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ALF-21632 - FreeMarker API node.childByNamePath can be very slow git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@132431 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
125 lines
4.8 KiB
Java
125 lines
4.8 KiB
Java
/*
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* #%L
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* Alfresco Repository
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* %%
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* Copyright (C) 2005 - 2016 Alfresco Software Limited
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* %%
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* This file is part of the Alfresco software.
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* If the software was purchased under a paid Alfresco license, the terms of
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* the paid license agreement will prevail. Otherwise, the software is
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* provided under the following open source license terms:
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Alfresco is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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* #L%
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*/
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package org.alfresco.repo.template;
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import java.util.List;
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import java.util.StringTokenizer;
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import org.alfresco.repo.search.QueryParameterDefImpl;
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import org.alfresco.repo.security.authentication.AuthenticationUtil;
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import org.alfresco.repo.security.authentication.AuthenticationUtil.RunAsWork;
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import org.alfresco.service.ServiceRegistry;
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import org.alfresco.service.cmr.dictionary.DataTypeDefinition;
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import org.alfresco.service.cmr.repository.NodeRef;
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import org.alfresco.service.cmr.search.QueryParameterDefinition;
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import org.alfresco.service.cmr.security.AccessStatus;
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import org.alfresco.service.namespace.NamespaceService;
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import org.alfresco.service.namespace.QName;
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/**
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* A special Map that executes an XPath against the parent Node as part of the get()
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* Map interface implementation.
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*
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* @author Kevin Roast
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*/
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public class NamePathResultsMap extends BasePathResultsMap
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{
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/**
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* Constructor
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*
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* @param parent The parent TemplateNode to execute searches from
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* @param services The ServiceRegistry to use
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*/
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public NamePathResultsMap(TemplateNode parent, ServiceRegistry services)
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{
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super(parent, services);
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}
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/**
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* @see java.util.Map#get(java.lang.Object)
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*/
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public Object get(Object key)
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{
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String path = key.toString();
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final StringTokenizer t = new StringTokenizer(path, "/");
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// optimization
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if (this.services.getDictionaryService().isSubClass(parent.getType(), org.alfresco.model.ContentModel.TYPE_FOLDER))
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{
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NodeRef result = AuthenticationUtil.runAs(new RunAsWork<NodeRef>()
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{
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@Override
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public NodeRef doWork() throws Exception
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{
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NodeRef child = parent.nodeRef;
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while (t.hasMoreTokens() && child != null)
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{
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String name = t.nextToken();
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child = services.getNodeService().getChildByName(child, org.alfresco.model.ContentModel.ASSOC_CONTAINS, name);
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}
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return child;
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}
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}, AuthenticationUtil.getSystemUserName());
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// final node must be accessible to the user via the usual ACL permission checks
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if (result != null
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&& services.getPublicServiceAccessService().hasAccess("NodeService", "getProperties", result) != AccessStatus.ALLOWED)
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{
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result = null;
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}
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return (result != null ? new TemplateNode(result, this.services, this.parent.getImageResolver()) : null);
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}
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StringBuilder xpath = new StringBuilder(path.length() << 1);
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int count = 0;
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QueryParameterDefinition[] params = new QueryParameterDefinition[t.countTokens()];
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DataTypeDefinition ddText =
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this.services.getDictionaryService().getDataType(DataTypeDefinition.TEXT);
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NamespaceService ns = this.services.getNamespaceService();
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while (t.hasMoreTokens())
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{
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if (xpath.length() != 0)
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{
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xpath.append('/');
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}
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String strCount = Integer.toString(count);
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xpath.append("*[@cm:name=$cm:name")
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.append(strCount)
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.append(']');
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params[count++] = new QueryParameterDefImpl(
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QName.createQName(NamespaceService.CONTENT_MODEL_PREFIX, "name" + strCount, ns),
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ddText,
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true,
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t.nextToken());
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}
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List<TemplateNode> nodes = getChildrenByXPath(xpath.toString(), params, true);
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return (nodes.size() != 0) ? nodes.get(0) : null;
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}
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}
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