Class: CouchTap::Builders::Table

Inherits:
Object
  • Object
show all
Defined in:
lib/couch_tap/builders/table.rb

Overview

Deal with a table definition that will automatically insert a new row into the table.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, name, opts = {}, &block) ⇒ Table

Returns a new instance of Table.



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# File 'lib/couch_tap/builders/table.rb', line 15

def initialize(parent, name, opts = {}, &block)
  @_collections = []

  @parent = parent
  @data   = opts[:data] || parent.document
  @name   = name.to_sym

  @primary_keys = parent.primary_keys.dup
  unless opts[:primary_key] === false
    @primary_keys << (opts[:primary_key] || "#{@name.to_s.singularize}_id").to_sym
  end

  # Prepare the attributes
  @attributes = {}
  set_primary_keys
  set_attributes_from_data

  instance_eval(&block) if block_given?
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/couch_tap/builders/table.rb', line 12

def attributes
  @attributes
end

#data ⇒ Object (readonly)

Returns the value of attribute data.



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# File 'lib/couch_tap/builders/table.rb', line 13

def data
  @data
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/couch_tap/builders/table.rb', line 13

def name
  @name
end

#parent ⇒ Object (readonly)

Returns the value of attribute parent.



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# File 'lib/couch_tap/builders/table.rb', line 13

def parent
  @parent
end

#primary_keys ⇒ Object (readonly)

Returns the value of attribute primary_keys.



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# File 'lib/couch_tap/builders/table.rb', line 13

def primary_keys
  @primary_keys
end

Instance Method Details

#collection(field, opts = {}, &block) ⇒ Object 



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# File 'lib/couch_tap/builders/table.rb', line 76

def collection(field, opts = {}, &block)
  @_collections << Collection.new(self, field, opts, &block)
end

#column(*args) ⇒ Object

DSL Methods



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# File 'lib/couch_tap/builders/table.rb', line 64

def column(*args)
  column = args.first
  field  = args.last
  if block_given?
    set_attribute(column, yield)
  elsif field.is_a?(Symbol)
    set_attribute(column, data[field.to_s])
  elsif args.length > 1
    set_attribute(column, field)
  end
end

#database ⇒ Object 



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# File 'lib/couch_tap/builders/table.rb', line 48

def database
  @database ||= handler.database
end

#document ⇒ Object Also known as: doc 



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# File 'lib/couch_tap/builders/table.rb', line 43

def document
  parent.document
end

#execute ⇒ Object

Support Methods



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# File 'lib/couch_tap/builders/table.rb', line 82

def execute
  # Insert the record and prepare ID for sub-tables
  id = dataset.insert(attributes)
  set_attribute(primary_keys.last, id) unless id.blank?

  # Now go through each collection entry
  if @_collections.length > 0
    @_collections.each do |collection|
      collection.execute
    end
  end
end

#handler ⇒ Object 



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# File 'lib/couch_tap/builders/table.rb', line 35

def handler
  parent.handler
end

#id ⇒ Object 



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# File 'lib/couch_tap/builders/table.rb', line 39

def id
  handler.id
end

#key_filter ⇒ Object

Grab the latest set of values to filter with. This is only relevant in sub-tables.



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# File 'lib/couch_tap/builders/table.rb', line 54

def key_filter
  hash = {}
  primary_keys.each do |k|
    hash[k] = attributes[k]
  end
  hash
end