在 Xtext 版本 2.17.0 上以编程方式生成 Xtext 项目会产生错误

Question

我正在使用 Xtext 版本 2.17.0 (Java 11) 以编程方式生成 Xtext 项目。整个过程是：

在我自己的 Maven 项目中，我以编程方式生成那些 Xtext 项目。
生成项目时，我将语法写入运行time 项目，并在父 Xtext 项目上运行 mvn compile，以生成语法工件（如运行ning Eclipse 中的 Wme2 工作流 IDE).
我将 org.eclipse.ui.console;bundle-version="3.8.100" 添加到 ui 项目的清单中。然后还有一个 jar 到 Bundle-ClassPath，所以最终的 Manifest 看起来像这样：

Bundle-ManifestVersion: 2
Bundle-Name: org.mealy.ui
Bundle-Vendor: My Company
Bundle-Version: 1.0.0.qualifier
Bundle-SymbolicName: org.mealy.ui; singleton:=true
Bundle-ActivationPolicy: lazy
Require-Bundle: org.mealy,org.mealy.ide,org.eclipse.xtext.ui,org.eclipse
 .xtext.ui.shared,org.eclipse.xtext.ui.codetemplates.ui,org.eclipse.ui.e
 ditors;bundle-version="3.5.0",org.eclipse.ui.ide;bundle-version="3.5.0"
 ,org.eclipse.ui,org.eclipse.compare,org.eclipse.xtext.builder,org.eclip
 se.xtext.xbase.lib;bundle-version="2.14.0",org.eclipse.xtend.lib;bundle
 -version="2.14.0";resolution:=optional,org.eclipse.ui.console;bundle-ve
 rsion="3.8.100"
Import-Package: org.apache.log4j
Bundle-RequiredExecutionEnvironment: JavaSE-11
Automatic-Module-Name: org.mealy.ui
Export-Package: org.mealy.ui.internal,org.mealy.ui.quickfix,org.mealy.ui
 .contentassist
Bundle-Activator: org.mealy.ui.internal.MealyActivator
Bundle-ClassPath: lib/mealyMachine-1.0-SNAPSHOT.jar,
 .

之后，我将生成一些源代码文件等。
然后我在父 Xtext 项目上手动运行ning mvn package 以便 build 所有项目并获取代表 Eclipse 插件和语言服务器的 jars。

但是当运行在 Xtext 的 2.17.0 版本（带有 Java 11）的最后一点上添加了一些东西到 [=44= 的 MANIFEST.MF ] Xtext 项目和 mvn 包失败并出现以下错误：

[ERROR] Failed to execute goal org.eclipse.tycho:tycho-p2-plugin:1.3.0:p2-metadata-default (default-p2-metadata-default) on project org.mealy.ui: Execution default-p2-metadata-default of goal org.eclipse.tycho:tycho-p2-plugin:1.3.0:p2-metadata-default failed. IllegalArgumentException -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.eclipse.tycho:tycho-p2-plugin:1.3.0:p2-metadata-default (default-p2-metadata-default) on project org.mealy.ui: Execution default-p2-metadata-default of goal org.eclipse.tycho:tycho-p2-plugin:1.3.0:p2-metadata-default failed.
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
    at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
    at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
    at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
    at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
    at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
    at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
    at org.codehaus.classworlds.Launcher.main(Launcher.java:47)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-p2-metadata-default of goal org.eclipse.tycho:tycho-p2-plugin:1.3.0:p2-metadata-default failed.
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
    ... 21 more
Caused by: java.lang.IllegalArgumentException
    at org.eclipse.tycho.p2.impl.publisher.P2GeneratorImpl.getCanonicalArtifact(P2GeneratorImpl.java:206)
    at org.eclipse.tycho.p2.impl.publisher.P2GeneratorImpl.generateMetadata(P2GeneratorImpl.java:148)
    at org.eclipse.tycho.plugins.p2.P2MetadataMojo.attachP2Metadata(P2MetadataMojo.java:157)
    at org.eclipse.tycho.plugins.p2.P2MetadataMojo.execute(P2MetadataMojo.java:116)
    at org.eclipse.tycho.plugins.p2.P2MetadataDefaultMojo.execute(P2MetadataDefaultMojo.java:33)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
    ... 22 more

UIXtext项目的Manifest.mf最后看是这样的：

Bundle-ManifestVersion: 2
Bundle-Name: org.mealy.ui
Bundle-Vendor: My Company
Bundle-Version: 1.0.0.qualifier
Bundle-SymbolicName: org.mealy.ui; singleton:=true
Bundle-ActivationPolicy: lazy
Require-Bundle: org.mealy,org.mealy.ide,org.eclipse.xtext.ui,org.eclipse
 .xtext.ui.shared,org.eclipse.xtext.ui.codetemplates.ui,org.eclipse.ui.e
 ditors;bundle-version="3.5.0",org.eclipse.ui.ide;bundle-version="3.5.0"
 ,org.eclipse.ui,org.eclipse.compare,org.eclipse.xtext.builder,org.eclip
 se.xtext.xbase.lib;bundle-version="2.14.0",org.eclipse.xtend.lib;bundle-version="2.14.0";bundle
 -version="2.14.0";resolution:=optional,org.eclipse.ui.console;bundle-ve
 rsion="3.8.100",
 org.eclipse.ui.editors,
 org.eclipse.xtext.xbase.lib;bundle-version="2.14.0",
 org.eclipse.xtext.ui.shared
Import-Package: org.apache.log4j
Bundle-RequiredExecutionEnvironment: JavaSE-11
Automatic-Module-Name: org.mealy.ui
Export-Package: org.mealy.ui.internal,org.mealy.ui.quickfix,org.mealy.ui
 .contentassist,
 org.mealy.ui.contentassist
Bundle-Activator: org.mealy.ui.internal.MealyActivator
Bundle-ClassPath: lib/mealyMachine-1.0-SNAPSHOT.jar,
 .

运行使用 Xtext 2.16.0 和 Java 8 的相同代码不会产生此类错误，并且当运行ning 我列表中的第 5 点时不会向清单写入任何内容。

可能是什么问题？

Answer 1

看起来您确实偶然发现了一个错误。作为解决方法，您可以尝试禁用清单合并

            eclipsePlugin = {
                enabled = true
                manifest = {
                    merge = false
                }
            }

在 Xtext 版本 2.17.0 上以编程方式生成 Xtext 项目会产生错误

Generating Xtext projects programmatically on Xtext version 2.17.0 produces error

xtext

java-11