com.nutiteq.datasources

Class MBTilesTileDataSource

java.lang.Object

com.nutiteq.datasources.TileDataSource

com.nutiteq.datasources.MBTilesTileDataSource

public class MBTilesTileDataSource
extends TileDataSource

A tile data source that loads tiles from a local Sqlite database.
The database must contain table "tiles" with the following fields:
"zoom_level" (tile zoom level), "tile_column" (tile x coordinate),
"tile_row" (tile y coordinate), "tile_data" (compressed tile image).

Field Summary

Fields inherited from class com.nutiteq.datasources.TileDataSource

swigCMemOwn

Constructor Summary

Constructors

Constructor and Description
MBTilesTileDataSource(int minZoom, int maxZoom, java.lang.String path) Constructs a MBTilesTileDataSource object.
MBTilesTileDataSource(int minZoom, int maxZoom, java.lang.String path, MBTilesScheme scheme) Constructs a MBTilesTileDataSource object with specified tile scheme.
MBTilesTileDataSource(long cPtr, boolean cMemoryOwn)
MBTilesTileDataSource(java.lang.String path) Constructs a MBTilesTileDataSource object.

Method Summary

Modifier and Type	Method and Description
void	delete()
protected void	finalize()
static long	getCPtr(MBTilesTileDataSource obj)
MapBounds	getDataExtent() Returns the extent of this data source.
StringMap	getMetaData() Get data source metadata information. Possible parameters can be found in MBTiles specification.
TileData	loadTile(MapTile mapTile) Loads the specified tile.
static MBTilesTileDataSource	swigCreatePolymorphicInstance(long cPtr, boolean cMemoryOwn) Creates a polymorphic instance of the given native object.
protected void	swigDirectorDisconnect()
java.lang.String	swigGetClassName() Returns the actual class name of this object.
java.lang.Object	swigGetDirectorObject() Returns the connected director object.
void	swigReleaseOwnership()
void	swigTakeOwnership()

Methods inherited from class com.nutiteq.datasources.TileDataSource

getCPtr, getMaxZoom, getMinZoom, getProjection, notifyTilesChanged

Methods inherited from class java.lang.Object

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

Constructor Detail

MBTilesTileDataSource

public MBTilesTileDataSource(long cPtr,
                             boolean cMemoryOwn)

MBTilesTileDataSource

public MBTilesTileDataSource(java.lang.String path)

Constructs a MBTilesTileDataSource object. TMS tile scheme is used,
min and max zoom levels are automatically detected.

Parameters:

path - The path to the local Sqlite database file.

MBTilesTileDataSource

public MBTilesTileDataSource(int minZoom,
                             int maxZoom,
                             java.lang.String path)

Constructs a MBTilesTileDataSource object. TMS tile scheme is used.

Parameters:

minZoom - The minimum zoom level supported by this data source.

maxZoom - The maximum zoom level supported by this data source.

path - The path to the local Sqlite database file.

MBTilesTileDataSource

public MBTilesTileDataSource(int minZoom,
                             int maxZoom,
                             java.lang.String path,
                             MBTilesScheme scheme)

Constructs a MBTilesTileDataSource object with specified tile scheme.

Parameters:

minZoom - The minimum zoom level supported by this data source.

maxZoom - The maximum zoom level supported by this data source.

path - The path to the local Sqlite database file.

scheme - Tile scheme to use.

Method Detail

getCPtr

public static long getCPtr(MBTilesTileDataSource obj)

finalize

protected void finalize()

Overrides:

finalize in class TileDataSource

delete

public void delete()

Overrides:

delete in class TileDataSource

swigDirectorDisconnect

protected void swigDirectorDisconnect()

Overrides:

swigDirectorDisconnect in class TileDataSource

swigReleaseOwnership

public void swigReleaseOwnership()

Overrides:

swigReleaseOwnership in class TileDataSource

swigTakeOwnership

public void swigTakeOwnership()

Overrides:

swigTakeOwnership in class TileDataSource

swigCreatePolymorphicInstance

public static MBTilesTileDataSource swigCreatePolymorphicInstance(long cPtr,
                                                                  boolean cMemoryOwn)

Creates a polymorphic instance of the given native object. This is used internally by the SDK.

getMetaData

public StringMap getMetaData()

Get data source metadata information.
Possible parameters can be found in MBTiles specification.

Returns:

Map containing meta data information (parameter names mapped to parameter values).

getDataExtent

public MapBounds getDataExtent()

Returns the extent of this data source. Extent is the minimal bounding box encompassing all the tiles at maximum zoom level.

Returns:

The minimal bounding box for the tiles.

loadTile

public TileData loadTile(MapTile mapTile)

Description copied from class: TileDataSource

Loads the specified tile.

Overrides:

loadTile in class TileDataSource

Parameters:

mapTile - The tile to load.

Returns:

The tile data. If the tile is not available, null may be returned.

swigGetClassName

public java.lang.String swigGetClassName()

Returns the actual class name of this object. This is used internally by the SDK.

Overrides:

swigGetClassName in class TileDataSource

Returns:

The class name of this object.

swigGetDirectorObject

public java.lang.Object swigGetDirectorObject()

Returns the connected director object. This is used internally by the SDK.

Overrides:

swigGetDirectorObject in class TileDataSource

Returns:

The connected director object or null if director is not connected.