NowFunction (Geotools modules 30-SNAPSHOT API)

Object
- ExpressionAbstract
- - DefaultExpression
  - - FunctionExpressionImpl
    - - NowFunction

All Implemented Interfaces:

Expression, Function, FunctionExpression, Factory
```
public class NowFunction
extends FunctionExpressionImpl
```
Return the current time as a Date. When evaluated directly, it returns a new value at each invocation. When evaluated as part of a filter against a DataStore, the value might be one, and fixed, during the data access. For example:
- If the datastore uses SimplifyingFilterVisitor, the function will be called once, and replaced with the returned value
- If the datastore encodes the function down in a native query language, the value could also be the same for all processed features. For example, the PostgreSQL now function always returns the time at the beginning of the current transaction, to give a consistent notion of current time across it.

Field Summary

Fields
Modifier and Type Field Description

static FunctionName NAME
- Fields inherited from class FunctionExpressionImpl
  fallback, functionName, name, params
- Fields inherited from interface Expression
  NIL

Constructor Summary

Constructors
Constructor Description

NowFunction()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`evaluate(Object object)`	Subclass should override, default implementation returns null.
`String`	`toString()`	Creates a String representation of this Function with the function name and the arguments.

Methods inherited from class FunctionExpressionImpl
accept, equals, functionName, getExpression, getFallbackValue, getFunctionName, getImplementationHints, getName, getParameters, hashCode, setFallbackValue, setParameters

Methods inherited from class DefaultExpression
isAttributeExpression, isExpression, isFunctionExpression, isGeometryExpression, isLiteralExpression, isMathExpression

Methods inherited from class ExpressionAbstract
evaluate

Methods inherited from class Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface Expression
evaluate

- Field Detail
  - NAME
```
public static FunctionName NAME
```
- Constructor Detail
  - NowFunction
```
public NowFunction()
```
- Method Detail
  - toString
```
public String toString()
```
    Description copied from class: FunctionExpressionImpl
    
    Creates a String representation of this Function with the function name and the arguments. The String created should be good for most subclasses
    
    Overrides:
    
    toString in class FunctionExpressionImpl
  - evaluate
```
public Object evaluate(Object object)
```
    Description copied from class: ExpressionAbstract
    
    Subclass should override, default implementation returns null.
    
    Specified by:
    
    evaluate in interface Expression
    
    Overrides:
    
    evaluate in class FunctionExpressionImpl
    
    Returns:
    
    default implementation returns null