com.ibm.workplace.wcm.api.query
Class Disjunction

java.lang.Object
  com.ibm.workplace.wcm.api.query.CompoundSelector
      com.ibm.workplace.wcm.api.query.Association
          com.ibm.workplace.wcm.api.query.Disjunction

All Implemented Interfaces:

QueryElement, Selector, java.io.Serializable

public final class Disjunction
extends Association

Disjunction associates Selectors together with Operator.OR. Here is an example of how to use create a query with 'AND' and 'OR' conditions by using Conjunction and Disjunction. The example will process all content whose name starts with 'news', or whose name starts with 'article' and has a keyword 'news'.

  QueryService queryService = workspace.getQueryService();
  Query query = queryService.createQuery(Content.class);
  Disjunction or = new Disjunction();
  or.add(Selectors.nameLike("news%"));
  Conjunction and = new Conjunction();
  and.add(Selectors.nameLike("article%"));
  and.add(ProfileSelectors.keywordsContain("news"));
  or.add(and);
  query.addSelector(or);
  try
  {
     ResultIterator resultIterator = queryService.execute(query);
     while (resultIterator.hasNext())
     {
        Content childContent = (Content) resultIterator.next();
        if (childContent.hasComponent("myElement"))
        {
           contentWithMyElement = childContent;
           break;
        }
     }
  }
  catch (QueryServiceException e)
  {
     // Handle exception
  } 
 

Since:

7.0

See Also:

Serialized Form

Field Summary

Fields inherited from interface com.ibm.workplace.wcm.api.query.Selector

NULL_SELECTOR

Constructor Summary

Disjunction()
Constructor

Disjunction(java.util.Collection<Selector> selectors)
Constructor

Method Summary

void	add(Selector selector) Adds a selector

Methods inherited from class com.ibm.workplace.wcm.api.query.Association

add, add, createAssociation, getOperator, getSelectors, toString

Methods inherited from class com.ibm.workplace.wcm.api.query.CompoundSelector

getElements, hasElements

Methods inherited from class java.lang.Object

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

Constructor Detail

Disjunction

public Disjunction()

Constructor

Disjunction

public Disjunction(java.util.Collection<Selector> selectors)

Constructor

Parameters:

selectors - associated selectors

Method Detail

add

public void add(Selector selector)

Adds a selector

Overrides:

add in class Association

Parameters:

selector - the selector to add