Class: Cassanity::ArgumentGenerators::ColumnFamilySelect

Inherits:
Object
  • Object
show all
Defined in:
lib/cassanity/argument_generators/column_family_select.rb

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ ColumnFamilySelect

Internal



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# File 'lib/cassanity/argument_generators/column_family_select.rb', line 11

def initialize(args = {})
  @using_clause = args.fetch(:using_clause) { UsingClause.new }
  @where_clause = args.fetch(:where_clause) { WhereClause.new }
  @order_clause = args.fetch(:order_clause) { OrderClause.new }
  @limit_clause = args.fetch(:limit_clause) { LimitClause.new }
end

Instance Method Details

#call(args = {}) ⇒ Object

Internal



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# File 'lib/cassanity/argument_generators/column_family_select.rb', line 19

def call(args = {})
  select = Array(args.fetch(:select, '*'))
  name   = args.fetch(:column_family_name)
  where  = args[:where]
  using  = args[:using]
  order  = args[:order]
  limit  = args[:limit]

  variables = []

  if (keyspace_name = args[:keyspace_name])
    name = "#{keyspace_name}.#{name}"
  end

  cql = "SELECT #{select.join(', ')} FROM #{name}"

  using_cql, *using_variables = @using_clause.call(using: using)
  cql << using_cql
  variables.concat(using_variables)

  where_cql, *where_variables = @where_clause.call(where: where)
  cql << where_cql
  variables.concat(where_variables)

  order_cql, *order_variables = @order_clause.call(order: order)
  cql << order_cql
  variables.concat(order_variables)

  limit_cql, *limit_variables = @limit_clause.call(limit: limit)
  cql << limit_cql
  variables.concat(limit_variables)

  [cql, *variables]
end