Question

作为休眠升级的一部分，我无法配置会话工厂。在运行时，根据系统变量，我们使用schema或mock_schema。我们在postProcessConfiguration中进行自定义。

在生成会话工厂的过程中，我不清楚在哪里挂接代码，也不清楚弹簧流。

从休眠状态我有一个解决方案。https://vladmihalcea.com/how-to-get-the-entity-mapping-to-database-table-binding-metadata-from-hibernate/#comments

如何让多个集成商说MetadataExtractorIntegrator和EventListenerIntegrator。
如何配置CustomLocalSessionFactoryBean（扩展LocalSessionFactoryBean）。
我可以在不覆盖LocalSessionFactoryBean的情况下做到吗？

如何从配置中获取/修改getCollectionMappings？

公共类CustomHibernateSessionFactoryBean扩展了org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean {

@Inject
private DatabasePlatform dbPlatform;

@Inject
private ApplicationContext applicationContext;

@Override
protected SessionFactory newSessionFactory(Configuration config) {
    config.setProperty(DatabasePlatform.HIBERNATE_DIALECT_KEY, this.dbPlatform.getDialectClass().getName());

    //Many such event listeners
    config.getEventListeners().setUpdateEventListeners(sortAndConcat(config.getEventListeners().getUpdateEventListeners(),saveOrUpdateEventListeners));

    return super.newSessionFactory(config);
}

@Override
protected void postProcessConfiguration(Configuration config) {
    super.postProcessConfiguration(config);

    if (!DatabasePlatform.INVENTORY_SCHEMA.equals(DatabasePlatform.DEFAULT_INVENTORY_SCHEMA)) {
        logger.info("Overriding inventory schema name to %s", DatabasePlatform.INVENTORY_SCHEMA);
        Iterator<PersistentClass> classIterator = config.getClassMappings();

        while (classIterator.hasNext()) {
            PersistentClass persistentClass = classIterator.next();
            replaceSchemaName(persistentClass.getTable());
            Iterator<Join> joinIterator = persistentClass.getJoinIterator();
            while (joinIterator.hasNext()) {
                replaceSchemaName(joinIterator.next().getTable());
            }

            Iterator<org.hibernate.mapping.Collection> collectionIterator = config.getCollectionMappings();
            while (collectionIterator.hasNext()) {
                replaceSchemaName(collectionIterator.next().getCollectionTable());
            }
        }
    }
}

private void replaceSchemaName(Table table) {
    if (DatabasePlatform.DEFAULT_INVENTORY_SCHEMA.equals(table.getSchema())) {
        table.setSchema(DatabasePlatform.INVENTORY_SCHEMA);
    }
    if (table.getName().startsWith(DatabasePlatform.DEFAULT_INVENTORY_SCHEMA + ".")) {
        table.setName(table.getName().replaceFirst(DatabasePlatform.DEFAULT_INVENTORY_SCHEMA, DatabasePlatform.INVENTORY_SCHEMA));
    }
}

}

我正在为休眠5尝试的新代码

@SuppressWarnings("unused")
public class CustomHibernateSessionFactoryBean extends org.springframework.orm.hibernate5.LocalSessionFactoryBean {

    @Inject
    private ApplicationContext applicationContext;

    private static final SystemLogger logger = SystemLogger.getLogger(CustomHibernateSessionFactoryBean.class);

    @Inject
    private DatabasePlatform dbPlatform;

    private AsyncTaskExecutor bootstrapExecutor;

    private EventListenerIntegrator eventListenerIntegrator;

    private final RegionFactory regionFactory;

    private boolean metadataSourcesAccessed;

    private MetadataSources metadataSources;

    public CustomHibernateSessionFactoryBean() {
        // TODO: Check what is the effect of regionFactory not being set
        regionFactory = null;
    }

    CustomHibernateSessionFactoryBean(RegionFactory regionFactory, EventListenerIntegrator eventListenerIntegrator) {
        this.regionFactory = regionFactory;
        this.eventListenerIntegrator = eventListenerIntegrator;
    }

    CustomHibernateSessionFactoryBean(EventListenerIntegrator eventListenerIntegrator) {
        this.regionFactory = null;
        this.eventListenerIntegrator = eventListenerIntegrator;
    }

