| Interface | Description | 
|---|---|
| ExpressionVisitor | 
Expression model visitor | 
| Class | Description | 
|---|---|
| AbstractExpressionConfiguration | 
 Abstract node for expressions whose result depends on the selected configuration 
 | 
| BinaryExpression | 
 Binary Expression. 
 | 
| BooleanConstant | 
 Boolean  
true or false | 
| CheckBoxSelected | 
CheckBoxOption selection state | 
| ComboMatchingIndexes | 
ComboOption selection state | 
| Constant | 
 Root class of constant reification. 
 | 
| DoubleConstant | 
 64bits IEE754 floating point constant 
 | 
| EnabledNode | 
JPFExtensionTabNode enable state | 
| Expression | 
 Root class for option expression behavior. 
 | 
| IntegerConstant | 
 Integer constant (no limit) 
 | 
| ScriptConfiguration | 
 Selected script configuration property. 
 | 
| StringConstant | 
 Unicode characters string 
 | 
| UnaryExpression | 
 Unary Expression. 
 | 
| VMConfiguration | 
 Select VM configuration name 
 | 
| Exception | Description | 
|---|---|
| ExpressionError | 
 Exception thrown when an Expression cannot be computed to a constant. 
 |