org.alfresco.json

Class JSONUtil

java.lang.Object

org.alfresco.json.JSONUtil

public class JSONUtil
extends Object

Utilities for JSON-parsing.

Author:

Frederik Heremans, Michael Suzuki

Field Summary

Fields

Modifier and Type	Field and Description
static String	FORM_PROCESSOR_JSON_PERSISTED_OBJECT
static String	HEADER_ACCEPT
static String	HEADER_CONTENT_TYPE
static String	JSON_DATA
static String	JSON_ID
static String	JSON_ITEMS
static String	JSON_NAME
static String	MIME_TYPE_JSON

Constructor Summary

Constructors

Constructor and Description
JSONUtil()

Method Summary

Methods

Modifier and Type	Method and Description
static org.json.simple.JSONArray	getArray(org.json.simple.JSONObject json, String key)
static org.json.simple.JSONArray	getDataArrayFromResponse(org.apache.http.HttpEntity method) Extract the "data" JSON-array from the method's response.
static org.json.simple.JSONObject	getDataFromResponse(org.apache.http.HttpEntity method) Extract the "data" JSON-object from the method's response.
static org.json.simple.JSONObject	getObject(org.json.simple.JSONObject json, String key)
static String	getString(org.json.simple.JSONObject json, String key, String defaultValue) Gets a string-value from the given JSON-object for the given key.
static void	populateRequestBody(org.apache.http.client.methods.HttpPost method, org.json.simple.JSONObject object) Adds the JSON as request-body the the method and sets the correct content-type.
static org.json.simple.JSONObject	readStream(org.apache.http.HttpEntity entity) Parses http response stream into a JSONObject.
static void	setJSONExpected(org.apache.http.client.methods.HttpPost method) Sets a header to notify server we expect a JSON-repsponse for this method.
static org.apache.http.entity.StringEntity	setMessageBody(org.json.simple.JSONObject json) Populate HTTP message call with given content.
static org.apache.http.entity.StringEntity	setMessageBody(String content) Populate HTTP message call with given content.

Methods inherited from class java.lang.Object

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

Field Detail

JSON_DATA

public static final String JSON_DATA

See Also:

Constant Field Values

JSON_ID

public static final String JSON_ID

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Constant Field Values

JSON_ITEMS

public static final String JSON_ITEMS

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Constant Field Values

JSON_NAME

public static final String JSON_NAME

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Constant Field Values

FORM_PROCESSOR_JSON_PERSISTED_OBJECT

public static final String FORM_PROCESSOR_JSON_PERSISTED_OBJECT

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Constant Field Values

MIME_TYPE_JSON

public static final String MIME_TYPE_JSON

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Constant Field Values

HEADER_ACCEPT

public static final String HEADER_ACCEPT

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Constant Field Values

HEADER_CONTENT_TYPE

public static final String HEADER_CONTENT_TYPE

See Also:

Constant Field Values

Constructor Detail

JSONUtil

public JSONUtil()

Method Detail

setJSONExpected

public static void setJSONExpected(org.apache.http.client.methods.HttpPost method)

Sets a header to notify server we expect a JSON-repsponse for this method.

Parameters:

method -

populateRequestBody

public static void populateRequestBody(org.apache.http.client.methods.HttpPost method,
                       org.json.simple.JSONObject object)

Adds the JSON as request-body the the method and sets the correct content-type.

Parameters:

method -

object -

getDataFromResponse

public static org.json.simple.JSONObject getDataFromResponse(org.apache.http.HttpEntity method)

Extract the "data" JSON-object from the method's response.

Parameters:

method - the method containing the response

Returns:

the "data" object. Returns null if response is not JSON or no data-object is present.

getDataArrayFromResponse

public static org.json.simple.JSONArray getDataArrayFromResponse(org.apache.http.HttpEntity method)

Extract the "data" JSON-array from the method's response.

Parameters:

method - the method containing the response

Returns:

the "data" object. Returns null if response is not JSON or no data-object is present.

getString

public static String getString(org.json.simple.JSONObject json,
               String key,
               String defaultValue)

Gets a string-value from the given JSON-object for the given key.

Parameters:

json - the json object

key - key pointing to the value

defaultValue - if value is not set or if value is not of type "String", this value is returned

getArray

public static org.json.simple.JSONArray getArray(org.json.simple.JSONObject json,
                                 String key)

Parameters:

json - JSON to extract array from

key - key under which array is present on JSON

Returns:

the JSONArray. Returns null, if the value is null or not an array.

getObject

public static org.json.simple.JSONObject getObject(org.json.simple.JSONObject json,
                                   String key)

Parameters:

json - JSON to extract object from

key - key under which object is present on JSON

Returns:

the JSONObject. Returns null, if the value is null or not an object.

setMessageBody

public static org.apache.http.entity.StringEntity setMessageBody(String content)
                                                          throws UnsupportedEncodingException

Populate HTTP message call with given content.

Parameters:

content - String content

Returns:

StringEntity content.

Throws:

UnsupportedEncodingException - if unsupported

setMessageBody

public static org.apache.http.entity.StringEntity setMessageBody(org.json.simple.JSONObject json)
                                                          throws UnsupportedEncodingException

Populate HTTP message call with given content.

Parameters:

json - JSONObject content

Returns:

StringEntity content.

Throws:

UnsupportedEncodingException - if unsupported

readStream

public static org.json.simple.JSONObject readStream(org.apache.http.HttpEntity entity)

Parses http response stream into a JSONObject.

Parameters:

stream - Http response entity

Returns:

JSONObject response