class Arel::Visitors::ToSql

Public Class Methods

new(connection) click to toggle source
Calls superclass method Arel::Visitors::Visitor.new
# File lib/arel/visitors/to_sql.rb, line 61
def initialize connection
  super()
  @connection     = connection
end

Public Instance Methods

compile(node, &block) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 66
def compile node, &block
  accept(node, Arel::Collectors::SQLString.new, &block).value
end

Private Instance Methods

aggregate(name, o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 807
def aggregate name, o, collector
  collector << "#{name}("
  if o.distinct
    collector << "DISTINCT "
  end
  collector = inject_join(o.expressions, collector, ", ") << ")"
  if o.alias
    collector << " AS "
    visit o.alias, collector
  else
    collector
  end
end
build_subselect(key, o) click to toggle source

FIXME: we should probably have a 2-pass visitor for this

# File lib/arel/visitors/to_sql.rb, line 88
def build_subselect key, o
  stmt             = Nodes::SelectStatement.new
  core             = stmt.cores.first
  core.froms       = o.relation
  core.wheres      = o.wheres
  core.projections = [key]
  stmt.limit       = o.limit
  stmt.orders      = o.orders
  stmt
end
column_cache(table) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 180
def column_cache(table)
  schema_cache.columns_hash(table)
end
column_for(attr) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 170
def column_for attr
  return unless attr
  name    = attr.name.to_s
  table   = attr.relation.table_name

