com.atlassian.confluence.util
Class LabelUtil

java.lang.Object
  extended by com.atlassian.confluence.util.LabelUtil

public final class LabelUtil
extends Object

Utility class designed to assist dealing with the client interface. In particular, the conversion from a string to a label and back, and the conversion from a list of strings to a list of labels and back.


Field Summary
static String LABEL_DELIM
          The canonical delimiter in output
static String LABEL_DELIM_CHARS
          The characters accepted as label delimiters
static int MAX_ALLOWED_LABELS
          The maximum number of labels allowed on a page or space.
static int MAX_ALLOWED_LABELS_PER_INPUT
          The maximum number of labels we allow to be entered via a single sumbission from the user interface.
 
Constructor Summary
LabelUtil()
           
 
Method Summary
static Label addLabel(String labelReference, LabelManager labelManager, Labelable object)
          Adds the label to the specified object.
static String convertToDelimitedString(Labelable obj, com.atlassian.user.User user)
          Helper method converting list of labels associated with the labelable object into a space separated string of the label names.
static String convertToDelimitedString(List names)
           
static int countLabels(String input)
          Counts the labels present in an input string.
static List<Label> extractLabelsFromLabellings(List<Labelling> labellings)
          Simple utility method to extract the label instances from the given list of labelling instances.
static void fixLabels(List suggestedLabels)
           
static com.atlassian.core.util.filter.ListFilter getLabelFilters(com.atlassian.user.User user, boolean hideSpecialLabels)
          returns only labels the user can see and also strips out special labels if 'hideSpecialLabels' flag is set
static com.google.common.base.Predicate<Label> getLabelPredicate(com.atlassian.user.User user, boolean hideSpecialLabels)
           
static List<Label> getLabelsFor(String labels, LabelManager labelManager)
           
static List getRecentAndPopularLabels(String spaceKey, LabelManager labelManager, int maxResults, String user)
           
static List getRecentAndPopularLabelsForEntity(ContentEntityObject entity, LabelManager labelManager, int maxResults, String user)
           
static List getVisibleLabelNames(List labels, String username)
          Get a list of the visible label names for this content.
static boolean isValidLabelLength(String input)
           
static boolean isValidLabelLengths(Collection labelNames)
           
static boolean isValidLabelLengths(String concatenatedLabelNames)
           
static boolean isValidLabelName(String labelName)
           
static boolean isValidLabelNames(Collection names)
           
static boolean isValidLabelNames(String delimitedLabelNames)
           
static String joinIds(List labels, String separator)
           
static List rankResults(List results)
           
static void recordLabelInteractionInHistory(Label label)
           
static List<String> split(String input)
          Split the input string according to the label delimitation rules.
static boolean syncState(String source, LabelManager labelManager, com.atlassian.user.User user, Labelable dest)
          Neat method that will synchronize a space separated list of label names with the labels contained within the labelable object.
static boolean syncState(String source, LabelManager labelManager, com.atlassian.user.User user, Labelable dest, boolean ignored)
          Deprecated. since 5.1. Use syncState(String, LabelManager, User, Labelable)
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

LABEL_DELIM_CHARS

public static final String LABEL_DELIM_CHARS
The characters accepted as label delimiters

See Also:
Constant Field Values

LABEL_DELIM

public static final String LABEL_DELIM
The canonical delimiter in output

See Also:
Constant Field Values

MAX_ALLOWED_LABELS_PER_INPUT

public static final int MAX_ALLOWED_LABELS_PER_INPUT
The maximum number of labels we allow to be entered via a single sumbission from the user interface.

See Also:
Constant Field Values

MAX_ALLOWED_LABELS

public static final int MAX_ALLOWED_LABELS
The maximum number of labels allowed on a page or space.

