/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH (http://www.alkacon.com)
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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.
*
* For further information about Alkacon Software GmbH, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.search.documents;
import org.opencms.file.CmsFile;
import org.opencms.file.CmsObject;
import org.opencms.file.CmsResource;
import org.opencms.file.types.I_CmsResourceType;
import org.opencms.main.CmsException;
import org.opencms.main.CmsLog;
import org.opencms.main.OpenCms;
import org.opencms.search.CmsIndexException;
import org.opencms.search.CmsSearchIndex;
import org.opencms.search.extractors.CmsExtractionResult;
import org.opencms.search.extractors.I_CmsExtractionResult;
import org.opencms.util.CmsStringUtil;
import org.opencms.xml.A_CmsXmlDocument;
import org.opencms.xml.containerpage.CmsContainerElementBean;
import org.opencms.xml.containerpage.CmsContainerPageBean;
import org.opencms.xml.containerpage.CmsFormatterConfiguration;
import org.opencms.xml.containerpage.CmsXmlContainerPage;
import org.opencms.xml.containerpage.CmsXmlContainerPageFactory;
import org.opencms.xml.content.CmsXmlContentFactory;
import org.opencms.xml.types.I_CmsXmlContentValue;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import org.apache.commons.logging.Log;
import org.apache.lucene.document.Document;
/**
* Lucene document factory class to extract index data from a resource
* of type <code>CmsResourceTypeContainerPage</code>.<p>
*
* @since 8.0
*/
public class CmsDocumentContainerPage extends A_CmsVfsDocument {
/** The log object for this class. */
private static final Log LOG = CmsLog.getLog(CmsDocumentContainerPage.class);
/**
* Creates a new instance of this lucene document factory.<p>
*
* @param name name of the document type
*/
public CmsDocumentContainerPage(String name) {
super(name);
}
/**
* Generates a new lucene document instance from contents of the given resource for the provided index.<p>
*
* For container pages, we must not cache based on the container page content age,
* since the content of the included elements may change any time.
*/
@Override
public Document createDocument(CmsObject cms, CmsResource resource, CmsSearchIndex index) throws CmsException {
// extract the content from the resource
I_CmsExtractionResult content = null;
if (index.isExtractingContent()) {
// do full text content extraction only if required
try {
content = extractContent(cms, resource, index);
} catch (Exception e) {
// text extraction failed for document - continue indexing meta information only
LOG.error(Messages.get().getBundle().key(Messages.ERR_TEXT_EXTRACTION_1, resource.getRootPath()), e);
}
}
// create the Lucene document according to the index field configuration
return index.getFieldConfiguration().createDocument(cms, resource, index, content);
}
/**
* Returns the raw text content of a VFS resource of type <code>CmsResourceTypeContainerPage</code>.<p>
*
* @see org.opencms.search.documents.I_CmsSearchExtractor#extractContent(CmsObject, CmsResource, CmsSearchIndex)
*/
public I_CmsExtractionResult extractContent(CmsObject cms, CmsResource resource, CmsSearchIndex index)
throws CmsException {
logContentExtraction(resource, index);
try {
CmsFile file = readFile(cms, resource);
CmsXmlContainerPage containerPage = CmsXmlContainerPageFactory.unmarshal(cms, file);
Locale locale = index.getLocaleForResource(cms, resource, containerPage.getLocales());
// initialize return values
StringBuffer content = new StringBuffer();
Map<String, String> items = new HashMap<String, String>();
CmsContainerPageBean containerBean = containerPage.getContainerPage(cms, locale);
for (CmsContainerElementBean element : containerBean.getElements()) {
// check all elements in this container
// get the formatter configuration for this element
element.initResource(cms);
I_CmsResourceType type = OpenCms.getResourceManager().getResourceType(element.getResource());
CmsFormatterConfiguration formatters = type.getFormattersForResource(cms, element.getResource());
if (formatters.isSearchContent(element.getFormatterId())) {
// the content of this element must be included for the container page
element.initResource(cms);
CmsFile elementFile = readFile(cms, element.getResource());
A_CmsXmlDocument elementContent = CmsXmlContentFactory.unmarshal(cms, elementFile);
List<String> elementNames = elementContent.getNames(locale);
for (String xpath : elementNames) {
// xpath will have the form "Text[1]" or "Nested[1]/Text[1]"
I_CmsXmlContentValue value = elementContent.getValue(xpath, locale);
if (value.getContentDefinition().getContentHandler().isSearchable(value)) {
// the content value is searchable
String extracted = value.getPlainText(cms);
if (CmsStringUtil.isNotEmptyOrWhitespaceOnly(extracted)) {
items.put(elementFile.getRootPath() + "/" + xpath, extracted);
content.append(extracted);
content.append('\n');
}
}
}
}
}
return new CmsExtractionResult(content.toString(), items);
} catch (Exception e) {
throw new CmsIndexException(
Messages.get().container(Messages.ERR_TEXT_EXTRACTION_1, resource.getRootPath()),
e);
}
}
/**
* @see org.opencms.search.documents.I_CmsDocumentFactory#isLocaleDependend()
*/
public boolean isLocaleDependend() {
return true;
}
/**
* @see org.opencms.search.documents.I_CmsDocumentFactory#isUsingCache()
*/
public boolean isUsingCache() {
return true;
}
}