petrinet | : traffic_light : Petrinet framework for PHP | BPM library
kandi X-RAY | petrinet Summary
kandi X-RAY | petrinet Summary
This framework allows to build, vizualize and execute Petrinets which can be used to build workflow engines. It provides the core domain model of basic Petrinets that can be persisted using your favorite ORM as well as services to manage its execution.
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Top functions reviewed by kandi - BETA
- It is used to dump a petrinet .
- It is fired when a transition is fired .
- Fire a transition .
- Dumps a petricet .
- It builds an array with two places .
- Mark a place .
- It builds an instance of a petrinet .
- Connect an arc to a place .
- It is used to add a duplicate place marking .
- Adds a place marking .
petrinet Key Features
petrinet Examples and Code Snippets
Community Discussions
Trending Discussions on petrinet
QUESTION
I am having troubles with creating an instance in python. I tried to rewrite this in many ways, followed the tips from stack but somehow the code still gives me an error that my created instance is not an instance of PetriNet (namedtuple). Could anyone give me a hint what might be wrong? I also add the test code for errors, and error which I got.
...ANSWER
Answered 2018-Sep-24 at 14:04You create the PetriNet
namedtuple in two places: in the global scope, and in make_synchronized_petri_net_S
. This is a problem because instances created using one of these will not pass an isinstance
test using the other. isinstance(S, PetriNet)
is failing because S is a make_synchronized_petri_net_S-PetriNet, but the second argument is the global-Petrinet.
The simplest solution is to delete all of the namedtuple declarations from your function, and exclusively use the global ones.
Additionally, your isinstance(S.places.pop(), Place)
assertion will fail, because pet_places
is a list of sets of Places. So S.places.pop()
doesn't return a Place, it returns a set. One possible solution is to change your list-of-sets into just sets, by deleting the square brackets. I don't know if this is an appropriate solution for your business logic, but at least it makes the AssertionErrors go away.
QUESTION
I have a struct containing dynamic struct arrays:
...ANSWER
Answered 2017-Dec-28 at 21:12The problem is that petriNet
is a local copy of the object that was passed to your function. You're saving pointers to the data()
of various vectors in petriNet
in the new C_Node
and C_Transition
that you're creating, but these pointers become invalid when the function returns.
If you change your function to take a reference, the pointers will remain valid as long as the caller's object is alive, but that's still fragile. What you really need to do is make copies of all the data. So you can use memcpy()
:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install petrinet
PHP requires the Visual C runtime (CRT). The Microsoft Visual C++ Redistributable for Visual Studio 2019 is suitable for all these PHP versions, see visualstudio.microsoft.com. You MUST download the x86 CRT for PHP x86 builds and the x64 CRT for PHP x64 builds. The CRT installer supports the /quiet and /norestart command-line switches, so you can also script it.
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