Community
Participate
Working Groups
Imagine, we have 5 bundles used by an application (A, B, C, D, E, F). All this bundles have cross joined dependencies, something like this: A<->B<->C<->D<->F<->(A) and etc. I clearly understand that this is a very bad practice but in reality this is a widely-spread case. During starting of the application Virgo couldn't find just one import package in the bundle F. As a result of that the Virgo resolver generated a report and depicted all our graph as unresolved and didn't point by any way the concrete import problem. The real example: ------------------------------------------------------------------------------- Resolver report: An Import-Package could not be resolved. Resolver error data <Import-Package: com.sun.ccpp; version="[1.0.0,1.1.0)">. Caused by missing constraint in bundle <com.liferay.portal_6.1.1> constraint: <Import-Package: com.sun.ccpp; version="[1.0.0,1.1.0)"> A Require-Bundle could not be resolved. Resolver error data <Require-Bundle: org.displaytag; bundle-version="0.0.0">. Caused by missing constraint in bundle <com.liferay.portal_6.1.1> constraint: <Require-Bundle: org.displaytag; bundle-version="0.0.0"> An Import-Package could not be resolved. Resolver error data <Import-Package: org.springframework.context.support; version="[3.0.7,3.1.0)">. Caused by missing constraint in bundle <com.browseengine.bobo_2.5.0.RC1> constraint: <Import-Package: org.springframework.context.support; version="[3.0.7,3.1.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: org.hibernate.cache; version="[3.6.10.FINAL,3.7.0)">. Caused by missing constraint in bundle <com.ecyrd.jspwiki_2.8.4> constraint: <Import-Package: org.hibernate.cache; version="[3.6.10.FINAL,3.7.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.mchange.v2.c3p0; version="[0.9.1.2,0.10.0)">. Caused by missing constraint in bundle <org.hibernate-distribution_3.6.10.FINAL> constraint: <Import-Package: com.mchange.v2.c3p0; version="[0.9.1.2,0.10.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.liferay.portal.dao.jdbc.pool.c3p0; version="[6.1.1,6.2.0)">. Caused by missing constraint in bundle <com.springsource.com.mchange.v2.c3p0_0.9.1.2> constraint: <Import-Package: com.liferay.portal.dao.jdbc.pool.c3p0; version="[6.1.1,6.2.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: org.hibernate; version="[3.6.10.FINAL,3.7.0)">. Caused by missing constraint in bundle <net.sf.ehcache-core_2.4.6> constraint: <Import-Package: org.hibernate; version="[3.6.10.FINAL,3.7.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.liferay.portal.freemarker; version="[6.1.1,6.2.0)">. Caused by missing constraint in bundle <com.liferay.alloy.taglib_1.0.1> constraint: <Import-Package: com.liferay.portal.freemarker; version="[6.1.1,6.2.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: custom-sql; version="0.0.0">. Caused by missing constraint in bundle <com.liferay.util.java_6.1.1> constraint: <Import-Package: custom-sql; version="0.0.0"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.liferay.alloy.util; version="[1.0.1,1.1.0)">. Caused by missing constraint in bundle <com.liferay.util.taglib_6.1.1> constraint: <Import-Package: com.liferay.alloy.util; version="[1.0.1,1.1.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.liferay.counter.service; version="[6.1.1,6.2.0)">. Caused by missing constraint in bundle <com.liferay.util.bridges_6.1.1> constraint: <Import-Package: com.liferay.counter.service; version="[6.1.1,6.2.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: org.springframework.beans; version="[3.0.7,3.1.0)">. Caused by missing constraint in bundle <org.apache.abdera_1.1.2> constraint: <Import-Package: org.springframework.beans; version="[3.0.7,3.1.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: org.springframework.web.context; version="[3.0.7,3.1.0)">. Caused by missing constraint in bundle <org.displaytag_1.2.0> constraint: <Import-Package: org.springframework.web.context; version="[3.0.7,3.1.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: org.springframework.context; version="[3.0.7,3.1.0)">. Caused by missing constraint in bundle <org.displaytag_1.2.0> constraint: <Import-Package: org.springframework.context; version="[3.0.7,3.1.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.liferay.portal.kernel.messaging; version="[6.1.1,6.2.0)">. Caused by missing constraint in bundle <org.jabsorb_1.3.1> constraint: <Import-Package: com.liferay.portal.kernel.messaging; version="[6.1.1,6.2.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.mchange.v2.c3p0; version="[0.9.1.2,0.10.0)">. Caused by missing constraint in bundle <org.quartz_2.1.0> constraint: <Import-Package: com.mchange.v2.c3p0; version="[0.9.1.2,0.10.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: net.sf.ehcache; version="[2.4.6,2.5.0)">. Caused by missing constraint in bundle <net.sf.ehcache-jgroupsreplication_1.4.0> constraint: <Import-Package: net.sf.ehcache; version="[2.4.6,2.5.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: net.sf.ehcache; version="[2.4.6,2.5.0)">. Caused by missing constraint in bundle <org.openid4java_0.9.5.593> constraint: <Import-Package: net.sf.ehcache; version="[2.4.6,2.5.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: net.sf.ehcache; version="[2.4.6,2.5.0)">. Caused by missing constraint in bundle <org.jamwiki-core_1.0.6> constraint: <Import-Package: net.sf.ehcache; version="[2.4.6,2.5.0)"> An Import-Package could not be resolved. Resolver error data <Import-Package: sun.misc; version="0.0.0">. Caused by missing constraint in bundle <com.sun.ccpp-rt_1.0.0> constraint: <Import-Package: sun.misc; version="0.0.0"> An Import-Package could not be resolved. Resolver error data <Import-Package: com.liferay.portal.util; version="[6.1.1,6.2.0)">. Caused by missing constraint in bundle <JOscarLib_0.0.0> constraint: <Import-Package: com.liferay.portal.util; version="[6.1.1,6.2.0)"> ------------------------------------------------------------------------------- How can I find a real problem from this report? I have to sequentially recheck every bundle from the report until I have found a real import missing, but it is a very tiresome and tedious process. In that concrete case the problem was in the unnecessary <Import-Package: sun.misc; version="0.0.0">. After I removed it the entire graph had been successfully resolved. It will be very nice to release developers from that kind of routine investigations by generating more intelligent error reports
