Android Open Source - androidcodes City Pedia Provider

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License

The source code is released under:
GNU General Public License
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Java Source Code

package com.citypedia.app.providers;
/*from w w w .j  a  v  a 2s.c o m*/
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteQueryBuilder;
import android.net.Uri;
import android.os.Handler;

import com.app.citypediav2.utils.LogUtils;

/**
 * This class defines the CityPediaProvider.
 * 
 * @author ranjeet
 * 
 */
public class CityPediaProvider extends ContentProvider {
  private static CityDB cityDB;
  private static final String TAG = "CityPediaProvider.";

  @Override
  public boolean onCreate() {
    Context ctx = getContext();
    LogUtils.LOGD(TAG, "inside CP on create");
    cityDB = new CityDB(ctx, new Handler());
    return true;
  }

  public static CityDB getDBInstance() {

    return cityDB;

  }

  /**
   * Utility function to return the mime type based on a given URI
   */
  @Override
  public String getType(Uri uri) {
    final int match = ContentDescriptor.URI_MATCHER.match(uri);
    switch (match) {

    case ContentDescriptor.Restaurants.RESTAURANT_PATH_TOKEN:
      return ContentDescriptor.Restaurants.CONTENT_TYPE_DIR;

    case ContentDescriptor.ATMs.ATMS:
      return ContentDescriptor.ATMs.CONTENT_TYPE_DIR;

    case ContentDescriptor.Places.PLACES:
      return ContentDescriptor.Places.CONTENT_TYPE_DIR;
    case ContentDescriptor.Gyms.GYMS:
      return ContentDescriptor.Gyms.CONTENT_TYPE_DIR;
    case ContentDescriptor.PetrolPumps.PETROLPUMP:
      return ContentDescriptor.PetrolPumps.CONTENT_TYPE_DIR;

    case ContentDescriptor.Cabs.CABS:
      return ContentDescriptor.Cabs.CONTENT_TYPE_DIR;

    default:
      throw new UnsupportedOperationException("URI " + uri
          + " is not supported.");
    }
  }

  /**
   * Function to query the content provider. This example queries the backing
   * database. It uses the SQLite API to retrieve appcategory data based on
   * the URI specified.
   */
  @Override
  public Cursor query(Uri uri, String[] projection, String selection,
      String[] selectionArgs, String sortOrder) {
    SQLiteDatabase db = cityDB.getReadableDatabase();
    SQLiteQueryBuilder queryBuilder = new SQLiteQueryBuilder();
    Cursor resultSet = null;
    final int match = ContentDescriptor.URI_MATCHER.match(uri);

    LogUtils.LOGD(TAG, "match is query ..." + match);
    switch (match) {

    // retrieve applications list
    case ContentDescriptor.Restaurants.RESTAURANT_PATH_TOKEN: {

      queryBuilder.setTables(ContentDescriptor.Restaurants.NAME);

      sortOrder = ContentDescriptor.Restaurants.Cols.TAG_NAME_OF_RESTAURANT;

      break;

    }

    case ContentDescriptor.ATMs.ATMS: {

      queryBuilder.setTables(ContentDescriptor.ATMs.NAME);

      sortOrder = ContentDescriptor.ATMs.Cols.ATM_ID;

      break;

    }

    case ContentDescriptor.Cabs.CABS: {

      queryBuilder.setTables(ContentDescriptor.Cabs.NAME);

      sortOrder = ContentDescriptor.Cabs.Cols.TAG_CABS_NAME;

      break;

    }

    case ContentDescriptor.Places.PLACES: {

      queryBuilder.setTables(ContentDescriptor.Places.NAME);
      sortOrder = ContentDescriptor.Places.Cols.TAG_PLACE_NAME;

      break;

    }

    case ContentDescriptor.Gyms.GYMS: {

      queryBuilder.setTables(ContentDescriptor.Gyms.NAME);
      sortOrder = ContentDescriptor.Gyms.Cols.TAG_GYM_NAME;

      break;

    }
    case ContentDescriptor.PetrolPumps.PETROLPUMP: {

      queryBuilder.setTables(ContentDescriptor.PetrolPumps.NAME);
      sortOrder = ContentDescriptor.PetrolPumps.Cols.TAG_PETROL_PUMP_NAME;

      break;

    }

    }

    resultSet = queryBuilder.query(db, projection, selection,
        selectionArgs, null, null, sortOrder);

    resultSet.setNotificationUri(getContext().getContentResolver(), uri);

    return resultSet;
  }

  @Override
  public Uri insert(Uri uri, ContentValues values) {
    // TODO Auto-generated method stub
    return null;
  }

  @Override
  public int delete(Uri uri, String selection, String[] selectionArgs) {
    // TODO Auto-generated method stub
    return 0;
  }

  @Override
  public int update(Uri uri, ContentValues values, String selection,
      String[] selectionArgs) {
    // TODO Auto-generated method stub
    return 0;
  }

}
Java Source Code List
