# File lib/active_ldap/attributes.rb, line 12
12:       def attr_protected(*attributes)
13:         targets = attributes.collect {|attr| attr.to_s} - protected_attributes
14:         instance_variable_set("@attr_protected", targets)
15:       end

    # File lib/active_ldap/attributes.rb, line 23
23:       def blank_value?(value)
24:         case value
25:         when Hash
26:           value.values.all? {|val| blank_value?(val)}
27:         when Array
28:           value.all? {|val| blank_value?(val)}
29:         when String
30:           /\A\s*\z/ =~ value
31:         when nil
32:           true
33:         else
34:           value.blank?
35:         end
36:       end

    # File lib/active_ldap/attributes.rb, line 17
17:       def protected_attributes
18:         ancestors[0..(ancestors.index(Base))].inject([]) do |result, ancestor|
19:           result + ancestor.instance_eval {@attr_protected ||= []}
20:         end
21:       end

    # File lib/active_ldap/attributes.rb, line 38
38:       def remove_blank_value(value)
39:         case value
40:         when Hash
41:           result = {}
42:           value.each do |k, v|
43:             v = remove_blank_value(v)
44:             next if v.nil?
45:             result[k] = v
46:           end
47:           result = nil if result.blank?
48:           result
49:         when Array
50:           result = []
51:           value.each do |v|
52:             v = remove_blank_value(v)
53:             next if v.nil?
54:             result << v
55:           end
56:           result = nil if result.blank?
57:           result
58:         when String
59:           if /\A\s*\z/ =~ value
60:             nil
61:           else
62:             value
63:           end
64:         else
65:           value
66:         end
67:       end