java - Get table column names in Hibernate

Question

I am using hibernate Criteria class to get all records of table :

Criteria criteria = session.createCriteria(AppTaskConfig.class)

I would like to get column names also as I need to convert result set into JSON format.

Answer 1

To get the column names, first you need to find the properties of the entity using org.hibernate.metadata.ClassMetadata:

ClassMetadata classMetadata = sessionFactory.getClassMetadata(AppTaskConfig.class);
String[] propertyNames = classMetadata.getPropertyNames();

where propertyNames is an array of Strings representing the property names of AppTaskConfig.

Now using Hibernate org.hibernate.cfg.Configuration object you can find the column names of the properties:

for (String property : propertyNames) {
    Configuration configuration = sessionFactoryBean.getConfiguration();
    PersistentClass persistentClass = configuration
                    .getClassMapping(Details.class.getName());
    String columnName = ((Column) persistentClass.getProperty(property)
                    .getColumnIterator().next()).getName();
}