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Questions tagged [metamodel]

Metamodel is a collection of concepts (frames, rules, terms, constraints, models and theories) that are applicable and useful for modeling a predefined class of problems.

A model is an abstraction of phenomena in the real world; a metamodel is yet another abstraction, highlighting properties of the model itself. A model conforms to its metamodel in the way that a computer program conforms to the grammar of the programming language in which it is written.

Metamodeling, or meta-modeling in software engineering and systems engineering among other disciplines, is the analysis, construction and development of the frames, rules, constraints, models and theories applicable and useful for modeling a predefined class of problems.

Metamodeling is usually defines of a collection of concepts within a certain domain.

cf. wikipedia

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How can I use the entitymanager metamodel to find fields with certain properties

I wonder if it is possible to use the entitymanager metamodel to scan over loaded entities to identify fields with certain properties during a test. For example I want to see if any fields are defined as strings with a "max length of 1" to report…
Kai
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JPA Metamodel Generator: change folder and package

Is that possible to change the folder that JPA Metamodel generates? By default, it puts on "target/generated-sources/annotations". For me it's strange to generate them inside "target", I would like to map it in git, target is not a folder to be…
tpcordeiro
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Is there an equivalent org.hibernate:hibernate-jpamodelgen for @Entity class written in groovy?

We use Groovy, not Java, and I can't find any annotation processor to auto generate JPA metamodel class from the @Entity class written in Groovy.
Luan Nguyen
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How to define a ns uri modeltype for an own RDF Schema metamodel in qvto?

I've built an RDF schema Metamodel and want to define a modeltype for my RDF Schema. I've these files : a metamodel uml (KB3Import.uml) and an other one in rdf schema (MyFirstProfile_CIMSdF_v6.rdf) So I'd to do something like this on qvto…
Rolfdu88
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ECL - showing differences results for debugging

i'm using Epsilon Comparison Language for the first time. I am writing a code in order to compare two models, in particular i want to show some information on the default output stream console when the code finds differences between the models. I…
Daniele Oriana
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Metamodel and the Persistence.xml file

I'm new to Spring Framework and trying to create dynamic search queries for an sql database- similar to what is described in the below thread. Filtering database rows with spring-data-jpa and spring-mvc This thread provided a useful guide however…
Bronwyn Young
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OWL Terminology - Names for Metamodel Description

I am trying to represent a metamodel using OWL/RDF but I need to make sure that I use the correct OWL elements to describe my metamodel elements. My metamodel has node and connector elements. All of them have properties/attributes (non-OWL…
wikitect
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Meta-model of language grammar using ANTLR4 (Java, Python)

TextX is a DSL (Domain-Specific Languages) parser simular to ANTLR4. In the TextX tutorial, it demonstrates how to create a meta-model from the grammar file. For example, given this grammar: Entity: 'entity' name=ID '{' …
joshlk
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Is there a Simple OSLC Metamodel Showing Entities and Relationships?

There seems to be any amount of RDF-format for the OSLC but what I'm looking for is a simple E-R-like view of the OSLC metamodel which shows the concepts and relationships which can be used to understand the organisation and possible queries. Is…
wikitect
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Problems to import ISO20022 E-Repository into Eclipse

I am trying to open the ISO20022 e-repository in Eclipse. I already imported the .ecore file and generated the plugins, but when I try to open the .iso20022 file eclipse stops responding. I tried with Eclipse 2019-06 and Eclipse Mars 2 for…
Dionathan
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CompileJava failed to find metamodel and failed

I've has a project for at least a year and would compile fine. now when i try to compile the metamodels are missing and the compilejava task is failing. I'm not sure if the issues is because there is a version issue or what. keep in mind that before…
Gruneich3
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How to realise a 'sequence diagram' without using uml sequence diagram metamodel

I'm working on a description of a scenario by using sequence diagram. and i would like to define the metamodel without having all the uml element for the SD. Kind of creation of my own SD. the problem is i don't know the steps to follow. does…
Gustave
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How to implement a circular dependency in JPA with a class in the middle of it

I have the following problem in java/spring. I tried to simplify at maximum my problem with a more concrete case. To summarize, we have a class Country and each country is linked to many City. Each City is linked to another with an intermediate…
Chouch
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I don't get the UML metamodel hierarchy

I'm working on a model-to-model transformation with UML activity diagram model as a target model. For this reason I'm looking for a activity diagram metamodel. However, my search wasn't really successful. I read a lot of OMG specifications and I'm…
ramy
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java.lang.SecurityException: class "org.eclipse.emf.ecore.resource.URIConverter$Loadable"'s

Someone help me why I am getting this error? java.lang.SecurityException: class "org.eclipse.emf.ecore.resource.URIConverter$Loadable"'s signer information does not match signer information of other classes in the same package at…
Sofiane belhadj kacem
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