Java tutorial
/* * Copyright 2011 Esri. * * 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 com.esri.gpt.control.webharvest.client.waf; import com.esri.gpt.control.webharvest.IterationContext; import com.esri.gpt.framework.resource.api.Resource; import com.esri.gpt.framework.resource.query.Criteria; import com.esri.gpt.framework.util.Val; import java.util.Iterator; import org.apache.commons.net.ftp.FTPFile; /** * FTP file iterable. */ class FtpFileIterable implements Iterable<Resource> { protected IterationContext iterationContext; protected FtpClientRequest ftpClient; protected Criteria criteria; private FTPFile[] files; protected String folder; private Iterator<Resource> iterator; /** * Creates instance of the iterable. * @param iterationContext iteration context * @param url server url * @param folder folder */ public FtpFileIterable(IterationContext iterationContext, FtpClientRequest ftpClient, Criteria criteria, FTPFile[] files, String folder) { this.iterationContext = iterationContext; this.ftpClient = ftpClient; this.criteria = criteria; this.files = files != null ? files : new FTPFile[] {}; this.folder = Val.chkStr(folder); } @Override public Iterator<Resource> iterator() { if (iterator == null) { iterator = new FtpFileIterator(iterationContext, getFtpClient(), criteria, files, folder); } return iterator; } /** * Gets files. * @return files */ public final FTPFile[] getFiles() { return files; } /** * Gets request. * @return request */ public final FtpClientRequest getFtpClient() { return ftpClient; } }