59 lines
2.6 KiB
Plaintext
59 lines
2.6 KiB
Plaintext
-- Copyright (c) 2003-2007 ETH Zurich, Switzerland
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-- 2016 The University of Sheffield, UK
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--
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-- All rights reserved.
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--
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-- Redistribution and use in source and binary forms, with or without
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-- modification, are permitted provided that the following conditions are met:
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--
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-- * Redistributions of source code must retain the above copyright notice, this
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-- list of conditions and the following disclaimer.
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--
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-- * Redistributions in binary form must reproduce the above copyright notice,
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-- this list of conditions and the following disclaimer in the documentation
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-- and/or other materials provided with the distribution.
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--
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-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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-- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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-- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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-- DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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-- SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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-- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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-- OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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-- OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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--
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-- SPDX-License-Identifier: BSD-2-Clause
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--
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package AbstractSimpleChair02
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context Person
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inv: name <> ''
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context Session
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inv onlyOneChair:
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self.participants->one( p:Participant |
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p.role.oclIsTypeOf(AbstractSimpleChair02.Chair))
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context Session::invite(p:Person, r:Role):OclVoid
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pre: not self.participants->forAll(participant:Participant |
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participant.person->excludes(p) and
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participant.role->excludes(r))
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post: self.participants->one(participant:Participant |
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participant.person->includes(p) and
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participant.role->includes(r))
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-- constraints describing the semantics of an association class
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-- in terms of a ternary association:
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context Participant
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inv AssociationClassInjective:
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Participant::allInstances()->forAll( p: Participant |
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( self.role = p.role and self.person = p.person )
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implies self = p )
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inv oneRolePerParticipant: role->size() = 1
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inv onePersonPerParticipant: person->size() = 1
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endpackage
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