Package org.olat.search.service.indexer.repository.course

Source Code of org.olat.search.service.indexer.repository.course.WikiCourseNodeIndexer

/**
* OLAT - Online Learning and Training<br>
* http://www.olat.org
* <p>
* Licensed under the Apache License, Version 2.0 (the "License"); <br>
* you may not use this file except in compliance with the License.<br>
* You may obtain a copy of the License at
* <p>
* http://www.apache.org/licenses/LICENSE-2.0
* <p>
* Unless required by applicable law or agreed to in writing,<br>
* software distributed under the License is distributed on an "AS IS" BASIS, <br>
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. <br>
* See the License for the specific language governing permissions and <br>
* limitations under the License.
* <p>
* Copyright (c) since 2004 at Multimedia- & E-Learning Services (MELS),<br>
* University of Zurich, Switzerland.
* <p>
*/

package org.olat.search.service.indexer.repository.course;

import java.io.IOException;
import java.util.List;

import org.apache.lucene.document.Document;
import org.olat.core.id.Identity;
import org.olat.core.id.Roles;
import org.olat.core.id.context.BusinessControl;
import org.olat.core.id.context.ContextEntry;
import org.olat.core.logging.OLog;
import org.olat.core.logging.Tracing;
import org.olat.course.ICourse;
import org.olat.course.nodes.CourseNode;
import org.olat.modules.wiki.Wiki;
import org.olat.modules.wiki.WikiManager;
import org.olat.modules.wiki.WikiPage;
import org.olat.repository.RepositoryEntry;
import org.olat.search.service.SearchResourceContext;
import org.olat.search.service.document.WikiPageDocument;
import org.olat.search.service.indexer.FolderIndexer;
import org.olat.search.service.indexer.OlatFullIndexer;
import org.olat.search.service.indexer.repository.CourseIndexer;

/**
* Indexer for Wiki course-node.
* @author Christian Guretzki
*/
public class WikiCourseNodeIndexer extends FolderIndexer implements CourseNodeIndexer {
  private static final OLog log = Tracing.createLoggerFor(WikiCourseNodeIndexer.class);

  // Must correspond with LocalString_xx.properties
  // Do not use '_' because we want to search for certain documenttype and lucene have problems with '_'
  public final static String TYPE = "type.course.node.wiki";

  private final static String SUPPORTED_TYPE_NAME = "org.olat.course.nodes.WikiCourseNode";

  private CourseIndexer courseNodeIndexer;
 
 
  public WikiCourseNodeIndexer() {
    courseNodeIndexer = new CourseIndexer();
  }
 
  public void doIndex(SearchResourceContext repositoryResourceContext, ICourse course, CourseNode courseNode, OlatFullIndexer indexWriter) {
    if (log.isDebug()) log.debug("Index wiki...");
    String repoEntryName = "*name not available*";
    try {
      RepositoryEntry repositoryEntry = courseNode.getReferencedRepositoryEntry();
      repoEntryName = repositoryEntry.getDisplayname();
      Wiki wiki = WikiManager.getInstance().getOrLoadWiki(courseNode.getReferencedRepositoryEntry().getOlatResource());
      // loop over all wiki pages
      List<WikiPage> wikiPageList = wiki.getAllPagesWithContent();
      for (WikiPage wikiPage : wikiPageList) {
        try {
          SearchResourceContext courseNodeResourceContext = new SearchResourceContext(repositoryResourceContext);
          courseNodeResourceContext.setBusinessControlFor(courseNode);
          courseNodeResourceContext.setDocumentType(TYPE);
          courseNodeResourceContext.setDocumentContext(course.getResourceableId() + " " + courseNode.getIdent());
          courseNodeResourceContext.setFilePath(wikiPage.getPageName());

          Document document = WikiPageDocument.createDocument(courseNodeResourceContext, wikiPage);
          indexWriter.addDocument(document);
        } catch (Exception e) {
          log.error("Error indexing wiki page:" + (wikiPage == null ? "null" : wikiPage.getPageName()), e);
        }
      }
    } catch (Exception e) {
      log.error("Error indexing wiki:" + repoEntryName, e);
    }

    // go further, index my child nodes
    try {
      courseNodeIndexer.doIndexCourse(repositoryResourceContext, course, courseNode, indexWriter);
    } catch (Exception e) {
      log.error("Error indexing child of courseNode=" + courseNode, e);
    }
  }

  public String getSupportedTypeName() {
    return SUPPORTED_TYPE_NAME;
  }

  public boolean checkAccess(ContextEntry contextEntry, BusinessControl businessControl, Identity identity, Roles roles) {
    return true;
  }
 
}
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