Package org.jolokia.service.serializer.json

Class ArrayAccessor

java.lang.Object

org.jolokia.service.serializer.json.ArrayAccessor

All Implemented Interfaces:

ObjectAccessor

public class ArrayAccessor
extends Object
implements ObjectAccessor

ObjectAccessor for arrays of any type (primitive or object arrays).

Since:

Apr 19, 2009

Author:

roland

Constructor Summary

Constructors

Constructor	Description
ArrayAccessor()

Method Summary

Modifier and Type	Method	Description
boolean	canSetValue()	Whether this accessor can be used to set a value inside (directly or nested) a value of given class.
Object	extractObject(ObjectToJsonConverter pConverter, Object pArray, Deque<String> pPathParts, boolean pJsonify)	Extract an array or indexed element of an array.
Class<?>	getType()	Gets a class of supported objects.
Object	setObjectValue(Converter<String> pConverter, Object pArray, String pIndex, Object pValue)	Set a value in an array under given index

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jolokia.service.serializer.json.ObjectAccessor

extractString, supportsStringConversion

Constructor Details

ArrayAccessor

public ArrayAccessor()

Method Details

getType

public Class<?> getType()

Description copied from interface: ObjectAccessor

Gets a class of supported objects.

Specified by:

getType in interface ObjectAccessor

Returns:

supported type of the objects handled by this accessor

extractObject

public Object extractObject(ObjectToJsonConverter pConverter,
 Object pArray,
 Deque<String> pPathParts,
 boolean pJsonify)
                     throws AttributeNotFoundException

Extract an array or indexed element of an array. When pJsonify, return a JSONArray for entire array or JSON representation of the value under some index.

Specified by:

extractObject in interface ObjectAccessor

Parameters:

pConverter - the global converter to convert inner values and get serialization options

pArray - the value to convert (must be an array)

pPathParts - if not empty, top value may be an index into the array and remaining parts are passed recursively

pJsonify - whether to convert the array into JSONArray or its element to a relevant JSON representation

Returns:

the extracted object or entire array when the pPathParts stack is empty

Throws:

AttributeNotFoundException - if the index is not specified as non-negative integer

IndexOutOfBoundsException - if the index is not within the array

canSetValue

public boolean canSetValue()

Description copied from interface: ObjectAccessor

Whether this accessor can be used to set a value inside (directly or nested) a value of given class.

Specified by:

canSetValue in interface ObjectAccessor

Returns:

true if this extractor can be used to set inner values.

setObjectValue

public Object setObjectValue(Converter<String> pConverter,
 Object pArray,
 String pIndex,
 Object pValue)
                      throws IllegalAccessException,
InvocationTargetException

Set a value in an array under given index

Specified by:

setObjectValue in interface ObjectAccessor

Parameters:

pConverter - the global converter to convert the value being set into Class.getComponentType()

pArray - an array to set the value into

pIndex - index (as string) where to set the value within the array

pValue - the new value to set, subject to conversion

Returns:

the old value at this index

Throws:

IllegalAccessException

InvocationTargetException