## 1.5.5 / 2014-05-23

* Enhancements
 * Oracle NUMBER datatype can be handled as Rails :float datatype [#418]
   - Default NUMBER datatype handled as :decimal to keep compatibility
   - Configured by setting `self.number_datatype_coercion = :float` 
 * Add link to supported Oracle database version, JDK and Oracle JDBC Driver version [#438]
 * Support `without_prepared_statements?` to handle `unprepared_statement` [#447]

* Bug Fix
  * Associations with name `record` do not work correctly since Rails 4 [#435]
  * Skip another Oracle Text test when Oracle 12c used [#437]
  * Tag bind params with a bind param object [#444]

## 1.5.4 / 2014-03-25

* Enhancements
 * Support Rails 4.1.0.rc2
 * Allow Java 8 to run with jruby [#383]

* Bug Fix
  * Fix db:schema:dump when foreign key column name is not 'id' [#409]
  * Fix schema dump works when non Oracle adapter used [#428]

## 1.5.3 / 2014-03-04

* Enhancements
 * Supports Rails 4.1.0.rc1
 * Support rails/rails#13886 by chainging select_rows arguments [#415]

* Bug Fix
  * Fix ORA-01008: not all variables bound [#422]

## 1.5.2 / 2014-01-24

* Enhancements
 * Supports Rails 4.1.0.beta1
 * Support Rails 4 Database Tasks [#404]
 * Create sequence when add primary_key column [#406]
 * Move `SchemaCreation` to its own file [#381]
 * Remove unused OracleEnhancedColumnDefinition [#382]
 * Log bind variables after they were type casted [#385]
 * Remove add_order_by_for_association_limiting! [#388]
 * Support named savepoints [#389]
 * Support self.extract_value_from_default [#395]
 * Remove oracle_enhanced_core_ext.rb [#397]
 * Remove unused to_sql_with_foreign_keys and lob_columns [#398]
 * Remove ruby-oci8 v1 code [#405]

* Bug Fix
  * Move add_column_options! into SchemaCreation class [#384]
  * Add options_include_default! [#384]
  * Use OCI8::Metadata::Base#obj_link [#399]

## 1.5.1 / 2013-11-30

* Enhancements
 * Removed set_table_name set_primary_key set_sequence_name from unit tests [#364]
 * Update README to support assignment methods [#365]
 * Remove add_limit_offset! method [#369]
 * Update Gemfile to use `bundle config --local` [#370]
 * `describe` does not try super when no datbase link and ORA-4043 returned [#375]
 * Support `remove_columns` [#377]
 * Dump views in alphabetical order and add `FORCE` option [#378]

* Bug Fix
 * Fixed reverting add_column fails with v1.5.0 [#373]

## 1.5.0 / 2013-11-01

* Enhancements
 * Add license in gemspec and Rakefile [#361]

## 1.5.0.rc1 / 2013-10-31

* Update README and HISTORY
* No other changes since 1.5.0.beta1

## 1.5.0.beta1 / 2013-10-28

* Enhancements and major changes
 * Support Rails 4.0
 * Desupport Rails 3.2 and lower version. To support Rails 3.2, use Version 1.4.3
 * Drop session store support [#219]
 * Create indexes automatically for references and belongs_to [#183]
 * Use the index name explicitly provided in a migration when reverting [#296]
 * Rename indexes when a table or column is renamed [#286]
 * Support refactored remove_column [#172] 
 * Support allowed_index_name_length method [#285]
 * Remove schema prefix from sequence name if present before truncating [#155]
 * Bumped jeweler, ruby-plsql and ruby-oci8 version [#176]
 * Support also ojdbc6.jar for Java 1.7 [#350]
 * Support "activerecord-deprecated_finders" [#210]
 * Prepared statements can be disabled [#295]
 * Ensure disconnecting or reconnecting resets the transaction state [#220]
 * Support for specifying transaction isolation level [#226]
 * Rename the partial_updates config to partial_writes [#234]
 * Deprecate passing a string as third argument of add_index [#242]
 * Rename update method to update_record, create method to create_record [#273]
 * Deprecate #connection in favour of accessing it via the class [#297]
 * Support SchemaCreation [#298]
 * Add support for foreign key creation in create_table [#317]
 * Add virtual columns support for rail4 branch [#329]
 * Support columns_for_distinct method [#340]
 * Clear index cache when any table dropped [#200]
 * Clear index cache when remove_column executed [#269]
 * Dump schema uses ruby 1.9 style hash [#229]
 * Support _field_changed? and drop field_changed? [#182 #254]
 * Use arel nodes instead of raw sql [#198]
 * Raise an ArgumentError when passing an invalid option to add_index [#242]
 * Split OracleEnhancedColumnDumper from OracleEnhancedSchemaDumper [#292]
 * Unit test sets default_timezone = :local [#184]
 * Support reset_pk_sequence! [#287]
 * Remove unnecessary pendings in unit tests [#358]

