ExistsNode (Eclipse Ditto :: RQL :: Model 3.1.0-M1 API)

java.lang.Object

org.eclipse.ditto.rql.model.predicates.ast.ExistsNode

All Implemented Interfaces:: Node

public class ExistsNode extends Object implements Node

Implements an exists node. Such a node only has one parameter that is the field name to check for existence.

Constructor Summary

Constructors

Constructor

Description

ExistsNode(String property)

Constructor.
Method Summary

Modifier and Type

Method

Description

void

accept(PredicateVisitor predicateVisitor)

PredicateVisitor Pattern.

boolean

equals(Object o)

String

getProperty()

Retrieve the property of this exists node.

int

hashCode()

String

toString()

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

Constructor Details
- ExistsNode
  
  public ExistsNode(String property)
  
  Constructor. Creates a new node with the given property.
  
  Parameters:
  
  property - property of this exists node.
Method Details
- getProperty
  
  public String getProperty()
  
  Retrieve the property of this exists node.
  
  Returns:
  
  the property of the exists node.
- accept
  
  public void accept(PredicateVisitor predicateVisitor)
  
  Description copied from interface: Node
  
  PredicateVisitor Pattern. Takes a visitor as parameter and calls the corresponding visit method with itself as parameter.
  
  Specified by:
  
  accept in interface Node
  
  Parameters:
  
  predicateVisitor - the visitor which should be called.
- equals
  
  public boolean equals(Object o)
  
  Overrides:
  
  equals in class Object
- hashCode
  
  public int hashCode()
  
  Overrides:
  
  hashCode in class Object
- toString
  
  public String toString()
  
  Overrides:
  
  toString in class Object