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Global variables are very useful to persist information either:

• between elements within the execution of a logic 
• between executions of a logic for a set of items (i.e. PG, PL ...) if 'api.retainGlobal = true' is called

This 'retainGlobal' works also to make use of global variables during Content of api.global survives between executions of both 1st and 2nd pass (i.e. dirty pass). BUT But given that the second pass is a whole new JST, the global variables are persisted between the 2 passes.The , where the persistence is done in JSON.

So if you have a complex object (such as a 'Filter') and you store it in a global variable.As long as you are in the first pass, this global , the following applies:

• Such variable can be retrieved from the global cache as a 'Filter' object only as long as you are in the first pass.

...

• During the second pass, if you retrieve it, you will get the JSON representation of this

...

• object. Accessing the key of a map stored as a global variable in the second pass is done using the syntax:

  Code Block
  language groovy
  api.global.variable.map[(key)]

Global variables are very useful to persist information:

• Between elements within execution of a logic.

• Between executions of a logic for a set of items (i.e. PG, PL, ...) if api.retainGlobal = true is called.

This 'retainGlobal' also works for making use of global variables during executions of both 1st and 2nd pass (i.e. dirty pass).