org.apache.brooklyn.feed.http

Class JsonFunctions

java.lang.Object

org.apache.brooklyn.feed.http.JsonFunctions

public class JsonFunctions
extends java.lang.Object

Method Summary

Modifier and Type	Method and Description
static <any>	asJson()
static <T> <any>	cast(java.lang.Class<T> expected)
static <T> <any>	castM(java.lang.Class<T> expected)
static <T> <any>	castM(java.lang.Class<T> expected, T defaultValue)
static <T> <any>	forEach(<any> func)
static <T> <any>	getPath(java.lang.String path) returns an element from a single json primitive value given a full path JsonPath
static <any>	walk(java.lang.Iterable<java.lang.String> elements) returns a function which traverses the supplied path of entries in a json object (maps of maps of maps...),
static <any>	walk(java.lang.String... elements) as walkM(Iterable) taking a series of strings (dot separators not respected here)
static <any>	walk(java.lang.String elementOrDotSeparatedElements) as walkM(Iterable) taking a single string consisting of a dot separated path
static <any>	walkM(java.lang.Iterable<java.lang.String> elements) as #walk(Iterable)) but working with objects which Maybe contain JsonElement, simply preserving a Maybe.absent() object if additional walks are requested upon it (cf jquery)
static <any>	walkM(java.lang.String... elements) as #walk(String...)) and walk(Iterable)
static <any>	walkM(java.lang.String elements) as #walk(String)) and walk(Iterable)
static <any>	walkN(java.lang.Iterable<java.lang.String> elements) as #walk(Iterable)) but if any element is not found it simply returns null
static <any>	walkN(java.lang.String... elements) as #walk(String...)) but if any element is not found it simply returns null
static <any>	walkN(java.lang.String elements) as walk(String) but if any element is not found it simply returns null

Methods inherited from class java.lang.Object

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

Method Detail

asJson

public static <any> asJson()

forEach

public static <T> <any> forEach(<any> func)

walk

public static <any> walk(java.lang.String elementOrDotSeparatedElements)

as walkM(Iterable) taking a single string consisting of a dot separated path

walk

public static <any> walk(java.lang.String... elements)

as walkM(Iterable) taking a series of strings (dot separators not respected here)

walk

public static <any> walk(java.lang.Iterable<java.lang.String> elements)

returns a function which traverses the supplied path of entries in a json object (maps of maps of maps...),

Throws:

java.util.NoSuchElementException - if any path is not present as a key in that map

walkN

public static <any> walkN(@Nullable
                          java.lang.String elements)

as walk(String) but if any element is not found it simply returns null

walkN

public static <any> walkN(java.lang.String... elements)

as #walk(String...)) but if any element is not found it simply returns null

walkN

public static <any> walkN(java.lang.Iterable<java.lang.String> elements)

as #walk(Iterable)) but if any element is not found it simply returns null

walkM

public static <any> walkM(@Nullable
                          java.lang.String elements)

as #walk(String)) and walk(Iterable)

walkM

public static <any> walkM(java.lang.String... elements)

as #walk(String...)) and walk(Iterable)

walkM

public static <any> walkM(java.lang.Iterable<java.lang.String> elements)

as #walk(Iterable)) but working with objects which Maybe contain JsonElement, simply preserving a Maybe.absent() object if additional walks are requested upon it (cf jquery)

getPath

public static <T> <any> getPath(java.lang.String path)

returns an element from a single json primitive value given a full path JsonPath

cast

public static <T> <any> cast(java.lang.Class<T> expected)

castM

public static <T> <any> castM(java.lang.Class<T> expected)

castM

public static <T> <any> castM(java.lang.Class<T> expected,
                              T defaultValue)