* Bug Fix
 * Address ArgumentError: wrong number of arguments (5 for 3) [#166]
 * Address NoMethodError: undefined method `column_types' [#173]
 * Schema dumper removes table_name_prefix and table_name_suffix [#191]
 * Add clear_logger to address ArgumentError: wrong number of arguments (1 for 2) [#193]
 * Use Relation#to_a as Relation#all is deprecated in Rails [#203]
 * Address Address test_integer_zero_to_integer_zero_not_marked_as_changed failure [#207]
 * Address NoMethodError undefined method `default_string' [#221]
 * Address you can't redefine the primary key column 'id'. To define a custom primary key, pass { id: false } to create_table [#238]
 * Remove unnecessary DEPRECATION WARNING [#255]
 * Assigning "0.0" to a nullable numeric column does not make it dirty [#293]
 * Address `rake spec` abort [#353]
 * Correct activerecord-deprecated_finders not loaded if ENV['RAILS_GEM_VERSION'] set [#353]

* Known Issues
 * Oracle Text features are not fully supported with Oracle 12c [#331]

### 1.4.3 / 2013-10-24

* No changes since 1.4.3.rc2

### 1.4.3.rc2 / 2013-10-23

* Change build procedures
* No other changes since 1.4.3.rc1

### 1.4.3.rc1 / 2013-10-19

* Enhancements:
  * Allow inserting NULL to Oracle Spatial Data Types such as MDSYS.SDO_GEOMETRY [#311]
  * Support ojdbc7.jar JDBC Driver [#335]

* Bug fixes:
  * Fixed Gemfile to bundle update work [#294]
  * Fixed broken links in README.md and RUNNING_TESTS.md [#303 #306]
  * Address rename_table works if the source table created with :id => false [#336]
  * Use expand_path to show VERSION with Windows XP

### 1.4.2 / 2013-03-18

* No changes since 1.4.2.rc2

### 1.4.2.rc2 / 2013-03-01

* Bug fixes:
  * Do not consider the numeric attribute as changed if the old value is zero and the new value is not a string [#247]
  * Removed table_name_prefix and table_name_suffix when schema dumper executed [#248]
  * Remove_column should raise an ArgumentError when no columns are passed [#246]
  * Don't dump type for NUMBER virtual columns [#256]
  * Address :returning_id column should be of type Column [#274]
  * Migrated versions should be dumped in order [#277]
  * Always write serialized LOB columns [#275]
  * Truncate the schema_migrations index [#276]
  * Split paths on windows machines in the right way [#231]

### 1.4.2.rc1 / 2012-11-13

* Enhancements:
  * Wordlist option for context index [#154]
  * Fall back to directly connecting via OracleDriver on JRuby [#163]
  * Allow slash-prefixed database name in database.yml for using a service [#201]
* Bug fixes:
  * Fixed explain plans to work with JDBC and OCI8 [#146]
  * Fixed various issues with virtual columns [#159]
  * Fixed SQL structure dump with function indexes [#161]
  * Fixed broken column remove inside a change_table block [#216]
  * Dump indexes on virtual columns using the column's name instead of the column expression [#211]
  * Don't update lobs that haven't changed or are attr_readonly [#212]
  * Support dirty tracking with rails 3.2.9

### 1.4.1 / 2012-01-27

* Enhancements:
  * Support for Rails 3.2
  * Support for ActiveRecord 3.2 explain plans [#116]
  * Support for ActiveRecord 3.1 statement pool, to avoid `ORA-01000` maximum open cursors exceeded (default `statement_limit` is 250 and can be changed in `database.yml`) [#100]
  * Added error handling for `rename_table` method in migrations [#137]
* Bug fixes:
  * Store primary key as `nil` in cache at first time for table without primary key [#84]
  * Fixed inserting records with decimal type columns (`ORA-01722` invalid number exceptions) [#130]
  * Check virtual columns only in models that are using `oracle-enhanced` adapter, to avoid problems when using multiple database adapters [#85]
  * Don't drop the user in rake `db:create` and `db:drop` tasks [#103]
  * Don't add `db:create` and `db:drop` when ActiveRecord is not used as the primary datastore [#128]
  * Quote column names in LOB statements to avoid `ORA-00936` errors [#91]
  * Don't add the `RETURNING` clause if using `composite_primary_keys` gem [#132]
  * Added `join_to_update` method that is necessary for ActiveRecord 3.1 to ensure that correct UPDATE statement is generated using `WHERE ... IN` subquery with offset condition

