Android Open Source - InMemoryDb Async Query Handler

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License

The source code is released under:

Apache License

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Java Source Code

package org.gawst.asyncdb;
/*from ww  w  . j  av  a 2s. c  o m*/
import android.content.ContentResolver;
import android.content.ContentValues;
import android.database.Cursor;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;

import org.gawst.asyncdb.source.ContentProviderDataSource;
import org.gawst.asyncdb.source.DatabaseElementHandler;
import org.gawst.asyncdb.source.DatabaseSource;

/**
 * Class to mimick exactly the API of Android's {@link android.content.AsyncQueryHandler AsyncQueryHandler} with a {@link org.gawst.asyncdb.AsynchronousDbHelper} source
 *
 * @author Created by robUx4 on 09/01/2015.
 * @see AsyncDbHelperHandler AsyncDbHelperHandler for a cleaner version
 */
public class AsyncQueryHandler extends AsyncDatabaseHandler<Uri, Uri> {

  /**
   * Constructor similar to Android's {@link android.content.AsyncQueryHandler#AsyncQueryHandler(android.content.ContentResolver) AsyncQueryHandler()}
   * using a fixed {@link android.net.Uri} to access data.
   *
   * @param contentResolver
   * @param contentProviderUri
   */
  public AsyncQueryHandler(ContentResolver contentResolver, Uri contentProviderUri) {
    this(new ContentProviderDataSource<Uri>(contentResolver, contentProviderUri, new DatabaseElementHandler<Uri>() {
      @Override
      public String getItemSelectClause(@Nullable Uri itemToSelect) {
        throw new AssertionError("not supported");
      }

      @Override
      public String[] getItemSelectArgs(@NonNull Uri itemToSelect) {
        throw new AssertionError("not supported");
      }

      @NonNull
      @Override
      public Uri cursorToItem(@NonNull Cursor cursor) throws InvalidDbEntry {
        throw new AssertionError("not supported");
      }
    }));
  }

  /**
   * Constructor.
   *
   * @param dataSource Custom {@link org.gawst.asyncdb.source.ContentProviderDataSource} source.
   */
  public AsyncQueryHandler(ContentProviderDataSource<Uri> dataSource) {
    this(new AsynchronousDatabase<Uri, Uri>(dataSource, dataSource.contentProviderUri.getAuthority() + dataSource.contentProviderUri.getPath(), null) {
      @Override
      protected ContentValues getValuesFromData(Uri data) throws RuntimeException {
        throw new AssertionError("not supported");
      }
    }, dataSource);
  }

  /**
   * Constructor.
   *
   * @param asynchronousDbHelper The {@link org.gawst.asyncdb.AsynchronousDbHelper} database to work with.
   * @param dataSource           The {@link org.gawst.asyncdb.source.DatabaseSource} source used by the {@code asynchronousDbHelper}.
   */
  public AsyncQueryHandler(AsynchronousDbHelper<?, Uri> asynchronousDbHelper, DatabaseSource<Uri, Uri> dataSource) {
    super(asynchronousDbHelper, dataSource);
  }
}

Java Source Code List