To get expected result, I modified three line codes  in NewRuleCalculator.java
 line 45:   ruleMap.put(new Pattern("*/computation"), new ComputationAction2());
 line 51:   ruleMap.put(new Pattern("/computation/new-rule"), new NewRuleAction());
 line 57:   simpleConfigurator.doConfigure("src/main/java/chapters/onJoran/newrule/newRule.xml");


Below are outputs from IDE:

cd C:\opensourcecodes\qpid\logback\logback-examples; JAVA_HOME=C:\\Java\\jdk1.7.0_15 M2_HOME=C:\\Maven\\apache-maven-3.0.4 C:\\Maven\\apache-maven-3.0.4\\bin\\mvn.bat "-Dexec.args=-classpath %classpath chapters.onJoran.newRule.NewRuleCalculator" -Dexec.executable=C:\\Java\\jdk1.7.0_15\\bin\\java.exe -Dexec.classpathScope=runtime -DskipTests=true process-classes org.codehaus.mojo:exec-maven-plugin:1.2.1:exec
Scanning for projects...
                                                                       
------------------------------------------------------------------------
Building Logback Examples Module 1.0.12-SNAPSHOT
------------------------------------------------------------------------

[build-helper:add-test-source]
Test Source directory: C:\opensourcecodes\qpid\logback\logback-examples\src\test\scala added.

[resources:resources]
[debug] execute contextualize
Using 'UTF-8' encoding to copy filtered resources.
Copying 3 resources

[compiler:compile]
Compiling 1 source file to C:\opensourcecodes\qpid\logback\logback-examples\target\classes

[exec:exec]
The computation named [toto] resulted in the value 30
------------------------------------------------------------------------
BUILD SUCCESS
------------------------------------------------------------------------
Total time: 2.254s
Finished at: Mon Apr 01 13:08:33 PDT 2013
Final Memory: 11M/182M

Ming Qin

Cell Phone Number: 949-388-9898


From: mingqin@live.com
To: logback-dev@qos.ch
Subject: No expected Result from Running NewRuleCalculator.java in LogBack Example Module
Date: Sun, 31 Mar 2013 17:54:47 -0600

Hi:
  I run the NewRuleCalculator.java  to learn Joran feature - interpreter to learn new rules on the fly.

  I modified line of 57 as  

   simpleConfigurator.doConfigure("src/main/java/chapters/onJoran/newRule/newRule.xml");

  first of all, newRule.xml has  typo for xml element "new-rule" , it should be "newRule"
  after correcting above error, the NewRuleCalculator.java run fine but didn't generate expected result as "The computation named [toto] resulted in the value 30"

See below output from my IDE:


cd D:\OpenSourceCodes\logback-master\logback-examples; JAVA_HOME=D:\\Java\\jdk1.7.0_15 "\"D:\\Program Files\\NetBeans 7.3\\java\\maven\\bin\\mvn.bat\"" "-Dexec.args=-classpath %classpath chapters.onJoran.newRule.NewRuleCalculator" -Dexec.executable=D:\\Java\\jdk1.7.0_15\\bin\\java.exe -Dexec.classpathScope=runtime -DskipTests=true process-classes org.codehaus.mojo:exec-maven-plugin:1.2.1:exec
Scanning for projects...
                                                                        
------------------------------------------------------------------------
Building Logback Examples Module 1.0.12-SNAPSHOT
------------------------------------------------------------------------

[build-helper:add-test-source]
Test Source directory: D:\OpenSourceCodes\logback-master\logback-examples\src\test\scala added.

[resources:resources]
[debug] execute contextualize
Using 'UTF-8' encoding to copy filtered resources.
Copying 3 resources

[compiler:compile]
Compiling 1 source file to D:\OpenSourceCodes\logback-master\logback-examples\target\classes

[exec:exec]
------------------------------------------------------------------------
BUILD SUCCESS
------------------------------------------------------------------------
Total time: 1.532s
Finished at: Sun Mar 31 16:53:19 PDT 2013
Final Memory: 9M/24M
------------------------------------------------------------------------


Source code : downloading logback-master.zip from https://github.com/qos-ch/logback
IDE: NetBeans 7.3
JDK version:  32  bit window version Oracle JDK 1.7.0_15
Platform: window xp

Ming Qin

Cell Phone Number: 949-388-9898