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Update Building Headless RCP Xtext Application: Part I
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May 07, 2022
by
Serafim Simonov
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## Create standard Xtext Project.
1.
File -> New -> Project... -> Xtext -> XText Project
2.
Choose the name, for demonstration purposes we take the default name as it is proposed by XText.
3.
Preferred Build System must be Maven, Build Language Server can be set to None, since it is not in the scope of this tutorial.
## Create Empty Plugin-Project.
1.
File -> New -> Project... -> Plugin Development -> Plugin Project
2.
It is good to choose the project name in a such way, that it contains the prefix of our xtext project, i.e. org.xtext.mydsl.pluginname.
3.
Uncheck
`This Project will make contributions to the UI`
and set
`Create a rich client application`
to
`no`
4.
Choose
`Headles Hello RCP`
template and click
`finish`
5.
Create an empty pom.xml
6.
Paste the xml-code provided bellow into the pom.xml
```
<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>org.xtext.example.mydsl</groupId>
<artifactId>org.xtext.example.mydsl.parent</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<artifactId>org.xtext.example.mydsl.cli</artifactId>
<packaging>eclipse-plugin</packaging>
</project>
```
## Create empty project.
1.
File -> New -> Other -> General -> Project
2.
Now we need to create a product file. Right click on the project -> New -> Other -> Plugin Development-> Product Configuration
3.
In the wizard select,
`Create a configuration file with basic settings `
4.
Set file name to org.xtext.example.mydsl.product
5.
Click Finish
6.
Create pom with the content shown below
```
<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>org.xtext.example.mydsl</groupId>
<artifactId>org.xtext.example.mydsl.parent</artifactId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<artifactId>org.xtext.example.mydsl.product</artifactId>
<packaging>eclipse-plugin</packaging>
</project>
```
7.
Create META-INF folder and create Manifest.MF file inside it.
## Make Plugin project and product project children of parent
1.
Remove all projects from the Eclipse (do not delete the on disk!) and close it.
2.
Navigate to the directory of your eclipse workspace.
3.
Put the folders asociated with the plugin and product projects inside the parent folder of the XText project.
4.
Open the parent folder and edit the pom file inside. You must add the plugin project to the list of the modules of the XText child projects:
```
<modules>
<module>org.xtext.example.mydsl</module>
<module>org.xtext.example.mydsl.ide</module>
<module>org.xtext.example.mydsl.ui</module>
<module>org.xtext.example.mydsl.target</module>
<module>org.xtext.example.mydsl.tests</module>
<module>org.xtext.example.mydsl.ui.tests</module>
<!-- add these projects -->
<module>org.xtext.example.mydsl.cli</module>
<module>org.xtext.example.mydsl.product</module>
</modules>
```
5.
Start eclipse and import the XText project as Maven project.
You should see in the project explorer that the plugin and prodct projects are now seen as children of org.xtext.example.mydsl.parent project.
