Class: DbMeta::Oracle::TableDataCollection

Inherits:
Object
  • Object
show all
Includes:
Helper
Defined in:
lib/db_meta/oracle/types/table_data_collection.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Helper

#block, #create_folder, #pluralize, #remove_folder, #type_sequence, #write_buffer_to_file

Constructor Details

#initialize(args = {}) ⇒ TableDataCollection

Returns a new instance of TableDataCollection.



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 8

def initialize(args = {})
  @name = args[:name]
  @type = args[:type]
  @status = :valid
  @extract_type = :default
  @tables = args[:tables]
end

Instance Attribute Details

#collection ⇒ Object (readonly)

Returns the value of attribute collection.



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 6

def collection
  @collection
end

#extract_type ⇒ Object (readonly)

Returns the value of attribute extract_type.



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 6

def extract_type
  @extract_type
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 6

def name
  @name
end

#status ⇒ Object (readonly)

Returns the value of attribute status.



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 6

def status
  @status
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 6

def type
  @type
end

Instance Method Details

#ddl_drop ⇒ Object 



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 51

def ddl_drop
  "-- will automatically be dropped with table object"
end

#extract(args = {}) ⇒ Object 



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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 16

def extract(args = {})
  buffer = [block(@name)]
  buffer << "set define off;"
  buffer << "set sqlblanklines on;"
  buffer << nil

  connection = Connection.instance.get

  @tables.each do |table|
    Log.info("Extracting data from #{table.name}...")

    buffer << block(table.name, 40)

    name_type_map = {}
    table.columns.each do |column|
      name_type_map[column.name] = column.type
    end

    statement = "select * from #{table.name} #{table.get_core_data_where_clause}"
    cursor = connection.exec(statement)
    cursor.fetch_hash do |item|
      buffer << "insert into #{table.name}(#{item.keys.join(", ")}) values(#{format_values(name_type_map, item)});"
    end
    cursor.close
    buffer << nil
  end

  buffer << "commit;"
  buffer << nil

  buffer.join("\n")
ensure
  connection.logoff
end

#system_object? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/db_meta/oracle/types/table_data_collection.rb', line 55

def system_object?
  false
end