| Interface | Description | 
|---|---|
| Expression | Base class of the public logical expression API. | 
| FunctionExpression | The interface of a function expression. | 
| Literal<T> | Deprecated This interface will be removed. | 
| NamedReference | Represents a field or column reference in the public logical expression API. | 
| UnparsedExpression | Represents an expression that is not parsed yet. | 
| Class | Description | 
|---|---|
| FunctionExpression.FuncExpressionImpl | A  FunctionExpressionimplementation | 
| Literal.LiteralImpl<T> | Creates a literal with the given type value. | 
| NamedReference.FieldReference | A  NamedReferencethat references a field or column. | 
| UnparsedExpression.UnparsedExpressionImpl | An  UnparsedExpressionimplementation |