Android Open Source - android-core Database Utils

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License

The source code is released under:
Apache License
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Java Source Code

/** 
 * [SIMINOV FRAMEWORK]/*from  w  ww.j  a v  a 2s .com*/
 * Copyright [2015] [Siminov Software Solution LLP|support@siminov.com]
 *
 * 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 siminov.core.database;

import java.io.File;

import siminov.core.Constants;
import siminov.core.model.ApplicationDescriptor;
import siminov.core.model.DatabaseDescriptor;
import siminov.core.resource.ResourceManager;
import android.content.Context;
import android.os.Environment;


/**
 * Exposes utils methods to deal with database. 
 * It has methods to form database file paths.
 */
public class DatabaseUtils {

  /**
   * Check whether SDCard is present on device or not.
   * @return TRUE: If SDCard is present on device, FALSE: If SDCard is not present.
   */
  public boolean isSDCardPresent() {
    return android.os.Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED);
  }
  
  /**
   * Get internal memory database path.
   * @param databaseDescriptor Database Descriptor Object.
   */
  public String internalMemoryDatabasePath(final DatabaseDescriptor databaseDescriptor) {
    ResourceManager resourceManager = ResourceManager.getInstance();
    ApplicationDescriptor applicationDescriptor = resourceManager.getApplicationDescriptor();
    Context context = resourceManager.getApplicationContext();
    
    String databaseDirName = databaseDescriptor.getDatabaseName();
    
    String databaseDirPath = Constants.DATABASE_PATH_DATA + File.separator + Constants.DATABASE_PATH_DATA + File.separator + context.getPackageName() + File.separator + applicationDescriptor.getName() + File.separator + Constants.DATABASE_PATH_DATABASE + File.separator + databaseDirName + File.separator;
    return databaseDirPath;
  }
  
  /**
   * Get sdcard database path.
   * @param databaseDescriptor Database Descriptor Object.
   */
  public String sdcardMemoryDatabasePath(final DatabaseDescriptor databaseDescriptor) {
    File externalStorage = Environment.getExternalStorageDirectory();
    String externalStoragePath = externalStorage.getAbsolutePath();
    
    ResourceManager resourceManager = ResourceManager.getInstance();
    ApplicationDescriptor applicationDescriptor = resourceManager.getApplicationDescriptor();

    String databaseDirName = databaseDescriptor.getDatabaseName();

    String databaseDirPath = externalStoragePath + File.separator + applicationDescriptor.getName() + File.separator + Constants.DATABASE_PATH_DATABASE + File.separator + databaseDirName + File.separator;
    return databaseDirPath;
  }
  
  /**
   * Get database path based on which storage needed.
   * @param databaseDescriptor Database Descriptor Object.
   */
  public String getDatabasePath(final DatabaseDescriptor databaseDescriptor) {
    DatabaseUtils databaseUtils = new DatabaseUtils();
    String databasePath = null;

    boolean isExternalStorageEnable = databaseDescriptor.isExternalStorageEnable();
    if(isExternalStorageEnable) {
      if(databaseUtils.isSDCardPresent()) {
        databasePath = databaseUtils.sdcardMemoryDatabasePath(databaseDescriptor);
      } else {
        databasePath = databaseUtils.internalMemoryDatabasePath(databaseDescriptor);
      }
    } else {
      databasePath = databaseUtils.internalMemoryDatabasePath(databaseDescriptor);
    }

    return databasePath;
  }
}
Java Source Code List
