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improve sorting of results returned by buildSongQuery()

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This commit is contained in:
Adrian Ulrich 2016-10-30 13:30:45 +01:00
parent b469cb6c0a
commit ca3ce0897c
2 changed files with 27 additions and 30 deletions
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51
src/ch/blinkenlights/android/vanilla/MediaAdapter.java
View File

@ -124,10 +124,6 @@ public class MediaAdapter
* The constraint used for filtering, set by the search box.
*/
private String mConstraint;
/**
* The sort order for use with buildSongQuery().
*/
private String mSongSort;
/**
* The human-readable descriptions for each sort mode.
*/
@ -136,7 +132,12 @@ public class MediaAdapter
* An array ORDER BY expressions for each sort mode. %1$s is replaced by
* ASC or DESC as appropriate before being passed to the query.
*/
private String[] mSortValues;
private String[] mAdapterSortValues;
/**
* Same as mAdapterSortValues, but describes the query to do if we
* are returning songs for a `foreign' adapter (which migt have different column names)
*/
private String[] mSongSortValues;
/**
* The index of the current of the current sort mode in mSortValues, or
* the inverse of the index (in which case sort should be descending
@ -191,18 +192,18 @@ public class MediaAdapter
mStore = MediaStore.Audio.Artists.EXTERNAL_CONTENT_URI;
mFields = new String[] { MediaStore.Audio.Artists.ARTIST };
mFieldKeys = new String[] { MediaStore.Audio.Artists.ARTIST_KEY };
mSongSort = MediaUtils.DEFAULT_SORT;
mSortEntries = new int[] { R.string.name, R.string.number_of_tracks };
mSortValues = new String[] { "artist_key %1$s", "number_of_tracks %1$s,artist_key %1$s" };
mAdapterSortValues = new String[] { "artist_key %1$s", "number_of_tracks %1$s,artist_key %1$s" };
mSongSortValues = new String[] { "artist_key %1$s,track", "artist_key %1$s,track" /* cannot sort by number_of_tracks */ };
break;
case MediaUtils.TYPE_ALBUM:
mStore = MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI;
mFields = new String[] { MediaStore.Audio.Albums.ALBUM, MediaStore.Audio.Albums.ARTIST };
// Why is there no artist_key column constant in the album MediaStore? The column does seem to exist.
mFieldKeys = new String[] { MediaStore.Audio.Albums.ALBUM_KEY, "artist_key" };
mSongSort = MediaUtils.ALBUM_SORT;
mSortEntries = new int[] { R.string.name, R.string.artist_album, R.string.artist_year_album, R.string.number_of_tracks, R.string.date_added };
mSortValues = new String[] { "album_key %1$s", "artist_key %1$s,album_key %1$s", "artist_key %1$s,minyear %1$s,album_key %1$s", "numsongs %1$s,album_key %1$s", "_id %1$s" };
mAdapterSortValues = new String[] { "album_key %1$s", "artist_key %1$s,album_key %1$s", "artist_key %1$s,minyear %1$s,album_key %1$s", "numsongs %1$s,album_key %1$s", "_id %1$s" };
mSongSortValues = new String[] { "album_key %1$s,track", "artist_key %1$s,album_key %1$s,track", "artist_key %1$s,year %1$s,album_key %1$s,track", "album_key %1$s,track", "album_id %1$s,track" };
break;
case MediaUtils.TYPE_SONG:
mStore = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
@ -211,9 +212,10 @@ public class MediaAdapter
mSortEntries = new int[] { R.string.name, R.string.artist_album_track, R.string.artist_album_title,
R.string.artist_year_album, R.string.album_track,
R.string.year, R.string.date_added, R.string.song_playcount };
mSortValues = new String[] { "title_key %1$s", "artist_key %1$s,album_key %1$s,track", "artist_key %1$s,album_key %1$s,title_key %1$s",
"artist_key %1$s,year %1$s,album_key %1$s, track", "album_key %1$s,track",
mAdapterSortValues = new String[] { "title_key %1$s", "artist_key %1$s,album_key %1$s,track", "artist_key %1$s,album_key %1$s,title_key %1$s",
