Hi Lewis You can debug using mvnDebug but i think it is cause there is already a property handler - https://github.com/apache/maven/blob/master/maven-model-builder/src/main/java/org/apache/maven/model/profile/activation/PropertyProfileActivator.java - so depending the scanning order you take one or the other. Try using another marker maybe or making yours higher priority probably.
Le mer. 14 nov. 2018 22:24, J. Lewis Muir <jlm...@imca-cat.org> a écrit : > 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 > >
