net.ontopia.topicmaps.nav.context

Class ThemeCategorizer

java.lang.Object

net.ontopia.topicmaps.nav.context.ThemeCategorizer

public class ThemeCategorizer
extends Object

INTERNAL: Class for categorizing a collection of themes according to their theme class. The theme classes as well as the themes in each theme class could be sorted.

Field Summary

Fields

Modifier and Type	Field and Description
protected Comparator	lexicalComparator for sorting the theme class strings
protected static String	STRING_NO_CLASS representation of theme class for themes which belong to no type
protected Function<TopicIF,String>	stringifier Stringifier for theme class topics
protected Comparator	topicComparator for sorting the theme topics

Constructor Summary

Constructors

Constructor and Description
ThemeCategorizer(TopicMapIF tm, Collection context) empty constructor.

Method Summary

Modifier and Type	Method and Description
String	generateThemeList(HashMap themeClassMap, Collection selectedThemes, Function<String,String> stringifierThemeClass, Function<TopicIF,String> stringifierTheme, Function<TopicIF,String> stringifierSelectedTheme) Generate a ordered list of theme classes.
String	generateThemeList(HashMap themeClassMap, Collection selectedThemes, String templThemeClass, String templTheme, String templSelectedTheme) Generate a ordered list of theme classes.
String	generateThemeList(HashMap themeClassMap, Function<String,String> stringifierThemeClass, Function<TopicIF,String> stringifierTheme) Generate a ordered list of theme classes.
HashMap	getThemeClasses(Collection themes) process themes and generate HashMap which reflects theme categories.
Function<TopicIF,String>	getTopicStringifier() INTERNAL: Returns the internal stringifier used to stringify topics correctly in the current context.

Methods inherited from class java.lang.Object

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

Field Detail

STRING_NO_CLASS

protected static final String STRING_NO_CLASS

representation of theme class for themes which belong to no type

See Also:

Constant Field Values

stringifier

protected Function<TopicIF,String> stringifier

Stringifier for theme class topics

lexicalComparator

protected Comparator lexicalComparator

for sorting the theme class strings

topicComparator

protected Comparator topicComparator

for sorting the theme topics

Constructor Detail

ThemeCategorizer

public ThemeCategorizer(TopicMapIF tm,
                        Collection context)

empty constructor.

Method Detail

getTopicStringifier

public Function<TopicIF,String> getTopicStringifier()

INTERNAL: Returns the internal stringifier used to stringify topics correctly in the current context.

getThemeClasses

public HashMap getThemeClasses(Collection themes)

process themes and generate HashMap which reflects theme categories.

Returns:

HashMap which contains as keys Strings of the theme type that lead to HasSet objects. These store TopicIF objects for the themes.

generateThemeList

public String generateThemeList(HashMap themeClassMap,
                                Function<String,String> stringifierThemeClass,
                                Function<TopicIF,String> stringifierTheme)

Generate a ordered list of theme classes. Note: In every theme class there are at least one theme.

generateThemeList

public String generateThemeList(HashMap themeClassMap,
                                Collection selectedThemes,
                                Function<String,String> stringifierThemeClass,
                                Function<TopicIF,String> stringifierTheme,
                                Function<TopicIF,String> stringifierSelectedTheme)

Generate a ordered list of theme classes. The themes which are found in the collection of selectedThemes use their own stringifier stringifierSelectedTheme. Note: In every theme class there are at least one theme.

generateThemeList

public String generateThemeList(HashMap themeClassMap,
                                Collection selectedThemes,
                                String templThemeClass,
                                String templTheme,
                                String templSelectedTheme)

Generate a ordered list of theme classes. Use template strings to render result string, this approach is used by the navigator framework 2nd generation. Note: In every theme class there are at least one theme.