org.osmdroid.tileprovider.modules

Class DatabaseFileArchive

java.lang.Object

org.osmdroid.tileprovider.modules.DatabaseFileArchive

All Implemented Interfaces:

IArchiveFile

public class DatabaseFileArchive
extends Object
implements IArchiveFile

This is the OSMdroid style database provider. It's an extremely simply sqlite database schema. CREATE TABLE tiles (key INTEGER PRIMARY KEY, provider TEXT, tile BLOB) where the key is the X/Y/Z coordinates bitshifted using the following algorithm key = ((z << z) + x << z) + y;

See Also:

SqlTileWriter

Field Summary

Fields

Modifier and Type	Field and Description
static String	COLUMN_KEY
static String	COLUMN_PROVIDER
static String	COLUMN_TILE
static String	TABLE
(package private) static String[]	tile_column

Constructor Summary

Constructors

Constructor and Description
DatabaseFileArchive()

Method Summary

Modifier and Type	Method and Description
void	close() Closes the archive file and releases resources.
static DatabaseFileArchive	getDatabaseFileArchive(File pFile)
byte[]	getImage(ITileSource pTileSource, long pMapTileIndex)
InputStream	getInputStream(ITileSource pTileSource, long pMapTileIndex) Get the input stream for the requested tile and tile source.
Set<String>	getTileSources() returns a list of tile source names that are available in the archive, if supported.
void	init(File pFile) initialize the file archive, such as performing initial scans, queries, opening a database, etc
void	setIgnoreTileSource(boolean pIgnoreTileSource)
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

TABLE

public static final String TABLE

See Also:

Constant Field Values

COLUMN_PROVIDER

public static final String COLUMN_PROVIDER

See Also:

Constant Field Values

COLUMN_TILE

public static final String COLUMN_TILE

See Also:

Constant Field Values

COLUMN_KEY

public static final String COLUMN_KEY

See Also:

Constant Field Values

tile_column

static final String[] tile_column

Constructor Detail

DatabaseFileArchive

public DatabaseFileArchive()

Method Detail

getDatabaseFileArchive

public static DatabaseFileArchive getDatabaseFileArchive(File pFile)
                                                  throws SQLiteException

Throws:

SQLiteException

setIgnoreTileSource

public void setIgnoreTileSource(boolean pIgnoreTileSource)

Specified by:

setIgnoreTileSource in interface IArchiveFile

Since:

6.0 If set to true, tiles from this archive will be loaded regardless of their associated tile source name

getTileSources

public Set<String> getTileSources()

Description copied from interface: IArchiveFile

returns a list of tile source names that are available in the archive, if supported. If not supported, return an empty set

Specified by:

getTileSources in interface IArchiveFile

Returns:

init

public void init(File pFile)
          throws Exception

Description copied from interface: IArchiveFile

initialize the file archive, such as performing initial scans, queries, opening a database, etc

Specified by:

init in interface IArchiveFile

Throws:

Exception

getImage

public byte[] getImage(ITileSource pTileSource,
                       long pMapTileIndex)

getInputStream

public InputStream getInputStream(ITileSource pTileSource,
                                  long pMapTileIndex)

Description copied from interface: IArchiveFile

Get the input stream for the requested tile and tile source.

Also keep in mind that the tile source has an explicit tile size in pixels, and tile source name.

Specified by:

getInputStream in interface IArchiveFile

Returns:

the input stream, or null if the archive doesn't contain an entry for the requested tile.

See Also:

TileSourceFactory

close

public void close()

Description copied from interface: IArchiveFile

Closes the archive file and releases resources.

Specified by:

close in interface IArchiveFile

toString

public String toString()

Overrides:

toString in class Object