  return nil unless table_exists? table

  column_cache(table)[name]
end
infix_value(o, collector, value) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 801
def infix_value o, collector, value
  collector = visit o.left, collector
  collector << value
  visit o.right, collector
end
inject_join(list, collector, join_str) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 790
def inject_join list, collector, join_str
  len = list.length - 1
  list.each_with_index.inject(collector) { |c, (x,i)|
    if i == len
      visit x, c
    else
      visit(x, c) << join_str
    end
  }
end
literal(o, collector;) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 720
def literal o, collector; collector << o.to_s; end
maybe_visit(thing, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 784
def maybe_visit thing, collector
  return collector unless thing
  collector << " "
  visit thing, collector
end
quote(value, column = nil) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 769
def quote value, column = nil
  return value if Arel::Nodes::SqlLiteral === value
  @connection.quote value, column
end
quote_column_name(name) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 779
def quote_column_name name
  return name if Arel::Nodes::SqlLiteral === name
  @connection.quote_column_name(name)
end
quote_table_name(name) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 774
def quote_table_name name
  return name if Arel::Nodes::SqlLiteral === name
  @connection.quote_table_name(name)
end
quoted(o, a) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 730
def quoted o, a
  quote(o, column_for(a))
end
schema_cache() click to toggle source
# File lib/arel/visitors/to_sql.rb, line 72
def schema_cache
  @connection.schema_cache
end
table_exists?(name) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 166
def table_exists? name
  schema_cache.table_exists? name
end
unsupported(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 734
def unsupported o, collector
  raise "unsupported: #{o.class.name}"
end
visit_ActiveSupport_Multibyte_Chars(o, collector)
Alias for: unsupported
visit_ActiveSupport_StringInquirer(o, collector)
Alias for: unsupported
visit_Arel_Attributes_Attribute(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 709
def visit_Arel_Attributes_Attribute o, collector
  join_name = o.relation.table_alias || o.relation.name
  collector << "#{quote_table_name join_name}.#{quote_column_name o.name}"
end
visit_Arel_Attributes_Boolean(o, collector)
visit_Arel_Attributes_Decimal(o, collector)
visit_Arel_Attributes_Float(o, collector)
visit_Arel_Attributes_Integer(o, collector)
visit_Arel_Attributes_String(o, collector)
visit_Arel_Attributes_Time(o, collector)
visit_Arel_Nodes_Addition(o, collector)
visit_Arel_Nodes_And(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 649
def visit_Arel_Nodes_And o, collector
  inject_join o.children, collector, " AND "
end
visit_Arel_Nodes_As(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 698
def visit_Arel_Nodes_As o, collector
  collector = visit o.left, collector
  collector << " AS "
  visit o.right, collector
end
visit_Arel_Nodes_Ascending(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 445
def visit_Arel_Nodes_Ascending o, collector
  visit(o.expr, collector) << " ASC"
end
visit_Arel_Nodes_Assignment(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 659
def visit_Arel_Nodes_Assignment o, collector
  case o.right
  when Arel::Nodes::UnqualifiedColumn, Arel::Attributes::Attribute, Arel::Nodes::BindParam
    collector = visit o.left, collector
    collector << " = "
    visit o.right, collector
  else
    collector = visit o.left, collector
    collector << " = "
    collector << quote(o.right, column_for(o.left)).to_s
  end
end
visit_Arel_Nodes_Avg(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 491
def visit_Arel_Nodes_Avg o, collector
  aggregate "AVG", o, collector
end
visit_Arel_Nodes_Between(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 501
def visit_Arel_Nodes_Between o, collector
  collector = visit o.left, collector
  collector << " BETWEEN "
  visit o.right, collector
end
visit_Arel_Nodes_Bin(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 283
def visit_Arel_Nodes_Bin o, collector
  visit o.expr, collector
end
visit_Arel_Nodes_BindParam(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 722
def visit_Arel_Nodes_BindParam o, collector
  collector.add_bind(o) { "?" }
end
visit_Arel_Nodes_Casted(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 150
def visit_Arel_Nodes_Casted o, collector
  collector << quoted(o.val, o.attribute).to_s
end
visit_Arel_Nodes_Count(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 475
def visit_Arel_Nodes_Count o, collector
  aggregate "COUNT", o, collector
end
visit_Arel_Nodes_CurrentRow(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 391
def visit_Arel_Nodes_CurrentRow o, collector
  collector << "CURRENT ROW"
end
visit_Arel_Nodes_DeleteStatement(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 76
def visit_Arel_Nodes_DeleteStatement o, collector
  collector << "DELETE FROM "
  collector = visit o.relation, collector
  if o.wheres.any?
    collector << " WHERE "
    inject_join o.wheres, collector, AND
  else
    collector
  end
end
visit_Arel_Nodes_Descending(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 449
def visit_Arel_Nodes_Descending o, collector
  visit(o.expr, collector) << " DESC"
end
visit_Arel_Nodes_Distinct(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 287
def visit_Arel_Nodes_Distinct o, collector
  collector << DISTINCT
end
visit_Arel_Nodes_DistinctOn(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 291
def visit_Arel_Nodes_DistinctOn o, collector
  raise NotImplementedError, 'DISTINCT ON not implemented for this db'
end
visit_Arel_Nodes_Division(o, collector)
visit_Arel_Nodes_DoesNotMatch(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 543
def visit_Arel_Nodes_DoesNotMatch o, collector
  collector = visit o.left, collector
  collector << " NOT LIKE "
  collector = visit o.right, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end
visit_Arel_Nodes_Equality(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 672
def visit_Arel_Nodes_Equality o, collector
  right = o.right

  collector = visit o.left, collector

  if right.nil?
    collector << " IS NULL"
  else
    collector << " = "
    visit right, collector
  end
end
visit_Arel_Nodes_Except(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 320
def visit_Arel_Nodes_Except o, collector
  collector << "( "
  infix_value(o, collector, " EXCEPT ") << " )"
end
visit_Arel_Nodes_Exists(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 139
def visit_Arel_Nodes_Exists o, collector
  collector << "EXISTS ("
  collector = visit(o.expressions, collector) << ")"
  if o.alias
    collector << " AS "
    visit o.alias, collector
  else
    collector
  end
end
visit_Arel_Nodes_Extract(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 470
def visit_Arel_Nodes_Extract o, collector
  collector << "EXTRACT(#{o.field.to_s.upcase} FROM "
  visit(o.expr, collector) << ")"
end
visit_Arel_Nodes_False(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 162
def visit_Arel_Nodes_False o, collector
  collector << "FALSE"
end
visit_Arel_Nodes_Following(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 381
def visit_Arel_Nodes_Following o, collector
  collector = if o.expr
                visit o.expr, collector
              else
                collector << "UNBOUNDED"
              end