### 1.4.0 / 2011-08-09

* Enhancements:
  * Support for Rails 3.1
  * Bind parameter support for exec_insert, exec_update and exec_delete (in ActiveRecord 3.1)
  * Purge recyclebin on rake db:test:purge
  * Support transactional context index
  * Require ojdbc6.jar (on Java 6) or ojdbc5.jar (on Java 5) JDBC drivers
  * Support for RAW data type
  * rake db:create and db:drop tasks
  * Support virtual columns (in Oracle 11g) in schema dump
  * It is possible to specify default tablespaces for tables, indexes, CLOBs and BLOBs
  * rename_index migrations method
  * Search for JDBC driver in ./lib directory of Rails application
* Bug fixes:
  * Fixed context index dump when definition is larger than 4000 bytes
  * Fixed schema dump not to conflict with other database adapters that are used in the same application
  * Allow $ in table name prefix or suffix

### 1.3.2 / 2011-01-05

* Enhancements:
  * If no :host or :port is provided then connect with :database name (do not default :host to localhost)
  * Database connection pool support for JRuby on Tomcat and JBoss application servers
  * NLS connection parameters support via environment variables or database.yml
  * Support for Arel 2.0 and latest Rails master branch
  * Support for Rails 3.1 prepared statements (implemented in not yet released Rails master branch version)
  * Eager loading of included association with more than 1000 records (implemented in not yet released Rails master branch version)
* Bug fixes:
  * Foreign keys are added after table definitions in schema dump to ensure correct order of schema statements
  * Quote NCHAR and NVARCHAR2 type values with N'...'
  * Numeric username and/or password in database.yml will be automatically converted to string

### 1.3.1 / 2010-09-09

* Enhancements:
  * Tested with Rails 3.0.0 release
  * Lexer options for context index creation
  * Added Bundler for running adapter specs, added RUNNING_TESTS.rdoc with description how to run specs
  * Connection to database using :host, :port and :database options
  * Improved loading of adapter in Rails 3 using railtie
* Bug fixes:
  * Fix for custom context index procedure when indexing records with null values
  * Quote table and column names in write_lobs callback
  * Fix for incorrect column SQL types when two models use the same table and AR query cache is enabled
  * Fixes for schema and scructure dump tasks
  * Fix for handling of zero-length strings in BLOB and CLOB columns
  * removed String.mb_chars upcase and downcase methods for Ruby 1.9 as Rails 3.0.0 already includes Unicode aware upcase and downcase methods for Ruby 1.9
  * Fixes for latest ActiveRecord unit tests

### 1.3.0 / 2010-06-21

* Enhancements:
  * Rails 3.0.0.beta4 and Rails 2.3.x compatible
  * When used with Rails 3 then works together with Oracle SQL compiler included in Arel gem (http://github.com/rails/arel)
  * Rails 3: Better support for limit and offset (when possible adds just ROWNUM condition in WHERE clause without using subqueries)
  * Table and column names are always quoted and in uppercase to avoid the need for checking Oracle reserved words
  * Full text search index creation (add_context_index and remove_context_index methods in migrations and #contains method in ActiveRecord models)
  * add_index and remove_index give just warnings on wrong index names (new expected behavior in Rails 2.3.8 and 3.0.0)
  * :tablespace and :options options for create_table and add_index
* Workarounds:
  * Rails 3: set ActiveRecord::ConnectionAdapters::OracleEnhancedAdapter.cache_columns = true in initializer file for all environments
    (to avoid too many data dictionary queries from Arel)
  * Rails 2.3: patch several ActiveRecord methods to work correctly with quoted table names in uppercase (see oracle_enhanced_activerecord_patches.rb).
    These patches are already included in Rails 3.0.0.beta4.
* Bug fixes:
  * Fixes for schema purge (drop correctly materialized views)
  * Fixes for schema dump and structure dump (use correct statement separator)
  * Only use Oracle specific schema dump for Oracle connections

