adding set_relationship_properties and reset_relationship_properties

README.rdoc

@@ -53,6 +53,8 @@ A thin ruby wrapper Neography::Rest which tries to mirror the Neo4j Rest API and
   Neography::Rest.get_node_relationships(id, "incoming", "enemies")   # Get only incoming relationships of type enemies
   Neography::Rest.delete_relationship(id)                             # Delete a relationship
 
+  Neography::Rest.reset_relationship_properties(id, {"age" => 31})    # Reset a relationship's properties
+  Neography::Rest.set_relationship_properties(id, {"weight" => 200})  # Set a relationship's properties
   Neography::Rest.get_relationship_properties(id)                     # Get just the relationship properties
   Neography::Rest.get_relationship_properties(id, ["since","met"])    # Get some of the relationship properties
   Neography::Rest.remove_relationship_properties(id)                  # Remove all properties of a relationship

lib/neography/rest.rb

@@ -68,6 +68,11 @@ def create_relationship(type, from, to, props = nil)
          rescue_ij { post("/node/#{from}/relationships", options) }
       end
 
+      def reset_relationship_properties(id, properties)
+        options = { :body => properties.to_json, :headers => {'Content-Type' => 'application/json'} } 
+        rescue_ij { put("/relationship/#{id}/properties", options) }
+      end
+
       def get_relationship_properties(id, properties = nil)
         if properties.nil?
           rescue_ij { get("/relationship/#{id}/properties") }
@@ -92,6 +97,13 @@ def remove_relationship_properties(id, properties = nil)
         end
       end
 
+      def set_relationship_properties(id, properties)
+          properties.each do |key, value| 
+            options = { :body => value.to_json, :headers => {'Content-Type' => 'application/json'} } 
+            rescue_ij { put("/relationship/#{id}/properties/#{key}", options) } 
+          end
+      end
+
       def delete_relationship(id)
         rescue_ij { delete("/relationship/#{id}") }
       end

spec/integration/rest_spec.rb

@@ -266,6 +266,64 @@
     end
   end
 
+  describe "set_relationship_properties" do
+    it "can set a relationship's properties" do
+      new_node1 = Neography::Rest.create_node
+      new_node1[:id] = new_node1["self"].split('/').last
+      new_node2 = Neography::Rest.create_node
+      new_node2[:id] = new_node2["self"].split('/').last
+      new_relationship = Neography::Rest.create_relationship("friends", new_node1[:id], new_node2[:id])
+      new_relationship[:id] = new_relationship["self"].split('/').last
+      Neography::Rest.set_relationship_properties(new_relationship[:id], {"since" => '10-1-2010', "met" => "college"})
+      Neography::Rest.set_relationship_properties(new_relationship[:id], {"roommates" => "no"})
+      relationship_properties = Neography::Rest.get_relationship_properties(new_relationship[:id])
+      relationship_properties["since"].should == '10-1-2010'
+      relationship_properties["met"].should == "college"
+      relationship_properties["roommates"].should == "no"
+    end
+
+    it "it fails to set properties on a relationship that does not exist" do
+      new_node1 = Neography::Rest.create_node
+      new_node1[:id] = new_node1["self"].split('/').last
+      new_node2 = Neography::Rest.create_node
+      new_node2[:id] = new_node2["self"].split('/').last
+      new_relationship = Neography::Rest.create_relationship("friends", new_node1[:id], new_node2[:id])
+      new_relationship[:id] = new_relationship["self"].split('/').last
+      Neography::Rest.set_relationship_properties(new_relationship[:id].to_i + 10000, {"since" => '10-1-2010', "met" => "college"})
+      relationship_properties = Neography::Rest.get_relationship_properties(new_relationship[:id].to_i + 10000)
+      relationship_properties.should be_nil
+    end
+  end
+
+  describe "reset_relationship_properties" do
+    it "can reset a relationship's properties" do
+      new_node1 = Neography::Rest.create_node
+      new_node1[:id] = new_node1["self"].split('/').last
+      new_node2 = Neography::Rest.create_node
+      new_node2[:id] = new_node2["self"].split('/').last
+      new_relationship = Neography::Rest.create_relationship("friends", new_node1[:id], new_node2[:id])
+      new_relationship[:id] = new_relationship["self"].split('/').last
+      Neography::Rest.set_relationship_properties(new_relationship[:id], {"since" => '10-1-2010', "met" => "college"})
+      Neography::Rest.reset_relationship_properties(new_relationship[:id], {"roommates" => "no"})
+      relationship_properties = Neography::Rest.get_relationship_properties(new_relationship[:id])
+      relationship_properties["since"].should be_nil
+      relationship_properties["met"].should be_nil
+      relationship_properties["roommates"].should == "no"
+    end
+
+    it "it fails to reset properties on a relationship that does not exist" do
+      new_node1 = Neography::Rest.create_node
+      new_node1[:id] = new_node1["self"].split('/').last
+      new_node2 = Neography::Rest.create_node
+      new_node2[:id] = new_node2["self"].split('/').last
+      new_relationship = Neography::Rest.create_relationship("friends", new_node1[:id], new_node2[:id])
+      new_relationship[:id] = new_relationship["self"].split('/').last
+      Neography::Rest.reset_relationship_properties(new_relationship[:id].to_i + 10000, {"since" => '10-1-2010', "met" => "college"})
+      relationship_properties = Neography::Rest.get_relationship_properties(new_relationship[:id].to_i + 10000)
+      relationship_properties.should be_nil
+    end
+  end
+
   describe "get_relationship_properties" do
     it "can get all of a relationship's properties" do
       new_node1 = Neography::Rest.create_node