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[aspectj-users] NullPointerException
|
I got NullPointerException when
. placing abstract aspcet(1) that has abstract pointcut and advice in jar file
. overriding abstract pointcut using the joinpoint that has cflow in the
aspect(2)
here is the part of stack trace:
[iajc] java.lang.NullPointerException
[iajc] at
org.aspectj.weaver.patterns.CflowPointcut.concretize1(CflowPointcut.java:126)
[iajc] at
org.aspectj.weaver.patterns.AndPointcut.concretize1(AndPointcut.java:88)
[iajc] at
org.aspectj.weaver.patterns.ReferencePointcut.concretize1(ReferencePointcut.java:270)
[iajc] at org.aspectj.weaver.patterns.Pointcut.concretize(Pointcut.java:127)
-- (1) AbstractAspect.aj --
public abstract aspect AbstractAspect{
public abstract pointcut directCall();
before(): directCall(){
System.out.println("direct");
}
}
-- TestAspect.aj --
public aspect TestAspect extends AbstractAspect{
public pointcut directCall():
execution(void Test.doSayHello(..))
&& cflow(execution(void Test.direct(..)))
;
}
-- Test.java --
public class Test{
public static void main(String[] arguments){
Test test = new Test();
test.sayHello();
test.doSayHello();
}
public void sayHello(){
doSayHello();
}
public void doSayHello(){
System.out.println("hello.");
}
}
-- a part of build.xml --
<target name="compile" depends="distabstractaspect">
<iajc
srcdir="src"
destDir="${build}"
classpath="aspectjrt.jar"
aspectPath="${dist}/abstractaspect.jar"
/>
</target>
----
When not placing aspect(1) in jar or not using cflow in the aspect(2),
I didn't get NullPointerException.
I used JDK1.4.1_02 on Windows2000(ja) system.
NAKAGUCHI Takao
takao-n@xxxxxxxxxxxxxxx