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# frozen_string_literal: true
module Arel # :nodoc: all
class UpdateManager < Arel::TreeManager
include TreeManager::StatementMethods
def initialize(table = nil)
@ast = Nodes::UpdateStatement.new(table)
end
###
# UPDATE +table+
def table(table)
@ast.relation = table
self
end
def set(values)
case values
when String, Nodes::BoundSqlLiteral
@ast.values = [values]
else
@ast.values = values.map { |column, value|
Nodes::Assignment.new(
Nodes::UnqualifiedColumn.new(column),
value
)
}
end
self
end
def group(columns)
columns.each do |column|
column = Nodes::SqlLiteral.new(column) if String === column
column = Nodes::SqlLiteral.new(column.to_s) if Symbol === column
@ast.groups.push Nodes::Group.new column
end
self
end
def having(expr)
@ast.havings << expr
self
end
end
end
|
