Class: ActiveRecordSpannerAdapter::Index

Inherits:
Object
  • Object
show all
Defined in:
lib/activerecord_spanner_adapter/index.rb,
lib/activerecord_spanner_adapter/index/column.rb

Defined Under Namespace

Classes: Column

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(table, name, columns, type: nil, unique: false, null_filtered: false, interleave_in: nil, storing: nil, state: nil) ⇒ Index

Returns a new instance of Index.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 14

def initialize \
    table,
    name,
    columns,
    type: nil,
    unique: false,
    null_filtered: false,
    interleave_in: nil,
    storing: nil,
    state: nil
  @table = table.to_s
  @name = name.to_s
  @columns = Array(columns)
  @type = type
  @unique = unique
  @null_filtered = null_filtered
  @interleave_in = interleave_in unless interleave_in.to_s.empty?
  @storing = storing || []
  @state = state
end

Instance Attribute Details

#columns ⇒ Object

Returns the value of attribute columns.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def columns
  @columns
end

#interleave_in ⇒ Object

Returns the value of attribute interleave_in.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def interleave_in
  @interleave_in
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def name
  @name
end

#null_filtered ⇒ Object

Returns the value of attribute null_filtered.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def null_filtered
  @null_filtered
end

#state ⇒ Object

Returns the value of attribute state.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def state
  @state
end

#storing ⇒ Object

Returns the value of attribute storing.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def storing
  @storing
end

#table ⇒ Object

Returns the value of attribute table.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def table
  @table
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def type
  @type
end

#unique ⇒ Object

Returns the value of attribute unique.



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# File 'lib/activerecord_spanner_adapter/index.rb', line 11

def unique
  @unique
end

Instance Method Details

#column_names ⇒ Object 



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# File 'lib/activerecord_spanner_adapter/index.rb', line 45

def column_names
  columns_by_position.map(&:name)
end

#columns_by_position ⇒ Object 



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# File 'lib/activerecord_spanner_adapter/index.rb', line 39

def columns_by_position
  @columns.select(&:ordinal_position).sort do |c1, c2|
    c1.ordinal_position <=> c2.ordinal_position
  end
end

#options ⇒ Object 



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# File 'lib/activerecord_spanner_adapter/index.rb', line 55

def options
  {
    name: name,
    order: orders,
    unique: unique,
    interleave_in: interleave_in,
    null_filtered: null_filtered,
    storing: storing
  }.delete_if { |_, v| v.nil? }
end

#orders ⇒ Object 



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# File 'lib/activerecord_spanner_adapter/index.rb', line 49

def orders
  columns_by_position.each_with_object({}) do |c, r|
    r[c.name] = c.desc? ? :desc : :asc
  end
end

#primary? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/activerecord_spanner_adapter/index.rb', line 35

def primary?
  @type == "PRIMARY_KEY"
end

#rename_column_options(old_column, new_column) ⇒ Object 



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# File 'lib/activerecord_spanner_adapter/index.rb', line 66

def rename_column_options old_column, new_column
  opts = options

  opts[:order].transform_keys do |key|
    key.to_s == new_column.to_s
  end

  columns = column_names.map do |c|
    c.to_s == old_column.to_s ? new_column : c
  end

  { options: opts, columns: columns }
end