org.osmdroid.tileprovider.modules

Class SqliteArchiveTileWriter

java.lang.Object

org.osmdroid.tileprovider.modules.SqliteArchiveTileWriter

All Implemented Interfaces:

IFilesystemCache

public class SqliteArchiveTileWriter
extends Object
implements IFilesystemCache

An implementation of IFilesystemCache based on the original TileWriter. It writes tiles to a sqlite database. It does NOT support expiration and provides more of a MOBAC like functionality (non-expiring file archives). Uses the same schema as MOBAC osm sqlite and the DatabaseFileArchive

https://github.com/osmdroid/osmdroid/issues/348

Since:

5.2 7/8/16.

See Also:

SqlTileWriter, DatabaseFileArchive

Field Summary

Fields

Modifier and Type	Field and Description
(package private) File	db_file
(package private) static boolean	hasInited
(package private) SQLiteDatabase	mDatabase
(package private) int	questimate

Constructor Summary

Constructors

Constructor and Description
SqliteArchiveTileWriter(String outputFile)

Method Summary

Modifier and Type	Method and Description
boolean	exists(ITileSource pTileSource, long pMapTileIndex) return true if the map file for download already exists
Long	getExpirationTimestamp(ITileSource pTileSource, long pMapTileIndex) Gets the cache expiration timestamp of a tile
Cursor	getTileCursor(String[] pPrimaryKeyParameters)
Drawable	loadTile(ITileSource pTileSource, long pMapTileIndex) Gets the tile drawable
void	onDetach() Used when the map engine is shutdown, use it to perform any clean up activities and to terminate any background threads
boolean	remove(ITileSource tileSource, long pMapTileIndex) Removes a tile from the cache, see issue https://github.com/osmdroid/osmdroid/issues/426
boolean	saveFile(ITileSource pTileSourceInfo, long pMapTileIndex, InputStream pStream, Long pExpirationTime) Save an InputStream as the specified tile in the file system cache for the specified tile source.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

db_file

final File db_file

mDatabase

final SQLiteDatabase mDatabase

questimate

final int questimate

See Also:

Constant Field Values

hasInited

static boolean hasInited

Constructor Detail

SqliteArchiveTileWriter

public SqliteArchiveTileWriter(String outputFile)
                        throws Exception

Throws:

Exception

Method Detail

saveFile

public boolean saveFile(ITileSource pTileSourceInfo,
                        long pMapTileIndex,
                        InputStream pStream,
                        Long pExpirationTime)

Description copied from interface: IFilesystemCache

Save an InputStream as the specified tile in the file system cache for the specified tile source.

Specified by:

saveFile in interface IFilesystemCache

Parameters:

pTileSourceInfo - a tile source

pMapTileIndex - a tile

pStream - an InputStream

Returns:

exists

public boolean exists(ITileSource pTileSource,
                      long pMapTileIndex)

Description copied from interface: IFilesystemCache

return true if the map file for download already exists

Specified by:

exists in interface IFilesystemCache

Returns:

onDetach

public void onDetach()

Description copied from interface: IFilesystemCache

Used when the map engine is shutdown, use it to perform any clean up activities and to terminate any background threads

Specified by:

onDetach in interface IFilesystemCache

remove

public boolean remove(ITileSource tileSource,
                      long pMapTileIndex)

Description copied from interface: IFilesystemCache

Removes a tile from the cache, see issue https://github.com/osmdroid/osmdroid/issues/426

Specified by:

remove in interface IFilesystemCache

Returns:

true if it was removed, false otherwise

getExpirationTimestamp

public Long getExpirationTimestamp(ITileSource pTileSource,
                                   long pMapTileIndex)

Description copied from interface: IFilesystemCache

Gets the cache expiration timestamp of a tile

Specified by:

getExpirationTimestamp in interface IFilesystemCache

Returns:

cache expiration timestamp in time since UTC epoch (in milliseconds), or null if expiration timestamp is not supported or if the tile is not cached

getTileCursor

public Cursor getTileCursor(String[] pPrimaryKeyParameters)

Parameters:

pPrimaryKeyParameters -

Returns:

Since:

5.6.5

loadTile

public Drawable loadTile(ITileSource pTileSource,
                         long pMapTileIndex)
                  throws Exception

Description copied from interface: IFilesystemCache

Gets the tile drawable

Specified by:

loadTile in interface IFilesystemCache

Throws:

Exception

Since:

5.6.5