query(queryUri, DICTIONARY_PROJECTION, null, null, null);
if (isProtocolV2 && null == c) {
cursor = client.query(queryUri, DICTIONARY_PROJECTION, null, null, null);
if (isProtocolV2 && null == cursor) {
reinitializeClientRecordInDictionaryContentProvider(context, client, clientId);
c = client.query(queryUri, DICTIONARY_PROJECTION, null, null, null);
cursor = client.query(queryUri, DICTIONARY_PROJECTION, null, null, null);
}
if (null == c) return Collections.<WordListInfo>emptyList();
if (c.getCount() <= 0 || !c.moveToFirst()) {
c.close();
if (null == cursor) return Collections.<WordListInfo>emptyList();
if (cursor.getCount() <= 0 || !cursor.moveToFirst()) {
return Collections.<WordListInfo>emptyList();
}
final ArrayList<WordListInfo> list = CollectionUtils.newArrayList();
do {
final String wordListId = c.getString(0);
final String wordListLocale = c.getString(1);
final String wordListId = cursor.getString(0);
final String wordListLocale = cursor.getString(1);
if (TextUtils.isEmpty(wordListId)) continue;
list.add(new WordListInfo(wordListId, wordListLocale));
} while (c.moveToNext());
c.close();
} while (cursor.moveToNext());
return list;
} catch (RemoteException e) {
// The documentation is unclear as to in which cases this may happen, but it probably
@ -186,6 +184,9 @@ public final class BinaryDictionaryFileDumper {
Log.e(TAG, "Unexpected exception communicating with the dictionary pack", e);
return Collections.<WordListInfo>emptyList();
} finally {
if (null != cursor) {
cursor.close();
}
client.release();
}
}

44
java/src/com/android/inputmethod/latin/ContactsBinaryDictionary.java
View file

@ -139,23 +139,24 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
}
private void loadDictionaryAsyncForUri(final Uri uri) {
Cursor cursor = null;
try {
Cursor cursor = mContext.getContentResolver()
.query(uri, PROJECTION, null, null, null);
if (cursor != null) {
try {
cursor = mContext.getContentResolver().query(uri, PROJECTION, null, null, null);
if (null == cursor) {
return;
}
if (cursor.moveToFirst()) {
sContactCountAtLastRebuild = getContactCount();
addWords(cursor);
}
} finally {
cursor.close();
}
}
} catch (final SQLiteException e) {
Log.e(TAG, "SQLiteException in the remote Contacts process.", e);
} catch (final IllegalStateException e) {
Log.e(TAG, "Contacts DB is having problems", e);
} finally {
if (null != cursor) {
cursor.close();
}
}
}
@ -186,18 +187,20 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
private int getContactCount() {
// TODO: consider switching to a rawQuery("select count(*)...") on the database if
// performance is a bottleneck.
Cursor cursor = null;
try {
final Cursor cursor = mContext.getContentResolver().query(
Contacts.CONTENT_URI, PROJECTION_ID_ONLY, null, null, null);
if (cursor != null) {
try {
cursor = mContext.getContentResolver().query(Contacts.CONTENT_URI, PROJECTION_ID_ONLY,
null, null, null);
if (null == cursor) {
return 0;
}
return cursor.getCount();
} finally {
cursor.close();
}
}
} catch (final SQLiteException e) {
Log.e(TAG, "SQLiteException in the remote Contacts process.", e);
} finally {
if (null != cursor) {
cursor.close();
}
}
return 0;
}
@ -281,9 +284,11 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
// Check all contacts since it's not possible to find out which names have changed.
// This is needed because it's possible to receive extraneous onChange events even when no
// name has changed.
Cursor cursor = mContext.getContentResolver().query(
Contacts.CONTENT_URI, PROJECTION, null, null, null);
if (cursor != null) {
final Cursor cursor = mContext.getContentResolver().query(Contacts.CONTENT_URI, PROJECTION,
null, null, null);
if (null == cursor) {
return false;
}
try {
if (cursor.moveToFirst()) {
while (!cursor.isAfterLast()) {
@ -301,7 +306,6 @@ public class ContactsBinaryDictionary extends ExpandableBinaryDictionary {
} finally {
cursor.close();
}
}
if (DEBUG) {
Log.d(TAG, "No contacts changed. (runtime = " + (SystemClock.uptimeMillis() - startTime)
+ " ms)");

7
java/src/com/android/inputmethod/latin/userdictionary/UserDictionaryList.java
View file

@ -61,13 +61,18 @@ public class UserDictionaryList extends PreferenceFragment {
if (null == cursor) {
// The user dictionary service is not present or disabled. Return null.
return null;
} else if (cursor.moveToFirst()) {
}
try {
if (cursor.moveToFirst()) {
final int columnIndex = cursor.getColumnIndex(UserDictionary.Words.LOCALE);
do {
final String locale = cursor.getString(columnIndex);
localeSet.add(null != locale ? locale : "");
} while (cursor.moveToNext());
}
} finally {
cursor.close();
}
if (!UserDictionarySettings.IS_SHORTCUT_API_SUPPORTED) {
// For ICS, we need to show "For all languages" in case that the keyboard locale
// is different from the system locale

2
java/src/com/android/inputmethod/latin/userdictionary/UserDictionarySettings.java
View file

@ -140,6 +140,8 @@ public class UserDictionarySettings extends ListFragment {
}
mLocale = locale;
// WARNING: The following cursor is never closed! TODO: don't put that in a member, and
// make sure all cursors are correctly closed.
mCursor = createCursor(locale);
TextView emptyView = (TextView) getView().findViewById(android.R.id.empty);
emptyView.setText(R.string.user_dict_settings_empty_text);