计算机科学论坛--[求助]Jena2.5.2中使用OntModelSpec.OWL_MEM_RULE

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OntModelSpec spec = new OntModelSpec(OntModelSpec.OWL_MEM_RULE_INF);
ontModel = ModelFactory.createOntologyModel(spec, model);

Iterator iter = ontModel.listHierarchyRootClasses();
while(iter.hasNext())
System.out.println(((OntClass)iter.next()).getLocalName());

这段代码中，为什么我用OntModelSpec.OWL_MEM就好好的，用OntModelSpec.OWL_MEM_RULE_INF的时候运行到while(iter.hasNext())就停住了？
程序只是停住了，没有结束，没有任何错误提示，这是为什么呢？
如果我不用listHierarchyRootClasses()的话，用listClasses()却是好好的？

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请楼主把完整的程序和owl文件帖出来看看

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完整的代码：

import java.io.FileInputStream;
import java.io.FileNotFoundException;

import com.hp.hpl.jena.ontology.OntClass;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.ontology.OntModelSpec;
import com.hp.hpl.jena.rdf.model.Model;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.rdf.model.ModelMaker;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;

public class OntModelTest2
{
public OntModelTest2()
{
  String url = "D://pizza.owl";

  OntModelSpec spec = new OntModelSpec(OntModelSpec.OWL_MEM_RULE_INF);
  ModelMaker make = ModelFactory.createMemModelMaker();
  Model model = make.createModel("pizza");
  try {
   FileInputStream in = new FileInputStream(url);
   model.read(in,null);
  } catch (FileNotFoundException e) {
   e.printStackTrace();
  }
  OntModel ontModel = ModelFactory.createOntologyModel(spec, model);

  ExtendedIterator iter = ontModel.listHierarchyRootClasses();
  while(iter.hasNext())
   System.out.println(((OntClass)iter.next()).getLocalName());
}

public static void main(String args[])
{
  new OntModelTest2();
}
}

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OWL文件就是自带的那个pizza例子

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程序没什么问题，
我这边也做了测试：
package jena.jena.w3chinabbs.listhierarchyrootclasses;

import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.test.AbstractDependencyInjectionSpringContextTests;

import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.util.iterator.ExtendedIterator;

/**
* for: http://www.xml.org.cn/dispbbs.asp?boardID=2&ID=47717
* @author jpz6311whu
*
*/
public class TestHierarchy extends
  AbstractDependencyInjectionSpringContextTests {

    @Override
    protected ConfigurableApplicationContext loadContext(Object key) throws Exception {
        setAutowireMode(AUTOWIRE_BY_NAME);
        return super.loadContext(key);

  }
private ExtendedIterator extendedIterator;

// public void setExtendedIterator(ExtendedIterator extendedIterator) {
// this.extendedIterator = extendedIterator;
// }

private OntModel ontModel;

public void setOntModel(OntModel ontModel) {
  this.ontModel = ontModel;
}

protected String[] getConfigLocations() {
  return new String[] { "file:applicationContext.xml" };
}
public void testHierarchy() {
  System.out.println("start testing...");
  extendedIterator =ontModel.listHierarchyRootClasses();
  System.out.println("after listing...");
  AbstractDependencyInjectionSpringContextTests.assertNotNull(extendedIterator);
  System.out.println("start hasNext...");
  AbstractDependencyInjectionSpringContextTests.assertTrue(extendedIterator.hasNext());
  System.out.println("after hasNext...");
  int i=0;
  System.out.println("start iterating...");
  while(extendedIterator.hasNext()){

   i++;
   System.out.println(i);
   extendedIterator.next();
  }
  System.out.println(i);
  assertTrue(i>0);
}
}
结果如下：
INFO [main] (AbstractSingleSpringContextTests.java:180) - Loading context for: file:applicationContext.xml
INFO [main] (CollectionFactory.java:73) - JDK 1.4+ collections available
INFO [main] (XmlBeanDefinitionReader.java:330) - Loading XML bean definitions from URL [file:applicationContext.xml]
INFO [main] (AbstractRefreshableApplicationContext.java:100) - Bean factory for application context [org.springframework.context.support.ClassPathXmlApplicationContext;hashCode=9516880]: org.springframework.beans.factory.support.DefaultListableBeanFactory defining beans [ontModel,emptyOntModel]; root of BeanFactory hierarchy
INFO [main] (AbstractApplicationContext.java:322) - 2 beans defined in application context [org.springframework.context.support.ClassPathXmlApplicationContext;hashCode=9516880]
INFO [main] (AbstractApplicationContext.java:473) - Unable to locate MessageSource with name 'messageSource': using default [org.springframework.context.support.DelegatingMessageSource@1d6776d]
INFO [main] (AbstractApplicationContext.java:495) - Unable to locate ApplicationEventMulticaster with name 'applicationEventMulticaster': using default [org.springframework.context.event.SimpleApplicationEventMulticaster@1db7df8]
INFO [main] (DefaultListableBeanFactory.java:261) - Pre-instantiating singletons in factory [org.springframework.beans.factory.support.DefaultListableBeanFactory defining beans [ontModel,emptyOntModel]; root of BeanFactory hierarchy]
start testing...
after listing...
start hasNext...

很明显，问题在这里：
AbstractDependencyInjectionSpringContextTests.assertTrue(extendedIterator.hasNext());的时候CPU是满负荷运行，说明这句始终在运行没有很快结束

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谢谢jpz6311whu！！！！

可是程序一直都没有结束呀，这也是个问题。。。


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