/usr/lib/ruby/vendor_ruby/sequel/adapters/mock.rb is in ruby-sequel 3.33.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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module Mock
# Connection class for Sequel's mock adapter.
class Connection
# Sequel::Mock::Database object that created this connection
attr_reader :db
# Shard this connection operates on, when using Sequel's
# sharding support (always :default for databases not using
# sharding).
attr_reader :server
# The specific database options for this connection.
attr_reader :opts
# Store the db, server, and opts.
def initialize(db, server, opts)
@db = db
@server = server
@opts = opts
end
# Delegate to the db's #_execute method.
def execute(sql)
@db.send(:_execute, self, sql)
end
end
# Database class for Sequel's mock adapter.
class Database < Sequel::Database
set_adapter_scheme :mock
# Map of database type names to module names, used for handling
# mock adapters for specific database types.
SHARED_ADAPTERS = {
'access'=>'Access',
'db2'=>'DB2',
'firebird'=>'Firebird',
'informix'=>'Informix',
'mssql'=>'MSSQL',
'mysql'=>'MySQL',
'oracle'=>'Oracle',
'postgres'=>'Postgres',
'sqlite'=>'SQLite'
}
# Set the autogenerated primary key integer
# to be returned when running an insert query.
# Argument types supported:
#
# nil :: Return nil for all inserts
# Integer :: Starting integer for next insert, with
# futher inserts getting an incremented
# value
# Array :: First insert gets the first value in the
# array, second gets the second value, etc.
# Proc :: Called with the insert SQL query, uses
# the value returned
# Class :: Should be an Exception subclass, will create a new
# instance an raise it wrapped in a DatabaseError.
attr_writer :autoid
# Set the columns to set in the dataset when the dataset fetches
# rows. Argument types supported:
# nil :: Set no columns
# Array of Symbols: Used for all datasets
# Array (otherwise): First retrieval gets the first value in the
# array, second gets the second value, etc.
# Proc :: Called with the select SQL query, uses the value
# returned, which should be an array of symbols
attr_writer :columns
# Set the hashes to yield by execute when retrieving rows.
# Argument types supported:
#
# nil :: Yield no rows
# Hash :: Always yield a single row with this hash
# Array of Hashes :: Yield separately for each hash in this array
# Array (otherwise) :: First retrieval gets the first value
# in the array, second gets the second value, etc.
# Proc :: Called with the select SQL query, uses
# the value returned, which should be a hash or
# array of hashes.
# Class :: Should be an Exception subclass, will create a new
# instance an raise it wrapped in a DatabaseError.
attr_writer :fetch
# Set the number of rows to return from update or delete.
# Argument types supported:
#
# nil :: Return 0 for all updates and deletes
# Integer :: Used for all updates and deletes
# Array :: First update/delete gets the first value in the
# array, second gets the second value, etc.
# Proc :: Called with the update/delete SQL query, uses
# the value returned.
# Class :: Should be an Exception subclass, will create a new
# instance an raise it wrapped in a DatabaseError.
attr_writer :numrows
# Additional options supported:
#
# :autoid :: Call #autoid= with the value
# :columns :: Call #columns= with the value
# :fetch :: Call #fetch= with the value
# :numrows :: Call #numrows= with the value
# :extend :: A module the object is extended with.
# :sqls :: The array to store the SQL queries in.
def initialize(opts={})
super
opts = @opts
if mod_name = SHARED_ADAPTERS[opts[:host]]
@shared_adapter = true
require "sequel/adapters/shared/#{opts[:host]}"
extend Sequel.const_get(mod_name)::DatabaseMethods
extend_datasets Sequel.const_get(mod_name)::DatasetMethods
end
self.autoid = opts[:autoid]
self.columns = opts[:columns]
self.fetch = opts[:fetch]
self.numrows = opts[:numrows]
extend(opts[:extend]) if opts[:extend]
@sqls = opts[:sqls] || []
end
# Return a related Connection option connecting to the given shard.
def connect(server)
Connection.new(self, server, server_opts(server))
end
# Store the sql used for later retrieval with #sqls, and return
# the appropriate value using either the #autoid, #fetch, or
# #numrows methods.
def execute(sql, opts={}, &block)
synchronize(opts[:server]){|c| _execute(c, sql, opts, &block)}
end
alias execute_ddl execute
# Store the sql used, and return the value of the #numrows method.
def execute_dui(sql, opts={})
execute(sql, opts.merge(:meth=>:numrows))
end
# Store the sql used, and return the value of the #autoid method.
def execute_insert(sql, opts={})
execute(sql, opts.merge(:meth=>:autoid))
end
# Return all stored SQL queries, and clear the cache
# of SQL queries.
def sqls
s = @sqls.dup
@sqls.clear
s
end
# Enable use of savepoints.
def supports_savepoints?
