# \#code-engineering **URL:** https://forums.visual-paradigm.com/tag/code-engineering/28.md [Latest](https://forums.visual-paradigm.com/latest.md) · [Categories](https://forums.visual-paradigm.com/categories.md) · [Tags](https://forums.visual-paradigm.com/tags.md) --- ## [Why loginning from google doesnt work](https://forums.visual-paradigm.com/t/why-loginning-from-google-doesnt-work/22746)
**Author:** [@Damir\_Evloev](https://forums.visual-paradigm.com/u/Damir_Evloev)\ **Replies:** 1\ **Last updated:** [June 22, 2026, 5:47am UTC](https://forums.visual-paradigm.com/t/why-loginning-from-google-doesnt-work/22746 "2026-06-22T05:47:29Z")
I want to log in by pressing buttom “Google” and get nothing. I press other buttons an they work. Only Google dont. Fix it pls. --- ## [Generate DDL for BigQuery](https://forums.visual-paradigm.com/t/generate-ddl-for-bigquery/22630)
**Author:** [@meras](https://forums.visual-paradigm.com/u/meras)\ **Replies:** 1\ **Last updated:** [January 22, 2026, 9:20am UTC](https://forums.visual-paradigm.com/t/generate-ddl-for-bigquery/22630 "2026-01-22T09:20:07Z")
Hi, How I can generate DDL from my diagrams with dialect and data types compatible with Google BigQuery ? --- ## [Roundtrip updating UML diagrams to code](https://forums.visual-paradigm.com/t/roundtrip-updating-uml-diagrams-to-code/22608)
**Author:** [@seannam](https://forums.visual-paradigm.com/u/seannam)\ **Replies:** 0\ **Last updated:** [October 22, 2025, 12:19pm UTC](https://forums.visual-paradigm.com/t/roundtrip-updating-uml-diagrams-to-code/22608 "2025-10-22T12:19:49Z")
As far as I can see, roundtrip updating diagrams to code is only officially supported on Visual Studio extension. However, we found the extension to be very brittle and often not functional. Rational Rose had a differen… --- ## [Visual Studio integration - extension not working](https://forums.visual-paradigm.com/t/visual-studio-integration-extension-not-working/22607)
**Author:** [@seannam](https://forums.visual-paradigm.com/u/seannam)\ **Replies:** 0\ **Last updated:** [October 21, 2025, 7:40pm UTC](https://forums.visual-paradigm.com/t/visual-studio-integration-extension-not-working/22607 "2025-10-21T19:40:58Z")
Our team tried using the visual paradigm extension on visual studio to do roundtrip updating from UML class diagrams to C# code. We got it working for some time, though we found the extension to be pretty brittle - speci… --- ## [How to update existing UML model from updated C++ code](https://forums.visual-paradigm.com/t/how-to-update-existing-uml-model-from-updated-c-code/20840)
**Author:** [@dmcamens](https://forums.visual-paradigm.com/u/dmcamens)\ **Replies:** 2\ **Last updated:** [June 10, 2025, 11:35am UTC](https://forums.visual-paradigm.com/t/how-to-update-existing-uml-model-from-updated-c-code/20840 "2025-06-10T11:35:03Z")
We have a UML model that was reverse engineered from C++ code almost 2 years ago by one of our developers. The code does not change very often, but now we have some new class members that have been added to some of our … --- ## [Swagger generator ignore class attributes](https://forums.visual-paradigm.com/t/swagger-generator-ignore-class-attributes/21340)
**Author:** [@DJKnowles](https://forums.visual-paradigm.com/u/DJKnowles)\ **Replies:** 1\ **Last updated:** [January 16, 2025, 9:18am UTC](https://forums.visual-paradigm.com/t/swagger-generator-ignore-class-attributes/21340 "2025-01-16T09:18:33Z")
I have been generating swagger files from class diagrams. Some of the classes in the diagram have been imported using Reverse Code from existing Java files. The classes implement java.io.Serializable. To do this there i… --- ## [I cant findsome of the steps that are mentioned in here https://www.visual-paradigm.com/tutorials/eclipseuml.jsp for code generation from UMl Diagrams. such as Update code option not available .I cant find any tutorial for latest version on how to do it ](https://forums.visual-paradigm.com/t/i-cant-findsome-of-the-steps-that-are-mentioned-in-here-https-www-visual-paradigm-com-tutorials-eclipseuml-jsp-for-code-generation-from-uml-diagrams-such-as-update-code-option-not-available-i-cant-find-any-tutorial-for-latest-version-on-how-to-do-it/21260)
