RhinoLessCssProcessor with LessCssFilter?

[Brian Nørremark]

Hi all,

I am trying to use CoffeeScriptFilter and LessCssFilter. It works fine for CoffeeScript, but LESS only works with files without imports.  If I define groups and use WroFilter, everything works, but for deployment reasons, I would like the .less/coffee-files to stay in the same location.

Any good advice?

Config

INFO  [WrapperSimpleAppMain] [WroFilter] wro4j configuration: ro.isdc.wro.config.jmx.WroConfiguration@2dd06f21[

  cacheUpdatePeriod=0

  modelUpdatePeriod=0

  resourceWatcherUpdatePeriod=0

  gzipEnabled=false

  debug=true

  ignoreMissingResources=false

  disableCache=true

  cacheGzippedContent=false

  jmxEnabled=true

  wroManagerClassName=ro.isdc.wro.extensions.manager.ExtensionsConfigurableWroManagerFactory

  encoding=UTF-8

  mbeanName=DesktopWroFilter

  header=<null>

  connectionTimeout=2000

  parallelPreprocessing=false

  ignoreEmptyGroup=true

  ignoreFailingProcessor=false

]

Error

WARN  [RhinoLessCssProcessor] Exception while applying RhinoLessCssProcessor processor on the  resource, no processing applied...

ro.isdc.wro.WroRuntimeException: Could not execute the script because:

{

  "type": "Syntax",

  "message": "Couldn't load undefined../ext/bootstrap-3.0.3/less/variables.less(0)",

  "filename": null,

  "index": null,

  "line": null,

  "callLine": null,

  "callExtract": null,

  "stack": null,

  "column": -1.0,

  "extract": [

    null,

    null,

    "@import \"../ext/bootstrap-3.0.3/less/variables.less\";"

  ]

}

[Alex Objelean]

You could try adding the lessCssImport preprocessor. Also, replace the rhinoLessCss processor with less4j processor. 

Another possible improvement is to upgrade to latest version of wro4j (1.7.2). 

Let me know if it works for you.

Cheers,

Alex

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[Alex Objelean]

I'm not sure I answered your question properly. 

You mentioned that you want to use LessCssFilter. This filter does nothing else but applies he LessCssProcessor on requested resource. It cannot process imports, since there is no processor handling import statement and no way to identify the relative resources referenced by import statement.

In order to correctly apply import processing, use WroFilter which perform more than just one processing. It will apply the configured list of pre & post processors. Do not forget to add the processors you are interested in (more specifically: lessCssImport and less4j processor).

Cheers,

Alex