"artist_key %1$s,year %1$s,album_key %1$s,track", "album_key %1$s,track",
"year %1$s,title_key %1$s","_id %1$s", SORT_MAGIC_PLAYCOUNT };
mSongSortValues = mAdapterSortValues;
// Songs covers are cached per-album
mCoverCacheType = MediaUtils.TYPE_ALBUM;
coverCacheKey = MediaStore.Audio.Albums.ALBUM_ID;
@ -223,7 +225,8 @@ public class MediaAdapter
mFields = new String[] { MediaStore.Audio.Playlists.NAME };
mFieldKeys = null;
mSortEntries = new int[] { R.string.name, R.string.date_added };
mSortValues = new String[] { "name %1$s", "date_added %1$s" };
mAdapterSortValues = new String[] { "name %1$s", "date_added %1$s" };
mSongSortValues = null;
mExpandable = true;
break;
case MediaUtils.TYPE_GENRE:
@ -231,7 +234,8 @@ public class MediaAdapter
mFields = new String[] { MediaStore.Audio.Genres.NAME };
mFieldKeys = null;
mSortEntries = new int[] { R.string.name };
mSortValues = new String[] { "name %1$s" };
mAdapterSortValues = new String[] { "name %1$s" };
mSongSortValues = null;
break;
default:
throw new IllegalArgumentException("Invalid value for type: " + type);
@ -255,7 +259,7 @@ public class MediaAdapter
*/
private String getFirstSortColumn() {
int mode = mSortMode < 0 ? ~mSortMode : mSortMode; // get current sort mode
String column = SPACE_SPLIT.split(mSortValues[mode])[0];
String column = SPACE_SPLIT.split(mAdapterSortValues[mode])[0];
if(column.endsWith("_key")) { // we want human-readable string, not machine-composed
column = column.substring(0, column.length() - 4);
}
@ -307,14 +311,12 @@ public class MediaAdapter
sortDir = "ASC";
}
String sortStringRaw = mSortValues[mode];
// Use the song-sort mapping if we are returning songs
String sortStringRaw = (returnSongs ? mSongSortValues[mode] : mAdapterSortValues[mode]);
String[] enrichedProjection = projection;
String[] enrichedProjection;
// Magic sort mode: sort by playcount
if (sortStringRaw == SORT_MAGIC_PLAYCOUNT) {
// special case, no explicit column to sort
enrichedProjection = projection;
ArrayList<Long> topSongs = (new PlayCountsHelper(mContext)).getTopSongs(4096);
int sortWeight = -1 * topSongs.size(); // Sort mode is actually reversed (default: mostplayed -> leastplayed)
@ -325,16 +327,11 @@ public class MediaAdapter
}
sb.append(" ELSE 0 END %1s");
sortStringRaw = sb.toString();
} else {
// enrich projection with sort column to build alphabet later
} else if (returnSongs == false) {
// This is an 'adapter native' query: include the first sorting column
// in the projection to make it useable for the fast-scroller
enrichedProjection = Arrays.copyOf(projection, projection.length + 1);
enrichedProjection[projection.length] = getFirstSortColumn();
if (returnSongs && mType != MediaUtils.TYPE_SONG) {
// We are in a non-song adapter but requested to return songs - sorting
// can only be done by using the adapters default sort mode :-(
sortStringRaw = mSongSort;
}
}
String sort = String.format(sortStringRaw, sortDir);

6
src/ch/blinkenlights/android/vanilla/MediaUtils.java
View File

@ -91,17 +91,17 @@ public class MediaUtils {
* The default sort order for media queries. First artist, then album, then
* track number.
*/
public static final String DEFAULT_SORT = "artist_key,album_key,track";
private static final String DEFAULT_SORT = "artist_key,album_key,track";
/**
* The default sort order for albums. First the album, then tracknumber
*/
public static final String ALBUM_SORT = "album_key,track";
private static final String ALBUM_SORT = "album_key,track";
/**
* The default sort order for files. Simply use the path
*/
public static final String FILE_SORT = "_data";
private static final String FILE_SORT = "_data";
/**
* Cached random instance.