Hello, all! I have an extension
https://github.com/imca-cat/profile-activation-advanced that allows property-based profile activation based on an MVEL expression. My problem is that it works === $ mvn help:active-profiles validate ... The following profiles are active: - foo_env-development (source: org.example.foo:foo:1.0.0) ... === when loaded via Maven's lib/ext directory or when specified on the command line with "-Dmaven.ext.class.path=<path-to-extension-jars>", but does *not* work === $ mvn help:active-profiles validate ... The following profiles are active: ... === when loaded via a project's .mvn/extensions.xml file. The extension hijacks the normal property activator like this @Component(role = ProfileActivator.class, hint = "property") public class AdvancedProfileActivator implements ProfileActivator { ... } and evaluates the property value as an MVEL expression if the property name equals "mvel" or "mvel(" <properties-map-identifier> ")". Does anyone know why it would work from Maven's lib/ext directory, but not from a project's .mvn/extensions.xml file? Or does anyone know how to debug this? Is it possible that the hijack doesn't work when loaded from a project's .mvn/extensions.xml because the original profile activator is found on the class path *before* the AdvancedProfileActivator of the extension, but when the extension JAR is placed in Maven's lib/ext, the AdvancedProfileActivator is found on the class path *before* the original profile activator? (Just a wild guess.) The full source code of the extension's profile activator is at https://github.com/imca-cat/profile-activation-advanced/blob/master/src/main/java/org/imca_cat/maven/profile_activation_advanced/AdvancedProfileActivator.java To reproduce the problem, simply create a new Maven project directory containing the following pom.xml 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/xsd/maven-4.0.0.xsd";> <modelVersion>4.0.0</modelVersion> <groupId>org.example.foo</groupId> <artifactId>foo</artifactId> <version>1.0.0</version> <packaging>pom</packaging> <profiles> <profile> <id>foo_env-development</id> <activation> <property> <name>mvel</name> <value>(!isdef foo_env) || foo_env == "development"</value> </property> </activation> </profile> </profiles> </project> === (The foo_env-development profile should activate if the foo_env property (or system property) is not set or is set to the string "development".) Create .mvn/extensions.xml: === <?xml version="1.0" encoding="UTF-8"?> <extensions xmlns="http://maven.apache.org/EXTENSIONS/1.0.0"; xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xsi:schemaLocation="http://maven.apache.org/EXTENSIONS/1.0.0 http://maven.apache.org/xsd/core-extensions-1.0.0.xsd";> <extension> <groupId>org.imca-cat.maven</groupId> <artifactId>profile-activation-advanced</artifactId> <version>0.1.0</version> </extension> </extensions> === Run the following command: === $ mvn help:active-profiles validate === It should report that the foo_env-development profile is active (because the foo_env property is not set), but it does not. :-( I previously asked on the Maven User list https://lists.apache.org/thread.html/99ee87ba1bc86d98652173482b3a5882a52e344fad18df2cd50e8750@%3Cusers.maven.apache.org%3E but did not receive any replies. Thank you for your help! Lewis --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@maven.apache.org For additional commands, e-mail: dev-h...@maven.apache.org
