[jbosstools-issues] [JBoss JIRA] (JBIDE-20580) Performance: EL resolvers unnecessarily create a lot of empty ArrayList instances

Performance: EL resolvers unnecessarily create a lot of empty ArrayList instances --------------------------------------------------------------------------------- Key: JBIDE-20580 URL: https://issues.jboss.org/browse/JBIDE-20580 Project: Tools (JBoss Tools) Issue Type: Task Components: cdi, common/jst/core, jsf, seam2 Affects Versions: 4.3.0.Beta2 Reporter: Viacheslav Kabanovich Assignee: Viacheslav Kabanovich Fix For: 4.3.0.CR1 Methods resolveVariables(), resolveELOperand() in all EL resolvers create a new instance of ArrayList, even if it turns out that there is nothing to return. Moreover, in some cases several new instances are created. Such practice creates a great load on memory and performance at full build of a big workspace. We probably have many other places that unnecessarily create new instances of lists, sets, map and other classes, our code should be revised for it. This issue only covers most often called methods in EL resolvers that really may affect performance.