Class: DbDiff::Delta::ModifyColumn

Inherits:
DbDiff::Delta show all
Defined in:
lib/dbdiff/delta.rb

Direct Known Subclasses

ModifyColumnAddAI, ModifyColumnRemoveAI

Instance Attribute Summary

Attributes inherited from DbDiff::Delta

#element

Instance Method Summary collapse

Methods inherited from DbDiff::Delta

#initialize, #table, #to_a

Constructor Details

This class inherits a constructor from DbDiff::Delta

Instance Method Details

#process(database) ⇒ Object 



39
40
41
42
43
44
 
# File 'lib/dbdiff/delta.rb', line 39

def process(database)
  table = table(database)
  old_column = table.columns.find{|c| c.name == element.name}
  table.columns.delete(old_column)
  table.columns << element
end

#sql ⇒ Object 



35
36
37
 
# File 'lib/dbdiff/delta.rb', line 35

def sql
   "ALTER table #{element.table_name} MODIFY COLUMN " + element.definition
end