In Anylogic, I have a fleet of 20 trucks that upon generation (using the TransporterFleet block) are placed in a population called trucks. These trucks are seized by a resource agent using a SeizeTransporter block. How do I find the index of the truck that has been seized? That is, so I can use trucks(ind).getX() for example to retrieve the x coordinate of the truck.
Edit1:
Forgot to mention that I have tried using self.getIndex(), but that didn't work as apparently that queries the seize block itself and not the transporter agent. Trying to find the answer, I found using this. might be an option, but I'm unsure what this. refers to and how to use it.
Thanks
You can refer to the seized unit as unit in some specific places in the SeizeTransporter block.
Check the small lightbulb at the front of the edit box, to see if this reference can be used. For more info, see https://www.benjamin-schumann.com/blog/2016/2/4/the-magic-lightbulb-and-how-it-can-help-your-anylogic-modelling
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I have a use case when I need to capture the data flow from one API to another. For example my code reads data from database using hibernate and during the data processing I convert one POJO to another and perform some more processing and then finally convert into final result hibernate object. In a nutshell something like POJO1 to POJO2 to POJO3.
In Java is there a way where I can deduce that an attribute from POJO3 was made/transformed from this attribute of POJO1. I want to look something where I can capture data flow from one model to another. This tool can be either compile time or runtime, I am ok with both.
I am looking for a tool which can run in parallel with code and provide data lineage details on each run basis.
Now instead of Pojos I will call them States! You are having a start position you iterate and transform your model through different states. At the end you have a final terminal state that you would like to persist to the database
stream(A).map(P1).map(P2).map(P3)....-> set of B
If you use a technic known as Event sourcing you can deduce it yes. How would this look like then? Instead of mapping directly A to state P1 and state P1 to state P2 you will queue all your operations that are necessary and enough to map A to P1 and P1 to P2 and so on... If you want to recover P1 or P2 at any time, it will be just a product of the queued operations. You can at any time rewind forward or rewind backwards as long as you have not yet chaged your DB state. P1,P2,P3 can act as snapshots.
This way you will be able to rebuild the exact mapping flow for this attribute. How fine grained you will queue your oprations, if it is going to be as fine as attribute level , or more course grained it is up to you.
Here is a good article that depicts event sourcing and how it works: https://kickstarter.engineering/event-sourcing-made-simple-4a2625113224
UPDATE:
I can think of one more technic to capture the attribute changes. You can instument your Pojo-s, it is pretty much the same technic used by Hibernate to enhance Pojos and same technic profiles use to for tracing. Then you can capture and react to each setter invocation on the Pojo1,Pojo2,Pojo3. Not sure if I would have gone that way though....
Here is some detiled readin about the byte code instrumentation if https://www.cs.helsinki.fi/u/pohjalai/k05/okk/seminar/Aarniala-instrumenting.pdf
I would imagine two reasons, either the code is not developed by you and therefore you want to understand the flow of data along with combinations to convert input to output OR your code is behaving in a way that you are not expecting.
I think you need to log the values of all the pojos, inputs and outputs to any place that you can inspect later for each run.
Example: A database table if you might need after hundred of runs, but if its one time may be to a log in appropriate form. Then you need to yourself manually use those data values layer by later to map to the next layer. I think with availability of code that would be easy. If you have a different need pls. explain.
Please accept and like if you appreciate my gesture to help with my ideas n experience.
There are "time travelling debuggers". For Java, a quick search did only spill this out:
Chronon Time Travelling Debugger, see this screencast how it might help you .
Since your transformations probably use setters and getters this tool might also be interesting: Flow
Writing your own java agent for tracking this is probably not what you want. You might be able to use AspectJ to add some stack trace logging to getters and setters. See here for a quick introduction.
I am trying to model a production infrastructure in anylogic which consists of several agents. One of it is a "steam network" (system dynamics) which starts with a flow from nowhere. The dynamic value of this flow is supposed to be the steam output of another agent. Unfortunately, I can't figure out how to link the flow to the steam production (dynamic variable) of my agent "machine".
I appreciate all your help.
To clarify the model navigation, take this example model I made:
It has 2 different agents embedded on main. "OtherAgent" has 1 variable v_DefiningFlowRate of type double, set to 12.
The second agent on Main "SysDynAgent" has a flow object that pulls the flow rate from "OtherAgent" by navigating to it correctly:
this is what you need to adapt to in your model
The flow object allows you to set the flow to be anything (it is a Java field) so you can easily link it to your agent's variable as below:
The actual code depends on your model structure, i.e. how the steam agent is embedded relative to the myAgent feeding it with flow. In my example, "MyAgent" is simply embedded in the steam engine, but yours might vary. If that is the problem, check the Help's section Where am I and how do I get to...
I am stuck, I had this working last week now I have changed something and it will not work!
