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[aspectj-users] StackOverflow error
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Environment:
AspectJ 1.6.0
JDK 6u10
Background info:
I've coded an Aspect that would run a particular method a specific number of
times. I've created an annotation that can be used to annotate any method
that you want to run multiple times
RunMultipleAspectTestApp is the driver class. When I set the
RunMultiple.counter to something less than 900, it works great.
But when I raise it to 1000 or more, I get a java.lang.StackOverflow error.
I googled and saw that StackOverFlow error occur
due to infinite recursion as noted in this document:
http://www.eclipse.org/aspectj/doc/released/faq.html#q:infiniterecursion
Do I have my pointcut defined incorrectly? Could someone please help me with
the pointcut definition for the "repeat" advice?
************ RunMultipleAspectTestApp.java - START **************
package com.xxxx.aop.util;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.xxxx.util.annotation.RunMultiple;
public class RunMultipleAspectTestApp {
private final Log logger = LogFactory.getLog(getClass());
public static void main(String[] args) {
RunMultipleAspectTestApp rmata = new RunMultipleAspectTestApp();
rmata.runMe();
rmata.runMe("Hello", "World");
}
@RunMultiple
public void runMe() {
if (logger.isDebugEnabled()) {
logger.debug("Hello Jack");
}
}
@RunMultiple(counter = 950)
public void runMe(String greeting, String name) {
if (logger.isDebugEnabled()) {
logger.debug(greeting + " " + name);
}
}
}
************ RunMultipleAspectTestApp.java - END **************
************ RunMultiple.java - START **************
package com.xxxx.util.annotation;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.METHOD)
public @interface RunMultiple {
/**
* Number of times a method should be invoked
*/
int counter() default 1;
}
************ RunMultiple.java - END**************
The RunMultipleAspect has a repeat (After) advice which is called on any
method annotated with the RunMultiple annotation. RunMultipleAspect
also intercepts object construction (AfterReturning) and caches the object
that is created so it can reuse the object in the repeat advice.
The repeat advice looks up the RunMultiple.counter value and then invokes
the object method if 'RunMultipleAspect.count < RunMultiple.counter'
************ RunMultipleAspect.java - START **************
package com.xxxx.aop.util;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.AfterReturning;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.CodeSignature;
import org.aspectj.lang.reflect.MethodSignature;
import com.xxxx.util.annotation.RunMultiple;
/**
* Aspect to replace the following construct
*
* ...
* int counter = 10000;
* for (int i=0; i < counter; i++) {
* greet();
* }
*
* public void greet() {
* ...
* ...
* }
*
* with this construct:
*
* @RunMultiple(counter=1000)
* public void greet() {
* ...
* }
*
*/
@Aspect
public class RunMultipleAspect {
private final Log logger = LogFactory.getLog(getClass());
private int count = 0; // keeps track of how many times a method has been
executed
private String methodName; // keeps track of method name since we could
have multiple (overloaded) methods annotated
private Object obj; // object instance that was created once
@After("execution(@com.xxxx.util.annotation.RunMultiple * *.*(..)) &&
!within(RunMultipleAspect)")
public void repeat(JoinPoint jp) throws ClassNotFoundException,
IllegalArgumentException, IllegalAccessException,
InvocationTargetException, InstantiationException {
Method method = ((MethodSignature) jp.getSignature()).getMethod();
printArguments(jp);
// doing this to store the current method name
String tempMethodName = jp.getTarget().getClass().getName() + "."
+ method.getName() + this.getArgumentTypes(jp);
if (!tempMethodName.equals(methodName)) {
this.methodName = jp.getTarget().getClass().getName() + "."
