How to execute multiple goals via a single command ?

[Nick Pellow]

Hi,

I have 3 MOJOs in a single maven plugin. Each MOJO needs to be  
executed during specific build phases.
What is the best way to make this possible, without forcing users of  
the plugin to insert explicit executions into their pom.xml ?

i.e. is it possible to make the following configuration by doing it  
programitcally in the plugin itself?
<executions>
                    <execution>
                        <id>1</id>
                        <phase>process-sources</phase>
                        <goals>
                            <goal>first</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>2</id>
                        <phase>process-test-classes</phase>
                        <goals>
                            <goal>second</goal>
                        </goals>
                    </execution>
                    <execution>
                        <id>3</id>
                        <phase>test</phase>
                        <goals>
                            <goal>third</goal>
                        </goals>
                    </execution>
</executions>

this will result in: process-sources plugin:first process-test-classes  
plugin:second test plugin:third
being run whenever the test phase is called.

I have used the @phase <phaseName> annotation in each MOJO. These seem  
to get ignored however if the goal is not called directly?

Please let me know if you require further information regarding this.

Cheers,
Nick