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Versions: 16
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Contents
class Baza::Driver::Mysql::Index < Baza::Index
attr_reader :args, :columns
attr_accessor :table_name
def initialize(args)
@db = args.fetch(:db)
@data = args.fetch(:data)
@table_name = args.fetch(:table_name)
@columns = []
end
# Used to validate in Wref::Map.
def __object_unique_id__
name
end
def name
@data.fetch(:Key_name)
end
def table
@db.tables[@table_name]
end
def drop
sql = "DROP INDEX `#{name}` ON `#{@table_name}`"
begin
@db.query(sql)
rescue => e
# The index has already been dropped - ignore.
raise e if e.message.index("check that column/key exists") == nil
end
self
end
def rename(newname)
newname = newname.to_s
create_args = data
create_args[:name] = newname
drop
table.create_indexes([create_args])
@data[:Key_name] = newname
self
end
def data
{
name: name,
columns: @columns
}
end
# Returns true if the index is a unique-index.
def unique?
if @data.fetch(:Index_type) == "UNIQUE" || @data.fetch(:Non_unique).to_i == 0
return true
else
return false
end
end
# Returns true if the index is a primary-index.
def primary?
return true if @data.fetch(:Key_name) == "PRIMARY"
false
end
def reload
data = @db.query("SHOW INDEX FROM `#{@db.escape_table(@table_name)}` WHERE `Key_name` = '#{@db.esc(name)}'").fetch
raise Baza::Errors::IndexNotFound unless data
@data = data
self
end
end
Version data entries
16 entries across 16 versions & 1 rubygems