Class: Wakame::Service::DependencyGraph

Inherits:
Object
  • Object
show all
Defined in:
lib/wakame/service.rb

Instance Method Summary collapse

Constructor Details

#initialize(service_cluster) ⇒ DependencyGraph

Returns a new instance of DependencyGraph.



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# File 'lib/wakame/service.rb', line 463

def initialize(service_cluster)
  @graph = Graph.new
  @graph.add_vertex(0)
  @service_cluster = service_cluster
  @nodes = {}
end

Instance Method Details

#add_object(obj) ⇒ Object 



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# File 'lib/wakame/service.rb', line 471

def add_object(obj)
  @nodes[obj.hash] = obj
  @graph.add_edge(0, obj.hash)
  self
end

#children(obj) ⇒ Object 



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# File 'lib/wakame/service.rb', line 500

def children(obj)
  obj = case obj
         when Class
           obj.to_s.hash
         when String
           obj.hash
         else
           raise ArgumentError
         end
  @graph.children(obj).collect { |hashid| property_obj(hashid) }
end

#each_level(root = nil, &blk) ⇒ Object 



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# File 'lib/wakame/service.rb', line 532

def each_level(root=nil, &blk)
  root = case root
         when nil
           0
         when Class
           root.to_s.hash
         when String
           root.hash
         else
           raise ArgumentError
         end
  @graph.level_layout(root).each { |l|
    l.each { |hashid|
      next if hashid == 0
      blk.call(@service_cluster.properties[@nodes[hashid]])
    }
  }
end

#levels(root = nil) ⇒ Object 



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# File 'lib/wakame/service.rb', line 512

def levels(root=nil)
  root = case root
         when nil
           0
         when Class
           root.to_s.hash
         when String
           root.hash
         else
           raise ArgumentError
         end
  n=[]
  @graph.level_layout(root).each { |l|
    next if l.size == 1 && l[0] == 0
    n << l.collect { |hashid| property_obj(hashid)}
    #n << l.collect { |hashid| @nodes[hashid].to_s }
  }
  n
end

#parents(obj) ⇒ Object 



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# File 'lib/wakame/service.rb', line 488

def parents(obj)
  obj = case obj
         when Class
           obj.to_s.hash
         when String
           obj.hash
         else
           raise ArgumentError
         end
  @graph.parents(obj).collect { |hashid| property_obj(hashid) }
end

#set_dependency(parent_obj, child_obj) ⇒ Object 



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# File 'lib/wakame/service.rb', line 477

def set_dependency(parent_obj, child_obj)
  return if parent_obj == child_obj
  @graph.add_edge(parent_obj.hash, child_obj.hash)
  @graph.remove_edge(0, child_obj.hash) if @graph.has_edge?(0, child_obj.hash)
  self
end

#size ⇒ Object 



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# File 'lib/wakame/service.rb', line 484

def size
  @graph.size - 1
end