View source for V2/CMS Tutorial/User Tools/Creating Content/Automation/Expression/Node

<h1 class="main-heading">Node Types</h1>

Each Node falls into one of the following categories:
* [[#Asset Identifier|Asset Identifier]]
* [[#Input|Input]]
* [[#Data Transformation|Data Transformation]]
* [[#Logic|Logic]]
* [[#Result|Result]]
* [[#Event|Event]]

===Asset Identifier===
====Asset====
Used to identify the asset to be monitored based on its configured '''site''', the chosen '''measurement''' and '''tag values'''. 

'''Incoming Nodes:''' NIL

'''Outgoing Nodes:''' 
* [[#Location|Location]]
* [[#Attribute|Attribute]]
* [[#Metric|Metric]]

====Location====
Used to capture Building, Block or Level information about the asset that triggered the expression.

'''Incoming Nodes:''' [[#Asset|Asset]]

'''Outgoing Nodes:''' [[#Compare|Compare]]

====Attribute====
Used to differentiate assets based on their [[V2/CMS_Tutorial/User_Tools/Creating_Content/Asset/Asset/Attribute|attribute]] value. 

'''Incoming Nodes:''' [[#Asset|Asset]]

'''Outgoing Nodes:''' [[#Compare|Compare]]

<div class="important">Note: Attributes are case sensitive. Using the wrong case invalidates the Expression and it will not be evaluated. </div>

===Input===
====Metric====
Outputs the value/s of a chosen metric. It can be set to output the last known value, or a range of values. 

'''Incoming Nodes:''' [[#Asset|Asset]] (Only one)

'''Outgoing Nodes:''' 
* [[#Function|Function]]
* [[#Filter|Filter]] if '''range of values''' is chosen
* [[#Aggregate|Aggregate]] if '''range of values''' is chosen
* [[#Compare|Compare]]

===Data Transformation===
====Function====
Does value-wise transformations:
* Get absolute value
* Round to nearest integer 
* Round up
* Round down 
* Custom Transformation
** Add 
** Subtract
** Multiply
** Divide
** Modulo

'''Incoming Nodes:'''
* [[#Metric|Metric]]
* [[#Attribute|Attribute]]
* [[#Function|Function]]
* [[#Filter|Filter]]
* [[#Aggregate|Aggregate]]

'''Outgoing Nodes:'''
* [[#Aggregate|Aggregate]]
* [[#Compare|Compare]]
* [[#Function|Function]]
* [[#Filter|Filter]]

====Filter====
Filters a range of values and outputs a subset.

'''Incoming Nodes:''' 
* [[#Metric|Metric]] if '''range of values''' is chosen
* [[#Function|Function]]
* [[#Filter|Filter]]

'''Outgoing Nodes:'''
* [[#Function|Function]]
* [[#Filter|Filter]]
* [[#Aggregate|Aggregate]]

====Aggregate====
Aggregates a range of values into a single value:
* Sum
* Count
* Average
* Median
* Max 
* Min
* Mode 
* Range
* Stddev
* Percentile
* Every 
* Any

'''Incoming Nodes:''' 
* [[#Metric|Metric]] if '''range of values''' is chosen
* [[#Function|Function]]
* [[#Filter|Filter]]

'''Outgoing Nodes:''' 
* [[#Compare|Compare]]
* [[#Function|Function]]

===Logic===
====Compare====
Does value comparisons:
* Equal
* Greater than (equal)
* Less than (equal)
* Not Equal

'''Incoming Nodes:''' 
* [[#Metric|Metric]]
* [[#Location|Location]]
* [[#Function|Function]]
* [[#Aggregate|Aggregate]]

'''Outgoing Nodes:'''
* [[#Logic|Logic]]
* [[#Result|Result]]

<div class="important">Note: When used with one Location Node, the input value should be the location's BBL ID. </div>

====Logic====
Does logical comparisons between '''2 or more''' boolean values: 
* AND 
* OR 

'''Incoming Nodes:''' 
* [[#Compare|Compare]]
* [[#Logic|Logic]]

'''Outgoing Nodes:'''
* [[#Logic|Logic]]
* [[#Result|Result]]

===Result===
====Result====
Represents the result of a Logic Graph.

'''Incoming Nodes:''' 
* [[#Compare|Compare]]
* [[#Logic|Logic]]

'''Outgoing Nodes:''' [[#Event|Event]]

===Event===
====Event====
Specifies the event to be triggered when result of expression changes from '''True to False''' or '''False to True'''.

'''Incoming Nodes:''' [[#Result|Result]]

'''Outgoing Nodes:''' NIL

<div class="important">Note: This event refers to an event created within the CMS. See [[V2/CMS_Tutorial/User_Tools/Creating_Content/Automation/Event|Add Event]] to learn how to add an event in the CMS.</div>