Class: AIXM::Document

Inherits:
Object show all
Includes:
Concerns::Association
Defined in:
lib/aixm/document.rb

Overview

The AIXM-Snapshot or OFMX-Snapshot document is the root container for aeronautical information such as airports or airspaces.

Cheat Sheet in Pseudo Code:

document = AIXM.document(
  namespace: String (UUID)
  created_at: Time or Date or String
  effective_at: Time or Date or String
  expiration_at: Time or Date or String or nil
)
document.add_feature(AIXM::Feature)

See Also:

Constant Summary collapse

NAMESPACE_RE = 
/\A[a-f\d]{8}-[a-f\d]{4}-[a-f\d]{4}-[a-f\d]{4}-[a-f\d]{12}\z/.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Concerns::Association

included

Constructor Details

#initialize(namespace: nil, created_at: nil, effective_at: nil, expiration_at: nil) ⇒ Document

See the cheat sheet for examples on how to create instances of this class.


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# File 'lib/aixm/document.rb', line 66

def initialize(namespace: nil, created_at: nil, effective_at: nil, expiration_at: nil)
  self.namespace = namespace
  self.created_at, self.effective_at, self.expiration_at = created_at, effective_at, expiration_at
end

Instance Attribute Details

#created_at ⇒ Time #created_at=(value) ⇒ Object

Creation date and UTC time

Overloads:

  • #created_at ⇒ Time

    Returns:

    • (Time)
  • #created_at=(value) ⇒ Object

    Parameters:


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# File 'lib/aixm/document.rb', line 46

def created_at
  @created_at
end

#effective_at ⇒ Time #effective_at=(value) ⇒ Object

Effective after date and UTC time

Overloads:

  • #effective_at ⇒ Time

    Returns:

    • (Time)
  • #effective_at=(value) ⇒ Object

    Parameters:


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# File 'lib/aixm/document.rb', line 54

def effective_at
  @effective_at
end

#expiration_at ⇒ Time? #expiration_at=(value) ⇒ Object

Expiration after date and UTC time

Overloads:

  • #expiration_at ⇒ Time?

    Returns:

    • (Time, nil)
  • #expiration_at=(value) ⇒ Object

    Parameters:

    • value (Time, nil) 

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# File 'lib/aixm/document.rb', line 62

def expiration_at
  @expiration_at
end

#namespace ⇒ String #namespace=(value) ⇒ Object

UUID to namespace the data contained in this document

Overloads:

  • #namespace ⇒ String

    Returns:

    • (String)
  • #namespace=(value) ⇒ Object

    Parameters:

    • value (String) 

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# File 'lib/aixm/document.rb', line 38

def namespace
  @namespace
end

Instance Method Details

#add_feature(feature) ⇒ self

Parameters:

Returns:

  • (self) 

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# File 'lib/aixm/document.rb', line 30

has_many :features, accept: ['AIXM::Feature']

#document ⇒ Nokogiri::XML::Document

Returns Nokogiri AIXM or OFMX document.

Returns:

  • (Nokogiri::XML::Document) —

    Nokogiri AIXM or OFMX document


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# File 'lib/aixm/document.rb', line 160

def document
  meta = {
    'xmlns:xsi': AIXM.schema(:namespace),
    version: AIXM.schema(:version),
    origin: "rubygem aixm-#{AIXM::VERSION}",
    namespace: (namespace if AIXM.ofmx?),
    regions: (regions.join(' '.freeze) if AIXM.ofmx?),
    created: @created_at.xmlschema,
    effective: @effective_at.xmlschema,
    expiration: (@expiration_at&.xmlschema if AIXM.ofmx?)
  }.compact
  Nokogiri::XML::Builder.new do |builder|
    builder.send(AIXM.schema(:root), meta) do |root|
      AIXM::Concerns::Memoize.method :to_uid do
        features.each { _1.add_to(root) }
      end
      if AIXM.ofmx? && AIXM.config.mid
        AIXM::PayloadHash::Mid.new(builder.doc).insert_mid
      end
    end
  end.doc
end

#errors ⇒ Array<String>

Validate the generated AIXM or OFMX against its XSD and return the errors found.

Returns:

  • (Array<String>) —

    validation errors


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# File 'lib/aixm/document.rb', line 152

def errors
  xsd = Nokogiri::XML::Schema(File.open(AIXM.schema(:xsd)))
  xsd.validate(Nokogiri::XML(to_xml)).reject do |error|
    AIXM.config.ignored_errors && error.message.match?(AIXM.config.ignored_errors)
  end
end

#features ⇒ Array<AIXM::Feature>

Returns features (e.g. airport or airspace) present in this document.

Returns:


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# File 'lib/aixm/document.rb', line 30

has_many :features, accept: ['AIXM::Feature']

#group_obstacles!(max_distance: AIXM.d(1, :nm)) ⇒ Integer

Note:

OFMX requires every obstacle, even single ones, to be part of an obstacle group which has a region assigned. For this to work, you must assure every obstacle has a region assigned when using this method.

Compare all ungrouped obstacles and create new obstacle groups whose members are located within max_distance pairwise.

Parameters:

  • max_distance (AIXM::D) (defaults to: AIXM.d(1, :nm)) —

    max distance between obstacle group member pairs (default: 1 NM)

Returns:

  • (Integer) —

    number of obstacle groups added


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# File 'lib/aixm/document.rb', line 124

def group_obstacles!(max_distance: AIXM.d(1, :nm))
  obstacles, list = features.find_by(:obstacle), {}
  while subject = obstacles.send(:shift)
    obstacles.each do |obstacle|
      if subject.xy.distance(obstacle.xy) <= max_distance
        [subject, obstacle].each { list[_1] = list[subject] || SecureRandom.uuid }
      end
    end
  end
  list.group_by(&:last).each do |_, grouped_list|
    first_obstacle = grouped_list.first.first
    obstacle_group = AIXM.obstacle_group(source: first_obstacle.source, region: first_obstacle.region)
    grouped_list.each { |o, _| obstacle_group.add_obstacle features.send(:delete, o) }
    add_feature obstacle_group
  end.count
end

#inspect ⇒ String

Returns:

  • (String) 

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# File 'lib/aixm/document.rb', line 72

def inspect
  %Q(#<#{self.class} created_at=#{created_at.inspect}>)
end

#regions ⇒ Array<String>

Regions used throughout this document.

Returns:

  • (Array<String>) —

    white space separated list of region codes


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# File 'lib/aixm/document.rb', line 110

def regions
  features.map(&:region).uniq.sort
end

#to_xml ⇒ String

Returns AIXM or OFMX markup.

Returns:

  • (String) —

    AIXM or OFMX markup


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# File 'lib/aixm/document.rb', line 184

def to_xml
  document.pretty.to_xml
end

#valid? ⇒ Boolean

Validate the generated AIXM or OFMX against its XSD.

Returns:

  • (Boolean) —

    whether valid or not


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# File 'lib/aixm/document.rb', line 144

def valid?
  errors.none?
end