Adding spring-aspects causes compilation errors

[zzantozz]

Hey all, I've been using Spring and Spring AOP (dynamic proxies) for a long time, but I'm just now looking at tossing some bytecode weaving into the mix. Right now, I'm trying to get a basic @Configurable object to work--i.e. be injectable by Spring when instantiated outside of Spring. I have a simple project set up using Maven and the aspectj-maven-plugin for build-time weaving. I have two simple classes. One has a main method, and one is an aspect with a pointcut that prints to stdout when that main method executes. I can compile and run this simple example just fine. As soon as I add org.springframework:spring-aspects--it seems to need to be an "aspectLibrary" in the plugin's configuration as well as a project dependency--I get this compilation error:
[ERROR] can't determine superclass of missing type org.springframework.transaction.interceptor.Transa ctionAspectSupport
when batch building BuildConfig[null] #Files=2 AopXmls=#0
[Xlint:cantFindType]

That looks to me like something from spring-tx, so I add that as a dependency, and then I get:
[ERROR] can't determine annotations of missing type javax.persistence.Entity
when weaving type com.bar.SomeBean
when weaving classes
when weaving
when batch building BuildConfig[null] #Files=2 AopXmls=#0
[Xlint:cantFindType]

After I add org.hibernate.javax.persistence:hibernate-jpa-2.0-api, it's back to working. Surely I'm doing something wrong here. Do I seriously have to have spring-tx and JPA on my classpath just to be able to use @Configurable?

[zzantozz]

I've found that there's a compiler option to change the level of "can't find type" errors. It seems that it can only be set using the aspectj compiler's -Xlintfile option and providing a properties file that overrides the defaults. You add the property cantFindType = warning, and it changes from a compiler error to a warning, letting the compilation go ahead. Does anyone know how to do something like this in the aspectj maven plugin? It seems to only support "-Xlint", which only seems to be able to set coarse-grained error checking options and not specifically change the level of a particular check.

[PiotrD]

<build>
		<plugins>
			<plugin>

				<groupId>org.codehaus.mojo</groupId>
				<artifactId>aspectj-maven-plugin</artifactId>
				<version>1.4</version>
				<dependencies>
					<dependency>
						<groupId>org.aspectj</groupId>
						<artifactId>aspectjrt</artifactId>
						<version>${aspectj.version}</version>
					</dependency>
					<dependency>
						<groupId>org.aspectj</groupId>
						<artifactId>aspectjtools</artifactId>
						<version>${aspectj.version}</version>
					</dependency>
				</dependencies>
				<executions>
					<execution>
						<goals>
							<goal>compile</goal>
						</goals>
					</execution>
				</executions>
				<configuration>
                                        <Xlint>warning</Xlint>
					<aspectLibraries>
						<aspectLibrary>
							<groupId>org.springframework</groupId>
							<artifactId>spring-aspects</artifactId>
						</aspectLibrary>
					</aspectLibraries>
					<source>1.6</source>
					<target>1.6</target>
				</configuration>

			</plugin>
		</plugins>
	</build>