com.jalios.jcms.comparator

Class BasicComparator<T extends Storable>

java.lang.Object

com.jalios.jstore.BasicStorable.CdateComparator<T>

com.jalios.jcms.comparator.BasicComparator<T>

Type Parameters:

T - specialization of Storable

All Implemented Interfaces:

java.util.Comparator<T>

Direct Known Subclasses:

Category.NameComparator, Data.DataNameComparator, Group.NameComparator, Publication.TitleComparator, Publication.WorkspaceComparator, QueryResultSet.ScoreComparator, Workspace.NameComparator

public class BasicComparator<T extends Storable>
extends BasicStorable.CdateComparator<T>

Basic comparator class providing advanced contextual informations and default comparison of Storable using their cdate.

The following fields are available to your implementation :

• Channel channel : the Channel
• JcmsContext jcmsContext : the current JcmsContext if available
• String language : current user language or default channel language.
• Locale locale : current user Locale or default channel Locale.
• Map contextMap : a Map containing contextual information received through ComparatorManager.getComparator(Class, String, boolean, Map).

Example :

 // Sorts Article by alphabetical order of their "intro" field, using current language.
 // Declare this comparator using the following property : 
 // comparator.Article.articleintro: com.example.jcms.comparator.MyArticleIntroComparator
 public class MyArticleIntroComparator extends BasicComparator<Article> {
 
   public int compare(Article p1, Article p2) {
     // object nullity check
     if (p1 == null) {
       return (p2 == null) ? 0 : -1;
     }
     if (p2 == null) {
      return 1;
     }

     // Retrieve Article introduction
     String t1 = p1.getIntro(language);
     String t2 = p2.getIntro(language);
     if (t1 == null) {
      return (t2 == null) ? 0 : -1;
     }
     if (t2 == null) {
       return 1;
     }

     t1 = Util.unaccentuate(t1);
     t2 = Util.unaccentuate(t2);

     int res = t1.compareToIgnoreCase(t2);
     if (res != 0) {
       return res;
     }
     return super.compare(p1, p2);
   }
 }
 

Field Summary

Fields

Modifier and Type	Field and Description
protected Channel	channel The Channel.
protected java.util.Map<java.lang.String,java.lang.Object>	contextMap Contextual information map, retrieved through ComparatorManager.getComparator(Class, String, boolean, Map).
protected JcmsContext	jcmsContext The current JcmsContext, if available.
protected java.lang.String	language Current user language or default channel language.
protected java.util.Locale	locale Current user Locale or default channel Locale.

Constructor Summary

Constructors

Constructor and Description
BasicComparator()

Method Summary

Methods inherited from class com.jalios.jstore.BasicStorable.CdateComparator

compare, compareDate

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

channel

protected final Channel channel

The Channel.

Never null.

jcmsContext

protected final JcmsContext jcmsContext

The current JcmsContext, if available.

Might be null.

language

protected final java.lang.String language

Current user language or default channel language.

Never null.

locale

protected final java.util.Locale locale

Current user Locale or default channel Locale.

Never null.

contextMap

protected final java.util.Map<java.lang.String,java.lang.Object> contextMap

Contextual information map, retrieved through ComparatorManager.getComparator(Class, String, boolean, Map).

Never null.

Constructor Detail

BasicComparator

public BasicComparator()