Add support of JDK17 for groovy-eclipse-compiler

[pdesoyres]

I'm trying to use the groovy-eclipse-compiler 3.7.0 maven plugin along with JDK17. But it fails with error:

[INFO] Using Groovy-Eclipse compiler to compile both Java and Groovy files
[INFO] source level should be in '1.1'...'1.8','9'...'15' (or '5.0'..'15.0'): 17

Am I missing something? Is there any plan on supporting JDK17?

pom file:

<?xml version="1.0" encoding="UTF-8"?>
<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <artifactId>xxx</artifactId>
    <version>1.0.0-SNAPSHOT</version>
    <packaging>jar</packaging>

    <properties>
        <maven.compiler.source>17</maven.compiler.source>
        <maven.compiler.target>17</maven.compiler.target>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>org.codehaus.groovy</groupId>
            <artifactId>groovy</artifactId>
            <version>3.0.9</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
	        <plugin>
		        <groupId>org.apache.maven.plugins</groupId>
		        <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
		        <configuration>
			        <compilerId>groovy-eclipse-compiler</compilerId>
		        </configuration>
		        <dependencies>
			        <dependency>
				        <groupId>org.codehaus.groovy</groupId>
				        <artifactId>groovy-eclipse-compiler</artifactId>
				        <version>3.7.0</version>
			        </dependency>
			        <dependency>
				        <groupId>org.codehaus.groovy</groupId>
				        <artifactId>groovy-eclipse-batch</artifactId>
				        <version>3.0.8-01</version>
			        </dependency>
		        </dependencies>
	        </plugin>
        </plugins>
    </build>
</project>

[eric-milles]

#1303 is still open. As soon as Eclipse 4.22 (2021-12) releases, the batch compiler can be built with support for Java 17. If you need this today, you can pull down the project and build the batch compiler following these steps: https://github.com/groovy/groovy-eclipse/wiki/Building-Maven-Batch-Compiler

I have artifacts that support up to Java 16, but the loss of bintray has set me back in terms of publication.

[eric-milles]

Eclipse 4.22 (2021-12) support has been finalized. You can build a batch compiler against this target for Java 17 joint compilation. Groovy 2.5 and Groovy 3 only support up to Java 15. Groovy 4 is at Release Candidate 1 and supports Java 17 (and 18).

[eric-milles]

The batch compiler version 3.0.9-03 will run properly under JDK17 and will accept a target release of 17. This artifact is not signed and is not deployed to Maven Central, so there is an extra plugins repository required in you pom: https://github.com/groovy/groovy-eclipse/wiki/Groovy-Eclipse-Maven-plugin#how-to-use-the-compiler-plugin---setting-up-the-pom

[pdesoyres]

This is great news. Thank you @eric-milles

[venkatrao225]

@eric-milles when the artifcat would be available in Maven repo?

[eric-milles]

#1359