| /* |
| * 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.drill.exec.store.easy.json.loader; |
| |
| import java.util.Iterator; |
| |
| /** |
| * It allows setting the current value in the iterator and can be used once after {@link #next} call |
| * |
| * @param <T> type of the value |
| */ |
| public class SingleElementIterator<T> implements Iterator<T> { |
| private T value; |
| |
| @Override |
| public boolean hasNext() { |
| return value != null; |
| } |
| |
| @Override |
| public T next() { |
| T value = this.value; |
| this.value = null; |
| return value; |
| } |
| |
| public void setValue(T value) { |
| this.value = value; |
| } |
| } |