changelog.txt

人力资源管理系统 系统把几乎所有与人力资源相关的数据统一管理

* added big_integer type
* improved dirty checking for timestamp type

Changes in version 1.1.0 (22.9.2002)
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* implemented collection indexing with [] in query language
* fixed some minor query-language bugs

Changes in version 1.1 beta 14 (19.9.2002)
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* bags now implement java.util.List
* delete() may now take a transient object
* bug where sorted collections were not being sorted fixed by Brad Clow
* fixed a bug in many-to-many association filtering
* no longer try to query connection metadata when using user-supplied connections
* added hibernate.use_scrollable_resultsets for user-supplied connections
* fixed a problem where sublists were not being proxied
* fixed a problem where Hibernate could not call methods of package-visibility classes
* removed obsolete select attribute from MapGenerator
* multiple occurrences of same path in a query no longer require multiple joins
* added WrongClassException

Changes in version 1.1 beta 13 (15.9.2002)
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* added constants to Lifecycle interface
* fix for circular cascade="save/update"
* fixed a bug in cascaded update introduced in version 1.1 beta 11
* added object type

Changes in version 1.1 beta 12 (14.9.2002)
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* Session.filter() for applying a filter query to collections
* experimental ODMG API (OQL features are not yet compliant)
* new DBCPConnectionProvider for Apache commons-dbcp connection pool
* Session.lock() now does version number check even on databases with no FOR UPDATE clause
* introduced new cascade styles: cascade="save/update", cascade="delete"
* added default-cascade attribute
* foreign key columns lengths now automatically set to primary key column lengths for SchemaExport
* added error checking of row update counts when batching disabled
* major improvements to ProxyGenerator tool
* CodeGenerator now aware of proxy attribute
* integrated PointbaseDialect contributed by Ed Mackenzie
* fix for problem where Proxies were being initialized on identifier access by Christoph Sturm

Changes in version 1.1 beta 11 (7.9.2002)
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* deprecated update() in favor of saveOrUpdate() and introduced unsaved-value attribute of <id>
* children mapped with cascade="all" are now always saved/updated even without a call to update(parent)
* support for composite-id classes where the composite id consists of properties of the persistent class
* added constrained attribute to <one-to-one> element
* added Validatable interface
* renamed several config properties (Hibernate issues log warnings for obsolete property usage)
* arbitrary JDBC connection properties may now be passed using hibernate.connection.*
* fixed a classloading bug in C3P0ConnectionProvider (introduced in 1.1 beta 10)
* CodeGenerator may now take multiple mapping files on the commandline

Changes in version 1.1 beta 10 (28.8.2002)
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* fixed a bug that occurred when calling Session.update() for an object with no properties
* changed class loading to use the context classloader first
* introduced <timestamp> as an alternative to <version>
* added Query.getReturnTypes()
* fixed a bug with composite-elements introduced in 1.1 beta 7
* save() may now be used to persist classes with composite-ids
* improved handling of nanoseconds values in Timestamps
* support for composite id properties + objects in select clause of iterate()
* beefed-up collection tests

Changes in version 1.1 beta 9 (26.8.2002)
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* fixed a bug introduced in 1.1 beta 8 that could cause an NPE after deserializing a session with proxies
* deprecated insert() in favor of more flexible save()
* deprecated IDGenerator in favor of new IdentifierGenerator interface
* "assigned" id generator now returns the existing value of the id property instead of throwing an Exception
* fixed a problem where PreparedStatements were not being recached after retrieving a natively generated id

Changes in version 1.1 beta 8 (25.8.2002)
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* fixed a bug introduced in 1.1 beta 6 where an updated element of an indexed one-to-many collection caused an SQLException
* uninitialized collections passed to update() may now be initialized in the new Session
* uninitialized proxies passed to update() may now be initialized in the new Session

Changes in version 1.1 beta 7 (23.8.2002)
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* fixed a bug where Hibernate was not returning statements to the cache when batch updates were disabled
* fixed a bad bug parsing mappings with toplevel one-to-many associations
* fixed a bug with versioning and subcollections
* reworked Set updates again for much improved efficiency
* schema export now creates primary keys for indexed collection tables
* minor refactor to Type hierarchy
* improved some user-error detection
* fixed foreign key constraint creation for MySQL with Innodb tables

Changes in version 1.1 beta 6b (20.8.2002)
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* Fixed a problem updating Sets
* added <bag> mapping for java.util.Collection

Changes in version 1.1 beta 6 (20.8.2002)
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* completely reworked fetching code
- one-to-many associations now always fetched in a single select
- many-to-many associations fetched in a single select when outerjoin fetching is enabled 
- this includes nested outerjoin fetching of the associated class!
- outerjoin fetching for <many-to-one> nested inside <component> or <composite-element>
- code refactored to be cleaner and faster
* removed unnecessary order by clause in List and array fetching SQL
* collections now individually update, insert and delete only rows that changed (thanks to Doug Currie)
* fixed a problem where exceptions were being wrapped in a LazyInitializationException for non-lazy collections
* added order-by attribute to <set> and <map> to specify a table column as defining the iteration order (JDK1.4 only)
* improved error detection in Session.update()
* further usage of JDBC2 batch updates
* some fine-tuning of JDBC2 feature usage configuration
* CodeGenerator will now generate components and arrays
* fixed problem where CodeGenerator could not generate classes in the default package
* improved logging of flush() activity
* renamed property hibernate.use_jdbc2 to hibernate.use_jdbc_batch

