FieldIterator.java

/*******************************************************************************
 * Copyright 2012 Pearson Education
 * 
 * Licensed 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.semantictools.jsonld.impl;

import java.util.Iterator;

import org.semantictools.jsonld.LdField;

public class FieldIterator implements Iterator<LdField> {

  protected FieldList list;
  protected LinkedLdField currentField;
  
  public FieldIterator(FieldList list) { 
    this.list = list;
    currentField = list.getFirstField();
  }
  
  @Override
  public boolean hasNext() {
    return currentField!=null;
  }
  
  @Override
  public LdField next() {
    
    LinkedLdField result = currentField;
    currentField = currentField.getNextField();
    return result;
  }

  @Override
  public void remove() {
    if (currentField != null) {
      list.remove(currentField);
    }
  }
  

}