org.knopflerfish.service.console
Class Util

java.lang.Object
  org.knopflerfish.service.console.Util

public class Util
extends java.lang.Object

Utility methods for building CommandGroups to the console. This is a set of methods that does some useful things for displaying and sorting framework information.

Author:

Gatespace AB

Constructor Summary

Util()

Method Summary

static void	selectBundles(Bundle[] bundles, java.lang.String[] selection) Select bundles from an array of Bundle objects.
static void	selectBundles(Bundle[] bundles, java.lang.String[] selection, java.util.Set selectionMatches) Select bundles from an array of Bundle objects.
static java.lang.String	shortName(Bundle bundle) Get short name of specified bundle.
static java.lang.String	showId(Bundle bundle) Get bundle identifier as a constant length string.
static java.lang.String	showLeft(int width, java.lang.String str) Show a string left adjusted in constant length string.
static java.lang.String	showObject(java.lang.Object o) Get string representation of an object.
static java.lang.String	showRight(int width, java.lang.String str) Show a string right adjusted in constant length string.
static java.lang.String	showServiceClasses(ServiceReference sr) Get Service class list as a string.
static java.lang.String	showState(Bundle bundle) Get bundle state as a constant length string.
static void	sortBundles(Bundle[] b, boolean longName) Sort an array of bundle objects based on their location or shortname.
static void	sortBundlesId(Bundle[] b) Sort an array of bundle objects based on their Bundle Id.
static void	sortBundlesTime(Bundle[] b) Sort an array of bundle objects based on their Last modified time.
static java.lang.String	symbolicName(Bundle bundle) Get the symbolic name of the specified bundle.

Methods inherited from class java.lang.Object

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

Constructor Detail

Util

public Util()

Method Detail

selectBundles

public static void selectBundles(Bundle[] bundles,
                                 java.lang.String[] selection)

Select bundles from an array of Bundle objects. All the bundles in the bundle array is tested against all the strings in the selection array. If none of the strings match the element in the bundle array is set to NULL. A selection string matches if:

It matches the bundle ID. It matches the location of the bundle. It matches the symbolic name of the bundle. It matches the short name of the bundle.

It is also possible to start or end the selection string with the wildcard character '*' (Does not work for bundle id).

Parameters:

bundles - array of bundles to be checked, modified with result

selection - array of selection string to match against bundles

selectBundles

public static void selectBundles(Bundle[] bundles,
                                 java.lang.String[] selection,
                                 java.util.Set selectionMatches)

Select bundles from an array of Bundle objects. All the bundles in the bundle array is tested against all the strings in the selection array. If none of the strings match the element in the bundle array is set to NULL. A selection string matches if:

It matches the bundle ID. It matches the location of the bundle. It matches the symbolic name of the bundle. It matches the short name of the bundle.

It is also possible to start or end the selection string with the wildcard character '*' (Does not work for bundle id).

Parameters:

bundles - array of bundles to be checked, modified with result

selection - array of selection string to match against bundles

selectionMatches - Each patterns from selection array that matches a bundle will be added to this set.

sortBundles

public static void sortBundles(Bundle[] b,
                               boolean longName)

Sort an array of bundle objects based on their location or shortname. All entries containing NULL is placed at the end of the array.

Parameters:

b - array of bundles to be sorted, modified with result

longName - if true sort on location otherwise on shortname

sortBundlesId

public static void sortBundlesId(Bundle[] b)

Sort an array of bundle objects based on their Bundle Id. All entries containing NULL are placed at the end of the array.

Parameters:

b - array of bundles to be sorted, modified with result

sortBundlesTime

public static void sortBundlesTime(Bundle[] b)

Sort an array of bundle objects based on their Last modified time. All entries containing NULL are placed at the end of the array.

Parameters:

b - array of bundles to be sorted, modified with result

shortName

public static java.lang.String shortName(Bundle bundle)

Get short name of specified bundle. First, try to get the BUNDLE-NAME header. If it fails use the location of the bundle with all characters upto and including the last '/' or '\' and any trailing ".jar" stripped off.

Parameters:

bundle - the bundle

Returns:

The bundles shortname or null if input was null

symbolicName

public static java.lang.String symbolicName(Bundle bundle)

Get the symbolic name of the specified bundle.

Parameters:

bundle - the bundle

Returns:

The bundles symbolic name or null if not specified.

showState

public static java.lang.String showState(Bundle bundle)

Get bundle state as a constant length string. Show state left adjusted as 12 character string.

Parameters:

bundle - the bundle

Returns:

The bundles state

showId

public static java.lang.String showId(Bundle bundle)

Get bundle identifier as a constant length string. As long as the id is 5 digits or less it will return a string with length 6.

Parameters:

bundle - the bundle

Returns:

The bundles identifier

showServiceClasses

public static java.lang.String showServiceClasses(ServiceReference sr)

Get Service class list as a string.

Parameters:

sr - The service

Returns:

The bundles identifier

showObject

public static java.lang.String showObject(java.lang.Object o)

Get string representation of an object. If it is an array or Enumeration, do toString on each element. All other objects are shown with toString.

Parameters:

o - the object to show

Returns:

A string showing the object

showLeft

public static java.lang.String showLeft(int width,
                                        java.lang.String str)

Show a string left adjusted in constant length string. If the string is shorter then the desired length the string is padded with blanks. If it is longer it is cut.

Parameters:

str - the object to show

width - the desired width of the result

Returns:

A constant width string

showRight

public static java.lang.String showRight(int width,
                                         java.lang.String str)

Show a string right adjusted in constant length string. If the string is shorter then the desired length the string is padded with blanks. If it is longer it is cut.

Parameters:

str - the object to show

width - the desired width of the result

Returns:

A constant width string