Module: OM::XML::PropertyValueOperators

Defined in:
lib/om/xml/property_value_operators.rb

Instance Method Summary collapse

Instance Method Details

#property_value_delete(opts = {}) ⇒ Object

def property_value_set(property_ref, query_opts, node_index, new_value) end



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# File 'lib/om/xml/property_value_operators.rb', line 71

def property_value_delete(opts={})
  parent_select = Array( opts[:parent_select] )
  parent_index = opts[:parent_index]
  child_index = opts[:child_index]
  xpath_select = opts[:select]
  
  if !xpath_select.nil?
    node = lookup(xpath_select, nil).first
  else
    parent_nodeset = lookup(parent_select, parent_select)
    # parent_nodeset = lookup(parent_select[0])
    
    if parent_index.nil?
      node = node_from_set(parent_nodeset, child_index)
    else
      parent = node_from_set(parent_nodeset, parent_index)
      # this next line is a hack around the fact that element_children() sometimes doesn't work.
      node = node_from_set(parent.xpath("*"), child_index)
    end
  end
  
  node.remove
end

#property_value_update(opts = {}) ⇒ Object 



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# File 'lib/om/xml/property_value_operators.rb', line 50

def property_value_update(opts={})
  parent_select = Array( opts[:parent_select] )
  child_index = opts[:child_index]
  template = opts[:template]
  new_value = opts[:value]
  xpath_select = opts[:select]
  
  if !xpath_select.nil?
    node = lookup(xpath_select, nil).first
  else
    parent_nodeset = lookup(parent_select[0], parent_select[1])
    node = node_from_set(parent_nodeset, child_index)
  end
  
  node.content = new_value
  
end

#property_values(lookup_args) ⇒ Object 



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# File 'lib/om/xml/property_value_operators.rb', line 7

def property_values(lookup_args)
  result = []
  lookup(lookup_args).each {|node| result << node.text }
  return result
end

#property_values_append(opts = {}) ⇒ Object 



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# File 'lib/om/xml/property_value_operators.rb', line 13

def property_values_append(opts={})
  parent_select = Array( opts[:parent_select] )
  child_index = opts[:child_index]
  template = opts[:template]
  new_values = Array( opts[:values] )
  
  # If template is a string, use it as the template, otherwise use it as arguments to builder_template
  unless template.instance_of?(String)
    template_args = Array(template)
    if template_args.last.kind_of?(Hash)
      template_opts = template_args.delete_at(template_args.length - 1)
    else
      template_opts = {}
    end
    template = self.class.builder_template( template_args, template_opts )
  end    
  
  parent_nodeset = lookup(parent_select[0], parent_select[1])
  parent_node = node_from_set(parent_nodeset, child_index)
  
  if parent_node.nil?
    raise OX::ParentNodeNotFoundError, "Failed to find a parent node to insert values into based on :parent_select #{parent_select.inspect} with :child_index #{child_index.inspect}"
  end
  
  builder = Nokogiri::XML::Builder.with(parent_node) do |xml|
    new_values.each do |builder_new_value|
      builder_arg = eval('"'+ template + '"') # this inserts builder_new_value into the builder template
      eval(builder_arg)
    end
  end
      
  # Nokogiri::XML::Node.new(builder.to_xml, foo)
  
  return parent_node
  
end