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From "Siwiec, Tomasz" <>
Subject Problem with dual classloader.
Date Wed, 25 May 2005 08:09:54 GMT
I have my own task and collection implemented and I use it like that:
    <taskdef name="myTask" classname="com...MyTask"
classpathref="std.classpath" loaderref="myTask"/>
    <typedef name="download_files" classname="com.....AntFileInfoSet"
classpathref="std.classpath" loaderref="myTask"/>
    <typedef name="file" classname="com.....AntFileInfo"
classpathref="std.classpath" loaderref="myTask"/>
    <myTask .......>        
		<download_files id="fl.flieInfos">
            	<file name="xxx" .../>
            	<file name="xxx" .../>

My task and collection jar file is located at std.classpath. The problem
is the AntFileInfoSet class is loaded by different classloader then
AnFileInfoSet class defined by section <download_files/>. In that case I
always get ClassCastException doing casting in AntFileInfoSet: 
    public List getAntFileInfos() {
        if (refid != null) {
            return ((AntFileInfoSet)
getProject().getReference(refid)).getAntFileInfos(); !!!!!!
        } else {
            return antFileInfos;

In case I copy my jar file to ANT_HOME\lib directory and then run ant,
everything is ok as only one classloader is used.
As you can see I use loaderref="myTask" property but it doesn't help.
Can you help me?

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