I create the Xtext (v2.19) projects with the following options:
- Eclipse plug-in
- Create feature
- Create Update site
- Preferred Build System: Gradle
- Build Language Server: Fat Jar
- Source Layout: Plain
This produces projects that have both Gradle and a Maven/Tycho builds. The Gradle build is where the LS FatJar is produced, and the Maven build is where the Updatesite is produced. This works good when the Xtext grammar generate/import Ecore models.
However, I switch the Xtext grammar to 'import' an Xcore model instead, I figured out how to get the Gradle build of the DSL project to work by adding the last dependency below:
dependencies {
mwe2 'org.eclipse.emf:org.eclipse.emf.mwe2.launch'
mwe2 "org.eclipse.xtext:org.eclipse.xtext.common.types:${xtextVersion}"
mwe2 "org.eclipse.xtext:org.eclipse.xtext.xtext.generator:${xtextVersion}"
mwe2 'org.eclipse.xtext:xtext-antlr-generator'
// added for Xcore support
mwe2 ('org.eclipse.emf:org.eclipse.emf.ecore.xcore:+'){
exclude group: 'org.antlr', module: 'antlr-runtime'
}
}
However, a similar change as follows to the pom.xml did not work:
<dependencies>
<dependency>
<groupId>org.eclipse.emf</groupId>
<artifactId>org.eclipse.emf.mwe2.launch</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>org.eclipse.xtext</groupId>
<artifactId>org.eclipse.xtext.common.types</artifactId>
<version>${xtextVersion}</version>
</dependency>
<dependency>
<groupId>org.eclipse.xtext</groupId>
<artifactId>org.eclipse.xtext.xtext.generator</artifactId>
<version>${xtextVersion}</version>
</dependency>
<dependency>
<groupId>org.eclipse.xtext</groupId>
<artifactId>org.eclipse.xtext.xbase</artifactId>
<version>${xtextVersion}</version>
</dependency>
<dependency>
<groupId>org.eclipse.xtext</groupId>
<artifactId>xtext-antlr-generator</artifactId>
<version>2.1.1</version>
</dependency>
<!-- Added for Xcore support -->
<dependency>
<groupId>org.eclipse.emf</groupId>
<artifactId>org.eclipse.emf.ecore.xcore</artifactId>
<version>1.11.0</version>
</dependency>
</dependencies>
I get the following error:
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java (mwe2Launcher) on project: Execution mwe2Launcher of goal org.codehaus.mojo:exec-maven-plugin:1.6.0:java failed: Plugin org.codehaus.mojo:exec-maven-plugin:1.6.0 or one of its dependencies could not be resolved: Failed to collect dependencies at org.codehaus.mojo:exec-maven-plugin:jar:1.6.0 -> org.eclipse.emf:org.eclipse.emf.ecore.xcore:jar:1.11.0 -> org.eclipse.emf:org.eclipse.emf.ecore:jar:[2.19.0,3.0.0): No versions available for org.eclipse.emf:org.eclipse.emf.ecore:jar:[2.19.0,3.0.0) within specified range -> [Help 1]
It seems to not able to resolve version 2.19 of the emf.ecore library used by Xcore, because Xtext uses version 2.12 instead.
I am not sure why the Gradle build works but not the Tycho one. Any idea?
Thanks in advance,
Maged Elaasar
[Updated on: Tue, 10 December 2019 02:27]
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