Class: JSONToNetworkGraph

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

Instance Method Summary collapse

Constructor Details

#initialize(input, field1, group1, field2, group2) ⇒ JSONToNetworkGraph

Returns a new instance of JSONToNetworkGraph.



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# File 'lib/jsontonetworkgraph.rb', line 7

def initialize(input, field1, group1, field2, group2)
  @input = JSON.parse(input)
  @field1 = field1
  @field2 = field2
  @group1 = group1
  @group2 = group2
  @nodehash = Hash.new
  @linkhash = Hash.new
  @grouphash = Hash.new
  @groupnum = 0
  @nodeindex = 0
end

Instance Method Details

Create or update the appropriate link



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# File 'lib/jsontonetworkgraph.rb', line 82

def addupdateLink(fieldvalue1, fieldvalue2, i)
  identifier = fieldvalue1.to_s + "-" + fieldvalue2.to_s
  if !@linkhash.include? identifier
    source = @nodehash[fieldvalue1].getID
    target = @nodehash[fieldvalue2].getID

    @nodehash[fieldvalue1].addLink
    @nodehash[fieldvalue2].addLink

    @linkhash[identifier] = Link.new(source, target, fieldvalue1, fieldvalue2, i)
  else
    @linkhash[identifier].update(i)
  end
end

#addupdateNode(fieldname, fieldvalue, i) ⇒ Object

Create or update the appropriate node



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# File 'lib/jsontonetworkgraph.rb', line 42

def addupdateNode(fieldname, fieldvalue, i)
  if !(@nodehash.include? fieldvalue)
    @nodehash[fieldvalue] = Node.new(@nodeindex, fieldvalue, fieldname, i)
    @nodeindex += 1
  else
    @nodehash[fieldvalue].update(i)
  end
end

#arrayCheckLink(fieldvalue1, fieldvalue2, i) ⇒ Object

Handle fields that are arrays



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# File 'lib/jsontonetworkgraph.rb', line 61

def arrayCheckLink(fieldvalue1, fieldvalue2, i)
  if (fieldvalue1.is_a? Array) && !(fieldvalue2.is_a? Array)
    fieldvalue1.each do |a|
      addupdateLink(a, fieldvalue2, i)
    end
  elsif (fieldvalue2.is_a? Array) && !(fieldvalue1.is_a? Array)
    fieldvalue2.each do |a|
      addupdateLink(fieldvalue1, a, i)
    end
  elsif (fieldvalue1.is_a? Array) && (fieldvalue2.is_a? Array)
    fieldvalue1.each do |a|
      fieldvalue2.each do |b|
        addupateLink(a, b, i)
      end
    end
  else
    addupdateLink(fieldvalue1, fieldvalue2, i)
  end
end

#arrayCheckNode(fieldname, fieldvalue, i) ⇒ Object

Handle fields that are arrays



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# File 'lib/jsontonetworkgraph.rb', line 31

def arrayCheckNode(fieldname, fieldvalue, i)
  if fieldvalue.is_a? Array
    fieldvalue.each do |a|
      addupdateNode(fieldname, a, i)
    end
  else
    addupdateNode(fieldname, fieldvalue, i)
  end
end

#genJSON ⇒ Object

Generate JSON with nodes and links



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# File 'lib/jsontonetworkgraph.rb', line 150

def genJSON
  genNodes
  genLinks
  linkCount
  groupNodes(@group1, @field1)
  groupNodes(@group2, @field2)
  
  nodearray = Array.new
  @nodehash.each_value do |n|
    nodearray.push(n.nodeData)
  end

  linkarray = Array.new
  @linkhash.each_value do |l|
    linkarray.push(l.linkData)
  end

  jsonhash = {:nodes => nodearray, :links => linkarray}
  JSON.pretty_generate(jsonhash)
end

#genLinks ⇒ Object

Generate all the links



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# File 'lib/jsontonetworkgraph.rb', line 52

def genLinks
  @input.each do |i|
    if !(i[@field1].nil? || i[@field2].nil? || i[@field1].empty? || i[@field2].empty?)
      arrayCheckLink(i[@field1], i[@field2], i)
    end
  end
end

#genNodes ⇒ Object

Generate all the nodes



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# File 'lib/jsontonetworkgraph.rb', line 21

def genNodes
  @input.each do |i|
    if !(i[@field1].nil? || i[@field2].nil? || i[@field1].empty? || i[@field2].empty?)
      arrayCheckNode(@field1, i[@field1], i)
      arrayCheckNode(@field2, i[@field2], i)
    end
  end
end

#groupNodes(groupfield, nodetype) ⇒ Object

Groups nodes based on another field



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# File 'lib/jsontonetworkgraph.rb', line 112

def groupNodes(groupfield, nodetype)
  @input.each do |i|
    if !(i[@field1].nil? || i[@field2].nil? || i[@field1].empty? || i[@field2].empty?)
      
      # Handles fields that are arrays for groups
      if i[groupfield].is_a? Array
        i[groupfield].each do |a|
          if !@grouphash.include? a
            @groupnum += 1
            @grouphash[a] = @groupnum
          end
        end

      # Adds non-array values to grouphash
      else
        if !@grouphash.include? i[groupfield]
          @groupnum += 1
          @grouphash[i[groupfield]] = @groupnum
        end
      end
    end
  end
  
  # Assigns the correct value to each node from the grouphash
  @nodehash.each_value do |n|
    if n.getType == nodetype
      n.getValue.each do |v|
        if v[groupfield].is_a? Array
          n.setGroup(@grouphash[n.getName])
        else
          n.setGroup(@grouphash[v[groupfield]])
        end
      end
    end
  end
end

#linkCount ⇒ Object

Count the number of links



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# File 'lib/jsontonetworkgraph.rb', line 98

def linkCount
  @linkhash.each_value do |l|
    count1 = @nodehash[l.instance_variable_get(:@field1)].instance_variable_get(:@linkcount)
    count2 = @nodehash[l.instance_variable_get(:@field2)].instance_variable_get(:@linkcount)

    if count1 > count2
      l.linkCount(count2)
    else
      l.linkCount(count1)
    end
  end
end