Module: HappyMapper::ClassMethods

Defined in:
lib/happymapper.rb

Instance Method Summary collapse

Instance Method Details

#after_parse(&block) ⇒ Object 



48
49
50
 
# File 'lib/happymapper.rb', line 48

def after_parse(&block)
  after_parse_callbacks.push(block)
end

#after_parse_callbacks ⇒ Object 



44
45
46
 
# File 'lib/happymapper.rb', line 44

def after_parse_callbacks
  @after_parse_callbacks ||= []
end

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



21
22
23
24
25
26
 
# File 'lib/happymapper.rb', line 21

def attribute(name, type, options={})
  attribute = Attribute.new(name, type, options)
  @attributes[to_s] ||= []
  @attributes[to_s] << attribute
  attr_accessor attribute.method_name.intern
end

#attributes ⇒ Object 



28
29
30
 
# File 'lib/happymapper.rb', line 28

def attributes
  @attributes[to_s] || []
end

#content(name) ⇒ Object 



39
40
41
42
 
# File 'lib/happymapper.rb', line 39

def content(name)
  @content = name
  attr_accessor name
end

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



32
33
34
35
36
37
 
# File 'lib/happymapper.rb', line 32

def element(name, type, options={})
  element = Element.new(name, type, options)
  @elements[to_s] ||= []
  @elements[to_s] << element
  attr_accessor element.method_name.intern
end

#elements ⇒ Object 



52
53
54
 
# File 'lib/happymapper.rb', line 52

def elements
  @elements[to_s] || []
end

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



60
61
62
 
# File 'lib/happymapper.rb', line 60

def has_many(name, type, options={})
  element name, type, {:single => false}.merge(options)
end

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



56
57
58
 
# File 'lib/happymapper.rb', line 56

def has_one(name, type, options={})
  element name, type, {:single => true}.merge(options)
end

#namespace(namespace = nil) ⇒ Object

Specify a namespace if a node and all its children are all namespaced elements. This is simpler than passing the :namespace option to each defined element.



67
68
69
70
 
# File 'lib/happymapper.rb', line 67

def namespace(namespace = nil)
  @namespace = namespace if namespace
  @namespace
end

#parse(xml, options = {}) ⇒ Object 



84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
 
# File 'lib/happymapper.rb', line 84

def parse(xml, options = {})
  if xml.is_a?(XML::Node)
    node = xml
  else
    if xml.is_a?(XML::Document)
      node = xml.root
    else
      node = XML::Parser.string(xml).parse.root
    end

    root = node.name == tag_name
  end

  namespace = @namespace || (node.namespaces && node.namespaces.default)
  namespace = "#{DEFAULT_NS}:#{namespace}" if namespace

  unless xpath = options[:xpath]
    xpath = root ? '/' : './/'
    xpath += "#{DEFAULT_NS}:" if namespace
    xpath += tag_name
  end

  nodes = node.find(xpath, Array(namespace))
  collection = nodes.collect do |n|
    obj = new

    attributes.each do |attr|
      obj.send("#{attr.method_name}=",
      attr.from_xml_node(n, namespace))
    end

    elements.each do |elem|
      obj.send("#{elem.method_name}=",
      elem.from_xml_node(n, namespace))
    end

    obj.send("#{@content}=", n.content) if @content

    obj.class.after_parse_callbacks.each { |callback| callback.call(obj) }

    obj
  end

  # per http://libxml.rubyforge.org/rdoc/classes/LibXML/XML/Document.html#M000354
  nodes = nil

  if options[:single] || root
    collection.first
  else
    collection
  end
end

#register_namespace(namespace, ns) ⇒ Object 



72
73
74
 
# File 'lib/happymapper.rb', line 72

def register_namespace(namespace, ns)
  @registered_namespaces.merge!(namespace => ns)
end

#tag(new_tag_name) ⇒ Object 



76
77
78
 
# File 'lib/happymapper.rb', line 76

def tag(new_tag_name)
  @tag_name = new_tag_name.to_s
end

#tag_name ⇒ Object 



80
81
82
 
# File 'lib/happymapper.rb', line 80

def tag_name
  @tag_name ||= to_s.split('::')[-1].downcase
end