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Diffstat (limited to 'activerecord/CHANGELOG')
| -rw-r--r-- | activerecord/CHANGELOG | 33 |
1 files changed, 18 insertions, 15 deletions
diff --git a/activerecord/CHANGELOG b/activerecord/CHANGELOG index 667ea44d3b..20f5efcb88 100644 --- a/activerecord/CHANGELOG +++ b/activerecord/CHANGELOG @@ -1,5 +1,23 @@ *SVN* +* Added a OCI8-based Oracle adapter that has been verified to work with Oracle 8 and 9 #629 [Graham Jenkins]. Usage notes: + + 1. Key generation uses a sequence "rails_sequence" for all tables. (I couldn't find a simple + and safe way of passing table-specific sequence information to the adapter.) + 2. Oracle uses DATE or TIMESTAMP datatypes for both dates and times. Consequently I have had to + resort to some hacks to get data converted to Date or Time in Ruby. + If the column_name ends in _at (like created_at, updated_at) it's created as a Ruby Time. Else if the + hours/minutes/seconds are 0, I make it a Ruby Date. Else it's a Ruby Time. + This is nasty - but if you use Duck Typing you'll probably not care very much. + In 9i it's tempting to map DATE to Date and TIMESTAMP to Time but I don't think that is + valid - too many databases use DATE for both. + Timezones and sub-second precision on timestamps are not supported. + 3. Default values that are functions (such as "SYSDATE") are not supported. This is a + restriction of the way active record supports default values. + 4. Referential integrity constraints are not fully supported. Under at least + some circumstances, active record appears to delete parent and child records out of + sequence and out of transaction scope. (Or this may just be a problem of test setup.) + * Added TimeZone as the first of a number of value objects that Active Record will start shipping to provide incentatives to use rich value objects using composed_of #688 [Jamis Buck] * Added option :schema_order to the PostgreSQL adapter to support the use of multiple schemas per database #697 [YuriSchimke] @@ -53,21 +71,6 @@ inheritance_column { original_inheritance_column + "_id" } end -* Added an Oracle adapter that works with the Oracle bindings by Yoshida (http://raa.ruby-lang.org/project/oracle/) #564 [Maik Schmidt] - - A number of caveats: - - 1. You have to create a sequence for every table that need an auto-generated primary key. - The sequence name is built by appending "_id" to the according table_name, - i.e. if you have a table called "employees", you have to create a sequence called "employees_id". - - 2. The data type TIME is not supported, because Oracle does not support it. - - 3. Binary data (BLOBs etc.) are currently not supported. Will be fixed soon. - - 4. LIMIT clauses with OFFSET are not supported, because I could not find a way to simulate this behaviour using ROWNUM and "SELECT *". - - * Fixed Base#clone for use with PostgreSQL #565 [hanson@surgery.wisc.edu] |