Expressions in LinkCriteria

Expressions in Link Criteria provide a similar list of pre-defined objects. Again, note that you also have access to any other objects or variables currently defined in the AssemblyLine’s script engine.

Table 1. Pre-defined objects for use in Expressions in LinkCriteria

Object	Significance
config	The component’s Interface configuration object
mc	The MetamergeConfig object of the Config instance (config.getMetamergeConfig())
work	The Work entry of the AssemblyLine
task	The component itself, or a named component
alcomponent	The Connector or Function Component

So, for example, let’s say that we want to set up the Link Criteria for a Connector so that the Attribute to use in the match is determined at run time. In addition to standard data Attributes in the Work entry, there is also a matchAtt Attribute with the string value “uid”. In this case, the following Expression used in Link Criteria:

{work.matchAtt}    EQUALS  {work.uid}

is equivalent to this:

uid    EQUALS  $uid

Parent topic: Expressions