See Also:
Constant Field Values
Constructor Detail

LabelUtil

public LabelUtil()
Method Detail

convertToDelimitedString

public static String convertToDelimitedString(Labelable obj,
                                              com.atlassian.user.User user)
Helper method converting list of labels associated with the labelable object into a space separated string of the label names.


convertToDelimitedString

public static String convertToDelimitedString(List names)

joinIds

public static String joinIds(List labels,
                             String separator)

isValidLabelNames

public static boolean isValidLabelNames(String delimitedLabelNames)
Parameters:
delimitedLabelNames - contains a list of label names delimited by LABEL_DELIM_CHARS
Returns:
true if the delimitedLabelNames represents a string of valid label names, false otherwise.

isValidLabelNames

public static boolean isValidLabelNames(Collection names)
Parameters:
names - a collection of label names as Strings.
Returns:
true if the delimitedLabelNames represents a string of valid label names, false otherwise.

isValidLabelName

public static boolean isValidLabelName(String labelName)

isValidLabelLengths

public static boolean isValidLabelLengths(String concatenatedLabelNames)

isValidLabelLengths

public static boolean isValidLabelLengths(Collection labelNames)

isValidLabelLength

public static boolean isValidLabelLength(String input)

getVisibleLabelNames

public static List getVisibleLabelNames(List labels,
                                        String username)
Get a list of the visible label names for this content. System labels and personal labels that do not belong to this user will be stripped. Visible non-global label names will have their namespace prefixed( i.e. my:foo, team:bar)

Parameters:
labels - the list of Label objects to filter
username - the user who the list is being filtered for
Returns:
a list of the names of the labels as Strings that the user can see

split

public static List<String> split(String input)
Split the input string according to the label delimitation rules.

Parameters:
input - space separated string of labels
Returns:
a collection of strings, each representing a label name, in the order in which they appeared in the original input. Duplicates excluded.

countLabels

public static int countLabels(String input)
Counts the labels present in an input string. Counts each appearance of duplicate labels.

Parameters:
input - a string of labels delimited by the characters in LABEL_DELIM_CHARS. May be null or empty.
Returns:
the number of labels present in the string. Returns 0 for empty or null strings.

syncState

@Deprecated
public static boolean syncState(String source,
                                           LabelManager labelManager,
                                           com.atlassian.user.User user,
                                           Labelable dest,
                                           boolean ignored)
Deprecated. since 5.1. Use syncState(String, LabelManager, User, Labelable)

Neat method that will synchronize a space separated list of label names with the labels contained within the labelable object. Labels that do not exist in the comma separated list will be removed, and labels that appear in the comma separated list will be created.

Parameters:
source - is a space separated list of label names, eg: the following list "LabelA LabelB LabelC" will be converted into label instances with the names 'LabelA', 'LabelB' and 'LabelC'
ignored - is ignored

syncState

public static boolean syncState(String source,
                                LabelManager labelManager,
                                com.atlassian.user.User user,
                                Labelable dest)
Neat method that will synchronize a space separated list of label names with the labels contained within the labelable object. Labels that do not exist in the comma separated list will be removed, and labels that appear in the comma separated list will be created.

Parameters:
source - is a space separated list of label names, eg: the following list "LabelA LabelB LabelC" will be converted into label instances with the names 'LabelA', 'LabelB' and 'LabelC'

addLabel

public static Label addLabel(String labelReference,
                             LabelManager labelManager,
                             Labelable object)
Adds the label to the specified object. The label is a string in the form of an unparsed label, and is validated by isValidLabelName(String) and isValidLabelLength(String).

If the label can't be added, already exists, or is invalid, this method returns null.

Returns:
the label that was created and added or null if no label was added.

recordLabelInteractionInHistory

public static void recordLabelInteractionInHistory(Label label)

rankResults

public static List rankResults(List results)

getRecentAndPopularLabelsForEntity

public static List getRecentAndPopularLabelsForEntity(ContentEntityObject entity,
                                                      LabelManager labelManager,
                                                      int maxResults,
                                                      String user)

getRecentAndPopularLabels

public static List getRecentAndPopularLabels(String spaceKey,
                                             LabelManager labelManager,
                                             int maxResults,
                                             String user)

fixLabels

public static void fixLabels(List suggestedLabels)

extractLabelsFromLabellings

public static List<Label> extractLabelsFromLabellings(List<Labelling> labellings)
Simple utility method to extract the label instances from the given list of labelling instances.

Returns:
a new list containing the referenced Label instances.

getLabelPredicate

public static com.google.common.base.Predicate<Label> getLabelPredicate(com.atlassian.user.User user,
                                                                        boolean hideSpecialLabels)

getLabelFilters

public static com.atlassian.core.util.filter.ListFilter getLabelFilters(com.atlassian.user.User user,
                                                                        boolean hideSpecialLabels)
returns only labels the user can see and also strips out special labels if 'hideSpecialLabels' flag is set


getLabelsFor

public static List<Label> getLabelsFor(String labels,
                                       LabelManager labelManager)


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