Provides access to configuration info passed in Properties objects.

Hibernate has two property scopes:

• Factory-level properties may be passed to the SessionFactory when it instantiated. Each instance might have different property values. If no properties are specified, the factory calls Environment.getProperties().
• System-level properties are shared by all factory instances and are always determined by the Environment properties.

The only system-level properties are

• hibernate.jdbc.use_streams_for_binary
• hibernate.cglib.use_reflection_optimizer

Environment properties are populated by calling System.getProperties() and then from a resource named /hibernate.properties if it exists. System properties override properties specified in hibernate.properties.

The SessionFactory is controlled by the following properties. Properties may be either be System properties, properties defined in a resource named /hibernate.properties or an instance of java.util.Properties passed to Configuration.buildSessionFactory()

property	meaning
hibernate.dialect	classname of org.hibernate.dialect.Dialect subclass
hibernate.cache.provider_class	classname of org.hibernate.cache.CacheProvider subclass (if not specified EHCache is used)
hibernate.connection.provider_class	classname of org.hibernate.connection.ConnectionProvider subclass (if not specified hueristics are used)
hibernate.connection.username	database username
hibernate.connection.password	database password
hibernate.connection.url	JDBC URL (when using java.sql.DriverManager)
hibernate.connection.driver_class	classname of JDBC driver
hibernate.connection.isolation	JDBC transaction isolation level (only when using java.sql.DriverManager)
hibernate.connection.pool_size	the maximum size of the connection pool (only when using java.sql.DriverManager)
hibernate.connection.datasource	databasource JNDI name (when using javax.sql.Datasource)
hibernate.jndi.url	JNDI InitialContext URL
hibernate.jndi.class	JNDI InitialContext classname
hibernate.max_fetch_depth	maximum depth of outer join fetching
hibernate.jdbc.batch_size	enable use of JDBC2 batch API for drivers which support it
hibernate.jdbc.fetch_size	set the JDBC fetch size
hibernate.jdbc.use_scrollable_resultset	enable use of JDBC2 scrollable resultsets (you only need this specify this property when using user supplied connections)
hibernate.jdbc.use_getGeneratedKeys	enable use of JDBC3 PreparedStatement.getGeneratedKeys() to retrieve natively generated keys after insert. Requires JDBC3+ driver and JRE1.4+
hibernate.hbm2ddl.auto	enable auto DDL export
hibernate.default_schema	use given schema name for unqualified tables (always optional)
hibernate.default_catalog	use given catalog name for unqualified tables (always optional)
hibernate.session_factory_name	If set, the factory attempts to bind this name to itself in the JNDI context. This name is also used to support cross JVM Session (de)serialization.
hibernate.transaction.manager_lookup_class	classname of org.hibernate.transaction.TransactionManagerLookup implementor
hibernate.transaction.factory_class	the factory to use for instantiating Transactions. (Defaults to JDBCTransactionFactory.)
hibernate.query.substitutions	query language token substitutions