**Author:** [@Meh\_Naz](https://forums.visual-paradigm.com/u/Meh_Naz)\ **Replies:** 1\ **Last updated:** [November 25, 2024, 7:18am UTC](https://forums.visual-paradigm.com/t/i-cant-findsome-of-the-steps-that-are-mentioned-in-here-https-www-visual-paradigm-com-tutorials-eclipseuml-jsp-for-code-generation-from-uml-diagrams-such-as-update-code-option-not-available-i-cant-find-any-tutorial-for-latest-version-on-how-to-do-it/21260 "2024-11-25T07:18:29Z")
--- ## [Visual Paradigm Enterprise 30-day free trial does not have Python state machine code gen...?](https://forums.visual-paradigm.com/t/visual-paradigm-enterprise-30-day-free-trial-does-not-have-python-state-machine-code-gen/18454)
**Author:** [@Luna\_Tuna](https://forums.visual-paradigm.com/u/Luna_Tuna)\ **Replies:** 1\ **Last updated:** [March 14, 2024, 2:16am UTC](https://forums.visual-paradigm.com/t/visual-paradigm-enterprise-30-day-free-trial-does-not-have-python-state-machine-code-gen/18454 "2024-03-14T02:16:19Z")
Those are the language options. Was going through the basic OrderController state machine code gen tutorial only to get through it and realize that Python code gen isn’t supported although all the documentation says … --- ## [How to reverse/generate Java Record?](https://forums.visual-paradigm.com/t/how-to-reverse-generate-java-record/17964)
**Author:** [@jeanaymeric](https://forums.visual-paradigm.com/u/jeanaymeric)\ **Replies:** 2\ **Last updated:** [January 11, 2024, 7:04pm UTC](https://forums.visual-paradigm.com/t/how-to-reverse-generate-java-record/17964 "2024-01-11T19:04:39Z")
Hi, I can’t find a way to import a java record item. There is no view in the Model Explorer panel. I can see all interfaces, classes and enums, but no records. If I try to reverse a java record, I have this message : … --- ## [C++11/17/20 code engineering?](https://forums.visual-paradigm.com/t/c-11-17-20-code-engineering/15219)
**Author:** [@David\_Schroder](https://forums.visual-paradigm.com/u/David_Schroder)\ **Replies:** 6\ **Last updated:** [October 17, 2023, 10:38am UTC](https://forums.visual-paradigm.com/t/c-11-17-20-code-engineering/15219 "2023-10-17T10:38:59Z")
Supported for UML reversing? Thanks. --- ## [How is operating system abstraction layer managed with UML modeling and in particular statechart diagrams?](https://forums.visual-paradigm.com/t/how-is-operating-system-abstraction-layer-managed-with-uml-modeling-and-in-particular-statechart-diagrams/18229)
**Author:** [@dom](https://forums.visual-paradigm.com/u/dom)\ **Replies:** 0\ **Last updated:** [October 12, 2023, 9:58am UTC](https://forums.visual-paradigm.com/t/how-is-operating-system-abstraction-layer-managed-with-uml-modeling-and-in-particular-statechart-diagrams/18229 "2023-10-12T09:58:46Z")
Hi, I’m evaluating Visual Paradigm and I’m used to IBM Rational Rhapsody Developer and Architect. I followed this small tutorial: How to Generate Code from State Machine Diagram? (visual-paradigm.com), created a state … --- ## [Visual Studio 2022 Integration](https://forums.visual-paradigm.com/t/visual-studio-2022-integration/17615)
