__init__.py

OpenWFE是一个开放源码的Java工作流引擎。它是一个完整的业务处理管理套件：一个引擎

#
# Copyright (c) 2005, 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 
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 
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#
# $Id: __init__.py 1931 2005-07-07 07:39:47Z jmettraux $
#

"""
    A REST session for manipulating engines (cancelling expressions, flows,
    freezing expressions, ...)
"""

from openwfe.rest import RestSession, getSession
from openwfe.workitem import codec


class ControlSession (RestSession):

    def __init__ (self, server, port, username, password):
        """
            Instantiates a new WorkSession.
        """
        self.url = "http://%s:%i/engine" % (server, port)
        self.sessionId = getSession(self.url, username, password)

    #
    # session methods

    def listExpressions (self):
        """
            Returns the list of expressions available for control
        """
        r = self._get('listexpressions')
        return codec.decode(r)

    def cancelExpression (self, flowExpressionId):
        self._doPost('cancelexpression', None, codec.encode(flowExpressionId))

    #def cancelFlow (self, flowExpressionId):
    #    self._doPost('cancelflow', None, codec.encode(flowExpressionId))

    def freezeExpression (self, flowExpressionId):
        self._doPost('freezeexpression', None, codec.encode(flowExpressionId))

    def unfreezeExpression (self, flowExpressionId):
        self._doPost('unfreezeexpression', None, codec.encode(flowExpressionId))