Re: openMapApplet and .jar data

Hi Barney,

Thanks for the update, I'll add the same change into the codebase.

I think that behavior is kind of weird, too, but the InputReaders seem
to be more flexible than their names suggest. I've noticed that under
certain conditions, certain readers seem to be able to read input that
you would think would be handled by other readers. My guess is that
Java is doing the right thing with the input streams underneath the
covers.

Cheers,

Don

On Thursday, March 21, 2002, at 11:13 PM, Wrightson, Barney
( Contractor ) wrote:

> Hi Don (and list),
>
> I have solved my problem with this, but I am not sure why noone else
> has the
> same problem. What I did is to catch the exception when trying to open
> the
> jar file and return false. This then means that the resource is then
> tried
> as a URLInputReader and this works. I am not sure why it isn't just
> loaded
> as a URL straight away instead of using the JarInputReader - does this
> give
> some benefit over the URLInputReader?
>
> thanks,
> Barney
>
> -----Original Message-----
> From: Don Dietrick [mailto:dietrick@bbn.com]
> Sent: Friday, 15 March 2002 6:40 AM
> To: Wrightson, Barney ( Contractor )
> Cc: 'openmap-users@bbn.com'
> Subject: Re: openMapApplet and .jar data
>
>
> Hi Barney,
>
> I've not seen this before. What do your properties look like for the
> DTEDLayer? The dted path directory should be the relative path from the
> root inside the data.jar file to the dted directory, with no reference
> to the data.jar file directly.
>
> - Don
>
>
> On Wednesday, March 13, 2002, at 06:20 PM, Wrightson, Barney
> ( Contractor ) wrote:
>
>> Hi guys,
>> I am trying to get layer data including DTED and Political
>> Boundaries working with the data in a .jar file, and have tried
>> changing the
>> com.bbn.openmap.io.BinaryFile.java file to use
>> Thread.currentThread().getContextClassLoader().getResource(name); but
>> this
>> results in th following error (using JRE Plugin 1.3.1_02, latest
>> apache,
>> NT4, Netscape 6.2):
>>
>> *** ERROR ***
>> access denied (java.io.FilePermission \\host.name.com\openmap\data.jar
>> read)
>> *************
>> java.security.AccessControlException: access denied
>> (java.io.FilePermission
>> \\host.name.com\openmap\data.jar read)
>> at java.security.AccessControlContext.checkPermission(Unknown
>> Source)
>> at java.security.AccessController.checkPermission(Unknown Source)
>> at java.lang.SecurityManager.checkPermission(Unknown Source)
>> at java.lang.SecurityManager.checkRead(Unknown Source)
>> at java.util.zip.ZipFile.<init>(Unknown Source)
>> at java.util.jar.JarFile.<init>(Unknown Source)
>> at java.util.jar.JarFile.<init>(Unknown Source)
>> at com.bbn.openmap.io.JarInputReader.reopen(JarInputReader.java:73)
>> at com.bbn.openmap.io.JarInputReader.<init>(JarInputReader.java:58)
>> at
>> com.bbn.openmap.io.BinaryFile.setJarInputReader(BinaryFile.java:212)
>> at com.bbn.openmap.io.BinaryFile.<init>(BinaryFile.java:131)
>> at
>> com.bbn.openmap.io.BinaryBufferedFile.<init>(BinaryBufferedFile.java:84)
>> at
>> com.bbn.openmap.io.BinaryBufferedFile.<init>(BinaryBufferedFile.java:96)
>> at
>> com.bbn.openmap.layer.shape.SpatialIndex.<init>(SpatialIndex.java:178)
>> at
>> com.bbn.openmap.layer.shape.SpatialIndex.locateAndSetShapeData
>> (SpatialIndex.
>> java:709)
>> at
>> com.bbn.openmap.layer.shape.ShapeLayer.setProperties(ShapeLayer.java:179)
>> at
>> com.bbn.openmap.util.ComponentFactory.create(ComponentFactory.java:129)
>> at com.bbn.openmap.LayerHandler.getLayers(LayerHandler.java:307)
>> at
>>
> com.bbn.openmap.gui.OverviewMapHandler.setProperties(OverviewMapHandler.java
>> :334)
>> at
>> com.bbn.openmap.gui.OverviewMapHandler.init(OverviewMapHandler.java:242)
>> at
>>
> com.bbn.openmap.gui.OverviewMapHandler.findAndInit(OverviewMapHandler.java:
>> 9
>> 02)
>> at
>> com.bbn.openmap.gui.OverviewMapHandler.setBeanContext
>> (OverviewMapHandler.jav
>> a:966)
>> at java.beans.beancontext.BeanContextSupport.add(Unknown Source)
>> at
>> com.bbn.openmap.PropertyHandler.createComponents(PropertyHandler.java:515)
>> at com.bbn.openmap.app.OpenMapApplet.init(OpenMapApplet.java:142)
>> at sun.applet.AppletPanel.run(Unknown Source)
>> at java.lang.Thread.run(Unknown Source)
>>
>> where my applet is at http://host.name.com/openmap/
>> with 2 jar files, openmap.jar that contains the altered
>> BinaryFile.class
>> and data.jar that contains a layer I am creating and the DTED and
>> Political
>> Boundaries data
>>
>> Any ideas why java is acting as if the jar is a local file that I don't
>> hava
>> permission to access?
>>
>> thanks,
>> Barney
>>
>> --
>> [To unsubscribe to this list send an email to "majdart@bbn.com"
>> with the following text in the BODY of the message "unsubscribe
>> openmap-users"]
>>
>>

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Don Dietrick, dietrick@bbn.com
BBN Technologies, Cambridge, MA
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
> --
> [To unsubscribe to this list send an email to "majdart@bbn.com"
> with the following text in the BODY of the message "unsubscribe
> openmap-users"]
>

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