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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package org.mozilla.gecko.db;
import java.io.File;
import java.util.HashMap;
import org.mozilla.gecko.GeckoProfile;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.text.TextUtils;
/**
* Manages a set of per-profile database storage helpers.
*/
public class PerProfileDatabases<T extends SQLiteOpenHelper> {
private final HashMap<String, T> mStorages = new HashMap<String, T>();
private final Context mContext;
private final String mDatabaseName;
private final DatabaseHelperFactory<T> mHelperFactory;
// Only used during tests.
public void shutdown() {
synchronized (this) {
for (T t : mStorages.values()) {
try {
t.close();
} catch (Throwable e) {
// Never mind.
}
}
}
}
public interface DatabaseHelperFactory<T> {
public T makeDatabaseHelper(Context context, String databasePath);
}
public PerProfileDatabases(final Context context, final String databaseName, final DatabaseHelperFactory<T> helperFactory) {
mContext = context;
mDatabaseName = databaseName;
mHelperFactory = helperFactory;
}
public String getDatabasePathForProfile(String profile) {
final File profileDir = GeckoProfile.get(mContext, profile).getDir();
if (profileDir == null) {
return null;
}
return new File(profileDir, mDatabaseName).getAbsolutePath();
}
public T getDatabaseHelperForProfile(String profile) {
return getDatabaseHelperForProfile(profile, false);
}
public T getDatabaseHelperForProfile(String profile, boolean isTest) {
// Always fall back to default profile if none has been provided.
if (profile == null) {
profile = GeckoProfile.get(mContext).getName();
}
synchronized (this) {
if (mStorages.containsKey(profile)) {
return mStorages.get(profile);
}
final String databasePath = isTest ? mDatabaseName : getDatabasePathForProfile(profile);
if (databasePath == null) {
throw new IllegalStateException("Database path is null for profile: " + profile);
}
final T helper = mHelperFactory.makeDatabaseHelper(mContext, databasePath);
DBUtils.ensureDatabaseIsNotLocked(helper, databasePath);
mStorages.put(profile, helper);
return helper;
}
}
public synchronized void shrinkMemory() {
for (T t : mStorages.values()) {
final SQLiteDatabase db = t.getWritableDatabase();
db.execSQL("PRAGMA shrink_memory");
}
}
}
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