Description Masayuki Takahashi 2004-10-20 23:36:40 EDT

Hoge.java
package jp.co.techfirm.masayuki.study.aspectj;
import java.io.IOException;

import org.apache.log4j.Logger;

/**
 * Aspectをweavingされるクラス
 * @author masayuki
 */
public class Hoge extends HogeHoge{
	
	static Logger log;
	static{
		try{
			log = Logger.getLogger(Hoge.class.getName( ));
			log.info( "start Hoge static constructor" );
			log.info( "end Hoge static constructor" );
		}catch( Exception e ){
			e.printStackTrace();
		}
	}
	
	private String fielda;
	private boolean flag = false;

	public Hoge(){
		log.info( "start Hoge constructor" );
		log.info( "end Hoge constructor" );
	}
	
	public Hoge( String field ){
		this.fielda = field;
	}
	
	public void method1(){
		log.info( "start method1" );
		log.info( "end method1" );
		this.flag = true;
	}
	
	public int method2(){
		log.info( "start method2" );
		log.info( "end method2" );
		return 500;
	}
	
	public String method3( String foo ){
		log.info( "start method3" );
		log.info( "end method3" );
		return foo;
	}
	
	public String method4( String foo, String bar ){
		log.info( "start method4" );
		log.info( "end method4" );
		return foo + bar;
	}
	
	public void method5(){
		log.info( "start method5" );
		throw new RuntimeException( "test" );
	}
	
	public String method6() throws IOException{
		log.info( "start method6" );
		throw new IOException( "test" );
	}
	
	public String method7(){
		log.info( "start method7" );
		fielda = "hoge";
		return fielda;
	}
	
	public Object method8( Object o ){
		log.info( "start method8" );
		return o;
	}
	
	public boolean flagState(){
		return flag;
	}
}
--

HogeHoge.java
--
package jp.co.techfirm.masayuki.study.aspectj;

import org.apache.log4j.Logger;

public class HogeHoge{

	static Logger log = Logger.getLogger(HogeHoge.class.getName( ));

	public HogeHoge(){
		log.info( "start HogeHoge constructor" );
		log.info( "end HogeHoge constructor" );
	}
	
}
--

Test.java
--

package jp.co.techfirm.masayuki.study.aspectj.declare;

import java.util.Arrays;

public class Test {
	public static void main( String[] argv ){
		System.out.println( 
				Test.class.getName() + " entends " + 
				Test.class.getSuperclass() + " implements " + 
				Arrays.asList( Test.class.getInterfaces() ) 
		);
		System.out.println( 
				Sub.class.getName() + " entends " + 
				Sub.class.getSuperclass() + " implements " + 
				Arrays.asList( Sub.class.getInterfaces() ) 
		);
		System.out.println( 
				Child.class.getName() + " entends " + 
				Child.class.getSuperclass() + " implements " + 
				Arrays.asList( Child.class.getInterfaces() ) 
		);
	}

	public void do_someting(){	
	}

}
--

Sub.java
--
package jp.co.techfirm.masayuki.study.aspectj.declare;

public class Sub extends Test {

}
--

Child.java
--
package jp.co.techfirm.masayuki.study.aspectj.declare;

public class Child extends Test {

}

AddConstructor.java
--
package jp.co.techfirm.masayuki.study.aspectj.intertype;
import jp.co.techfirm.masayuki.study.aspectj.*;
import org.apache.log4j.Logger;

public aspect AddConstructor {
	static Logger log = Logger.getLogger( "aspect" );

	public HogeHoge.new( String str ){
		log.info( "HogeHoge( String str )." );
		log.info( "str: " + str );
	}

}
--

AddMethod.java
--
package jp.co.techfirm.masayuki.study.aspectj.intertype;
import jp.co.techfirm.masayuki.study.aspectj.*;
import org.apache.log4j.Logger;

public aspect AddMethod {
	static Logger log = Logger.getLogger( "aspect" );

	public void HogeHoge.hello(){
		log.info( "hello HogeHoge." );
	}

}
--

AddValue.java
--
package jp.co.techfirm.masayuki.study.aspectj.intertype;
import jp.co.techfirm.masayuki.study.aspectj.*;
import org.apache.log4j.Logger;

public aspect AddValue {
	static Logger log = Logger.getLogger( "aspect" );

	public String HogeHoge.addedValue = "hogehoge";
	
}
--

I compiled these sources with ant and ajc. so

--
     [iajc] java.lang.NullPointerException
     [iajc]     at org.aspectj.weaver.AsmRelationshipProvider.checkerMunger(Asm
elationshipProvider.java:51)
     [iajc]     at org.aspectj.weaver.Checker.match(Checker.java:58)
     [iajc]     at org.aspectj.weaver.bcel.BcelClassWeaver.match(BcelClassWeave
.java:985)
     [iajc]     at org.aspectj.weaver.bcel.BcelClassWeaver.match(BcelClassWeave
.java:791)
     [iajc]     at org.aspectj.weaver.bcel.BcelClassWeaver.weave(BcelClassWeave
.java:291)
     [iajc]     at org.aspectj.weaver.bcel.BcelClassWeaver.weave(BcelClassWeave
.java:77)
     [iajc]     at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:417

     [iajc]     at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:390

     [iajc]     at org.aspectj.weaver.bcel.BcelWeaver.weave(BcelWeaver.java:316

     [iajc]     at org.aspectj.ajdt.internal.core.builder.AjBuildManager.weaveA
dGenerateClassFiles(AjBuildManager.java:256)
     [iajc]     at org.aspectj.ajdt.internal.core.builder.AjBuildManager.doBuil
(AjBuildManager.java:156)
     [iajc]     at org.aspectj.ajdt.internal.core.builder.AjBuildManager.batchB
ild(AjBuildManager.java:70)
     [iajc]     at org.aspectj.ajdt.ajc.AjdtCommand.doCommand(AjdtCommand.java:
9)
     [iajc]     at org.aspectj.ajdt.ajc.AjdtCommand.runCommand(AjdtCommand.java
53)
     [iajc]     at org.aspectj.tools.ajc.Main.run(Main.java:217)
     [iajc]     at org.aspectj.tools.ajc.Main.runMain(Main.java:155)
     [iajc]     at org.aspectj.tools.ant.taskdefs.AjcTask.executeInSameVM(AjcTa
k.java:1047)
     [iajc]     at org.aspectj.tools.ant.taskdefs.AjcTask.execute(AjcTask.java:
04)
     [iajc]     at org.apache.tools.ant.Task.perform(Task.java:341)
     [iajc]     at org.apache.tools.ant.Target.execute(Target.java:309)
     [iajc]     at org.apache.tools.ant.Target.performTasks(Target.java:336)
     [iajc]     at org.apache.tools.ant.Project.executeTarget(Project.java:1339

     [iajc]     at org.apache.tools.ant.Project.executeTargets(Project.java:125
)
     [iajc]     at org.apache.tools.ant.Main.runBuild(Main.java:609)
     [iajc]     at org.apache.tools.ant.Main.start(Main.java:196)
     [iajc]     at org.apache.tools.ant.Main.main(Main.java:235)
--
why?