[ https://issues.jboss.org/browse/JBIDE-17112?page=com.atlassian.jira.plugi... ] Fred Bricon edited comment on JBIDE-17112 at 5/6/14 5:41 AM: ------------------------------------------------------------- So basically, adding the Portlet Facet fails here because the Web Facet has not been added. There are multiple problems here, some on the gatein projects side, some on the m2e/portlet integration side : *m2e/portlet integration* : * should not try to add the Portlet Facet if the Web Facet is not installed. * errors should not pop up to the UI, but should be converted to error markers instead *gatein projects* : * Web Facet is not installed because projects use web.xml 3.0 AND maven-compiler-plugin configuration is overridden to use 1.5. Since Web 3.0 requires 1.6, the constraint is not met, the Facet can't be installed (which in turn prevents the Java facet to be installed apparently). Why do you need to downgrade the java version in the first place? If you *really* *really* do need to (remember even 1.6 is EOL'ed), then you should also downgrade the web.xml version to 2.5 * I have several projects not compiling because of missing jdom:jdom:1.1.1 (jboss and exo repositories are configured). Where is it supposed to come from? * Some JSPs don't compile in eclipse, because dependencies have not been added to the pom (jsp-api, exo apis...). I understand they're not required to compile the java classes, but if you want to have your projects error-free in eclipse, you *need* to add the required deps to your war projects. was (Author: fbricon): So basically, adding the Portlet Facet fails here because the Web Facet has not been added. There are multiple problems here, some on the gatein projects side, some on the m2e/portlet integration side : *m2e/portlet integration* : * should not try to add the Portlet Facet if the Web Facet is not installed. * errors should not pop up to the UI, but should be converted to error markers instead *gatein projects* : * Web Facet is not installed because projects use web.xml 3.0 AND maven-compiler-plugin configuration is overridden to use 1.5. Since Web 3.0 requires 1.6, the constraint is not met, the Facet can't be installed. Why do you need to downgrade the java version in the first place? If you *really* *really* do need to (remember even 1.6 is EOL'ed), then you should also downgrade the web.xml version to 2.5 * I have several projects not compiling because of missing jdom:jdom:1.1.1 (jboss and exo repositories are configured). Where is it supposed to come from? * Some JSPs don't compile in eclipse, because dependencies have not been added to the pom (jsp-api, exo apis...). I understand they're not required to compile the java classes, but if you want to have your projects error-free in eclipse, you *need* to add the required deps to your war projects. -- This message was sent by Atlassian JIRA (v6.2.3#6260)