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authorJeremy Kemper <jeremy@bitsweat.net>2005-11-13 07:24:50 +0000
committerJeremy Kemper <jeremy@bitsweat.net>2005-11-13 07:24:50 +0000
commit068d9ef0effb8bfbcaf23f990335c0c867e5a1d7 (patch)
treef7e117b4b323aa177af2c3a610e1f838a81783bc /activerecord
parent077ae340e8c3013dd43ebcc8023d183dfdd52d4a (diff)
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Much faster Oracle column reflection. References #2848.
git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@2996 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
Diffstat (limited to 'activerecord')
-rw-r--r--activerecord/CHANGELOG2
-rw-r--r--activerecord/lib/active_record/connection_adapters/oci_adapter.rb38
2 files changed, 24 insertions, 16 deletions
diff --git a/activerecord/CHANGELOG b/activerecord/CHANGELOG
index 70e6e8b32c..4c3938a64a 100644
--- a/activerecord/CHANGELOG
+++ b/activerecord/CHANGELOG
@@ -1,5 +1,7 @@
*SVN*
+* Much faster Oracle column reflection. #2848 [Michael Schoen <schoenm@earthlink.net>]
+
* Base.reset_sequence_name analogous to reset_table_name (mostly useful for testing). Base.define_attr_method allows nil values. [Jeremy Kemper]
* PostgreSQL: smarter sequence name defaults, stricter last_insert_id, warn on pk without sequence. [Jeremy Kemper]
diff --git a/activerecord/lib/active_record/connection_adapters/oci_adapter.rb b/activerecord/lib/active_record/connection_adapters/oci_adapter.rb
index bdbf6b2e5d..2c6aa83817 100644
--- a/activerecord/lib/active_record/connection_adapters/oci_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/oci_adapter.rb
@@ -316,23 +316,29 @@ begin
table_name = table_name.to_s.upcase
owner = table_name.include?('.') ? "'#{table_name.split('.').first}'" : "user"
table = "'#{table_name.split('.').last}'"
+ scope = (owner == "user" ? "user" : "all")
+
+ table_cols = %Q{
+ select column_name, data_type, data_default, nullable,
+ case when data_type = 'NUMBER' then data_precision
+ when data_type = 'VARCHAR2' then data_length
+ else null end as length,
+ case when data_type = 'NUMBER' then data_scale
+ else null end as scale
+ from #{scope}_catalog cat, #{scope}_synonyms syn, all_tab_columns col
+ where cat.table_name = #{table}
+ and syn.synonym_name (+)= cat.table_name
+ and col.table_name = nvl(syn.table_name, cat.table_name)
+ and col.owner = nvl(syn.table_owner, #{(scope == "all" ? "cat.owner" : "user")}) }
+
+ if scope == "all"
+ table_cols << %Q{
+ and cat.owner = #{owner}
+ and syn.owner (+)= cat.owner }
+ end
- select_all(%Q{
- select column_name, data_type, data_default, nullable,
- case when data_type = 'NUMBER' then data_precision
- when data_type = 'VARCHAR2' then data_length
- else null end as length,
- case when data_type = 'NUMBER' then data_scale
- else null end as scale
- from all_catalog cat, all_synonyms syn, all_tab_columns col
- where cat.owner = #{owner}
- and cat.table_name = #{table}
- and syn.owner (+)= cat.owner
- and syn.synonym_name (+)= cat.table_name
- and col.owner = nvl(syn.table_owner, cat.owner)
- and col.table_name = nvl(syn.table_name, cat.table_name)
- }).map do |row|
- row['data_default'].gsub!(/^'(.*)'\s*$/, '\1') if row['data_default']
+ select_all(table_cols).map do |row|
+ row['data_default'].gsub!(/^'(.*)'$/, '\1') if row['data_default']
OCIColumn.new(
oci_downcase(row['column_name']),
row['data_default'],