    @Override
    public void setMetadataSources(MetadataSources metadataSources) {
        Assert.notNull(metadataSources, "MetadataSources must not be null");
        this.metadataSourcesAccessed = true;
        this.metadataSources = metadataSources;
    }

    @Override
    public MetadataSources getMetadataSources() {
        this.metadataSourcesAccessed = true;
        if (this.metadataSources == null) {
            BootstrapServiceRegistryBuilder builder = new BootstrapServiceRegistryBuilder();
            ResourcePatternResolver resourcePatternResolver = (ResourcePatternResolver) getResourceLoader();
            if (resourcePatternResolver != null) {
                builder = builder.applyClassLoader(resourcePatternResolver.getClassLoader()).applyIntegrator(eventListenerIntegrator);
            }
            this.metadataSources = new MetadataSources(builder.build());
        }
        return this.metadataSources;
    }

    @Override
    protected SessionFactory buildSessionFactory(LocalSessionFactoryBuilder sfb) {

        getConfiguration().setProperty(DatabasePlatform.HIBERNATE_DIALECT_KEY, this.dbPlatform.getDialectClass().getName());
        if (!DatabasePlatform.INVENTORY_SCHEMA.equals(DatabasePlatform.DEFAULT_INVENTORY_SCHEMA)) {
            logger.info("Overriding inventory schema name to %s", DatabasePlatform.INVENTORY_SCHEMA);
            Metadata metadata = getMetadataSources().getMetadataBuilder().build();
            Collection<PersistentClass> entityBindings = metadata.getEntityBindings();

            for (Iterator<PersistentClass> iterator = entityBindings.iterator(); iterator.hasNext();) {
                PersistentClass persistentClass = iterator.next();
                replaceSchemaName(persistentClass.getTable());
                @SuppressWarnings("unchecked")
                Iterator<Join> joinIterator = persistentClass.getJoinIterator();
                while (joinIterator.hasNext()) {
                    replaceSchemaName(joinIterator.next().getTable());
                }
            }
        }
        return (this.bootstrapExecutor != null ? sfb.buildSessionFactory(this.bootstrapExecutor) : sfb.buildSessionFactory());

    }

    private void replaceSchemaName(Table table) {
        if (DatabasePlatform.DEFAULT_INVENTORY_SCHEMA.equals(table.getSchema())) {
            table.setSchema(DatabasePlatform.INVENTORY_SCHEMA);
        }
        if (table.getName().startsWith(DatabasePlatform.DEFAULT_INVENTORY_SCHEMA + ".")) {
            table.setName(table.getName().replaceFirst(DatabasePlatform.DEFAULT_INVENTORY_SCHEMA, DatabasePlatform.INVENTORY_SCHEMA));
        }
    }
}

为什么需要自定义localsessionFactoryBean？

I have 2 need for using SessionFactoryBean
    1. Normal application
    2. Dbtest

In normal application, schema1 is populated by other process
In Dbtest, i need to use mock_schema1 instead of schema1 so that we will not rewrite data populated by other application.

@ Table(name = “cluster”, schema = “schema1”)
@ SecondaryTable(name = “Cluster”, schema = “schema2”, pkJoinColumns = @ PrimaryKeyJoinColumn(name = “clusterId”, referencedColumnName = “objid”))
@ org.hibernate.annotations.Table(appliesTo = “Cluster”, optional = false)
@ Entity
@ OptimisticLocking(type = OptimisticLockType.DIRTY)
@ DynamicUpdate
public class Cluster implements Serializable {

} 但是，如果您看到我的实体定义在运行时使用“ schema1”，那么如果我正在运行Dbtest，我希望实体使用“ mock_schema1”而不是“ schema1”

================================================ ======================== 这是对 M的答复。 Deinum 的问题：

在我的测试中，设置 hibernate.default_schema 不会达到我的目的。

例如作为dbtest的一部分，如果我设置并保存集群实体，它将尝试填充嘲笑_schema2和schema1。取而代之的是我想要schema2和mock_schema1。

请帮我配置Custom LocalSessionFactoryBean

0 个答案: