如何导出hibernate模式> 4.3 [英] How to export the schema for hibernate > 4.3

问题描述

但是对于Hibernate 4.3来说，类 org.hibernate.ejb.Ejb3Configuration 被删除，我无法找到任何替代品。
如何以编程方式生成休眠版本> = 4.3的ddl脚本？
因为我使用spring来设置实体管理器，所以我也不必再使用persitence.xml，我想这样保留它。

[1] http://techblog.bozho.net/?p=935

解决方案

我用 org.reflections 来扫描类路径，这些类用@Entity注释并添加到配置中。

另外我添加了
AuditConfiguration.getFor（CFG）;
生成审计表。

之后，我使用已经提到的SchemaExport导出了Schema。

  //设置包扫描
 Reflections reflections = new Reflections（my.packages.dao）; 
 
 //找到用@Entity 
注解的所有类Set< Class<>> typesAnnotatedWith = reflections.getTypesAnnotatedWith（Entity.class）; 
 
 //创建最小配置
配置cfg = new Configuration（）; 
 cfg.setProperty（hibernate.dialect，org.hibernate.dialect.PostgreSQLDialect）; 
 cfg.setProperty（hibernate.hbm2ddl.auto，create）; 
 
 for（Class <？> c：typesAnnotatedWith）{
 cfg.addAnnotatedClass（c）; 
} 
 
 //构建所有映射，然后调用AuditConfiguration 
 cfg.buildMappings（）; 
 
 //配置Envers 
 AuditConfiguration.getFor（cfg）; 
 
 //执行导出
 SchemaExport export = new SchemaExport（cfg）; 
 export.setOutputFile（fileName）; 
 export.setDelimiter（;）; 
 export.setFormat（true）; 
 
 export.execute（true，false，false，true）; 
  

There are many post on how to export programmatically a schema with hibernate (e.g. [1]).

But with Hibernate 4.3 the class org.hibernate.ejb.Ejb3Configuration got removed and I could not find any replacement for it. How can I programmatically generate the ddl script with a hibernate version >=4.3? Since I'm using spring for setting up the entity manger, I also don't have to use a persitence.xml anymore and I would like to keep it that way.

[1] http://techblog.bozho.net/?p=935

解决方案

I used org.reflections to scan the classpath for classes that are annotated with @Entity and added them to the configuration.

Additionally I added AuditConfiguration.getFor(cfg); to generate the Audit tables.

After that I used the already mentioned SchemaExport to export the Schema.

    //set the package to scan
    Reflections reflections = new Reflections("my.packages.dao");

    //find all classes annotated with @Entity        
    Set<Class<?>> typesAnnotatedWith = reflections.getTypesAnnotatedWith(Entity.class);

    //create a minimal configuration
    Configuration cfg = new Configuration();
    cfg.setProperty("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
    cfg.setProperty("hibernate.hbm2ddl.auto", "create");

    for(Class<?> c : typesAnnotatedWith){
        cfg.addAnnotatedClass(c);
    }

    //build all the mappings, before calling the AuditConfiguration
    cfg.buildMappings();

    //configure Envers
    AuditConfiguration.getFor(cfg);

    //execute the export
    SchemaExport export = new SchemaExport(cfg);
    export.setOutputFile(fileName);
    export.setDelimiter(";");
    export.setFormat(true);

    export.execute(true, false, false, true);

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