Literal (Geotools modules 31-SNAPSHOT API)

All Superinterfaces:

Expression

All Known Implementing Classes:

ConstantExpression, LiteralExpressionImpl, OverlapBehaviorImpl
```
public interface Literal
extends Expression
```
Instances of this interface provide a constant, literal value that can be used in expressions.
The evaluate method of this class must return the same value as getValue().
It should be noted that content of getValue() may be persisted with with XML based technologies. As an example a geoapi Geometry may be written out uding GML3, while a JTS Geometry may be written out using GML2. You should not assume that the same instance will be made available to all callers, please limit your self to pure data objects and don't use Literal to pass state or operations between systems.

Since:

GeoAPI 2.0

Author:

Chris Dillard (SYS Technologies)

- Field Summary
  - Fields inherited from interface Expression
    NIL
- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  Object getValue()
  Returns the constant value held by this object.
  - Methods inherited from interface Expression
    accept, evaluate, evaluate

- Method Detail
  - getValue
```
Object getValue()
```
    Returns the constant value held by this object.