Introduce model changes for v2v

app/models/v2v_mapping.rb

@@ -0,0 +1,21 @@
+class V2vMapping < ApplicationRecord
+  has_many :v2v_mapping_items, dependent: :destroy
+
+  validates :name, :presence => true, :uniqueness => true
+
+  def self.select_mappings(vms)
+    resources = vms.each_with_object([]) do |vm, array|
+      array << vm.ems_cluster
+      array.concat(vm.storages)
+      # array.concat(vm.networks)  # how to get networks?
+    end.compact.uniq
+
+    select_mappings_by_sources(resources)
+  end
+
+  def self.select_mappings_by_sources(sources)
+    all.select do |m|
+      true if m.mapping_items.where(:source => sources).count == sources.count
+    end
+  end
+end

app/models/v2v_mapping_item.rb

@@ -0,0 +1,7 @@
+class V2vMappingItem < ApplicationRecord
+  belongs_to :v2v_mapping
+  belongs_to :source,      :polymorphic => true
+  belongs_to :destination, :polymorphic => true
+
+  validates :source_id, :uniqueness => {:scope => [:v2v_mapping_id, :source_type]}
+end

app/models/vm_or_template.rb

@@ -134,6 +134,7 @@ class VmOrTemplate < ApplicationRecord
   has_many                  :connected_shares, -> { where(:resource_type => "VmOrTemplate") }, :foreign_key => :resource_id, :class_name => "Share"
   has_many                  :labels, -> { where(:section => "labels") }, :class_name => "CustomAttribute", :as => :resource, :dependent => :destroy
 
+  belongs_to                :v2v_plan, :class_name => "ServiceTemplate"
   acts_as_miq_taggable
 
   virtual_column :is_evm_appliance,                     :type => :boolean,    :uses => :miq_server