### 1.2.4 / 2010-02-23

* Enhancements:
  * rake db:test:purge will drop all schema objects from test schema (including views, synonyms, packages, functions, procedures) -
    they should be always reloaded before tests run if necessary
  * added views, synonyms, packages, functions, procedures, indexes, triggers, types, primary, unique and foreign key constraints to structure dump
  * added :temporary option for create_table to create temporary tables
  * added :tablespace option for add_index
  * support function based indexes in schema dump
  * support JNDI database connections in JRuby
  * check ruby-oci8 minimum version 2.0.3
  * added savepoints support (nested ActiveRecord transactions)
* Bug fixes:
  * typecast returned BigDecimal integer values to Fixnum or Bignum
    (to avoid issues with _before_type_cast values for id attributes because _before_type_cast is used in form helpers)
  * clear table columns cache after columns definition change in migrations

### 1.2.3 / 2009-12-09

* Enhancements
  * support fractional seconds in TIMESTAMP values
  * support for ActiveRecord 2.3.5
  * use ENV['TZ'] to set database session time zone
    (as a result DATE and TIMESTAMP values are retrieved with correct time zone)
  * added cache_columns adapter option
  * added current_user adapter method
  * added set_integer_columns and set_string_columns ActiveRecord model class methods
* Bug fixes:
  * do not raise exception if ENV['PATH'] is nil
  * do not add change_table behavior for ActiveRecord 2.0 (to avoid exception during loading)
  * move foreign key definitions after definition of all tables in schema.rb
    (to avoid definition of foreign keys before all tables are created)
  * changed timestamp format mask to use ':' before fractional seconds
    (workaround to avoid table detection in tables_in_string method in ActiveRecord associations.rb file)
  * fixed custom create/update/delete methods with ActiveRecord 2.3+ and timestamps
  * do not call oracle_enhanced specific schema dump methods when using other database adapters

### 1.2.2 / 2009-09-28

* Enhancements
  * improved RDoc documentation of public methods
  * structure dump optionally (database.yml environment has db_stored_code: yes) extracts
    packages, procedures, functions, views, triggers and synonyms
  * automatically generated too long index names are shortened down to 30 characters
  * create tables with primary key triggers
  * use 'set_sequence_name :autogenerated' for inserting into legacy tables with trigger populated primary keys
  * access to tables over database link (need to define local synonym to remote table and use local synonym in set_table_name)
  * [JRuby] support JDBC connection using TNS_ADMIN environment variable and TNS database alias
  * changed cursor_sharing option default from 'similar' to 'force'
  * optional dbms_output logging to ActiveRecord log file (requires ruby-plsql gem)
  * use add_foreign_key and remove_foreign_key to define foreign key constraints
    (the same syntax as in http://github.com/matthuhiggins/foreigner and similar
    to http://github.com/eyestreet/active_record_oracle_extensions)
  * raise RecordNotUnique and InvalidForeignKey exceptions if caused by corresponding ORA errors
    (these new exceptions are supported just by current ActiveRecord master branch)
  * implemented disable_referential_integrity
    (enables safe loading of fixtures in schema with foreign key constraints)
  * use add_synonym and remove_synonym to define database synonyms
  * add_foreign_key and add_synonym are also exported to schema.rb
* Bug fixes:
  * [JRuby] do not raise LoadError if ojdbc14.jar cannot be required (rely on application server to add it to class path)
  * [JRuby] 'execute' can be used to create triggers with :NEW reference
  * support create_table without a block
  * support create_table with Symbol table name
  * use ActiveRecord functionality to do time zone conversion
  * rake tasks such as db:test:clone are redefined only if oracle_enhanced is current adapter in use
  * VARCHAR2 and CHAR column sizes are defined in characters and not in bytes (expected behavior from ActiveRecord)
  * set_date_columns, set_datetime_columns, ignore_table_columns will work after reestablishing connection
  * ignore :limit option for :text and :binary columns in migrations
  * patches for ActiveRecord schema dumper to remove table prefixes and suffixes from schema.rb

### 1.2.1 / 2009-06-07

* Enhancements
  * caching of table indexes query which makes schema dump much faster
* Bug fixes:
  * return Date (and not DateTime) values for :date column value before year 1970
  * fixed after_create/update/destroy callbacks with plsql custom methods
  * fixed creation of large integers in JRuby
  * Made test tasks respect RAILS_ENV
  * fixed support for composite primary keys for tables with LOBs

