graphql.util

Class SimpleTraverserContext<T>

java.lang.Object

graphql.util.SimpleTraverserContext<T>

All Implemented Interfaces:

TraverserContext<T>

public class SimpleTraverserContext<T>
extends java.lang.Object
implements TraverserContext<T>

Constructor Summary

Constructors

Constructor and Description
SimpleTraverserContext(T node)

Method Summary

Modifier and Type	Method and Description
java.lang.Object	getInitialData() Used to share something across all TraverserContext.
TraverserContext<T>	getParentContext() Returns parent context.
java.lang.Object	getParentResult() The result of the TraverserContext.getParentContext().
java.lang.Object	getResult() The result of this TraverserContext..
<S> S	getVar(java.lang.Class<? super S> key) Obtains a context local variable
boolean	isVisited() Informs that the current node has been already "visited"
void	setResult(java.lang.Object result) Set the result for this TraverserContext.
<S> TraverserContext<T>	setVar(java.lang.Class<? super S> key, S value) Stores a variable in the context
T	thisNode() Returns current node being visited
java.util.Set<T>	visitedNodes() Obtains all visited nodes and values received by the TraverserVisitor.enter(graphql.util.TraverserContext) method

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SimpleTraverserContext

public SimpleTraverserContext(T node)

Method Detail

thisNode

public T thisNode()

Description copied from interface: TraverserContext

Returns current node being visited

Specified by:

thisNode in interface TraverserContext<T>

Returns:

current node traverser is visiting

getParentContext

public TraverserContext<T> getParentContext()

Description copied from interface: TraverserContext

Returns parent context. Effectively organizes Context objects in a linked list so by following TraverserContext.getParentContext() links one could obtain the current path as well as the variables TraverserContext.getVar(java.lang.Class) stored in every parent context.

Specified by:

getParentContext in interface TraverserContext<T>

Returns:

context associated with the node parent

getParentResult

public java.lang.Object getParentResult()

Description copied from interface: TraverserContext

The result of the TraverserContext.getParentContext().

Specified by:

getParentResult in interface TraverserContext<T>

Returns:

the parent result

isVisited

public boolean isVisited()

Description copied from interface: TraverserContext

Informs that the current node has been already "visited"

Specified by:

isVisited in interface TraverserContext<T>

Returns:

true if a node had been already visited

visitedNodes

public java.util.Set<T> visitedNodes()

Description copied from interface: TraverserContext

Obtains all visited nodes and values received by the TraverserVisitor.enter(graphql.util.TraverserContext) method

Specified by:

visitedNodes in interface TraverserContext<T>

Returns:

a map containg all nodes visited and values passed when visiting nodes for the first time

getVar

public <S> S getVar(java.lang.Class<? super S> key)

Description copied from interface: TraverserContext

Obtains a context local variable

Specified by:

getVar in interface TraverserContext<T>

Type Parameters:

S - type of the variable

Parameters:

key - key to lookup the variable value

Returns:

a variable value of null

setVar

public <S> TraverserContext<T> setVar(java.lang.Class<? super S> key,
                                      S value)

Description copied from interface: TraverserContext

Stores a variable in the context

Specified by:

setVar in interface TraverserContext<T>

Type Parameters:

S - type of a varable

Parameters:

key - key to create bindings for the variable

value - value of variable

Returns:

this context to allow operations chaining

setResult

public void setResult(java.lang.Object result)

Description copied from interface: TraverserContext

Set the result for this TraverserContext.

Specified by:

setResult in interface TraverserContext<T>

Parameters:

result - to set

getResult

public java.lang.Object getResult()

Description copied from interface: TraverserContext

The result of this TraverserContext..

Specified by:

getResult in interface TraverserContext<T>

Returns:

the result

getInitialData

public java.lang.Object getInitialData()

Description copied from interface: TraverserContext

Used to share something across all TraverserContext.

Specified by:

getInitialData in interface TraverserContext<T>

Returns:

the initial data