Server side expression editor

By default, the server side expression editor includes a drop-down list that has the following values:
Constant
String, Number, Boolean and NLS types are supported.
Expression
To define expressions with one or two operands. These operands can be constants, expressions, functions or context values. An expression supports arithmetic, comparison and boolean operands. Validation is performed when building the expression and in case it is not correct, a message is displayed. The expression can be used in nesting way.
Context
The context view includes a combo box with a context set. When a context is selected from the combo, the corresponding data context is shown in the view.
Global Function
The global functions are organized in different categories and multiple functions are provided in each category. To initiate one function, the value of all the function parameters must be specified. The value can be set using the expression editor. For more information, see Global Functions
The customization of project-specific functions is supported. For more information on creating project-specific functions, see Creating and registering a global function.