org.mapfish.print.map

Class ParallelMapTileLoader

java.lang.Object

org.mapfish.print.map.ParallelMapTileLoader

All Implemented Interfaces:

OrderedResultsExecutor.ResultCollector<MapTileTask>

public class ParallelMapTileLoader
extends java.lang.Object
implements OrderedResultsExecutor.ResultCollector<MapTileTask>

An instance of this class is in charge of loading in parallel the tiles of a single !map block.

Since a lot of stuff is done in //, a lot of care has to be put on protecting the shared resources. One of the big ones is the DirectContent (dc) or the PDFWriter. For those, a lock on context.getPdfLock() is used.

This class uses a global OrderedResultsExecutor to do the things in // and a BlockingSimpleTarget to know when everything is finished.

Constructor Summary

Constructors

Constructor and Description
ParallelMapTileLoader(RenderingContext context, com.itextpdf.text.pdf.PdfContentByte dc)

Method Summary

Modifier and Type	Method and Description
void	addTileToLoad(MapTileTask task) Schedule a tile to be loaded and rendered using the given task.
void	handle(MapTileTask mapTileTaskResult) Called each time a result is available, in the order the tiles were scheduled to be loaded.
void	waitForCompletion() Wait for all the tiles to be loaded and rendered.

Methods inherited from class java.lang.Object

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

Constructor Detail

ParallelMapTileLoader

public ParallelMapTileLoader(RenderingContext context,
                             com.itextpdf.text.pdf.PdfContentByte dc)

Method Detail

addTileToLoad

public void addTileToLoad(MapTileTask task)

Schedule a tile to be loaded and rendered using the given task.

waitForCompletion

public void waitForCompletion()

Wait for all the tiles to be loaded and rendered.

handle

public void handle(MapTileTask mapTileTaskResult)

Called each time a result is available, in the order the tiles were scheduled to be loaded. For one PDF file, not called in //.

Specified by:

handle in interface OrderedResultsExecutor.ResultCollector<MapTileTask>