1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
|
require 'benchmark'
require 'date'
require 'active_record/connection_adapters/abstract/schema_definitions'
require 'active_record/connection_adapters/abstract/schema_statements'
require 'active_record/connection_adapters/abstract/database_statements'
require 'active_record/connection_adapters/abstract/quoting'
require 'active_record/connection_adapters/abstract/connection_specification'
module ActiveRecord
module ConnectionAdapters # :nodoc:
# All the concrete database adapters follow the interface laid down in this class.
# You can use this interface directly by borrowing the database connection from the Base with
# Base.connection.
#
# Most of the methods in the adapter are useful during migrations. Most
# notably, SchemaStatements#create_table, SchemaStatements#drop_table,
# SchemaStatements#add_index, SchemaStatements#remove_index,
# SchemaStatements#add_column, SchemaStatements#change_column and
# SchemaStatements#remove_column are very useful.
class AbstractAdapter
include Quoting, DatabaseStatements, SchemaStatements
@@row_even = true
def initialize(connection, logger = nil) #:nodoc:
@connection, @logger = connection, logger
@runtime = 0
end
# Returns the human-readable name of the adapter. Use mixed case - one
# can always use downcase if needed.
def adapter_name
'Abstract'
end
# Does this adapter support migrations ? Backend specific, as the
# abstract adapter always returns +false+.
def supports_migrations?
false
end
def reset_runtime #:nodoc:
rt = @runtime
@runtime = 0
return rt
end
protected
def log(sql, name)
begin
if block_given?
if @logger and @logger.level <= Logger::INFO
result = nil
seconds = Benchmark.realtime { result = yield }
@runtime += seconds
log_info(sql, name, seconds)
result
else
yield
end
else
log_info(sql, name, 0)
nil
end
rescue Exception => e
log_info("#{e.message}: #{sql}", name, 0)
raise ActiveRecord::StatementInvalid, "#{e.message}: #{sql}"
end
end
def log_info(sql, name, runtime)
return unless @logger
@logger.debug(
format_log_entry(
"#{name.nil? ? "SQL" : name} (#{sprintf("%f", runtime)})",
sql.gsub(/ +/, " ")
)
)
end
def format_log_entry(message, dump = nil)
if ActiveRecord::Base.colorize_logging
if @@row_even
@@row_even = false
message_color, dump_color = "4;36;1", "0;1"
else
@@row_even = true
message_color, dump_color = "4;35;1", "0"
end
log_entry = " \e[#{message_color}m#{message}\e[0m "
log_entry << "\e[#{dump_color}m%#{String === dump ? 's' : 'p'}\e[0m" % dump if dump
log_entry
else
"%s %s" % [message, dump]
end
end
end
end
end
|
