Class: DBI::DBD::OCI8::Database
- Inherits:
-
BaseDatabase
- Object
- BaseDatabase
- DBI::DBD::OCI8::Database
- Includes:
- Util
- Defined in:
- lib/DBD/OCI8/OCI8.rb
Defined Under Namespace
Classes: DummyQuoter
Constant Summary
Constants included from Util
Instance Method Summary collapse
- #[](attr) ⇒ Object
- #[]=(attr, value) ⇒ Object
-
#columns(table) ⇒ Object
SQLs are copied from DBD::Oracle.
- #commit ⇒ Object
- #disconnect ⇒ Object
- #ping ⇒ Object
- #prepare(statement) ⇒ Object
- #rollback ⇒ Object
- #tables ⇒ Object
Methods included from Util
Instance Method Details
#[](attr) ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 275 def [](attr) case attr when 'AutoCommit' @handle.autocommit? end end |
#[]=(attr, value) ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 282 def []=(attr, value) case attr when 'AutoCommit' @handle.autocommit = value end end |
#columns(table) ⇒ Object
SQLs are copied from DBD::Oracle.
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# File 'lib/DBD/OCI8/OCI8.rb', line 213 def columns(table) tab = @handle.describe_table(table) cols = tab.columns cols.collect! do |col| (col) end dbh = DBI::DatabaseHandle.new(self) pk_index_name = nil dbh.select_all(<<EOS, tab.obj_schema, tab.obj_name) do |row| select index_name from all_constraints where constraint_type = 'P' and owner = :1 and table_name = :2 EOS pk_index_name = row[0] end indices = {} primaries = {} uniques = {} dbh.select_all(<<EOS, tab.obj_schema, tab.obj_name) do |row| select a.column_name, a.index_name, b.uniqueness from all_ind_columns a, all_indexes b where a.index_name = b.index_name and a.index_owner = b.owner and a.table_owner = :1 and a.table_name = :2 EOS col_name, index_name, uniqueness = row indices[col_name] = true primaries[col_name] = true if index_name == pk_index_name uniques[col_name] = true if uniqueness == 'UNIQUE' end dbh.select_all(<<EOS, tab.obj_schema, tab.obj_name).collect do |row| select column_id, column_name, data_default from all_tab_columns where owner = :1 and table_name = :2 EOS col_id, col_name, default = row col = cols[col_id.to_i - 1] col_name = col['name'] if default && default[0] == ?' default = default[1..-2].gsub(/''/, "'") end col['indexed'] = indices[col_name] || false col['primary'] = primaries[col_name] || false col['unique'] = uniques[col_name] || false col['default'] = default col end rescue OCIException => err raise_dbierror(err) end |
#commit ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 193 def commit @handle.commit() rescue OCIException => err raise_dbierror(err) end |
#disconnect ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 167 def disconnect @handle.logoff rescue OCIException => err raise_dbierror(err) end |
#ping ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 186 def ping @handle.exec("BEGIN NULL; END;") true rescue false end |
#prepare(statement) ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 173 def prepare( statement ) # convert ?-style parameters to :1, :2 etc. prep_statement = DBI::SQL::PreparedStatement.new(DummyQuoter.new, statement) if prep_statement.unbound.size > 0 arr = (1..(prep_statement.unbound.size)).collect{|i| ":#{i}"} statement = prep_statement.bind( arr ) end cursor = @handle.parse(statement) Statement.new(cursor) rescue OCIException => err raise_dbierror(err) end |
#rollback ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 199 def rollback @handle.rollback() rescue OCIException => err raise_dbierror(err) end |
#tables ⇒ Object
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# File 'lib/DBD/OCI8/OCI8.rb', line 205 def tables stmt = execute("SELECT object_name FROM user_objects where object_type in ('TABLE', 'VIEW')") rows = stmt.fetch_all || [] stmt.finish rows.collect {|row| row[0]} end |