**Author:** [@Jon\_Pfeffer](https://forums.visual-paradigm.com/u/Jon_Pfeffer)\ **Replies:** 4\ **Last updated:** [June 5, 2023, 2:45pm UTC](https://forums.visual-paradigm.com/t/visual-studio-2022-integration/17615 "2023-06-05T14:45:07Z")
Does anyone know the time frame for a Visual Paradigm release supporting Visual Studio 2022 integration? Currently v16.3 only supports version 2019. Thanks, Jon --- ## [Reverse engineering in intellij](https://forums.visual-paradigm.com/t/reverse-engineering-in-intellij/18045)
**Author:** [@smith](https://forums.visual-paradigm.com/u/smith)\ **Replies:** 0\ **Last updated:** [May 25, 2023, 12:13pm UTC](https://forums.visual-paradigm.com/t/reverse-engineering-in-intellij/18045 "2023-05-25T12:13:11Z")
Trying out the enterprise edition for 30 days. Integrated with Intellij (latest) Can’t figure out how to reverse engineer existing project / package / class(es) into UML diagrams. Does anyone know how to do this ? I op… --- ## [Usupported C++11 syntax (default|deleted) during C++ round-trip](https://forums.visual-paradigm.com/t/usupported-c-11-syntax-default-deleted-during-c-round-trip/17132)
**Author:** [@Sense](https://forums.visual-paradigm.com/u/Sense)\ **Replies:** 5\ **Last updated:** [October 27, 2022, 3:31pm UTC](https://forums.visual-paradigm.com/t/usupported-c-11-syntax-default-deleted-during-c-round-trip/17132 "2022-10-27T15:31:28Z")
Hello, VP c++ round-trip does not supprt C++11 systax for contructors: class\_name() = delete; class\_name() = default; and for destructors: ~class-name() = delete; ~class-name() = default; This does also go further… --- ## [Template specialization](https://forums.visual-paradigm.com/t/template-specialization/17717)
**Author:** [@andresmanelli](https://forums.visual-paradigm.com/u/andresmanelli)\ **Replies:** 0\ **Last updated:** [October 7, 2022, 4:15pm UTC](https://forums.visual-paradigm.com/t/template-specialization/17717 "2022-10-07T16:15:29Z")
Hello, I understand you cannot have two classes with the same name under the same parent, but how should you model a class that is a template specialization ? For example: template\ class MyClass { ... } te… --- ## [C# 10 support - file scoped namespace](https://forums.visual-paradigm.com/t/c-10-support-file-scoped-namespace/17513)
**Author:** [@nlyk](https://forums.visual-paradigm.com/u/nlyk)\ **Replies:** 2\ **Last updated:** [April 13, 2022, 2:41am UTC](https://forums.visual-paradigm.com/t/c-10-support-file-scoped-namespace/17513 "2022-04-13T02:41:10Z")
What is the version of the C# language currently supported; Are there any plans of supporting C# 10; Especially the file scoped namespace feature. --- ## ["Instant Reverse" works but "Reverse C++ Code..." fails](https://forums.visual-paradigm.com/t/instant-reverse-works-but-reverse-c-code-fails/17378)
**Author:** [@iseeder](https://forums.visual-paradigm.com/u/iseeder)\ **Replies:** 1\ **Last updated:** [January 24, 2022, 3:47am UTC](https://forums.visual-paradigm.com/t/instant-reverse-works-but-reverse-c-code-fails/17378 "2022-01-24T03:47:32Z")
Hello, I want to import an existing project into UML, perform changes and update the existing code. Instant Reverse worked surprisingly well, it imported all classes and created a diagram for each namespace. However, … --- ## [Shortcomings of C++ round trip engineering](https://forums.visual-paradigm.com/t/shortcomings-of-c-round-trip-engineering/16760)
**Author:** [@emmenlau](https://forums.visual-paradigm.com/u/emmenlau)\ **Replies:** 15\ **Last updated:** [January 24, 2022, 3:26am UTC](https://forums.visual-paradigm.com/t/shortcomings-of-c-round-trip-engineering/16760 "2022-01-24T03:26:26Z")
I found VP quite helpful for creating UML diagrams. But sadly the C++ round trip engineering seems very limited. After two or three iterations of round trip engineering it typically fails for us and leaves the diagram an… --- ## [Code Generation from Class Diagram: Composition between two classes does not change anything in generated Java code!](https://forums.visual-paradigm.com/t/code-generation-from-class-diagram-composition-between-two-classes-does-not-change-anything-in-generated-java-code/17061)
