question: protected Resource updateResourceVersion ( Resource resource , BigDecimal oldVersion , BigDecimal newVersion ) { Preconditions . checkNotNull ( resource ) ; Preconditions . checkNotNull ( oldVersion ) ; Preconditions . checkNotNull ( newVersion ) ; if ( ! oldVersion . equals ( newVersion ) ) { try { File oldEml = dataDir . resourceEmlFile ( resource . getShortname ( ) , oldVersion ) ; File newEml = dataDir . resourceEmlFile ( resource . getShortname ( ) , newVersion ) ; if ( oldEml . exists ( ) && ! newEml . exists ( ) ) { Files . move ( oldEml , newEml ) ; } File oldRtf = dataDir . resourceRtfFile ( resource . getShortname ( ) , oldVersion ) ; File newRtf = dataDir . resourceRtfFile ( resource . getShortname ( ) , newVersion ) ; if ( oldRtf . exists ( ) && ! newRtf . exists ( ) ) { Files . move ( oldRtf , newRtf ) ; } File oldDwca = dataDir . resourceDwcaFile ( resource . getShortname ( ) , oldVersion ) ; File newDwca = dataDir . resourceDwcaFile ( resource . getShortname ( ) , newVersion ) ; if ( oldDwca . exists ( ) && ! newDwca . exists ( ) ) { Files . move ( oldDwca , newDwca ) ; } resource . setEmlVersion ( newVersion ) ; } catch ( IOException e ) { log . error ( "Failed to update version number for " + resource . getShortname ( ) , e ) ; throw new InvalidConfigException ( TYPE . CONFIG_WRITE , "Failed to update version number for " + resource . getShortname ( ) + ": " + e . getMessage ( ) ) ; } } return resource ; }
target:  Update a resource's version, and rename its eml, rtf, and dwca versioned files to have the new version also.