release the filter instance associated with this filterconfig , if there is one . concode_field_sep FilterDef filterDef concode_elem_sep Context context concode_elem_sep Filter filter concode_field_sep Filter getFilter concode_elem_sep String getFilterName concode_elem_sep FilterDef getFilterDef concode_elem_sep void setFilterDef concode_elem_sep String getInitParameter concode_elem_sep ServletContext getServletContext concode_elem_sep String toString concode_elem_sep Enumeration getInitParameterNames
void function ( ) { if ( this . filter != null ) filter . destroy ( ) ; this . filter = null ; }