Module: DbStructureExt::MysqlDumpMethods

Included in:
MysqlAdapter
Defined in:
lib/db_structure_ext/mysql_dump_methods.rb

Instance Method Summary collapse

Instance Method Details

#routines_dump ⇒ Object

dump mysql routines: procedures and functions



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# File 'lib/db_structure_ext/mysql_dump_methods.rb', line 74

def routines_dump
  structure = ""
  return structure unless supports_routines?

  sql = "SELECT ROUTINE_TYPE as type, ROUTINE_NAME as name FROM INFORMATION_SCHEMA.ROUTINES WHERE ROUTINE_SCHEMA='#{current_database}'"

  select_all(sql).each do |row|
    structure << select_one("SHOW CREATE #{row['type']} #{row['name']}")["Create #{row['type'].capitalize}"]
    structure.gsub!(/^(CREATE).+(PROCEDURE|FUNCTION)/, '\1 \2')
    structure << ";\n\n"
  end

  structure
end

#structure_dump ⇒ Object 



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# File 'lib/db_structure_ext/mysql_dump_methods.rb', line 89

def structure_dump
  structure = ""
  structure << tables_dump
  structure << views_dump
  structure << triggers_dump
  structure << routines_dump
  structure
end

#tables_dump ⇒ Object

Dump mysql base tables



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# File 'lib/db_structure_ext/mysql_dump_methods.rb', line 5

def tables_dump
  structure = ""

  sql = supports_views? ?
    "SHOW FULL TABLES WHERE Table_type = 'BASE TABLE'" : "SHOW TABLES"

  table_names = select_all(sql).map { |table|
    table.delete('Table_type')
    table.to_a.first.last
  }

  table_names.each do |table_name|
    structure << select_one("SHOW CREATE TABLE `#{table_name}`")["Create Table"]
    structure << ";\n\n"
  end

  structure
end

#triggers_dump ⇒ Object

dump mysql triggers



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# File 'lib/db_structure_ext/mysql_dump_methods.rb', line 59

def triggers_dump
  structure = ""
  return structure unless supports_triggers?

  sql = "SHOW TRIGGERS"

  select_all(sql).each do |row|
    structure << "CREATE TRIGGER #{row['Trigger']} #{row['Timing']} #{row['Event']} ON #{row['Table']} FOR EACH ROW #{row['Statement']}"
    structure << ";\n\n"
  end

  structure
end

#views_dump ⇒ Object

Dump mysql views



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# File 'lib/db_structure_ext/mysql_dump_methods.rb', line 25

def views_dump
  structure = ""
  return structure unless supports_views?

  table_names = select_all("SHOW FULL TABLES WHERE Table_type = 'VIEW'").map { |table|
    table.delete('Table_type')
    table.to_a.first.last
  }

  # Temporary structure
  table_names.each do |table_name|
    fields = select_all("SHOW FIELDS FROM #{table_name}")
    structure << "CREATE TABLE #{table_name} (\n"
    structure << fields.map { |field| "  #{quote_column_name(field['Field'])} #{field['Type']}" }.join(",\n")
    structure << "\n) ENGINE=MyISAM"
    structure << ";\n\n"
  end

  # Final structure
  table_names.each do |table_name|
    structure << "DROP TABLE IF EXISTS #{table_name}" 
    structure << ";\n\n"
    structure << "DROP VIEW IF EXISTS #{table_name}"
    structure << ";\n\n"
    structure << select_one("SHOW CREATE VIEW #{table_name}")["Create View"] 
    structure << ";\n\n"
  end

  structure.gsub!(/^(CREATE).+(VIEW)/, '\1 \2')

  structure
end