Package org.apache.tapestry5.json

Class JSONCollectors

java.lang.Object

org.apache.tapestry5.json.JSONCollectors

public final class JSONCollectors
extends Object

Implementations of Collector that implement reductions to JSONArray and to JSONObject.

Since:

5.7

Method Summary

Modifier and Type	Method	Description
static <T> Collector<T,?,JSONArray>	toArray()	Returns a Collector that accumulates the input elements into a new JSONArray.
static <T> Collector<T,?,JSONObject>	toMap(Function<? super T,String> keyMapper, Function<? super T,Object> valueMapper)	Returns a Collector that accumulates elements into a JSONObject whose keys and values are the result of applying the provided mapping functions to the input elements.

Methods inherited from class java.lang.Object

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

Method Detail

toArray

public static <T> Collector<T,?,JSONArray> toArray()

Returns a Collector that accumulates the input elements into a new JSONArray.

Type Parameters:

T - the type of the input elements

Returns:

a Collector which collects all the input elements into a JSONArray, in encounter order

Since:

5.7

toMap

public static <T> Collector<T,?,JSONObject> toMap(Function<? super T,String> keyMapper,
                                                              Function<? super T,Object> valueMapper)

Returns a Collector that accumulates elements into a JSONObject whose keys and values are the result of applying the provided mapping functions to the input elements. In case of duplicate keys an IllegalStateException is thrown when the collection operation is performed.

Type Parameters:

T - the type of the input elements

Parameters:

keyMapper - a mapping function to produce String keys

valueMapper - a mapping function to produce values

Returns:

a Collector which collects elements into a JSONObject whose keys and values are the result of applying mapping functions to the input elements

Since:

5.7