Specifying the search criteria directly into the search condition is not always practical or efficient. For example, to search for objects by author, you would need to create a search condition for every author in the database.  To solve this, we have the Variable node.

Variable nodes are used to pass parameters to the search condition, where the value is replaced by the parameter when the search is executed. To pass parameters to the search criteria, define them in the search condition, then pass them to the search using the pars parameter.

Let's look at examples for both the ConditionSearchNode and the SearchConditionList.

In this chapter

ConditionSearchNode

SearchConditionList