### 1.2.0 / 2009-03-22

* Enhancements
  * support for JRuby and JDBC
  * support for Ruby 1.9.1 and ruby-oci8 2.0
  * support for Rails 2.3
  * quoting of Oracle reserved words in table names and column names
  * emulation of OracleAdapter (for ActiveRecord unit tests)
* Bug fixes:
  * several bug fixes that were identified during running of ActiveRecord unit tests

### 1.1.9 / 2009-01-02

* Enhancements
  * Added support for table and column comments in migrations
  * Added support for specifying sequence start values
  * Added :privilege option (e.g. :SYSDBA) to ActiveRecord::Base.establish_connection
* Bug fixes:
  * Do not mark empty decimals, strings and texts (stored as NULL in database) as changed when reassigning them (starting from Rails 2.1)
  * Create booleans as VARCHAR2(1) columns if emulate_booleans_from_strings is true

### 1.1.8 / 2008-10-10

* Bug fixes:
  * Fixed storing of serialized LOB columns
  * Prevent from SQL injection in :limit and :offset
  * Order by LOB columns (by replacing column with function which returns first 100 characters of LOB)
  * Sequence creation for tables with non-default primary key in create_table block
  * Do count distinct workaround only when composite_primary_keys gem is used
    (otherwise count distinct did not work with ActiveRecord 2.1.1)
  * Fixed rake db:test:clone_structure task
    (see http://rsim.lighthouseapp.com/projects/11468/tickets/11-rake-dbtestclone_structure-fails-in-117)
  * Fixed bug when ActiveRecord::Base.allow_concurrency = true
    (see http://dev.rubyonrails.org/ticket/11134)

### 1.1.7 / 2008-08-20

* Bug fixes:
  * Fixed that adapter works without ruby-plsql gem (in this case just custom create/update/delete methods are not available)

### 1.1.6 / 2008-08-19

* Enhancements:
  * Added support for set_date_columns and set_datetime_columns
  * Added support for set_boolean_columns
  * Added support for schema prefix in set_table_name (removed table name quoting)
  * Added support for NVARCHAR2 column type
* Bug fixes:
  * Do not call write_lobs callback when custom create or update methods are defined
    
### 1.1.5 / 2008-07-27

* Bug fixes:
  * Fixed that write_lobs callback works with partial_updates enabled (added additional record lock before writing BLOB data to database)
* Enhancements:
  * Changed SQL SELECT in indexes method so that it will execute faster on some large data dictionaries
  * Support for other date and time formats when assigning string to :date or :datetime column

### 1.1.4 / 2008-07-14

* Enhancements:
  * Date/Time quoting changes to support composite_primary_keys
  * Added additional methods that are used by composite_primary_keys

### 1.1.3 / 2008-07-10

* Enhancements:
  * Added support for custom create, update and delete methods when working with legacy databases where
    PL/SQL API should be used for create, update and delete operations

### 1.1.2 / 2008-07-08

* Bug fixes:
  * Fixed after_save callback addition for session store in ActiveRecord version 2.0.2
  * Changed date column name recognition - now should match regex /(^|_)date(_|$)/i
    (previously "updated_at" was recognized as :date column and not as :datetime)

### 1.1.1 / 2008-06-28

* Enhancements:
  * Added ignore_table_columns option
  * Added support for TIMESTAMP columns (without fractional seconds)
  * NLS_DATE_FORMAT and NLS_TIMESTAMP_FORMAT independent DATE and TIMESTAMP columns support
* Bug fixes:
  * Checks if CGI::Session::ActiveRecordStore::Session does not have enhanced_write_lobs callback before adding it
    (Rails 2.0 does not add this callback, Rails 2.1 does)

### 1.1.0 / 2008-05-05

* Forked from original activerecord-oracle-adapter-1.0.0.9216
* Renamed oracle adapter to oracle_enhanced adapter
  * Added "enhanced" to method and class definitions so that oracle_enhanced and original oracle adapter
    could be used simultaniously
  * Added Rails rake tasks as a copy from original oracle tasks
* Enhancements:
  * Improved perfomance of schema dump methods when used on large data dictionaries
  * Added LOB writing callback for sessions stored in database
  * Added emulate_dates_by_column_name option
  * Added emulate_integers_by_column_name option
  * Added emulate_booleans_from_strings option