1 files changed, 36 insertions, 0 deletions
diff --git a/app/models/chouette/object_id.rb b/app/models/chouette/object_id.rb
new file mode 100644
index 000000000..4f58048e1
--- /dev/null
+++ b/app/models/chouette/object_id.rb
@@ -0,0 +1,36 @@
+class Chouette::ObjectId < String
+
+  def valid?
+    parts.present?
+  end
+  alias_method :objectid?, :valid?
+
+  @@format = /^([0-9A-Za-z_]+):([A-Za-z]+):([0-9A-Za-z_-]+)$/ 
+  cattr_reader :format
+
+  def parts
+    match(format).try(:captures)
+  end
+
+  def system_id
+    parts.try(:first)
+  end
+
+  def object_type
+    parts.try(:second)
+  end
+
+  def local_id
+    parts.try(:third)
+  end
+  
+  def self.create(system_id, object_type, local_id)
+    new [system_id, object_type, local_id].join(":")
+  end
+
+  def self.new(string)
+    string ||= ""
+    self === string ? string : super
+  end
+
+end