##############################################################################
# Copyright 2008, Gerhard Weis
# 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 authors 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
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##############################################################################
'''
this module provides a factory method to return an ISchema instance for
wsdl-mime xml-schema.
'''
from pkg_resources import resource_stream
from lxml import etree
from zope.interface import directlyProvides

from rsl.interfaces import ISchemaFactory
from rsl.xsd.schema import XMLSchema

def createmimeschema(schemaparent):
    '''
    create ISchema instance for wsdlmime.xsd.
    '''
    xmlschema = resource_stream(__name__, 'xsds/wsdlmime.xsd')
    tree = etree.parse(xmlschema)
    schema = XMLSchema(schemaparent)
    schema.frometree(tree.getroot())
    return schema
directlyProvides(createmimeschema, ISchemaFactory)
