#
#<tt>
# Copyright (c) 2006, John Mettraux, OpenWFE.org
# All rights reserved.
# 
# Redistribution and use in source and binary forms, with or without 
# modification, are permitted provided that the following conditions are met:
# 
# . Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.  
# 
# . Redistributions in binary form must reproduce the above copyright notice, 
#   this list of conditions and the following disclaimer in the documentation 
#   and/or other materials provided with the distribution.
# 
# . Neither the name of the "OpenWFE" nor the names of its contributors may be
#   used to endorse or promote products derived from this software without
#   specific prior written permission.
# 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
# POSSIBILITY OF SUCH DAMAGE.
#</tt>
#
# $Id: definitions.rb 2725 2006-06-02 13:26:32Z jmettraux $
#

#
# "made in Japan"
#
# John Mettraux at openwfe.org
#

#require 'workitem'
#require 'ru/flowexpression'
#require 'ru/fe_utils'


#
# the subprocess expression
#

module OpenWFEru

    class SubprocessRefExpression < FlowExpression

        #
        # apply / reply

        def apply (workitem)

            ref = OpenWFEru::lookup_ref(self, workitem)

            raise "'subprocess' expression misses a 'ref', 'field-ref' or 'variable-ref' attribute" if not ref

            template_fei = lookup_variable(ref)

            raise "did not find any subprocess named '#{ref}'" \
                if not template_fei

            sForget = lookup_attribute(A_FORGET, workitem)

            requester = @fei
            requester = @fei.workflowInstanceId \
                if sForget and sForget.downcase == 'true'

            params = list_attributes(workitem)

            get_expression_pool()\
                .launch_template(requester, template_fei, workitem, params)
        end

        #def reply (workitem)
        #end
    end

end