javamavenaopaspectjaspectj-maven-plugin
AspectJ module dependency with Maven - How get working the Inter-type declarations methods of a dependency module
This is my situation:
I have a maven project my-project-aj-dependency composed by two jar modules:
my-project-aj-dependencyJarWithAJ(where I have an Inter-type declaration, see theahah()method below inside the aspectAppWithAj_Ahah.aj)my-project-aj-dependencyJarWithoutAJ
My problem is that I would like to use some declared method defined in the aspect of the first module inside the second module, but probably I missed something.
My poms configuration is the following:
Maven project pom (my-project-aj-dependency):
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<name>MyProjectAjDependency</name>
<modelVersion>4.0.0</modelVersion>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependency</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<modules>
<!-- <module>TestMaven-ejb</module> -->
<module>my-project-aj-dependencyJarWithAJ</module>
<module>my-project-aj-dependencyJarWithoutAJ</module>
</modules>
<properties>
<maven.compiler.target>1.7</maven.compiler.target>
<maven.compiler.source>1.7</maven.compiler.source>
<aspectj.version>1.8.9</aspectj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithAj</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithoutAj</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<pluginManagement>
<plugins>
</plugins>
</pluginManagement>
</build>
</project>
Maven module 1 pom (my-project-aj-dependencyJarWithAJ):
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependency</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithAJ</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>my-project-aj-dependencyJarWithAJ</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>1.8.9</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java-version}</source>
<target>${java-version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>install</id>
<phase>install</phase>
<goals>
<goal>sources</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<!--
Have to use version 1.2 since version 1.3 does not appear to work
with ITDs
-->
<version>1.2</version>
<dependencies>
<!--
You must use Maven 2.0.9 or above or these are ignored (see
MNG-2972)
-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
</dependencies>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<configuration>
<outxml>true</outxml>
<source>${java-version}</source>
<target>${java-version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
Maven module 2 pom (my-project-aj-dependencyJarWithoutAJ):
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependency</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithoutAJ</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>my-project-aj-dependencyJarWithoutAJ</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithAj</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>${java-version}</source>
<target>${java-version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>install</id>
<phase>install</phase>
<goals>
<goal>sources</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<!--
Have to use version 1.2 since version 1.3 does not appear to work
with ITDs
-->
<version>1.2</version>
<dependencies>
<!--
You must use Maven 2.0.9 or above or these are ignored (see
MNG-2972)
-->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${org.aspectj-version}</version>
</dependency>
</dependencies>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<configuration>
<outxml>true</outxml>
<source>${java-version}</source>
<target>${java-version}</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
Where AppWithAj.java is:
package org.my.project.aj.dependencyJarWithAJ;
public class AppWithAj {
public static void main( String[] args ){
System.out.println( "Hello World!" );
}
}
and AppWithAj_Ahah.aj is:
package org.my.project.aj.dependencyJarWithAJ;
public aspect AppWithAj_Ahah {
public String AppWithAj.ahah(){
return "Ahahahah!";
}
}
and finally App.java is:
package org.my.project.aj.dependencyJarWithoutAJ;
import org.my.project.aj.dependencyJarWithAJ.AppWithAj;
public class App {
public static void main( String[] args ) {
System.out.println( "Hello World! " + new AppWithAj().ahah());
}
}
Solution
Your solution is way too complicated:
- The AspectJ (AJ) module needs the AJ Maven plugin and a dependency on aspectjrt. So far, so good.
- But the declared aspect only affects a class within its own module, extending it via ITD. So there is no need to use the AJ compiler on the pure Java module which only calls a method from the AJ module. It is irrelevant that the called method was created by ITD, to the other module it looks just like normal Java.
- Consequently, all the non-AJ module needs is a normal dependency on the AJ module because it uses one of its classes. The AJ runtime dependency is transitive and should be used automatically.
Update:
You asked for POMs, here they are.
Root POM:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependency</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>MyProjectAjDependency</name>
<packaging>pom</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.source-target.version>1.7</java.source-target.version>
<aspectj.version>1.8.9</aspectj.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithAj</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithoutAj</artifactId>
<version>${project.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.5.1</version>
<configuration>
<source>${java.source-target.version}</source>
<target>${java.source-target.version}</target>
<!-- IMPORTANT -->
<useIncrementalCompilation>false</useIncrementalCompilation>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>1.8</version>
<configuration>
<!--<showWeaveInfo>true</showWeaveInfo>-->
<source>${java.source-target.version}</source>
<target>${java.source-target.version}</target>
<Xlint>ignore</Xlint>
<complianceLevel>${java.source-target.version}</complianceLevel>
<encoding>${project.build.sourceEncoding}</encoding>
<!--<verbose>true</verbose>-->
<!--<warn>constructorName,packageDefaultMethod,deprecation,maskedCatchBlocks,unusedLocals,unusedArguments,unusedImport</warn>-->
</configuration>
<executions>
<execution>
<!-- IMPORTANT -->
<phase>process-sources</phase>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.4.0</version>
</plugin>
</plugins>
</pluginManagement>
</build>
<modules>
<module>my-project-aj-dependencyJarWithAJ</module>
<module>my-project-aj-dependencyJarWithoutAJ</module>
</modules>
</project>
Module with AspectJ:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependency</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>my-project-aj-dependencyJarWithAJ</artifactId>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
</dependency>
</dependencies>
</project>
Plain Java module:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependency</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>my-project-aj-dependencyJarWithoutAJ</artifactId>
<build>
<plugins>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<configuration>
<mainClass>org.my.project.aj.dependencyJarWithoutAJ.App</mainClass>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>com.madx</groupId>
<artifactId>my-project-aj-dependencyJarWithAj</artifactId>
</dependency>
</dependencies>
</project>
Please note: I have added the Exec Maven plugin just for demo purposes, so you can do something like this:
mvn clean install
mvn -pl my-project-aj-dependencyJarWithoutAJ exec:java
Then you should see something like this on the console:
(...)
[INFO] --- exec-maven-plugin:1.4.0:java (default-cli) @ my-project-aj-dependencyJarWithoutAJ ---
Hello World! Ahahahah!
Remove Exec Maven from both the root and the plain Java POMs in order to get even shorter POMs.
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