Java tutorial
/** * Copyright 1&1 Internet AG, https://github.com/1and1/ * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package net.oneandone.maven.rules; import static net.oneandone.maven.rules.common.RuleHelper.getProject; import org.apache.maven.enforcer.rule.api.EnforcerRuleException; import org.apache.maven.enforcer.rule.api.EnforcerRuleHelper; import org.apache.maven.model.Dependency; import org.apache.maven.plugin.logging.Log; import org.apache.maven.project.MavenProject; import org.codehaus.plexus.component.configurator.expression.ExpressionEvaluationException; import net.oneandone.maven.rules.common.AbstractFilterableRule; import net.oneandone.maven.rules.common.DifferenceHandler; public class ForbidOverridingManagedDependenciesRule extends AbstractFilterableRule { public void execute(EnforcerRuleHelper helper) throws EnforcerRuleException { Log log = helper.getLog(); try { MavenProject project = getProject(helper); compareDependenciesWithParentManagement(project, log, new DifferenceHandler() { public void handleDifference(Log log, Dependency dependency, Dependency parentDependency) { logHeader(log, "dependency management"); log.warn("Difference for: " + dependency.getManagementKey()); log.warn("Project: " + dependency.getVersion()); log.warn("Parent: " + parentDependency.getVersion()); log.warn("----------------------------------------"); failureDetected = true; } }); if (failureDetected) { throw new EnforcerRuleException("Failing because of overridden managed dependencies"); } } catch (ExpressionEvaluationException e) { throw new EnforcerRuleException("Unable to lookup an expression " + e.getLocalizedMessage(), e); } } }