import com.hp.hpl.jena.graph.query.BindingQueryPlan; //导入依赖的package包/类
public BindingQueryPlan prepareBindings(GraphQuery q, Node[] variables) {   
	this.variables = variables;
	this.indexes = new HashMap<Node,Integer>();
	for (int i = 0; i < variables.length; i++) {
		indexes.put(variables[i], new Integer(i));
	}
	BasicPattern pattern = new BasicPattern();
	for (Triple t: q.getPattern()) {
		pattern.add(t);
	}
	Plan plan = QueryEngineD2RQ.getFactory().create(new OpBGP(pattern), dataset, null, null);
	final ExtendedIterator<Domain> queryIterator = new Map1Iterator<Binding,Domain>(new BindingToDomain(), plan.iterator());
	return new BindingQueryPlan() {
		public ExtendedIterator<Domain> executeBindings() {
			return queryIterator;
		}
	};
}
 

import com.hp.hpl.jena.graph.query.BindingQueryPlan; //导入依赖的package包/类
public BindingQueryPlan prepareBindings(Query q, Node[] variables) {   
	this.variables = variables;
	this.indexes = new HashMap<Node,Integer>();
	for (int i = 0; i < variables.length; i++) {
		indexes.put(variables[i], new Integer(i));
	}
	BasicPattern pattern = new BasicPattern();
	for (Triple t: q.getPattern()) {
		pattern.add(t);
	}
	Plan plan = QueryEngineD2RQ.getFactory().create(new OpBGP(pattern), dataset, null, null);
	final ExtendedIterator<Domain> queryIterator = new Map1Iterator<Binding,Domain>(new BindingToDomain(), plan.iterator());
	return new BindingQueryPlan() {
		public ExtendedIterator<Domain> executeBindings() {
			return queryIterator;
		}
	};
}
 

import com.hp.hpl.jena.graph.query.BindingQueryPlan; //导入依赖的package包/类
/**
 * <p>Method that prepares the bindings for a query plan</p>
 * @param q - the input query
 * @param variables - the variables in the given query
 * @return a binding query plan
 * 
 * @see de.fuberlin.wiwiss.d2rq.D2RQQueryHandler#prepareBindings(Query, Node[])
 */
@SuppressWarnings("unchecked")
public BindingQueryPlan prepareBindings(Query q, Node[] variables) 
{   
	this.variables = variables;
	this.indexes = new HashMap();
	for (int i = 0; i < variables.length; i++) { indexes.put(variables[i], new Integer(i)); }
	BasicPattern pattern = new BasicPattern();
	Iterator it = q.getPattern().iterator();
	while (it.hasNext()) 
	{
		Triple t = (Triple) it.next();
		pattern.add(t);
	}
	Plan plan = QueryEngineD2RQ.getFactory().create(new OpBGP(pattern), dataset, null, null);
	final ExtendedIterator queryIterator = new Map1Iterator(new BindingToDomain(), plan.iterator());
	return new BindingQueryPlan() 
	{
		public ExtendedIterator executeBindings() { return queryIterator; }
	};
}
 

import com.hp.hpl.jena.graph.query.BindingQueryPlan; //导入依赖的package包/类
@Override
protected ExtendedIterator graphBaseFind(TripleMatch m) {
  int length = 0;
  Node s = m.getMatchSubject();
  Node p = m.getMatchPredicate();
  Node o = m.getMatchObject();

  if (s == null || s.equals(Node.ANY)) {
    s = Node.createVariable("s");
    length++;
  }
  if (p == null || p.equals(Node.ANY)) {
    p = Node.createVariable("p");
    length++;
  }
  if (o == null || o.equals(Node.ANY)) {
    o = Node.createVariable("o");
    length++;
  }

  // Check not already a variable.
      
  Node[] variables = new Node[length];
  int i = 0;
      
  if (s.isVariable()) variables[i++] = s;  
  if (p.isVariable()) variables[i++] = p;
  if (o.isVariable()) variables[i++] = o;
      
  Triple t = new Triple(s,p,o) ;
  com.hp.hpl.jena.graph.query.Query graphQuery = new com.hp.hpl.jena.graph.query.Query();
  graphQuery.addMatch(t);
  BindingQueryPlan plan = queryHandler().prepareBindings(graphQuery, variables);
  ExtendedIterator iter = plan.executeBindings(); // Of domains
  return new AnswerBindingIterator(iter, variables, t);
}
 

import com.hp.hpl.jena.graph.query.BindingQueryPlan; //导入依赖的package包/类
/**
 * <p>
 * Answer the iterator over the resources from the graph that satisfy the given
 * query, followed by the answers to the alternative queries (if specified). A
 * typical scenario is that the main query gets resources of a given class (say,
 * <code>rdfs:Class</code>), while the altQueries query for aliases for that
 * type (such as <code>daml:Class</code>).
 * </p>
 *
 * @param query A query to run against the model
 * @param altQueries An optional list of subsidiary queries to chain on to the first
 * @return ExtendedIterator An iterator over the (assumed single) results of
 * executing the queries.
 */
public <T extends RDFNode> ExtendedIterator<T> queryFor( BindingQueryPlan query, List<BindingQueryPlan> altQueries, Class<T> asKey );