11:25 a.m.
I am trying to set a pointcut to a field when it gets written, no matter what I do, the
set pointcut never seems to work. I am using AOP 2.0GA and JBoss 5.0GA. Here is what I
have:
aop.xml:
|
|
| <?xml version="1.0" encoding="UTF-8"?>
|
|
| <aop xmlns="urn:jboss:aop-beans:1.0">
| <aspect class="com.acme.aop.FieldAspect"/>
| <interceptor class="com.acme.aop.FieldSetterInterceptor"/>
|
|
| <bind pointcut="execution(void
$instanceof{com.acme.IMarkMe}->*(..))">
| <around aspect="com.acme.aop.FieldAspect"
name="log"/>
| </bind>
|
| <bind
pointcut="execution($instanceof{com.acme.IMarkMe}->new())">
| <around aspect="com.acme.aop.FieldAspect"
name="log"/>
| </bind>
|
| <bind pointcut="set(private java.lang.String
com.acme.aop.POJO->var2)">
| <around aspect="com.acme.aop.FieldAspect"
name="log"/>
| </bind>
|
| <bind pointcut="set(private java.lang.String
com.acme.aop.POJO->var2)">
| <interceptor-ref name="com.acme.aop.FieldSetterInterceptor"/>
| </bind>
|
|
| </aop>
|
|
FieldSetterInterceptor:
|
| package com.acme.aop;
|
| import org.apache.log4j.Logger;
| import org.jboss.aop.advice.Interceptor;
| import org.jboss.aop.joinpoint.FieldWriteInvocation;
| import org.jboss.aop.joinpoint.Invocation;
|
|
| public class FieldSetterInterceptor implements Interceptor {
|
| private static final Logger LOG = Logger.getLogger(FieldSetterInterceptor.class);
|
|
| public FieldSetterInterceptor() {
| // TODO Auto-generated constructor stub
| }
|
|
| @Override
| public String getName() {
| // TODO Auto-generated method stub
| return "FieldSetterInterceptor";
| }
|
|
| @Override
| public Object invoke(Invocation invocation) throws Throwable
| {
| if (!(invocation instanceof FieldWriteInvocation)) return
invocation.invokeNext();
| try
| {
| FieldWriteInvocation mi = (FieldWriteInvocation)invocation;
| LOG.info("<<< Entering SetInterceptor for: " +
mi.getField().getName());
| return invocation.invokeNext();
| }
| finally
| {
| LOG.info(">>> Leaving SetInterceptor");
| }
| }
|
| }
|
|
FieldAspect:
|
| package com.acme.aop;
|
| import java.lang.reflect.Field;
|
| import org.apache.log4j.Logger;
| import org.jboss.aop.joinpoint.ConstructorInvocation;
| import org.jboss.aop.joinpoint.FieldReadInvocation;
| import org.jboss.aop.joinpoint.FieldWriteInvocation;
| import org.jboss.aop.joinpoint.Invocation;
| import org.jboss.aop.joinpoint.MethodInvocation;
|
| public class FieldAspect {
|
| private static final Logger LOG = Logger.getLogger(FieldAspect.class);
|
| public FieldAspect(){
| LOG.debug("FieldAspect being instantiated");
| }
| public Object log(ConstructorInvocation invocation) throws Throwable
| {
| try
| {
| LOG.info("C: Creating using constructor " +
invocation.getConstructor());
| LOG.info("C: " + invocation.getArguments());
| return invocation.invokeNext();
| }
| finally
| {
| LOG.info("C: Done");
| }
| }
|
| public Object log(MethodInvocation invocation) throws Throwable
| {
| try
| {
| LOG.info("M: Calling method " + invocation.getMethod().getName());
| LOG.info("M: " + invocation.getArguments());
| return invocation.invokeNext();
| }
| finally
| {
| LOG.info("M: Done");
| }
| }
|
| public Object log(FieldWriteInvocation invocation) throws Throwable
| {
| LOG.info("F: setting field " + invocation.getField().getName());
| LOG.info("F: New value will be " + invocation.getValue());
| try
| {
| return invocation.invokeNext();
| }
| finally
| {
| LOG.info("F: Done");
| }
|
| }
| }
|
|
POJO:
|
| package com.acme.aop;
| public class POJO implements com.acme.IMarkMe
| {
| private String var1 = "hello";
| private String var2;
|
| public static int var3;
|
| public String getVar1() { return var1; }
| public String getVar2() { return var2; }
| public void setVar2(String str) { var2 = str; }
|
| }
|
|
I am deploying aop.xml to $JBOSS_HOME/server/all/deploy. I can see the poincuts and the
aspect and interceptor classes registered in the jmx console, however when I run the code
all the pointcuts work except for both the set pointcuts defined in aop.xml.
Am I doing something wrong?
Thanks for all you help.
Andres.
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