ArtistMerger.java :  » Music-Sound » five » org » devtcg » five » provider » util » Android Open Source

package org.devtcg.five.provider.util;

import java.io.File;
import java.io.FileNotFoundException;

import org.devtcg.five.provider.AbstractTableMerger;
import org.devtcg.five.provider.Five;
import org.devtcg.five.provider.FiveProvider;

import android.content.ContentProvider;
import android.content.ContentUris;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.DatabaseUtils;
import android.net.Uri;

public final class ArtistMerger extends AbstractTableMerger
{
  private final ContentValues mTmpValues = new ContentValues();

  private final FiveProvider mProvider;

  public ArtistMerger(FiveProvider provider)
  {
    super(provider.getDatabase(), Five.Music.Artists.SQL.TABLE, Five.Music.Artists.CONTENT_URI);
    mProvider = provider;
  }

  @Override
  public void notifyChanges(Context context)
  {
    /* PlaylistSongs merger will do this for everyone after counts are updated. */
  }

  @Override
  public void deleteRow(Context context, ContentProvider diffs, Cursor diffsCursor)
  {
    throw new UnsupportedOperationException();
  }

  private static void rowToContentValues(Cursor cursor, ContentValues values)
  {
    values.clear();
    DatabaseUtils.cursorLongToContentValues(cursor, Five.Music.Artists._SYNC_ID, values);
    DatabaseUtils.cursorLongToContentValues(cursor, Five.Music.Artists._SYNC_TIME, values);
    DatabaseUtils.cursorStringToContentValues(cursor, Five.Music.Artists.MBID, values);
    DatabaseUtils.cursorStringToContentValues(cursor, Five.Music.Artists.NAME, values);
    DatabaseUtils.cursorLongToContentValues(cursor, Five.Music.Artists.DISCOVERY_DATE, values);
  }

  private void mergePhotoColumn(Context context, Cursor cursor, long actualId)
  {
    String photoUri = cursor.getString(cursor.getColumnIndexOrThrow(Five.Music.Artists.PHOTO));
    if (photoUri != null)
    {
      try {
        long tmpId = cursor.getLong(cursor.getColumnIndexOrThrow(Five.Music.Artists._ID));
        File photoFile = FiveProvider.getArtistPhoto(tmpId, true);
        if (photoFile.renameTo(FiveProvider.getArtistPhoto(actualId, false)) == false)
          return;
      } catch (FileNotFoundException e) {
        return;
      }

      ContentValues values = mTmpValues;
      values.clear();
      values.put(Five.Music.Artists.PHOTO,
        Five.Music.Artists.CONTENT_URI.buildUpon()
          .appendPath(String.valueOf(actualId))
          .appendPath("photo")
          .build().toString());
      mProvider.updateInternal(ContentUris.withAppendedId(mTableUri, actualId),
        values, null, null);
    }
  }

  @Override
  public void insertRow(Context context, ContentProvider diffs, Cursor diffsCursor)
  {
    rowToContentValues(diffsCursor, mTmpValues);
    Uri uri = mProvider.insertInternal(mTableUri, mTmpValues);
    if (uri != null)
      mergePhotoColumn(context, diffsCursor, ContentUris.parseId(uri));
  }

  @Override
  public void updateRow(Context context, ContentProvider diffs, long id, Cursor diffsCursor)
  {
    rowToContentValues(diffsCursor, mTmpValues);
    mProvider.updateInternal(mTableUri, mTmpValues, Five.Music.Artists._ID + " = ?",
      new String[] { String.valueOf(id) });
    mergePhotoColumn(context, diffsCursor, id);
  }
}