  collector << " FOLLOWING"
end
visit_Arel_Nodes_FullOuterJoin(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 578
def visit_Arel_Nodes_FullOuterJoin o, collector
  collector << "FULL OUTER JOIN "
  collector = visit o.left, collector
  collector << SPACE
  visit o.right, collector
end
visit_Arel_Nodes_GreaterThan(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 513
def visit_Arel_Nodes_GreaterThan o, collector
  collector = visit o.left, collector
  collector << " > "
  visit o.right, collector
end
visit_Arel_Nodes_GreaterThanOrEqual(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 507
def visit_Arel_Nodes_GreaterThanOrEqual o, collector
  collector = visit o.left, collector
  collector << " >= "
  visit o.right, collector
end
visit_Arel_Nodes_Group(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 453
def visit_Arel_Nodes_Group o, collector
  visit o.expr, collector
end
visit_Arel_Nodes_Grouping(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 432
def visit_Arel_Nodes_Grouping o, collector
  if o.expr.is_a? Nodes::Grouping
    visit(o.expr, collector)
  else
    collector << "("
    visit(o.expr, collector) << ")"
  end
end
visit_Arel_Nodes_Having(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 408
def visit_Arel_Nodes_Having o, collector
  collector << "HAVING "
  visit o.expr, collector
end
visit_Arel_Nodes_In(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 628
def visit_Arel_Nodes_In o, collector
  if Array === o.right && o.right.empty?
    collector << '1=0'
  else
    collector = visit o.left, collector
    collector << " IN ("
    visit(o.right, collector) << ")"
  end
end
visit_Arel_Nodes_InfixOperation(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 753
def visit_Arel_Nodes_InfixOperation o, collector
  collector = visit o.left, collector
  collector << " #{o.operator} "
  visit o.right, collector
end
visit_Arel_Nodes_InnerJoin(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 599
def visit_Arel_Nodes_InnerJoin o, collector
  collector << "INNER JOIN "
  collector = visit o.left, collector
  if o.right
    collector << SPACE
    visit(o.right, collector)
  else
    collector
  end
end
visit_Arel_Nodes_InsertStatement(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 121
def visit_Arel_Nodes_InsertStatement o, collector
  collector << "INSERT INTO "
  collector = visit o.relation, collector
  if o.columns.any?
    collector << " (#{o.columns.map { |x|
      quote_column_name x.name
    }.join ', '})"
  end

