BaseName (query directive)

Description

Gets the base name of the active column value of input. Returns null if the input doesn't have a base name.

Constructor

BaseName()

Examples

Following example gets the base names of the instances of the input topic.

importPackage(org.wandora.query2);
new BaseName().from(new Instances())

Following example gets the base name of content type topic.

importPackage(org.wandora.query2);
new BaseName().from("http://www.wandora.org/core/contenttype")

Following example finds all topics in the topic map which do not have a base name.

importPackage(org.wandora.query2);
new BaseName().from(new AllTopics().as("#topic"))
.where("#DEFAULT","=",null)

Following example gets the base name of the input topic or the first subject identifier if it doesn't have a base name.

importPackage(org.wandora.query2);
new If(
  new BaseName().where("#DEFAULT","!=",null),
  new BaseName(),
  new First(new SubjectIdentifiers())
)