shared_adapter? ? super : true
end
private
def _autoid(sql, v, ds=nil)
case v
when Integer
if ds
ds.autoid += 1 if ds.autoid.is_a?(Integer)
else
@autoid += 1
end
v
else
_nextres(v, sql, nil)
end
end
def _execute(c, sql, opts={}, &block)
sql += " -- args: #{opts[:arguments].inspect}" if opts[:arguments]
sql += " -- #{@opts[:append]}" if @opts[:append]
sql += " -- #{c.server.is_a?(Symbol) ? c.server : c.server.inspect}" if c.server != :default
log_info(sql)
@sqls << sql
ds = opts[:dataset]
begin
if block
columns(ds, sql) if ds
_fetch(sql, ds._fetch || @fetch, &block)
elsif meth = opts[:meth]
if meth == :numrows
_numrows(sql, ds.numrows || @numrows)
else
v = ds.autoid
_autoid(sql, v || @autoid, (ds if v))
end
end
rescue => e
raise_error(e)
end
end
def _fetch(sql, f, &block)
case f
when Hash
yield f.dup
when Array
if f.all?{|h| h.is_a?(Hash)}
f.each{|h| yield h.dup}
else
_fetch(sql, f.shift, &block)
end
when Proc
h = f.call(sql)
if h.is_a?(Hash)
yield h.dup
elsif h
h.each{|h1| yield h1.dup}
end
when Class
if f < Exception
raise f
else
raise Error, "Invalid @autoid/@numrows attribute: #{v.inspect}"
end
when nil
# nothing
else
raise Error, "Invalid @fetch attribute: #{f.inspect}"
end
end
def _nextres(v, sql, default)
case v
when Integer
v
when Array
v.empty? ? default : _nextres(v.shift, sql, default)
when Proc
v.call(sql)
when Class
if v < Exception
raise v
else
raise Error, "Invalid @autoid/@numrows attribute: #{v.inspect}"
end
when nil
default
else
raise Error, "Invalid @autoid/@numrows attribute: #{v.inspect}"
end
end
def _numrows(sql, v)
_nextres(v, sql, 0)
end
def columns(ds, sql, cs=@columns)
case cs
when Array
unless cs.empty?
if cs.all?{|c| c.is_a?(Symbol)}
ds.columns(*cs)
else
columns(ds, sql, cs.shift)
end
end
when Proc
ds.columns(*cs.call(sql))
when nil
# nothing
else
raise Error, "Invalid @columns attribute: #{cs.inspect}"
end
end
def disconnect_connection(c)
end
def log_connection_execute(c, sql)
c.execute(sql)
end
def quote_identifiers_default
shared_adapter? ? super : false
end
def identifier_input_method_default
shared_adapter? ? super : nil
end
def identifier_output_method_default
shared_adapter? ? super : nil
end
def shared_adapter?
@shared_adapter
end
end
class Dataset < Sequel::Dataset
Database::DatasetClass = self
# Override the databases's autoid setting for this dataset
attr_accessor :autoid
# Override the databases's fetch setting for this dataset
attr_accessor :_fetch
# Override the databases's numrows setting for this dataset
attr_accessor :numrows
# If arguments are provided, use them to set the columns
# for this dataset and return self. Otherwise, use the
# default Sequel behavior and return the columns.
def columns(*cs)
if cs.empty?
super
else
@columns = cs
self
end
end
def fetch_rows(sql, &block)
execute(sql, &block)
end
private
def execute(sql, opts={}, &block)
super(sql, opts.merge(:dataset=>self), &block)
end
def execute_dui(sql, opts={}, &block)
super(sql, opts.merge(:dataset=>self), &block)
end
def execute_insert(sql, opts={}, &block)
super(sql, opts.merge(:dataset=>self), &block)
end
end
end
end
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