/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.jena.sparql.modify;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;

import org.apache.jena.graph.Node ;

public class UsingList
{
    public UsingList() { }
    
    private List<Node> using = new ArrayList<>() ;
    private List<Node> usingNamed = new ArrayList<>() ;
    
    public void addUsing(Node node)                      { using.add(node) ; }
    public void addAllUsing(Collection<Node> nodes)      { using.addAll(nodes); }
    public void addUsingNamed(Node node)                 { usingNamed.add(node) ; }
    public void addAllUsingNamed(Collection<Node> nodes) { usingNamed.addAll(nodes); }
    
    public List<Node> getUsing()                         { return Collections.unmodifiableList(using) ; }
    public List<Node> getUsingNamed()                    { return Collections.unmodifiableList(usingNamed) ; }
    
    public boolean usingIsPresent()                      { return using.size() > 0 || usingNamed.size() > 0 ; }
}