F #1750: Added method to oca for replacing TEMPLATE attributes (#1751)

F #1750: added method xmlelement to set content

F #1750: replace method works for all one objects

src/oca/ruby/opennebula/pool_element.rb

@@ -234,6 +234,26 @@ module OpenNebula
 
             return str
         end
+
+        # Replace the xml pointed by xpath using  a Hash object
+        # one object will be modified taking hash object pairs
+        #
+        # @param [String] xpath
+        # @param [Hash] options object containing pair key-value
+        #
+        # @returns the new xml representation
+        def replace(opts, xpath = "TEMPLATE")
+            if self[xpath]
+                opts.each do |att, value|
+                    xpath_u = xpath+"/#{att}"
+                    docs = retrieve_xmlelements(xpath_u)
+                    if docs.size == 1
+                        docs[0].set_content(value)
+                    end
+                end
+                update(template_like_str(xpath))
+            end
+        end
     end
 
     # Processes the monitoring data in XML returned by OpenNebula
@@ -265,7 +285,6 @@ module OpenNebula
         return hash
     end
 
-
     # Alternative method with better performance for huge number of timestamps.
     # For reasonable amounts of data, the current method is quicker
 =begin

src/oca/ruby/opennebula/virtual_machine.rb

@@ -325,6 +325,9 @@ module OpenNebula
             end
         end
 
+        def replace(opts = {})
+            super(opts, "USER_TEMPLATE")
+        end
 
         # Initiates the instance of the VM on the target host.
         #

src/oca/ruby/opennebula/xml_element.rb

@@ -145,6 +145,15 @@ module OpenNebula
             }
         end
 
+        # Update the content of the current doc
+        def set_content(content)
+            if NOKOGIRI
+                @xml.content = content
+            else
+                @xml.text = content
+            end
+        end
+
         # Gets an array of text from elements extracted
         # using  the XPATH  expression passed as filter
         def retrieve_elements(filter)