Module: OracleEnhancedAdapterConstraintsMethods

Defined in:
lib/active_record/connection_adapters/oracle_enhanced_adapter.rb

Instance Method Summary collapse

Instance Method Details

#constraints(table_name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_adapter.rb', line 34

def constraints(table_name)
  (owner, table_name) = @connection.describe(table_name)

  # RSI: changed select from all_constraints to user_constraints - much faster in large data dictionaries
  fks = select_rows("    select c.constraint_name, c.search_condition\n      from user_constraints c\n    where c.owner = '\#{owner}'\n      and c.table_name = '\#{table_name}'\n      and c.constraint_type = 'C'\n      and c.generated = 'USER NAME'\n      and c.status = 'ENABLED'\n  SQL\nend\n", 'User Contraints')

#foreign_keys_for(table_name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_adapter.rb', line 3

def foreign_keys_for(table_name)
  (owner, table_name) = @connection.describe(table_name)

  # RSI: changed select from all_constraints to user_constraints - much faster in large data dictionaries
  fks = select_rows("    select parent_c.table_name, cc.column_name\n      from user_constraints c, user_constraints parent_c, user_cons_columns cc\n    where c.owner = '\#{owner}'\n      and c.table_name = '\#{table_name}'\n      and c.r_constraint_name = parent_c.constraint_name\n      and c.constraint_type = 'R'\n      and cc.owner = c.owner\n      and cc.constraint_name = c.constraint_name\n  SQL\nend\n", 'Foreign Keys')

#foreign_keys_of(table_name) ⇒ Object 



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# File 'lib/active_record/connection_adapters/oracle_enhanced_adapter.rb', line 18

def foreign_keys_of(table_name)
  (owner, table_name) = @connection.describe(table_name)

  # RSI: changed select from all_constraints to user_constraints - much faster in large data dictionaries
  fks = select_rows("    select c.table_name, cc.column_name\n      from user_constraints c, user_constraints parent_c, user_cons_columns cc\n    where c.owner = '\#{owner}'\n      and parent_c.table_name = '\#{table_name}'\n      and c.r_constraint_name = parent_c.constraint_name\n      and c.constraint_type = 'R'\n      and cc.owner = c.owner\n      and cc.constraint_name = c.constraint_name\n  SQL\nend\n", 'Remote Foriegn Keys')