Android Open Source - force_analytics_example Upgrade Manager With Smart Store

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Copyright (c) 2011, salesforce.com, inc. All rights reserved. ======================================== Redistribution and use of this software in source and binary forms, with or without modificatio...

Java Source Code

/*
 * Copyright (c) 2012, salesforce.com, inc.
 * All rights reserved./*from w  ww.ja v  a2 s.  c  o m*/
 * Redistribution and use of this software in source and binary forms, with or
 * without modification, are permitted provided that the following conditions
 * are met:
 * - Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * - Neither the name of salesforce.com, inc. nor the names of its contributors
 * may be used to endorse or promote products derived from this software without
 * specific prior written permission of salesforce.com, inc.
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */
package com.salesforce.androidsdk.smartstore.app;

import java.io.File;

import android.text.TextUtils;

import com.salesforce.androidsdk.accounts.UserAccount;
import com.salesforce.androidsdk.app.UpgradeManager;
import com.salesforce.androidsdk.smartstore.store.DBOpenHelper;

/**
 * This class handles upgrades from one version to another.
 *
 * @author bhariharan
 */
public class UpgradeManagerWithSmartStore extends UpgradeManager {

    /**
     * Key in shared preference file for smart store version.
     */
    private static final String SMART_STORE_KEY = "smart_store_version";

    private static UpgradeManagerWithSmartStore instance = null;

    /**
     * Returns an instance of this class.
     *
     * @return Instance of this class.
     */
    public static synchronized UpgradeManagerWithSmartStore getInstance() {
        if (instance == null) {
            instance = new UpgradeManagerWithSmartStore();
        }
        return instance;
    }

    /**
     * Upgrades smartstore data from existing client
     * version to the current version.
     */
    public synchronized void upgradeSmartStore() {
        String installedVersion = getInstalledSmartStoreVersion();
        if (installedVersion.equals(SalesforceSDKManagerWithSmartStore.SDK_VERSION)) {
            return;
        }

        // Update shared preference file to reflect the latest version.
        writeCurVersion(SMART_STORE_KEY, SalesforceSDKManagerWithSmartStore.SDK_VERSION);

        /*
         * We need to update this variable, since the app will not
         * have this value set for a first time install.
         */
        if (TextUtils.isEmpty(installedVersion)) {
            installedVersion = getInstalledSmartStoreVersion();
        }
    }

    /**
     * Returns the currently installed version of smartstore.
     *
     * @return Currently installed version of smartstore.
     */
    public String getInstalledSmartStoreVersion() {
        return getInstalledVersion(SMART_STORE_KEY);
    }

    @Override
    protected void upgradeTo2Dot2() {
      super.upgradeTo2Dot2();

      /*
       * Checks if a database exists. If it does, renames the existing
       * database to the new format for the current user.
       * If not, nothing is done.
       */
      final String oldDbName = String.format(DBOpenHelper.DB_NAME, "");
      if (SalesforceSDKManagerWithSmartStore.getInstance().getAppContext().getDatabasePath(oldDbName).exists()) {
        final UserAccount curAccount = SalesforceSDKManagerWithSmartStore.getInstance().getUserAccountManager().getCurrentUser();

        /*
         * If no account exists at this point, there is nothing
         * to be done here.
         */
        if (curAccount != null) {
            final String dbPath = curAccount.getCommunityLevelFilenameSuffix(null);
            if (!TextUtils.isEmpty(dbPath)) {
              final String newDbName = String.format(DBOpenHelper.DB_NAME,
                  dbPath);
              final String dbDir = SalesforceSDKManagerWithSmartStore.getInstance().getAppContext().getApplicationInfo().dataDir
                  + "/databases";
              final File from = new File(dbDir, oldDbName);
              final File to = new File(dbDir, newDbName);
              from.renameTo(to);
            }
        }
      }
    }
}

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