Class: PolyrexCreateObject

Inherits:
Object
  • Object
show all
Defined in:
lib/polyrex-createobject.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(schema, id = '1') ⇒ PolyrexCreateObject

Returns a new instance of PolyrexCreateObject.



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# File 'lib/polyrex-createobject.rb', line 13

def initialize(schema, id='1')
  @@id = id

  @schema = schema

  if @schema then
    a = @schema.split('/')        
    @rpaths = (a.length).times.inject({}) do |r| 
      r.merge ({a.join('/').gsub(/\[[^\]]+\]/,'') => a.pop}) 
    end

    values = @rpaths.values.reverse

    @rpaths.keys.reverse.each.with_index do |key,i |
      @rpaths[key] = values[i..-1].join('/')
    end

    names = @rpaths.to_a[0..-2].map {|k,v| [v[/[^\[]+/], k]}
    
    attach_create_handlers(names)
  end
end

Instance Attribute Details

#parent_node ⇒ Object

Returns the value of attribute parent_node.



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# File 'lib/polyrex-createobject.rb', line 11

def parent_node
  @parent_node
end

Instance Method Details

#attach_create_handlers(names) ⇒ Object 



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# File 'lib/polyrex-createobject.rb', line 43

def attach_create_handlers(names)
  methodx = names[0..-2].map do |name, xpath|

# nested records
%Q(
def #{name}(params={}, id=nil,&blk) 

  id ||= @@id
  orig_parent = @parent_node
  new_parent = create_node(@parent_node, @rpaths['#{xpath}'], params, id).element('records')

  if block_given? then
    self.record = new_parent
    blk.call(self) 
  end

  self.record = orig_parent

  self
end
)
  end

  name, xpath = names[-1]

# top record    
  methodx << %Q(
def #{name}(params={}, id=nil,&blk)
id ||= @@id
orig_parent = @parent_node
self.record = @parent_node.element('records') unless @parent_node.name == 'records'
self.record = create_node(@parent_node, @rpaths['#{xpath}'], params, id).element('records')        
blk.call(self) if block_given?
self.record = orig_parent

self
end
)

  self.instance_eval(methodx.join("\n"))
  
end

#create_node(parent_node, child_schema, params = {}, id = nil) ⇒ Object 



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# File 'lib/polyrex-createobject.rb', line 86

def create_node(parent_node, child_schema, params={}, id=nil)


  buffer = PolyrexSchema.new(child_schema[/^[^\/]+/]).to_s
  record = Rexle.new buffer     

  if id then
    @@id.succ!
  else
    if @@id.to_i.to_s == @@id.to_s then
      @@id.succ!
    else
      @@id = @parent_node.element('count(//@id)').to_i + 2
    end
  end

  record.root.add_attribute({'id' => @@id.to_s.clone})

  a = child_schema[/[^\[]+(?=\])/].split(',')

  summary = record.root.element('summary')
  a.each do |field_name|  
    field = summary.element(field_name.strip)
    field.text = params[field_name.strip.to_sym]
  end

  parent_node.add record.root

end

#id ⇒ Object 



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# File 'lib/polyrex-createobject.rb', line 37

def id() @@id end

#id=(s) ⇒ Object 



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# File 'lib/polyrex-createobject.rb', line 36

def id=(s)  @@id = s; self end

#record=(node) ⇒ Object 



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# File 'lib/polyrex-createobject.rb', line 39

def record=(node)
  @parent_node = node
end

#xpath_to_rpath(xpath) ⇒ Object 



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# File 'lib/polyrex-createobject.rb', line 117

def xpath_to_rpath(xpath)
  xpath.split('/').each_slice(2).map(&:last).join('/').gsub(/\[[^\]]+\]/,'')
end