  if o.values
    maybe_visit o.values, collector
  elsif o.select
    maybe_visit o.select, collector
  else
    collector
  end
end
visit_Arel_Nodes_Intersect(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 315
def visit_Arel_Nodes_Intersect o, collector
  collector << "( "
  infix_value(o, collector, " INTERSECT ") << " )"
end
visit_Arel_Nodes_JoinSource(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 555
def visit_Arel_Nodes_JoinSource o, collector
  if o.left
    collector = visit o.left, collector
  end
  if o.right.any?
    collector << " " if o.left
    collector = inject_join o.right, collector, ' '
  end
  collector
end
visit_Arel_Nodes_LessThan(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 525
def visit_Arel_Nodes_LessThan o, collector
  collector = visit o.left, collector
  collector << " < "
  visit o.right, collector
end
visit_Arel_Nodes_LessThanOrEqual(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 519
def visit_Arel_Nodes_LessThanOrEqual o, collector
  collector = visit o.left, collector
  collector << " <= "
  visit o.right, collector
end
visit_Arel_Nodes_Limit(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 418
def visit_Arel_Nodes_Limit o, collector
  collector << "LIMIT "
  visit o.expr, collector
end
visit_Arel_Nodes_Lock(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 428
def visit_Arel_Nodes_Lock o, collector
  visit o.expr, collector
end
visit_Arel_Nodes_Matches(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 531
def visit_Arel_Nodes_Matches o, collector
  collector = visit o.left, collector
  collector << " LIKE "
  collector = visit o.right, collector
  if o.escape
    collector << ' ESCAPE '
    visit o.escape, collector
  else
    collector
  end
end
visit_Arel_Nodes_Max(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 483
def visit_Arel_Nodes_Max o, collector
  aggregate "MAX", o, collector
end
visit_Arel_Nodes_Min(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 487
def visit_Arel_Nodes_Min o, collector
  aggregate "MIN", o, collector
end
visit_Arel_Nodes_Multiplication(o, collector)
visit_Arel_Nodes_NamedFunction(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 457
def visit_Arel_Nodes_NamedFunction o, collector
  collector << o.name
  collector << "("
  collector << "DISTINCT " if o.distinct
  collector = inject_join(o.expressions, collector, ", ") << ")"
  if o.alias
    collector << " AS "
    visit o.alias, collector
  else
    collector
  end
end
visit_Arel_Nodes_NamedWindow(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 325
def visit_Arel_Nodes_NamedWindow o, collector
  collector << quote_column_name(o.name)
  collector << " AS "
  visit_Arel_Nodes_Window o, collector
end
visit_Arel_Nodes_Not(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 615
def visit_Arel_Nodes_Not o, collector
  collector << "NOT ("
  visit(o.expr, collector) << ")"
end
visit_Arel_Nodes_NotEqual(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 685
def visit_Arel_Nodes_NotEqual o, collector
  right = o.right

  collector = visit o.left, collector

  if right.nil?
    collector << " IS NOT NULL"
  else
    collector << " != "
    visit right, collector
  end
end
visit_Arel_Nodes_NotIn(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 638
def visit_Arel_Nodes_NotIn o, collector
  if Array === o.right && o.right.empty?
    collector << '1=1'
  else
    collector = visit o.left, collector
    collector << " NOT IN ("
    collector = visit o.right, collector
    collector << ")"
  end
end
visit_Arel_Nodes_NotRegexp(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 570
def visit_Arel_Nodes_NotRegexp o, collector
  raise NotImplementedError, '!~ not implemented for this db'
end
visit_Arel_Nodes_Offset(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 413
def visit_Arel_Nodes_Offset o, collector
  collector << "OFFSET "
  visit o.expr, collector
end
visit_Arel_Nodes_On(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 610
def visit_Arel_Nodes_On o, collector
  collector << "ON "
  visit o.expr, collector
end
visit_Arel_Nodes_Or(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 653
def visit_Arel_Nodes_Or o, collector
  collector = visit o.left, collector
  collector << " OR "
  visit o.right, collector
end
visit_Arel_Nodes_OuterJoin(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 585
def visit_Arel_Nodes_OuterJoin o, collector
  collector << "LEFT OUTER JOIN "
  collector = visit o.left, collector
  collector << " "
  visit o.right, collector
end
visit_Arel_Nodes_Over(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 395
def visit_Arel_Nodes_Over o, collector
  case o.right
  when nil
    visit(o.left, collector) << " OVER ()"
  when Arel::Nodes::SqlLiteral
    infix_value o, collector, " OVER "
  when String, Symbol
    visit(o.left, collector) << " OVER #{quote_column_name o.right.to_s}"
  else
    infix_value o, collector, " OVER "
  end
end
visit_Arel_Nodes_Preceding(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 371
def visit_Arel_Nodes_Preceding o, collector
  collector = if o.expr
                visit o.expr, collector
              else
                collector << "UNBOUNDED"
              end