+ method.getName() + this.getArgumentTypes(jp);
this.count = 0;
}
RunMultiple rmAnnotation = method.getAnnotation(RunMultiple.class);
if (logger.isTraceEnabled()) {
logger.trace("rmAnnotation.toString(): " + rmAnnotation.toString());
}
if (logger.isTraceEnabled()) {
logger.trace("count: " + count + " :: " + rmAnnotation.counter());
}
if (++count < rmAnnotation.counter()) {
if (logger.isTraceEnabled()) {
logger.trace("using object " + obj.hashCode());
logger.trace(obj.getClass().getName() + "." + method.getName());
}
method.invoke(obj, jp.getArgs());
}
}
/**
* Stores the object instance in 'obj' the first time it is created so I
can
* call methods on that instance
*/
@AfterReturning("execution(*.new(..)) && !within(RunMultipleAspect)")
public void setObjectAtConstruction(JoinPoint jp) {
if (logger.isTraceEnabled()) {
logger.trace("jp.getTarget(): " + jp.getTarget().hashCode()
+ ", jp.getThis(): " + jp.getThis().hashCode());
}
if (obj == null) {
this.obj = jp.getTarget();
if (logger.isTraceEnabled()) {
logger.trace("creating object: " + obj.hashCode());
}
} else {
if (logger.isTraceEnabled()) {
logger.trace("object created earlier: " + obj.hashCode());
}
}
}
private String getArgumentTypes(JoinPoint jp) {
Class<?>[] argTypes = ((CodeSignature) jp.getSignature())
.getParameterTypes();
if (argTypes != null && argTypes.length > 0) {
StringBuilder sb = new StringBuilder("(");
for (int ar = 0; ar < argTypes.length; ar++) {
sb.append(argTypes[ar].getName());
if (ar < argTypes.length - 1) {
sb.append(",");
}
}
sb.append(")");
return sb.toString();
}
return "";
}
private void printArguments(JoinPoint jp) {
Object[] args = jp.getArgs();
String[] argNames = ((CodeSignature) jp.getSignature())
.getParameterNames();
Class<?>[] argTypes = ((CodeSignature) jp.getSignature())
.getParameterTypes();
for (int i = 0; i < args.length; i++) {
if (logger.isTraceEnabled()) {
logger.trace(argTypes[i].getName() + "." + argNames[i] + "="
+ args[i]);
}
}
}
}
************ RunMultipleAspect.java - END **************
My aop.xml looks like this:
<aspects>
<aspect name="com.xxxx.aop.util.RunMultipleAspect" />
<weaver options="-verbose -showWeaveInfo -debug">
<include within="com.xxxx.aop.util..*" />
<exclude within="com.xxxx.aop.util.RunMultipleAspect" />
</weaver>
</aspects>
******************** Output/Error log: **************************
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
rmAnnotation.toString(): @com.xxxx.util.annotation.RunMultiple(counter=950)
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - count: 929 :: 950
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - using object
14779369
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe
2008/07/02 16:30:32:281 CDT [DEBUG] RunMultipleAspectTestApp - Hello World
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
java.lang.String.greeting=Hello
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
java.lang.String.name=World
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
rmAnnotation.toString(): @com.xxxx.util.annotation.RunMultiple(counter=950)
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - count: 930 :: 950
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - using object
14779369
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe
2008/07/02 16:30:32:281 CDT [DEBUG] RunMultipleAspectTestApp - Hello World
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
java.lang.String.greeting=Hello
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
java.lang.String.name=World
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
rmAnnotation.toString(): @com.xxxx.util.annotation.RunMultiple(counter=950)
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - count: 931 :: 950
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - using object
14779369
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe
2008/07/02 16:30:32:281 CDT [DEBUG] RunMultipleAspectTestApp - Hello World
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
java.lang.String.greeting=Hello
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
java.lang.String.name=World
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
rmAnnotation.toString(): @com.xxxx.util.annotation.RunMultiple(counter=950)
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - count: 932 :: 950
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect - using object
14779369
2008/07/02 16:30:32:281 CDT [TRACE] RunMultipleAspect -
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.main(RunMultipleAspectTestApp.java:16)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
... 7 more
.......
.......
.......
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
... 1012 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
... 1017 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
........
........
........
Caused by: java.lang.reflect.InvocationTargetException
... 1024 more
Caused by: java.lang.reflect.InvocationTargetException
... 1024 more
Caused by: java.lang.StackOverflowError
at java.text.DecimalFormat.subformat(Unknown Source)
at java.text.DecimalFormat.format(Unknown Source)
at java.text.DecimalFormat.format(Unknown Source)
at java.text.SimpleDateFormat.zeroPaddingNumber(Unknown Source)
at java.text.SimpleDateFormat.subFormat(Unknown Source)
at java.text.SimpleDateFormat.format(Unknown Source)
at java.text.SimpleDateFormat.format(Unknown Source)
at java.text.DateFormat.format(Unknown Source)
at org.apache.commons.logging.impl.SimpleLog.log(SimpleLog.java:294)
at org.apache.commons.logging.impl.SimpleLog.trace(SimpleLog.java:416)
at
com.xxxx.aop.util.RunMultipleAspect.printArguments(RunMultipleAspect.java:175)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:115)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
at
com.xxxx.aop.util.RunMultipleAspectTestApp.runMe(RunMultipleAspectTestApp.java:52)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.xxxx.aop.util.RunMultipleAspect.repeat(RunMultipleAspect.java:142)
Any help is greatly appreciated.
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