Re: [Jsynthlib-devel] Problem with DeviceListWriter

[Frankie F. <jsy...@te...>]

I can run it from ant update-drivers with no problem:

$ ant update-drivers
Buildfile: /home/frankster/jsynthlib/trunk/JSynthLib/build.xml

init:

build-code:
    [javac] Compiling 2 source files to
/home/frankster/jsynthlib/trunk/JSynthLib/build/bin
    [javac] Note:
/home/frankster/jsynthlib/trunk/JSynthLib/core/DeviceListWriter.java
uses unchecked or unsafe operations.
    [javac] Note: Recompile with -Xlint:unchecked for details.

update-drivers:
     [java] In dir .:
     [java]   Checking synthdrivers/RolandTD6
     [java]     Found synthdrivers.RolandTD6.RolandTD6Device
...

I've got java 1.7 - which version are you using?

$ javac -version
javac 1.7.0_15



On 13/05/2013 20:20, Packe wrote:
> Hi,
>
> I'm trying to write a driver for my Roland D50. I have added the files and wanted to generate the synthdrivers.properties file. 
>
> Unfortunately the DeviceListDriver application fails. It creates an empty file only containing the two first lines of comments in the properties file.
>
> I have added debug prints which gives me this:
>
> In dir .:
>   Checking synthdrivers/AccessVirus
>   Checking synthdrivers/AlesisA6
>   Checking synthdrivers/AlesisDM5
>   Checking synthdrivers/AlesisDMPro
>   Checking synthdrivers/AlesisQS
>   Checking synthdrivers/BehringerFCB1010
> java.lang.ClassNotFoundException: AccessVirusDevice
> 	at core.DeviceListWriter$MyClassLoader.loadClass(DeviceListWriter.java:336)
> 	at core.DeviceListWriter.addClasses(DeviceListWriter.java:72)
> 	at core.DeviceListWriter.main(DeviceListWriter.java:389)
> java.lang.ClassNotFoundException: AlesisA6Device
> 	at core.DeviceListWriter$MyClassLoader.loadClass(DeviceListWriter.java:336)
> 	at core.DeviceListWriter.addClasses(DeviceListWriter.java:72)
> 	at core.DeviceListWriter.main(DeviceListWriter.java:389)
> java.lang.ClassNotFoundException: AlesisDM5Device
> 	at core.DeviceListWriter$MyClassLoader.loadClass(DeviceListWriter.java:336)
> 	at core.DeviceListWriter.addClasses(DeviceListWriter.java:72)
> 	at core.DeviceListWriter.main(DeviceListWriter.java:389)
> […]
>
> When I look at the code I get a bit suspicious about this part:
>
> String devName = synthDevices[j].substring(0, synthDevices[j].indexOf('.'));
> try {
>     if(verbose)
>         System.out.println("  Checking " + actSynthDir.getPath());
> 	        	    	
>    Class deviceclass = loader.loadClass(devName, true);
>
> The exception occurs on the last line of this snippet. From the substring line I guess only the class name is used as argument for the class loader. This should not work according to the API.
>
> Is it just me who runs into this problem? 
>
> BR
> /Pascal
>
>
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