# 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:             result[k] = remove_blank_value(v) || []
44:           end
45:           result
46:         when Array
47:           result = []
48:           value.each do |v|
49:             v = remove_blank_value(v)
50:             next if v.nil?
51:             result << v
52:           end
53:           result
54:         when String
55:           if /\A\s*\z/ =~ value
56:             nil
57:           else
58:             value
59:           end
60:         else
61:           value
62:         end
63:       end