com.amazonaws.util.json

Class JsonUtils

java.lang.Object

com.amazonaws.util.json.JsonUtils

public class JsonUtils
extends Object

A utility class to process JSON contents.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	JsonUtils.JsonEngine JSON engine

Constructor Summary

Constructors

Constructor and Description
JsonUtils()

Method Summary

Modifier and Type	Method and Description
static AwsJsonReader	getJsonReader(Reader in) Gets a JSON reader.
static AwsJsonWriter	getJsonWriter(Writer out) Gets a JSON writer.
static Map<String,String>	jsonToMap(Reader in) Convenient method to convert a JSON string to a map.
static Map<String,String>	jsonToMap(String json) Convenient method to convert a JSON string to a map.
static String	mapToString(Map<String,String> map) Encode a string to string map as a JSON string.
static void	setJsonEngine(JsonUtils.JsonEngine jsonEngine) Sets the JSON engine.

Methods inherited from class java.lang.Object

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

Constructor Detail

JsonUtils

public JsonUtils()

Method Detail

setJsonEngine

public static void setJsonEngine(JsonUtils.JsonEngine jsonEngine)

Sets the JSON engine. Default is Gson.

Parameters:

jsonEngine - the json engine.

getJsonReader

public static AwsJsonReader getJsonReader(Reader in)

Gets a JSON reader. If no JSON engine is available, an AmazonClientException will be thrown.

Parameters:

in - reader

Returns:

a JSON reader

getJsonWriter

public static AwsJsonWriter getJsonWriter(Writer out)

Gets a JSON writer. If no JSON engine is available, an AmazonClientException will be thrown.

Parameters:

out - writer

Returns:

a JSON writer

jsonToMap

public static Map<String,String> jsonToMap(Reader in)

Convenient method to convert a JSON string to a map. Any object or array will be discarded. Number and boolean are stored as string.

Parameters:

in - reader

Returns:

a non null, unmodifiable, string to string map

jsonToMap

public static Map<String,String> jsonToMap(String json)

Convenient method to convert a JSON string to a map. Any object or array will be discarded. Number and boolean are stored as string.

Parameters:

json - a JSON encoding string

Returns:

a non null, unmodifiable, string to string map

mapToString

public static String mapToString(Map<String,String> map)

Encode a string to string map as a JSON string.

Parameters:

map - map to be encoded

Returns:

a non null JSON string