  collector << " PRECEDING"
end
visit_Arel_Nodes_Quoted(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 154
def visit_Arel_Nodes_Quoted o, collector
  collector << quoted(o.expr, nil).to_s
end
visit_Arel_Nodes_Range(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 362
def visit_Arel_Nodes_Range o, collector
  if o.expr
    collector << "RANGE "
    visit o.expr, collector
  else
    collector << "RANGE"
  end
end
visit_Arel_Nodes_Regexp(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 566
def visit_Arel_Nodes_Regexp o, collector
  raise NotImplementedError, '~ not implemented for this db'
end
visit_Arel_Nodes_RightOuterJoin(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 592
def visit_Arel_Nodes_RightOuterJoin o, collector
  collector << "RIGHT OUTER JOIN "
  collector = visit o.left, collector
  collector << SPACE
  visit o.right, collector
end
visit_Arel_Nodes_Rows(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 353
def visit_Arel_Nodes_Rows o, collector
  if o.expr
    collector << "ROWS "
    visit o.expr, collector
  else
    collector << "ROWS"
  end
end
visit_Arel_Nodes_SelectCore(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 230
def visit_Arel_Nodes_SelectCore o, collector
  collector << "SELECT"

  collector = maybe_visit o.top, collector

  collector = maybe_visit o.set_quantifier, collector

  unless o.projections.empty?
    collector << SPACE
    len = o.projections.length - 1
    o.projections.each_with_index do |x, i|
      collector = visit(x, collector)
      collector << COMMA unless len == i
    end
  end

  if o.source && !o.source.empty?
    collector << " FROM "
    collector = visit o.source, collector
  end

  unless o.wheres.empty?
    collector << WHERE
    len = o.wheres.length - 1
    o.wheres.each_with_index do |x, i|
      collector = visit(x, collector)
      collector << AND unless len == i
    end
  end

  unless o.groups.empty?
    collector << GROUP_BY
    len = o.groups.length - 1
    o.groups.each_with_index do |x, i|
      collector = visit(x, collector)
      collector << COMMA unless len == i
    end
  end

  collector = maybe_visit o.having, collector

  unless o.windows.empty?
    collector << WINDOW
    len = o.windows.length - 1
    o.windows.each_with_index do |x, i|
      collector = visit(x, collector)
      collector << COMMA unless len == i
    end
  end

  collector
end
visit_Arel_Nodes_SelectStatement(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 203
def visit_Arel_Nodes_SelectStatement o, collector
  if o.with
    collector = visit o.with, collector
    collector << SPACE
  end

  collector = o.cores.inject(collector) { |c,x|
    visit_Arel_Nodes_SelectCore(x, c)
  }

  unless o.orders.empty?
    collector << SPACE
    collector << ORDER_BY
    len = o.orders.length - 1
    o.orders.each_with_index { |x, i|
      collector = visit(x, collector)
      collector << COMMA unless len == i
    }
  end

  collector = maybe_visit o.limit, collector
  collector = maybe_visit o.offset, collector
  collector = maybe_visit o.lock, collector

  collector
end
visit_Arel_Nodes_SqlLiteral(o, collector;)
Alias for: literal
visit_Arel_Nodes_StringJoin(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 574
def visit_Arel_Nodes_StringJoin o, collector
  visit o.left, collector
end
visit_Arel_Nodes_Subtraction(o, collector)
visit_Arel_Nodes_Sum(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 479
def visit_Arel_Nodes_Sum o, collector
  aggregate "SUM", o, collector
end
visit_Arel_Nodes_TableAlias(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 495
def visit_Arel_Nodes_TableAlias o, collector
  collector = visit o.relation, collector
  collector << " "
  collector << quote_table_name(o.name)
end
visit_Arel_Nodes_Top(o, collector) click to toggle source

