lcavallari-642 opened a new issue, #108:
URL: https://github.com/apache/tomcat-jakartaee-migration/issues/108
In our Maven project we have an assembler submodule that uses the MOJO exec
plugin to run the migration tool on a set of dependencies. When we build the
project with mvn, it successfully builds, but with mvnd the following exception
occurs:
```
[DEBUG] joining on thread
Thread[#1733,org.apache.tomcat.jakartaee.MigrationCLI.main(),5,org.apache.tomcat.jakartaee.MigrationCLI]
[WARNING]
java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0
at org.apache.tomcat.jakartaee.MigrationCLI.main (MigrationCLI.java:88)
at org.codehaus.mojo.exec.ExecJavaMojo.doMain (ExecJavaMojo.java:375)
at org.codehaus.mojo.exec.ExecJavaMojo.doExec (ExecJavaMojo.java:364)
at org.codehaus.mojo.exec.ExecJavaMojo.lambda$execute$0
(ExecJavaMojo.java:286)
at java.lang.Thread.run (Thread.java:1570)
```
The execution is simple: `mvnd clean install -DskipTests`.
Quickly looking at the code it seems that we take for granted that there's
always going to be a logger handler:
```java
// Configure the explicit level
Logger.getGlobal().getParent().getHandlers()[0].setLevel(level);
```
but it doesn't seem to be the case.
---
This is the definition of our plugin:
```xml
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>3.5.0</version>
<executions>
<execution>
<id>migrate-java-ee-to-jakarta-ee-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>java</goal>
</goals>
<configuration>
<mainClass>org.apache.tomcat.jakartaee.MigrationCLI</mainClass>
<arguments>
<argument>-profile=EE</argument>
<argument>-logLevel=INFO</argument>
<argument>${project.build.directory}/original-dependencies</argument>
<argument>${project.build.directory}/migrated-dependencies</argument>
</arguments>
</configuration>
</execution>
</executions>
</plugin>
```
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