**Author:** [@VP41](https://forums.visual-paradigm.com/u/VP41)\ **Replies:** 1\ **Last updated:** [October 11, 2021, 2:02am UTC](https://forums.visual-paradigm.com/t/code-generation-from-class-diagram-composition-between-two-classes-does-not-change-anything-in-generated-java-code/17061 "2021-10-11T02:02:10Z")
I created two simple classes A and B, such that there there a COMPOSITION between these two classes. However, the generated code (in Java) is the same with OR without the composition between these two classes. In other w… --- ## [Support of -tags in Swagger / OpenAPI generation and reverse engineering](https://forums.visual-paradigm.com/t/support-of-tags-in-swagger-openapi-generation-and-reverse-engineering/16903)
**Author:** [@alunkeit](https://forums.visual-paradigm.com/u/alunkeit)\ **Replies:** 2\ **Last updated:** [July 7, 2021, 3:57am UTC](https://forums.visual-paradigm.com/t/support-of-tags-in-swagger-openapi-generation-and-reverse-engineering/16903 "2021-07-07T03:57:19Z")
Typically a swagger file allows the use of the -tags keyword to improve the structure of the Swagger / OpenAPI file. The support of this keyword is necessary for improving the round trip engineering process. --- ## [Support of securitySchemes in OpenAPI/Swagger generation and reverse engineering](https://forums.visual-paradigm.com/t/support-of-securityschemes-in-openapi-swagger-generation-and-reverse-engineering/16902)
**Author:** [@alunkeit](https://forums.visual-paradigm.com/u/alunkeit)\ **Replies:** 1\ **Last updated:** [July 6, 2021, 11:36pm UTC](https://forums.visual-paradigm.com/t/support-of-securityschemes-in-openapi-swagger-generation-and-reverse-engineering/16902 "2021-07-06T23:36:59Z")
Most APIs need a kind of authentication scheme. Currently it is not possible to define the security scheme in the swagger file. At least support for BasicAuth in OpenAPI 3.0 conformant API definitions is urgently require… --- ## [OpenAPI/yaml generation issue](https://forums.visual-paradigm.com/t/openapi-yaml-generation-issue/16889)
**Author:** [@Robert5](https://forums.visual-paradigm.com/u/Robert5)\ **Replies:** 2\ **Last updated:** [June 30, 2021, 3:05am UTC](https://forums.visual-paradigm.com/t/openapi-yaml-generation-issue/16889 "2021-06-30T03:05:13Z")
Doubled attribute in “required” section. Source UML: Resulting Yaml: Tested on VP v16.2 and 16.3 --- ## [Template type error in generating C# code by a class diagram](https://forums.visual-paradigm.com/t/template-type-error-in-generating-c-code-by-a-class-diagram/16810)
**Author:** [@TestVP](https://forums.visual-paradigm.com/u/TestVP)\ **Replies:** 9\ **Last updated:** [June 1, 2021, 2:23am UTC](https://forums.visual-paradigm.com/t/template-type-error-in-generating-c-code-by-a-class-diagram/16810 "2021-06-01T02:23:12Z")
Hi, I am trying to use the class diagram to generate C# code. The class diagram describes: class MyClass2 implements interface IMyClass2 class MyClass implements interface IMyClass class MyClass has a property named … --- ## [Php7/8 support?](https://forums.visual-paradigm.com/t/php7-8-support/16816)
**Author:** [@flexjoly](https://forums.visual-paradigm.com/u/flexjoly)\ **Replies:** 1\ **Last updated:** [May 17, 2021, 3:47am UTC](https://forums.visual-paradigm.com/t/php7-8-support/16816 "2021-05-17T03:47:30Z")
Hi, What is the status of php support in VP? I just downloaded the trial version (again) and tried to reverse engineer php, but that was not so succesfull. Most (namespaced) classes where not imported. Then I tried to… --- ## [REST API generation - Support for OpenAPI 3.x](https://forums.visual-paradigm.com/t/rest-api-generation-support-for-openapi-3-x/16664)