Changes in version 1.1 beta 5 (13.8.2002)
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* hibernate.query.imports property to allow use of unqualified classnames in queries
* fixed a bug in collection flushing that was introduced in 1.1 beta 4

Changes in version 1.1 beta 4 (11.8.2002)
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* JMX integration (thanks to John Urberg)
* "having" clause in query language

Changes in version 1.1 beta 3 (10.8.2002)
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* removed the select="all" attribute for <class> mappings - "select distinct" now specified in the hibernate query
* system properties now override hibernate.properties
* Session now flushes changes even less often (only when actual updates to the queried table(s) are waiting)
* fixed a *very* rare problem where an unnecessary update could be accidently issued before a delete

Changes in version 1.1 beta 2 (6.8.2002)
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* fixed a bug exporting schemas with identity columns
* implemented factory-level caching of collections
* Datastore.storeJar() contributed by Christian Meunier
* added <mapping jar="jarfile"> to hibernate.cfg.xml

Changes in version 1.1 beta 1 (4.8.2002)
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* new Query API including named parameters, pageable results
* subqueries in Hibernate queries (only for databases that support subselects)
* new DocBook documentation (contributed by Christian Bauer)
* support collections .elements, .indices inside select clause (even in aggregate functions)
* don't load collections before removal unless absolutely necessary
* mutable="false" attribute in <class> element to map immutable classes
* use JDBC batch to insert collection elements if hibernate.use_jdbc2 is set
* brand new PreparedStatementCache
* improvements to MYSQL dialect for long datatypes
* always check isAccessible() before setAccessible(true)
* removed extra unnecessary table join in queries with one-to-many association
* removed ugly "WHERE 1=1" from generated SQL
* fixed exception mapping a class with no properties (fix by Rob Stokes)
* logging enhancements including SQLException logging
* reworked factory-level cache and integrated JCS support (thanks to Christian Meunier)
* fixed a bug with circular references in cached data
* removed blocking cache support
* now rendering outerjoins as "LEFT OUTER JOIN" because "LEFT JOIN" caused problems for some Sybase versions
* added default Hibernate properties to Dialects
* native id generation now falls back to sequence id generation when identity columns not supported by the dialect
* fixed some problems with native id generation under HSQL
* may now use Session.insert() even when using native id generation

Changes in version 1.0.1b (18.7.2002)
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* fixed a bad bug in query parser when hibernate.query.substitutions was unset
* much improved build.xml Ant script
* latest c3p0.jar

Changes in version 1.0.1 (17.7.2002)
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* enabled use of scalar values and aggregate SQL functions in select clause of iterate() queries
* fixed bug in JNDI lookup for SessionFactory
* changed ordering of SQL inserts/deletes for child collections of a cascade-enabled association 
- better behaviour for some not-null constraints
- performance optimization for bidirectional many-to-one associations
* added hibernate.query.substitutions property to allow named query constants (eg. translate 'true' to '1')
* added locale type for java.util.Locale
* added sequence hi/lo generator (seqhilo.long)
* fixed bug where load(), onLoad() callbacks were sometimes called at wrong time
* fixed an exception (fix by Eric Everman) and improved identifier searching in MapGenerator tool 
* refactored SerializableType
* extra logging + error handling
* documentation enhancements

Changes in version 0.9.17 (3.7.2002)
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* Added UserType interface
* documented Lifecycle
* added some new trace messages to log
* bugfix to allow SQL functions like upper(), lower(), etc to work on all platforms
* documented SAP DB support (dialect contributed by Brad Clow)
* foreign key constraint export for SAP DB
* map index may be the composite-id of the element class (contributed by Jon Lipsky)
* fixes to CodeGenerator tool (contributed by Uros Jurglic)

Changes in version 0.9.16 (19.6.2002)
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* fixed bug cacheing objects with references to themselves
* support for composite ids of classes with no id property
* may now disable outer join (deep) fetching for an association by setting outer-join="false"
* enabled outer join fetching for one-to-one
* fixed a bug for mappings that specify class attribute of <one-to-many>
* fixed a bug where Hashbelt did not expire cached data in a timely fashion
* fixed a mistake in the mapping DTD
* new user-error check in update()

Changes in version 0.9.15 (15.6.2002)
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* one-to-one associations
* support for "tricky" mappings in SchemaExport tool (multiple properties to one column, etc)
* Transaction API contributed by Anton van Straaten
* SessionFactory may be bound to JNDI name by setting hibernate.session_factory_name
* Sessions are now Serializable!
* added Session.findIdentifiers() query methods
* new Lifecycle interface to replace deprecated PersistentLifecycle
* fixed problem where session did not autoflush on iterate() queries
* performance enhancements to collection dirty checking
* added Hibernate.configure() and configuration file format
* removed some deprecated methods
* refactored Type hierarchy