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ALF-10413 Blog GET webscripts can now correctly work in a R/O transaction

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git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@31186 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
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Nick Burch
2011-10-12 18:04:40 +00:00
parent 6ed3c43e4f
commit 8d41b70486
9 changed files with 16 additions and 229 deletions
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213
source/java/org/alfresco/repo/web/scripts/blogs/RequestUtilsLibJs.java
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/*
* Copyright (C) 2005-2011 Alfresco Software Limited.
*
* This file is part of Alfresco
*
* Alfresco is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Alfresco is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
*/
package org.alfresco.repo.web.scripts.blogs;
import java.util.Map;
import java.util.StringTokenizer;
import javax.servlet.http.HttpServletResponse;
import org.alfresco.model.ContentModel;
import org.alfresco.repo.jscript.ScriptNode;
import org.alfresco.repo.nodelocator.CompanyHomeNodeLocator;
import org.alfresco.repo.nodelocator.NodeLocatorService;
import org.alfresco.repo.nodelocator.SitesHomeNodeLocator;
import org.alfresco.repo.nodelocator.UserHomeNodeLocator;
import org.alfresco.repo.security.permissions.AccessDeniedException;
import org.alfresco.service.ServiceRegistry;
import org.alfresco.service.cmr.repository.NodeRef;
import org.alfresco.service.cmr.site.SiteInfo;
import org.alfresco.service.namespace.QName;
import org.springframework.extensions.webscripts.WebScriptException;
import org.springframework.extensions.webscripts.WebScriptRequest;
/**
* This class is a port of a previous JavaScript library.
*
* @author Neil Mc Erlean (based on previous JavaScript)
* @since 4.0
* @deprecated Not to be used/extended as this is likely to be refactored.
*/
public class RequestUtilsLibJs
{
//FIXME It will be refactored when the other services are ported from JavaScript to Java.
/**
* Gets the NodeRef requested based on the following templates:
*
* <pre>
* /api/blog/site/{site}/{container}/{path}/posts
* /api/blog/site/{site}/{container}/posts
* /api/blog/node/{store_type}/{store_id}/{id}/posts
* </pre>
*/
public static NodeRef getRequestNode(WebScriptRequest req, ServiceRegistry services)
{
NodeRef result = null;
Map<String, String> templateVars = req.getServiceMatch().getTemplateVars();
// If the template args contains a "store_type" then we we have a standard NodeRef URI template pattern
// check whether we got a node reference or a site related uri
final String storeType = templateVars.get("store_type");
final String site = templateVars.get("site");
if (storeType != null)
{
result = findFromReference(templateVars, services);
}
else if (site != null)
{
result = findNodeInSite(templateVars, services);
}
else
{
throw new WebScriptException(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "Unknown request parameters (webscript incorrectly configured?)");
}
if (!services.getNodeService().exists(result))
{
throw new WebScriptException(HttpServletResponse.SC_NOT_FOUND, "Unable to find node: " + result.toString());
}
return result;
}
private static NodeRef findFromReference(final Map<String, String> templateVars, ServiceRegistry services)
{
NodeRef result = null;
String nodeRefString = templateVars.get("store_type") + "://" + templateVars.get("store_id") + "/" + templateVars.get("id");
// These webscripts support some non-standard NodeRef URI constructions.
NodeLocatorService nodeLocatorService = services.getNodeLocatorService();
if (nodeRefString.equals("alfresco://company/home"))
{
result = nodeLocatorService.getNode(CompanyHomeNodeLocator.NAME, null, null);
}
else if (nodeRefString.equals("alfresco://user/home"))
{
result = nodeLocatorService.getNode(UserHomeNodeLocator.NAME, null, null);
}
else if (nodeRefString.equals("alfresco://sites/home"))
{
result = nodeLocatorService.getNode(SitesHomeNodeLocator.NAME, null, null);
}
else if (NodeRef.isNodeRef(nodeRefString))
{
result = new NodeRef(nodeRefString);
}
else
{
// result = new Nodesearch.findNode(nodeRef);
}
if (result == null)
{
throw new WebScriptException(HttpServletResponse.SC_NOT_FOUND, "Node " + nodeRefString + "does not exist");
}
return result;
}
/**
* Returns the node as specified by the given arguments.
*
* @param siteId the site for which a node is requested
* @param containerId the component to look in for the node.
* @param path a path to the node. Returns the root node in case path is null or ''
* return null in case no node can be found for the given path
* @return the node or a json error in case the node could not be fetched. Check with .
*/
private static NodeRef findNodeInSite(final Map<String, String> templateVars, ServiceRegistry services)
{
final String siteId = templateVars.get("site");
final String containerId = templateVars.get("container");
String path = templateVars.get("path");
if (path == null) path = "";
SiteInfo site = services.getSiteService().getSite(siteId);
if (site == null)
{
throw new WebScriptException(HttpServletResponse.SC_NOT_FOUND, "Site not found: '" + siteId + "'");
}
NodeRef node = services.getSiteService().getContainer(siteId, containerId);
if (node == null)
{
node = services.getSiteService().createContainer(siteId, containerId, null, null);
if (node == null)
{
throw new WebScriptException(HttpServletResponse.SC_NOT_FOUND, "Unable to fetch container '" + containerId + "' of site '" + siteId + "'. (No write permission?)");
}
}
// try to fetch the the path is there is any
if (path != null && !path.isEmpty())
{
node = childByNamePath(path, node, services);
if (node == null)
{
throw new WebScriptException(HttpServletResponse.SC_NOT_FOUND, "No node found for the given path: \"" + path + "\" in container " + containerId + " of site " + siteId);
}
}
return node;
}
/**
* Gets a descendant node by navigating a cm:name-based path e.g. /QA/Testing/Docs
*
* @see ScriptNode#childByNamePath(String)
*/
private static NodeRef childByNamePath(String path, NodeRef rootNode, ServiceRegistry services)
{
// This is based partially on ScriptNode.childByNamePath, but supports less path variations.
NodeRef result = null;
QName nodeType = services.getNodeService().getType(rootNode);
if (services.getDictionaryService().isSubClass(nodeType, ContentModel.TYPE_FOLDER))
{
/**
* The current node is a folder.
* optimized code path for cm:folder and sub-types supporting getChildrenByName() method
*/
StringTokenizer t = new StringTokenizer(path, "/");
if (t.hasMoreTokens())
{
result = rootNode;
while (t.hasMoreTokens() && result != null)
{
String name = t.nextToken();
try
{
result = services.getNodeService().getChildByName(result, ContentModel.ASSOC_CONTAINS, name);
}
catch (AccessDeniedException ade)
{
result = null;
}
}
}
}
return result;
}
}