**Author:** [@Robert5](https://forums.visual-paradigm.com/u/Robert5)\ **Replies:** 5\ **Last updated:** [April 21, 2021, 5:46am UTC](https://forums.visual-paradigm.com/t/rest-api-generation-support-for-openapi-3-x/16664 "2021-04-21T05:46:48Z")
As VP supports the very old - Swagger 2.0 API standard (released on 9/08/2014), and the current standard is: OpenAPI 3.x (released on 2017-07-26) imho It’s high time to support professionals in their work (supporting o… --- ## [Reverse C++ code errors](https://forums.visual-paradigm.com/t/reverse-c-code-errors/16678)
**Author:** [@Max3](https://forums.visual-paradigm.com/u/Max3)\ **Replies:** 1\ **Last updated:** [March 15, 2021, 5:21am UTC](https://forums.visual-paradigm.com/t/reverse-c-code-errors/16678 "2021-03-15T05:21:05Z")
Hello, I’m trying to reverse a C++ project but one error appears \[Error\] Unable to read file C:\*\*\\src\\Obj\_Joint.h, Index -1 out of bounds for length 0 Here i can’t figure out what’s the problem, it doesn’t give me an… --- ## [Reverse Code for C# project Errors?](https://forums.visual-paradigm.com/t/reverse-code-for-c-project-errors/16669)
**Author:** [@Th0maz](https://forums.visual-paradigm.com/u/Th0maz)\ **Replies:** 1\ **Last updated:** [March 9, 2021, 12:50am UTC](https://forums.visual-paradigm.com/t/reverse-code-for-c-project-errors/16669 "2021-03-09T00:50:32Z")
hi, i am evaluating if it is with this version possible to reverse code a C# VS 2019 projects. ( From DLL´s ) even i have my own code ? But anyhow it´s not working. Can you please give advice how i can reverse it into VP… --- ## [Rest API from ERD diagram](https://forums.visual-paradigm.com/t/rest-api-from-erd-diagram/16605)
**Author:** [@Jerzy\_Stachera](https://forums.visual-paradigm.com/u/Jerzy_Stachera)\ **Replies:** 1\ **Last updated:** [February 6, 2021, 2:04pm UTC](https://forums.visual-paradigm.com/t/rest-api-from-erd-diagram/16605 "2021-02-06T14:04:04Z")
Hi, Is there any way to generate REST API from ERD diagram? BR, Jurek --- ## [Uml class diagram model update - new class](https://forums.visual-paradigm.com/t/uml-class-diagram-model-update-new-class/16485)
**Author:** [@emil\_peric](https://forums.visual-paradigm.com/u/emil_peric)\ **Replies:** 3\ **Last updated:** [December 11, 2020, 1:10am UTC](https://forums.visual-paradigm.com/t/uml-class-diagram-model-update-new-class/16485 "2020-12-11T01:10:19Z")
Hi I am evaluating VP and find that updating the UML class diagram is not working when I add new class in the java project. Using eclipse plugin. VP version 16.2, Eclipse version 2020-06, VP Eclipse plugin 1.0.1 More i… --- ## [Using stl containers like std::vector\ in class diagram and to generate C++ code](https://forums.visual-paradigm.com/t/using-stl-containers-like-std-vector-myclass-in-class-diagram-and-to-generate-c-code/16320)
**Author:** [@Nitroxleecher](https://forums.visual-paradigm.com/u/Nitroxleecher)\ **Replies:** 2\ **Last updated:** [September 9, 2020, 6:58am UTC](https://forums.visual-paradigm.com/t/using-stl-containers-like-std-vector-myclass-in-class-diagram-and-to-generate-c-code/16320 "2020-09-09T06:58:24Z")
Hi Folks I need to create UML class diagrams and then generate C++ code from that. I need to use stl containers like std::vector for my own classes. Specific example: Class Person contains attribute std::vector which… [Next page](https://forums.visual-paradigm.com/tag/code-engineering/28.md?match_all_tags=true&page=1&tags%5B%5D=code-engineering)