| /******************************************************************************** |
| * Copyright (c) 2015-2019 Contributors to the Eclipse Foundation |
| * |
| * See the NOTICE file(s) distributed with this work for additional |
| * information regarding copyright ownership. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| ********************************************************************************/ |
| |
| package org.eclipse.mdm.api.base.massdata; |
| |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| |
| /** |
| * This is an read request iterable for comfortable processing of subsequent |
| * {@link ReadRequest}s |
| * |
| * @since 1.0.0 |
| * @author Viktor Stoehr, Gigatronik Ingolstadt GmbH |
| * @author Sebastian Dirsch, Gigatronik Ingolstadt GmbH |
| */ |
| public final class ReadRequestIterable implements Iterable<ReadRequest>, Iterator<ReadRequest> { |
| |
| // ====================================================================== |
| // Instance variables |
| // ====================================================================== |
| |
| private ReadRequest readRequest; |
| private int count; |
| |
| // ====================================================================== |
| // Constructors |
| // ====================================================================== |
| |
| /** |
| * Constructor. |
| * |
| * @param readRequest The {@link ReadRequest}. |
| */ |
| ReadRequestIterable(ReadRequest readRequest) { |
| this.readRequest = readRequest; |
| } |
| |
| // ====================================================================== |
| // Public methods |
| // ====================================================================== |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean hasNext() { |
| return count == 0 || readRequest.hasNext(); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public ReadRequest next() { |
| if (hasNext()) { |
| readRequest = count == 0 ? readRequest : new ReadRequest(readRequest); |
| count++; |
| return readRequest; |
| } |
| |
| throw new NoSuchElementException("Subsequent read request is not available."); |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Iterator<ReadRequest> iterator() { |
| return this; |
| } |
| |
| } |