I have a simple flow service as follows:
pub.file.getFile
pub.flatFile.convertToValues
pub.document.sortDocuments
But the sortDocuments stage is not doing anything.
The recordWithNoID document list is perfect and all the fields are correct (so the schema and dictionary are working as intended), but when I try to sort it on the key "Field1" the sort is not doing anything, the documents are not changing order at all.
See two attached screenshots:
Screenshot 1 shows the pipeline during pub.document.sortDocuments step
key variable is: Field1
order variable is:ascending
Screenshot 2 shows the recordwithNoID after running the flow service. As you can see the Field1 column has not been ordered correctly.(it's still in the original document order) I have also tried mapping the results to other document types with the same result.
As I said above I had this working last week and now cannot seem to get it to work. I have even started the whole process from scratch and it still will not work. Any help would be very much appreciated!
Screenshot1
Screenshot 2
EDIT:
I resolved this issue by mapping to the Document Type created from the Schema.
It appears that you map the ffValues document (IData) and not the recordWithNoID document list (IData array) inside it, which would be the wrong level.
Please map the recordWithNoID instead and let us know if that solves the issue.
While not related to the question, it seems that some "clutter" is on the pipeline. I always recommend to people that they drop variable as early as possible. Mostly to improve readability but also for performance.
I am not sure but maybe this is the problem: on screenshoot1 we can see that you sort ffValues but you are mapping it to the document. (because you are using invoke, it is done automatically)
Is screen number two is showing ffValues or document variable ?
Maybe you are checking wrong, not sorted variable?
I am also want to suggest to use Map and transformer rather than invoke, because using map gives you power to control the pipeline.
While using invoke each variable is save to the pipeline (having varaible with the same name on pipeline ale on the output of the service will result with overwrite on pipeline variable).
I was working on creating a weather application in Java using Weather Underground and I found that it does have data for some cities.
Initially, I was planning on using GeopIP to get the user's location automatically but since the support for cities is limited I decided to let the user choose the city every time the program starts.
I want the user to be able to choose a city from one that is supported by Weather Underground. The user will enter the name and as he/she enters the name, the possible locations will be displayed in a way similar to the one shown in the picture.
My question is:
How do I implement this search feature ?
My initial guess was to create a Vector containing all the names of the cities and then use brute force to find the match and display in a JPopup or a JWindow containing a JList but I guess there has to be a better method
Rephrase:
What I do not understand is WHAT INFO do I keep in the data structure I must use ? Should I manually create a list of cities that Weather Underground supports or is there another way to do it ?
Take a look at the Trie data structure (also known as digital tree or prefix tree). Autocompletion is one of the most common examples of it's usefulness.
The following article has a nice an very approachable explanation:
Roll your own autocomplete solution using Tries.
if you google autosuggestcombobox you will get some interesting results:
This one is written in JavaFX - I have used and extended it myself already. It is quite useful. What you get "for free" with JavaFX: a context menu with right-mouse click which is auto-generated containing some of the usual "stuff", like cut, copy & paste and even undo! So, I can recommend that solution. To get into JavaFX isn't so hard - and I think it is much easier to learn than Swing - and looks so much cooler! However this implementation has some drawbacks - especially when the layout is not left-aligned, because it is simply a text field on top of a combobox.
OK - but if you want to stick to Swing - you could probably use this one. I haven't used that myself, but the code looks quite straightforward and pretty clean - cleaner than the implementation for JavaFX I must admit (but that had some nice features). So - maybe you try - and extend it? It is built simply on JComboBox.
I'm using JavaHL to connect to a 1.6 svn repos. While I managed to list the contents of the repository, I'm not able to get the item history (the comments made on the check ins as well as the dates and the authors).
As far as I see, SVNClient.logMessages is the right method, but the callback method is never been executed. I used Revision.HEAD for the path revision and a revision range object holding Revision.START and Revision.HEAD; the limit is set to 0 (which is no limit according to the documentation). I'm trying to fetch the revision, the date, the author and the comment.
If someone knows about example code on using JavaHL I'm maybe able to find my fault by comparing that code to mine.
BTW: I know about SVNKit, but the management decided not to buy it. Thus I have to use JavaHL, where next-to-no sample programs exist (and the doc will merely list the classes and interfaces without a very detailed description). So, please point me in that direction of SVNKit as this is impossible for me.
Any pointers appreciated.
Gnarf
The issue has been solved. The problem was the call to SVNClient.logMessages(), especially the revision range used.
The start revision had been Revision.START that, according to the documentation, is used to describe the "first existing revision".
The problem disappeared when I used Revision.getInstance(1) instead. As it is reasonable that any item has at least one revision (the initial one) with that number, it should be save to use that.
Hopefully this will save anyone else from spending another two-and-a-half days to figure it out!
Gnarf