| java.lang.Object | |||
| ↳ | com.carto.datasources.TileDataSource | ||
| ↳ | com.carto.datasources.CacheTileDataSource | ||
| ↳ | com.carto.datasources.MemoryCacheTileDataSource | ||
Class Overview
A tile data source that loads tiles from another tile data source
and caches them in memory. This cache is not persistent, tiles
will be cleared once the application closes. Default cache capacity is 6MB.
Summary
| Public Constructors | |||||||||||
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MemoryCacheTileDataSource(TileDataSource dataSource)
Constructs a MemoryCacheTileDataSource object from tile data source.
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| Public Methods | |||||||||||
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| void |
clear()
Clear the cache.
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| synchronized void | delete() | ||||||||||
| long |
getCapacity()
Returns the tile cache capacity.
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| TileData |
loadTile(MapTile mapTile)
Loads the specified tile.
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| void |
setCapacity(long capacityInBytes)
Sets the cache capacity.
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[Expand]
Inherited Methods | |||||||||||
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From class
com.carto.datasources.CacheTileDataSource
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From class
com.carto.datasources.TileDataSource
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From class
java.lang.Object
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Public Constructors
public MemoryCacheTileDataSource (TileDataSource dataSource)
Constructs a MemoryCacheTileDataSource object from tile data source.
Parameters
| dataSource | The datasource to be cached. |
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Public Methods
public void clear ()
Clear the cache.
public synchronized void delete ()
public long getCapacity ()
Returns the tile cache capacity.
Returns
- The tile cache capacity in bytes.
public TileData loadTile (MapTile mapTile)
Loads the specified tile.
Note: the tile coordinate system used here is vertically flipped relative to layer tile coordinate system.
Parameters
| mapTile | The tile to load. |
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Returns
- The tile data. If the tile is not available, null may be returned.
public void setCapacity (long capacityInBytes)
Sets the cache capacity.
Parameters
| capacityInBytes | The new tile cache capacity in bytes. |
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