这是我之前提出的问题的后续问题。
我在具有以下（缩短的）pom.xml 的项目中使用 Drools 6.1.0.Beta1：
<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>de.test.configuration</groupId>
<artifactId>someTest</artifactId>
<version>0.7.0-SNAPSHOT</version>
<packaging>jar</packaging>
<name>droolsTest</name>
<parent>
<groupId>de.test</groupId>
<artifactId>maven-parent</artifactId>
<version>0.3</version>
</parent>
<dependencies>
<!-- The Drools rule engine -->
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-core</artifactId>
<version>6.1.0.Beta1</version>
</dependency>
<dependency>
<groupId>org.drools</groupId>
<artifactId>drools-compiler</artifactId>
<version>6.1.0.Beta1</version>
</dependency>
<!-- getting maven artefacts -->
<dependency>
<groupId>org.kie</groupId>
<artifactId>kie-ci</artifactId>
<version>6.1.0.Beta1</version>
</dependency>
</dependencies>
</project>
对于内部maven，在KIE/Drools中使用，我有一个单独的settings.xml，配置了属性-Dkie.maven.settings.custom="X:\droolsmaven\settings.xml" 这个文件的内容是：
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0
http://maven.apache.org/xsd/settings-1.0.0.xsd">
<localRepository>x:/droolsmaven/repository</localRepository>
<profiles>
<profile>
<id>mavenDroolsProfile</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<repositories>
<repository>
<id>someRepo</id>
<url>http://1.2.3.4</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
<repository>
<id>central</id>
<url>http://repo1.maven.org/maven2</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
</profile>
</profiles>
</settings>
在该本地存储库中，部署了稍后使用的相应工件，该工件正在工作，并通过非 Maven 项目确认。
现在，当尝试在上述 pom 定义的 maven 项目中运行以下代码时，我得到了此代码块之后提到的错误：
public class MainKieTest {
public static void main(String[] args) {
KieServices ks = KieServices.Factory.get();
KieRepository repository = ks.getRepository();
ReleaseId releaseId = ks.newReleaseId("de.test.package", "artifact", "1.0.1");
KieContainer kieContainer = ks.newKieContainer(releaseId);
KieScanner kieScanner = ks.newKieScanner(kieContainer);
kieScanner.scanNow();
}
}
错误是：
DEBUG [main] (KieRepositoryImpl.java:92) - KieModule Lookup. ReleaseId de.test.package:artifact:1.0.1 was not in cache, checking classpath DEBUG [main] (KieRepositoryImpl.java:98) - KieModule Lookup. ReleaseId de.test.package:artifact:1.0.1 was not in cache, checking maven repository WARN [main] (MavenSettings.java:47) - Environment variable M2_HOME is not set DEBUG [main] (Logs.java:390) - Add publisher: com.google.inject.internal.InjectorImpl@5221dfe5
-----[explicit bindings]-------------------------------------------------------
0. ProviderInstanceBinding{key=Key[type=com.google.inject.Injector, annotation=[none]], source=[unknown source], scope=Scopes.NO_SCOPE, provider=Provider<Injector>} [...] lines cut for brevity 198. ConstructorBinding{key=Key[type=org.apache.maven.lifecycle.DefaultSchedules, annotation=[none]], source=ClassRealm[maven, parent: ClassRealm[maven-parent, parent: null]], scope=Scopes.SINGLETON} -----[implicit bindings]-------------------------------------------------------
-------------------------------------------------------------------------------
Exception in thread "main" java.lang.RuntimeException: org.apache.maven.project.ProjectBuildingException: Some problems were encountered while processing the POMs:
[FATAL] Non-resolvable parent POM: Could not find artifact de.test:maven-parent:pom:0.3 and 'parent.relativePath' points at wrong local POM @ line 15, column 10
at org.kie.scanner.embedder.MavenProjectLoader.parseMavenPom(MavenProjectLoader.java:21)
at org.kie.scanner.embedder.MavenProjectLoader.loadMavenProject(MavenProjectLoader.java:48)
at org.kie.scanner.Aether.<init>(Aether.java:44)
at org.kie.scanner.Aether.getAether(Aether.java:54)
at org.kie.scanner.MavenRepository.getMavenRepository(MavenRepository.java:53)
at org.kie.scanner.ArtifactResolver.<init>(ArtifactResolver.java:36)
at org.kie.scanner.KieRepositoryScannerImpl.getArtifactResolver(KieRepositoryScannerImpl.java:77)
at org.kie.scanner.KieRepositoryScannerImpl.loadArtifact(KieRepositoryScannerImpl.java:87)
at org.kie.scanner.KieRepositoryScannerImpl.loadArtifact(KieRepositoryScannerImpl.java:83)
at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.loadKieModuleFromMavenRepo(KieRepositoryImpl.java:114)
at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.getKieModule(KieRepositoryImpl.java:100)
at org.drools.compiler.kie.builder.impl.KieRepositoryImpl.getKieModule(KieRepositoryImpl.java:77)
at org.drools.compiler.kie.builder.impl.KieServicesImpl.newKieContainer(KieServicesImpl.java:106)
at de.test.configuration.kie.MainKieTest.main(MainKieTest.java:40)
Caused by: org.apache.maven.project.ProjectBuildingException: Some problems were encountered while processing the POMs:
[FATAL] Non-resolvable parent POM: Could not find artifact de.test:maven-parent:pom:0.3 and 'parent.relativePath' points at wrong local POM @ line 15, column 10
at org.apache.maven.project.DefaultProjectBuilder.build(DefaultProjectBuilder.java:363)
at org.kie.scanner.embedder.MavenEmbedder.buildProjects(MavenEmbedder.java:335)
at org.kie.scanner.embedder.MavenEmbedder.readProjects(MavenEmbedder.java:319)
at org.kie.scanner.embedder.MavenEmbedder.readProject(MavenEmbedder.java:312)
at org.kie.scanner.embedder.MavenProjectLoader.parseMavenPom(MavenProjectLoader.java:19)
... 13 more
问题似乎是，Drools/KIE 内部的 Maven 也尝试构建完整的依赖关系树，由运行 KIE 的项目的 pom.xml 给出。
恕我直言，这不应该是，因为为 Drools 部署的 Maven 工件在运行时使用，独立于用于构建项目本身的工件；这些是构建时需要的。
这个问题只是对我认为 Drools 应该如何工作的误解还是一个实际的错误？