Re: Cache problems with jxmapviewer2 in NetBeans Platform

Don't know why it doesn't work in NetBeans Platform applications, though 
I can reproduce it.

A workaround is to override TileFactory.setTileCache:


tileFactory.setTileCache(new TileCache() {
     @Override
     public void put(URI uri, byte[] bimg, BufferedImage bi) {
         try {
             super.put(uri, bimg, bi);
             int index = uri.toString().lastIndexOf("/");
             String name = uri.toString().substring(index+1);
             File outputfile = new File(cacheDir+"/"+name);
             ImageIO.write(bi, "png", outputfile);
         } catch (IOException ex) {
             Exceptions.printStackTrace(ex);
         }
     }
});

It's not perfect, but a start, and evidence that caching can work, if 
you set it explicitly.

Gj


On 4-6-2017 13:26, geertjan wielenga wrote:
>
> Maybe this will help:
>
> https://github.com/mitll/vizlinc/blob/master/vizlinc_module/src/edu/mit/ll/vizlinc/components/MapTopComponent.java 
>
>
> Looks like an interesting NetBeans Platform project:
>
> https://github.com/mitll/vizlinc
>
> Gj
>
>
> On 4-6-2017 12:53, geertjan wielenga wrote:
>>
>>
>> On 15-5-2017 13:06, Patrik Karlsson wrote:
>>> Hi,
>>>
>>> I'm building a platform application using jxmapviewer2 
>>> https://github.com/msteiger/jxmapviewer2 and can't get the caching 
>>> to work. The map renders just fine but the tiles are not cached.
>>>
>>> Caching works in the example
>>> https://github.com/msteiger/jxmapviewer2/blob/master/examples/src/sample3_interaction/Sample3.java 
>>>
>>>
>>> and I have sucessfully added caching to MapKit in Sample6
>>> https://github.com/msteiger/jxmapviewer2/blob/master/examples/src/sample6_mapkit/Sample6.java 
>>>
>>
>> There is no cache in the above sample.
>>
>> Gj
>>
>>
>>>
>>> However, it fails when I try to do it in NB 8.2 platform using 
>>> Windows 7 and Java 8u131.
>>> The cache directory gets created but is always empty.
>>>
>>> Could this be related to the platform and the usage of 
>>> java.net.ResponseCache?
>>>
>>>
>>> I have created the following repo 
>>> https://github.com/trixon/netbeans-jxmapviewer2.git
>>> The map related code is in https://github.com/trixon/netbeans-
>>> jxmapviewer2/blob/master/maptest/src/main/java/se/trixon/jxmapviewer2/maptest/MapKitTopComponent.java 
>>>
>>>
>>>     private void init() {
>>>         setLayout(new java.awt.GridLayout());
>>>         final JXMapKit jXMapKit = new JXMapKit();
>>>         TileFactoryInfo info = new OSMTileFactoryInfo();
>>>         DefaultTileFactory tileFactory = new DefaultTileFactory(info);
>>>
>>>         // Setup local file cache
>>>         File cacheDir = new File(System.getProperty("user.home") + 
>>> File.separator + ".jxmapviewer2");
>>> LocalResponseCache.installResponseCache(info.getBaseURL(), cacheDir, 
>>> false);
>>>
>>>         jXMapKit.setTileFactory(tileFactory);
>>>
>>>         jXMapKit.setZoom(16);
>>>         add(jXMapKit);
>>>     }
>>>
>>> /Patrik
>>
>