| /* |
| * 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.sling.pipes.internal; |
| |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.sling.api.resource.PersistenceException; |
| import org.apache.sling.api.resource.Resource; |
| import org.apache.sling.api.resource.ResourceUtil; |
| import org.apache.sling.pipes.BasePipe; |
| import org.apache.sling.pipes.PipeBindings; |
| import org.apache.sling.pipes.Plumber; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import javax.jcr.Node; |
| import javax.jcr.RepositoryException; |
| import javax.jcr.Session; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.StringTokenizer; |
| |
| import static org.apache.sling.jcr.resource.JcrResourceConstants.NT_SLING_FOLDER; |
| |
| /** |
| * creates or get given expression's path and returns corresponding resource |
| * this pipe can be configured with the following properties: |
| * <ul> |
| * <li><code>nodeType</code> resource type with which the leaf node of the created path will be created</li> |
| * <li><code>intermediateType</code> resource type with which intermediate nodse of the created path will be created</li> |
| * <li><code>autosave</code> flag indicating wether this pipe should triggers a commit at the end of the execution</li> |
| * </ul> |
| */ |
| public class PathPipe extends BasePipe { |
| |
| public static final String RESOURCE_TYPE = RT_PREFIX + "path"; |
| public static final String PN_RESOURCETYPE = "resourceType"; |
| public static final String PN_NODETYPE = "nodeType"; |
| public static final String PN_INTERMEDIATE = "intermediateType"; |
| public static final String PN_AUTOSAVE = "autosave"; |
| |
| String resourceType; |
| String nodeType; |
| String intermediateType; |
| boolean autosave; |
| boolean jcr; |
| |
| private final Logger logger = LoggerFactory.getLogger(PathPipe.class); |
| |
| public PathPipe(Plumber plumber, Resource resource, PipeBindings upperBindings) throws Exception { |
| super(plumber, resource, upperBindings); |
| nodeType = properties.get(PN_NODETYPE, String.class); |
| resourceType = properties.get(PN_RESOURCETYPE, NT_SLING_FOLDER); |
| jcr = StringUtils.isNotBlank(nodeType); |
| intermediateType = properties.get(PN_INTERMEDIATE, resourceType); |
| autosave = properties.get(PN_AUTOSAVE, false); |
| } |
| |
| @Override |
| public boolean modifiesContent() { |
| return true; |
| } |
| |
| @Override |
| protected Iterator<Resource> computeOutput() throws Exception { |
| Iterator<Resource> output = Collections.emptyIterator(); |
| String expr = getExpr(); |
| try { |
| String path = isRootPath(expr) ? expr : getInput().getPath() + SLASH + expr; |
| logger.info("creating path {}", path); |
| if (!isDryRun()) { |
| Resource resource = jcr ? getOrCreateNode(path) : ResourceUtil.getOrCreateResource(resolver, path, resourceType, intermediateType, autosave); |
| output = Collections.singleton(resource).iterator(); |
| } |
| } catch (PersistenceException e){ |
| logger.error ("Not able to create path {}", expr, e); |
| } |
| return output; |
| } |
| |
| /** |
| * get or create JCR path, using pipe members |
| * @param path path to create |
| * @return resource corresponding to the created leaf |
| * @throws RepositoryException in case something went wrong with jcr creation |
| */ |
| protected Resource getOrCreateNode(String path) throws RepositoryException { |
| Node leaf = null; |
| boolean transientChange = false; |
| String relativePath = path.substring(1); |
| Node parentNode = resolver.adaptTo(Session.class).getRootNode(); |
| if (!parentNode.hasNode(relativePath)) { |
| Node node = parentNode; |
| int pos = relativePath.lastIndexOf('/'); |
| if (pos != -1) { |
| final StringTokenizer st = new StringTokenizer(relativePath.substring(0, pos), "/"); |
| while (st.hasMoreTokens()) { |
| final String token = st.nextToken(); |
| if (!node.hasNode(token)) { |
| try { |
| node.addNode(token, intermediateType); |
| transientChange = true; |
| } catch (RepositoryException re) { |
| // we ignore this as this folder might be created from a different task |
| node.getSession().refresh(false); |
| } |
| } |
| node = node.getNode(token); |
| } |
| relativePath = relativePath.substring(pos + 1); |
| } |
| if (!node.hasNode(relativePath)) { |
| node.addNode(relativePath, nodeType); |
| transientChange = true; |
| } |
| leaf = node.getNode(relativePath); |
| } |
| if (leaf == null) { |
| leaf = parentNode.getNode(relativePath); |
| } |
| if (transientChange && autosave) { |
| resolver.adaptTo(Session.class).save(); |
| } |
| return resolver.getResource(leaf.getPath()); |
| } |
| } |