[SOLR-3550] Improve library loading with base path

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0
• Assignee: Erik Hatcher
• Reporter: Erik Hatcher
• Created: 15/Jun/12 18:52
• Updated: 07/Jun/15 23:23
• Resolved: 07/Jun/15 23:23

Description

The issue occurs when users copy Solr's example "solr home" directory somewhere else, not relative to Solr's installation and paths break. Paths like these:

<lib dir="../../dist/" regex="apache-solr-cell-\d.*\.jar" />
<lib dir="../../contrib/extraction/lib" regex=".*\.jar" />

I've addressed this in my own projects by introducing a new system property construct like dir="${solr.install.dir}/contrib/extraction/lib". But this requires a change to solrconfig.xml for every <lib> element. There's got to be a better way such that Solr can be installed in one place, and <lib> directives can readily access the Solr "installation" directory path.