FIXME: this does nothing on most databases, but does on MSSQL

# File lib/arel/visitors/to_sql.rb, line 424
def visit_Arel_Nodes_Top o, collector
  collector
end
visit_Arel_Nodes_True(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 158
def visit_Arel_Nodes_True o, collector
  collector << "TRUE"
end
visit_Arel_Nodes_Union(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 305
def visit_Arel_Nodes_Union o, collector
  collector << "( "
  infix_value(o, collector, " UNION ") << " )"
end
visit_Arel_Nodes_UnionAll(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 310
def visit_Arel_Nodes_UnionAll o, collector
  collector << "( "
  infix_value(o, collector, " UNION ALL ") << " )"
end
visit_Arel_Nodes_UnqualifiedColumn(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 704
def visit_Arel_Nodes_UnqualifiedColumn o, collector
  collector << "#{quote_column_name o.name}"
  collector
end
visit_Arel_Nodes_UpdateStatement(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 99
def visit_Arel_Nodes_UpdateStatement o, collector
  if o.orders.empty? && o.limit.nil?
    wheres = o.wheres
  else
    wheres = [Nodes::In.new(o.key, [build_subselect(o.key, o)])]
  end

  collector << "UPDATE "
  collector = visit o.relation, collector
  unless o.values.empty?
    collector << " SET "
    collector = inject_join o.values, collector, ", "
  end

  unless wheres.empty?
    collector << " WHERE "
    collector = inject_join wheres, collector, " AND "
  end

  collector
end
visit_Arel_Nodes_Values(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 184
def visit_Arel_Nodes_Values o, collector
  collector << "VALUES ("

  len = o.expressions.length - 1
  o.expressions.zip(o.columns).each_with_index { |(value, attr), i|
    case value
    when Nodes::SqlLiteral, Nodes::BindParam
      collector = visit value, collector
    else
      collector << quote(value, attr && column_for(attr)).to_s
    end
    unless i == len
      collector << ', '
    end
  }

  collector << ")"
end
visit_Arel_Nodes_Window(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 331
def visit_Arel_Nodes_Window o, collector
  collector << "("

  if o.partitions.any?
    collector << "PARTITION BY "
    collector = inject_join o.partitions, collector, ", "
  end

  if o.orders.any?
    collector << ' ' if o.partitions.any?
    collector << "ORDER BY "
    collector = inject_join o.orders, collector, ", "
  end

  if o.framing
    collector << ' ' if o.partitions.any? or o.orders.any?
    collector = visit o.framing, collector
  end

  collector << ")"
end
visit_Arel_Nodes_With(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 295
def visit_Arel_Nodes_With o, collector
  collector << "WITH "
  inject_join o.children, collector, ', '
end
visit_Arel_Nodes_WithRecursive(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 300
def visit_Arel_Nodes_WithRecursive o, collector
  collector << "WITH RECURSIVE "
  inject_join o.children, collector, ', '
end
visit_Arel_SelectManager(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 441
def visit_Arel_SelectManager o, collector
  collector << "(#{o.to_sql.rstrip})"
end
visit_Arel_Table(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 620
def visit_Arel_Table o, collector
  if o.table_alias
    collector << "#{quote_table_name o.name} #{quote_table_name o.table_alias}"
  else
    collector << quote_table_name(o.name)
  end
end
visit_Array(o, collector) click to toggle source
# File lib/arel/visitors/to_sql.rb, line 764
def visit_Array o, collector
  inject_join o, collector, ", "
end
Also aliased as: visit_Set
visit_BigDecimal(o, collector)
Alias for: unsupported
visit_Bignum(o, collector;)
Alias for: literal
visit_Class(o, collector)
Alias for: unsupported
visit_Date(o, collector)
Alias for: unsupported
visit_DateTime(o, collector)
Alias for: unsupported
visit_FalseClass(o, collector)
Alias for: unsupported
visit_Fixnum(o, collector;)
Alias for: literal
visit_Float(o, collector)
Alias for: unsupported
visit_Hash(o, collector)
Alias for: unsupported
visit_NilClass(o, collector)
Alias for: unsupported
visit_Set(o, collector)
Alias for: visit_Array
visit_String(o, collector)
Alias for: unsupported
visit_Symbol(o, collector)
Alias for: unsupported
visit_Time(o, collector)
Alias for: unsupported
visit_TrueClass(o, collector)
Alias for: unsupported