org.ow2.jasmine.probe.collectors.jmx.internal
Class FragmentUtil

java.lang.Object
  org.ow2.jasmine.probe.collectors.jmx.internal.FragmentUtil

public class FragmentUtil
extends Object

Manage JMX Attribute fragments. Attribute fragments are elements of complex attributes. Sometimes, users need to poll such attribute elements, for example an item in a Map, and don't need the entire attribute value. A naming policy is necessary to define the attributes elements to be polled by a JMX indicator. Also, when a JMX indicator specifies an attribute (or an attribute fragment) whose value has a complex type, the value must be decomposed in simple elements (elementary fragments). The naming policy is used to identify the fragments returned by a probe polling this indicator.

Author:

danesa

Field Summary

static String	BRACKLEFT
static String	BRACKRIGHT
static String	COMMA
static String	DOT

Constructor Summary

FragmentUtil()

Method Summary

static String	getAttributeName(String name) Get the attribute name from the attribute fragment name
static String	getElementName(String fragmentName) Get the name of an element from a fragment name.
static String	getElementName(String name, String attributeName) Get the first attribute element's name in a String having the following expected format: ...
static String	getIndexes(String name, String attributeName) Get the indexes in an indexed attribute element having the following expected format: ..., where has form indexes
static String	getItemName(String fragmentName) Get the name of an item's key from a fragment name.
static String	getKeyName(String name, String attributeName)
static String	getNameForArrayElement(String name, String index) Generate the name of an element of an Array.
static String	getNameForElem(String name, String elemName) Generate the name of a fragment corresponding to an Array or TabularData's item
static String	getNameForItem(String name, String key) Generate the name of a fragment corresponding to a CompositeData's item.
static String	getNameForTabularElement(String name, Object[] indexes) Generate the name of a fragment corresponding to a row of in a TabularData
static boolean	isFragmentName(String name)
static String	nameForIndexElement(String name, String index) Generate the name of an element of indexed object.
static String	nameForItem(String name, String key) Generate the name of a fragment corresponding to a CompositeData's item.
static boolean	nextElementIsIndex(String name, String attributeName) Check if the first attribute element in the given String corresponds to an indexed element.
static boolean	nextElementIsKey(String name, String attributeName) Check if the first attribute element in the given String corresponds to a key element

Methods inherited from class java.lang.Object

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

Field Detail

DOT

public static String DOT

COMMA

public static String COMMA

BRACKLEFT

public static String BRACKLEFT

BRACKRIGHT

public static String BRACKRIGHT

Constructor Detail

FragmentUtil

public FragmentUtil()

Method Detail

isFragmentName

public static boolean isFragmentName(String name)

Parameters:

name - attribute or fragment name

Returns:

true if the name has a fragment name pattern

getNameForItem

public static String getNameForItem(String name,
                                    String key)

Generate the name of a fragment corresponding to a CompositeData's item.

Parameters:

name - composite's name

key - the item's name

getNameForElem

public static String getNameForElem(String name,
                                    String elemName)

Generate the name of a fragment corresponding to an Array or TabularData's item

Parameters:

name -

elemName -

Returns:

getNameForArrayElement

public static String getNameForArrayElement(String name,
                                            String index)

Generate the name of an element of an Array.

Parameters:

name - the name of the Array attribute or fragment

index - the element's index

Returns:

getNameForTabularElement

public static String getNameForTabularElement(String name,
                                              Object[] indexes)

Generate the name of a fragment corresponding to a row of in a TabularData

Parameters:

name - the name of the TabularData attribute or fragment

indexes - the row's indexes

Returns:

getItemName

public static String getItemName(String fragmentName)
                          throws FragmentNameException

Get the name of an item's key from a fragment name. Suppose that the fragment name has the following format: nameDOTkey

Parameters:

fragmentName - fragment name

Returns:

key

Throws:

FragmentNameException - A key name could not be identified.

getElementName

public static String getElementName(String fragmentName)
                             throws FragmentNameException

Get the name of an element from a fragment name. Suppose that the fragment name has the following format: nameBRACKLEFTindexesBRACKRIGHT

Parameters:

fragmentName - fragment name

Returns:

the element name

Throws:

FragmentNameException

nameForIndexElement

public static String nameForIndexElement(String name,
                                         String index)

Generate the name of an element of indexed object.

Parameters:

name - the name associated to the indexed object.

index - the element's index

Returns:

nameForItem

public static String nameForItem(String name,
                                 String key)

Generate the name of a fragment corresponding to a CompositeData's item.

Parameters:

name - composite's name

key - the item's name

getAttributeName

public static String getAttributeName(String name)
                               throws FragmentNameException

Get the attribute name from the attribute fragment name

Parameters:

name - attribute fragment name

Returns:

attribute name

Throws:

FragmentNameException - An attribute name could not be identified as no DOT nor BRACKLEFT found.

getKeyName

public static String getKeyName(String name,
                                String attributeName)

getIndexes

public static String getIndexes(String name,
                                String attributeName)
                         throws FragmentNameException

Get the indexes in an indexed attribute element having the following expected format: ..., where has form indexes

Parameters:

name - The String to process.

attributeName - The supposed starting attribute name

Returns:

the found indexes

Throws:

FragmentNameException - the given String does not have the expected format

getElementName

public static String getElementName(String name,
                                    String attributeName)
                             throws FragmentNameException

Get the first attribute element's name in a String having the following expected format: ...

Parameters:

name - The String to process.

attributeName - The supposed starting attribute name

Returns:

the element name

Throws:

FragmentNameException

nextElementIsKey

public static boolean nextElementIsKey(String name,
                                       String attributeName)
                                throws FragmentNameException

Check if the first attribute element in the given String corresponds to a key element

Parameters:

name - A String having the expected format: ...

attributeName - The supposed starting attribute name

Returns:

true if the first attribute element has the expected format: .

Throws:

FragmentNameException

nextElementIsIndex

public static boolean nextElementIsIndex(String name,
                                         String attributeName)
                                  throws FragmentNameException

Check if the first attribute element in the given String corresponds to an indexed element.

Parameters:

name - A String having the expected format: ...

attributeName - The supposed starting attribute name

Returns:

true if the first attribute element has the expected format: [index]

Throws:

FragmentNameException