Class: Theman::Agency::Columns

Inherits:
Object
  • Object
show all
Defined in:
lib/theman/agency/columns.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(conn) ⇒ Columns

Returns a new instance of Columns.



7
8
9
10
 
# File 'lib/theman/agency/columns.rb', line 7

def initialize(conn)
  @connection = conn
  @columns    = []
end

Instance Attribute Details

#column(name, type, *args) ⇒ Object

:nodoc



28
29
30
 
# File 'lib/theman/agency/columns.rb', line 28

def column
  @column
end

#connection ⇒ Object (readonly)

Returns the value of attribute connection.



5
6
7
 
# File 'lib/theman/agency/columns.rb', line 5

def connection
  @connection
end

Instance Method Details

#column_to_sql(name, type, options = {}) ⇒ Object

:nodoc



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
 
# File 'lib/theman/agency/columns.rb', line 43

def column_to_sql(name, type, options = {}) #:nodoc
  sql = [quote_column_name(name)]
  case type
  when 'integer'
    if options[:limit]
      case options[:limit]
      when 1, 2;
        sql << 'smallint'
      when 3, 4;
        sql << 'integer'
      when 5..8;
        sql << 'bigint'
      else
        raise ArgumentError, "No integer type has byte size #{limit}."
      end
    else
      sql << 'integer'
    end
  when 'decimal'
    sql << 'double precision'
  when 'float'
    sql << 'double precision'
  when 'string'
    if options[:limit]
      sql << "character varying(#{options[:limit]})"
    else
      sql << 'character varying(255)'
    end
  when 'binary'
    sql << 'oid'
  when 'time'
    sql << 'time without time zone'
  when 'datetime'
    sql << 'timestamp without time zone'
  when 'timestamp'
    sql << 'timestamp without time zone'
  else
    sql << type
  end

  if options[:null] ==  false
    sql << 'NOT NULL'
  end

  if options[:default]
    sql << "DEFAULT #{options[:default]}"
  end

  sql.join(' ')
end

#include?(sym_col) ⇒ Boolean

Returns:

  • (Boolean) 


39
40
41
 
# File 'lib/theman/agency/columns.rb', line 39

def include?(sym_col)
  @columns.map{|column| column[0] }.include?(sym_col)
end

#quote_column_name(name) ⇒ Object

:nodoc



94
95
96
 
# File 'lib/theman/agency/columns.rb', line 94

def quote_column_name(name) #:nodoc
  @connection.quote_ident(name.to_s)
end

#symbolize(name) ⇒ Object

:nodoc



24
25
26
 
# File 'lib/theman/agency/columns.rb', line 24

def symbolize(name) #:nodoc
  name.is_a?(Symbol) ? name : name.gsub(/ /,"_").gsub(/\W/, "").downcase.to_sym
end

#to_sql ⇒ Object

:nodoc



12
13
14
 
# File 'lib/theman/agency/columns.rb', line 12

def to_sql #:nodoc
  @columns.map{|column| column_to_sql(*column)}.join(', ')
end