uml - Model, Meta-model and Meta-metamodel - Stack Overflow
2019年9月4日 · A meta-metamodel is a model of a language for defining modeling languages, defining (the abstract syntax of) a modeling language definition language. In your meta-model example you define the modeling language elements "classes" and (binary directed) "associations". But you should better use "source" and "destination" as association end names.
How to generate the JPA entity Metamodel? - Stack Overflow
Go to Properties -> JPA dialog. Select source folder from Canonical metamodel (JPA 2.0) group. Click Apply button to generate metamodel classes in the selected source folder. This should work on any JPA provider as the generated classes are standard.
How to generate JPA Metamodel with Gradle 5.x - Stack Overflow
2019年1月16日 · First, we need to include the Hibernate JPA Model Generator (the org.hibernate:hibernate-jpamodelgen artifact) in the annotationProcessor configuration. This configuration instructs the Java compiler to use the Hibernate JPA Model Generator during the annotation processing phase, generating JPA metamodel classes from your entities at compile …
Newest 'apache-metamodel' Questions - Stack Overflow
2020年4月30日 · Apache metamodel is throwing exception when trying to get sum of very large number of numeric data. I am new to apache metamodel. I am using it for getting sum of any numeric column in a database table using following code: Object object = null; long sum = 0; String ... java. apache-metamodel.
What is @StaticMetamodel and SingularAttribute<Obj,Obj>?
2013年10月31日 · A static metamodel is a series of classes that "mirror" the entities and embeddables in the domain model and provide static access to the metadata about the mirrored class's attributes. The static metamodel has the following properties: For each managed class X in package p, a metamodel class X_ in package p is created.
Apache MetaModel - bad performance querying spreadsheet
2016年6月30日 · 1. The excel DataContext implementation does it's unwrapping and parsing of the zipped .xlsx file in the background. This means that the DataContext.executeQuery(...) method returns quickly but the DataSet.next() call that comes right after it has to wait for the data to be available in memory.
java - Generating metamodel classes using maven and eclipse …
2011年12月15日 · This hibernate tutorial explains how to use the generator with maven and eclipse but separately. I think what I'm missing is gluing my pom, which was generated as a simple no archetype pom, and my eclipse project configuration so that they enable me to do some JPA magic. BTW, following the above tutorial for maven caused my maven-generated jars ...
Eclipselink 2.5 Metamodel Generation using Maven
I would like to know how to generate static metamodels using Maven and Eclipselink 2.5. It worked fine by adding this lines to pom.xml when running Eclipselink 2.4. // Generate meta model for eclipselink 2.4 (does not work for 2.5) <plugin>. <groupId>org.bsc.maven</groupId>. <artifactId>maven-processor-plugin</artifactId>.
updating an excel file with apache metamodel - Stack Overflow
You are not missing anything. The ExcelDataContext is not providing it's own update behavior. It is defaulting to use apache meta-model's default store agnostic implementation for updating the data. That implementation of UpdateCallback uses DeleteAndInsertCallback which is causing the behavior you are observing.
UML Metamodel for associations between diagrams
2018年2月9日 · 1. Yes, metamodel explains how various elements of a model can be connected. Diagrams itself represent poets puff the model and it is also described in a metamodel. While it's not always clearly shown how to actually represent that, for example each behavioral model represent behavior of something.