| /** |
| * 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.camel.component.cmis; |
| |
| import java.io.InputStream; |
| import java.util.Map; |
| |
| import org.apache.chemistry.opencmis.client.api.CmisObject; |
| import org.apache.chemistry.opencmis.client.api.Document; |
| import org.apache.chemistry.opencmis.client.api.Folder; |
| import org.apache.chemistry.opencmis.client.api.ItemIterable; |
| import org.apache.chemistry.opencmis.client.api.OperationContext; |
| import org.apache.chemistry.opencmis.commons.data.ContentStream; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| public class RecursiveTreeWalker { |
| private static final Logger LOG = LoggerFactory.getLogger(RecursiveTreeWalker.class); |
| |
| private final CMISConsumer cmisConsumer; |
| private final boolean readContent; |
| private final int readCount; |
| private final int pageSize; |
| private int totalPolled; |
| |
| public RecursiveTreeWalker(CMISConsumer cmisConsumer, boolean readContent, int readCount, int pageSize) { |
| this.cmisConsumer = cmisConsumer; |
| this.readContent = readContent; |
| this.readCount = readCount; |
| this.pageSize = pageSize; |
| } |
| |
| int processFolderRecursively(Folder folder) throws Exception { |
| processFolderNode(folder); |
| |
| |
| OperationContext operationContext = cmisConsumer.createOperationContext(); |
| operationContext.setMaxItemsPerPage(pageSize); |
| |
| int count = 0; |
| int pageNumber = 0; |
| boolean finished = false; |
| ItemIterable<CmisObject> itemIterable = folder.getChildren(operationContext); |
| while (!finished) { |
| ItemIterable<CmisObject> currentPage = itemIterable.skipTo(count).getPage(); |
| LOG.debug("Processing page {}", pageNumber); |
| for (CmisObject child : currentPage) { |
| if (CMISHelper.isFolder(child)) { |
| Folder childFolder = (Folder)child; |
| processFolderRecursively(childFolder); |
| } else { |
| processNonFolderNode(child, folder); |
| } |
| |
| count++; |
| if (totalPolled == readCount) { |
| finished = true; |
| break; |
| } |
| } |
| pageNumber++; |
| if (!currentPage.getHasMoreItems()) { |
| finished = true; |
| } |
| } |
| |
| return totalPolled; |
| } |
| |
| private void processNonFolderNode(CmisObject cmisObject, Folder parentFolder) throws Exception { |
| InputStream inputStream = null; |
| Map<String, Object> properties = CMISHelper.objectProperties(cmisObject); |
| properties.put(CamelCMISConstants.CMIS_FOLDER_PATH, parentFolder.getPath()); |
| if (CMISHelper.isDocument(cmisObject) && readContent) { |
| ContentStream contentStream = ((Document)cmisObject).getContentStream(); |
| if (contentStream != null) { |
| inputStream = contentStream.getStream(); |
| } |
| } |
| sendNode(properties, inputStream); |
| } |
| |
| private void processFolderNode(Folder folder) throws Exception { |
| sendNode(CMISHelper.objectProperties(folder), null); |
| } |
| |
| private void sendNode(Map<String, Object> properties, InputStream inputStream) throws Exception { |
| totalPolled += cmisConsumer.sendExchangeWithPropsAndBody(properties, inputStream); |
| } |
| } |