//=============================================================================
//=== Copyright (C) 2001-2007 Food and Agriculture Organization of the
//=== United Nations (FAO-UN), United Nations World Food Programme (WFP)
//=== and United Nations Environment Programme (UNEP)
//===
//=== This program is free software; you can redistribute it and/or modify
//=== it under the terms of the GNU General Public License as published by
//=== the Free Software Foundation; either version 2 of the License, or (at
//=== your option) any later version.
//===
//=== This program 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
//=== General Public License for more details.
//===
//=== You should have received a copy of the GNU General Public License
//=== along with this program; if not, write to the Free Software
//=== Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
//===
//=== Contact: Jeroen Ticheler - FAO - Viale delle Terme di Caracalla 2,
//=== Rome - Italy. email: geonetwork@osgeo.org
//==============================================================================
package org.fao.geonet.kernel.oaipmh.services;
import jeeves.server.context.ServiceContext;
import org.fao.geonet.kernel.setting.SettingManager;
import org.fao.geonet.utils.Xml;
import org.fao.geonet.GeonetContext;
import org.fao.geonet.constants.Geonet;
import org.fao.geonet.domain.ISODate;
import org.fao.geonet.domain.Metadata;
import org.fao.geonet.domain.MetadataCategory;
import org.fao.geonet.domain.MetadataDataInfo;
import org.fao.geonet.kernel.DataManager;
import org.fao.geonet.kernel.SchemaManager;
import org.fao.geonet.kernel.oaipmh.Lib;
import org.fao.geonet.kernel.oaipmh.OaiPmhService;
import org.fao.geonet.repository.MetadataRepository;
import org.fao.oaipmh.exceptions.CannotDisseminateFormatException;
import org.fao.oaipmh.exceptions.IdDoesNotExistException;
import org.fao.oaipmh.requests.AbstractRequest;
import org.fao.oaipmh.requests.GetRecordRequest;
import org.fao.oaipmh.responses.AbstractResponse;
import org.fao.oaipmh.responses.GetRecordResponse;
import org.fao.oaipmh.responses.Header;
import org.fao.oaipmh.responses.Record;
import org.jdom.Attribute;
import org.jdom.Element;
import org.springframework.data.jpa.domain.Specification;
import static org.fao.geonet.repository.specification.MetadataSpecs.hasMetadataUuid;
//=============================================================================
public class GetRecord implements OaiPmhService {
public String getVerb() {
return GetRecordRequest.VERB;
}
//---------------------------------------------------------------------------
//---
//--- Service
//---
//---------------------------------------------------------------------------
public AbstractResponse execute(AbstractRequest request, ServiceContext context) throws Exception {
GetRecordRequest req = (GetRecordRequest) request;
GetRecordResponse res = new GetRecordResponse();
String uuid = req.getIdentifier();
String prefix = req.getMetadataPrefix();
res.setRecord(buildRecord(context, uuid, prefix));
return res;
}
//---------------------------------------------------------------------------
private Record buildRecord(ServiceContext context, String uuid, String prefix) throws Exception {
return buildRecordStat(context, hasMetadataUuid(uuid), prefix);
}
//---------------------------------------------------------------------------
// function builds a OAI records from a metadata record, according to the arguments select and selectVal
public static Record buildRecordStat(ServiceContext context, Specification<Metadata> spec/*String select, Object selectVal*/,
String prefix) throws Exception {
GeonetContext gc = (GeonetContext) context.getHandlerContext(Geonet.CONTEXT_NAME);
SchemaManager sm = gc.getBean(SchemaManager.class);
Metadata metadata = context.getBean(MetadataRepository.class).findOne(spec);
if (metadata == null)
throw new IdDoesNotExistException(spec.toString());
String uuid = metadata.getUuid();
final MetadataDataInfo dataInfo = metadata.getDataInfo();
String schema = dataInfo.getSchemaId();
String changeDate = dataInfo.getChangeDate().getDateAndTime();
String data = metadata.getData();
Element md = Xml.loadString(data, false);
//--- try to disseminate format
if (prefix.equals(schema)) {
Attribute schemaLocAtt = sm.getSchemaLocation(schema, context);
if (schemaLocAtt != null) {
if (md.getAttribute(schemaLocAtt.getName(), schemaLocAtt.getNamespace()) == null) {
md.setAttribute(schemaLocAtt);
// make sure namespace declaration for schemalocation is present -
// remove it first (does nothing if not there) then add it
md.removeNamespaceDeclaration(schemaLocAtt.getNamespace());
md.addNamespaceDeclaration(schemaLocAtt.getNamespace());
}
}
} else {
String schemaDir = sm.getSchemaDir(schema);
if (Lib.existsConverter(schemaDir, prefix)) {
final String siteURL = context.getBean(SettingManager.class).getSiteURL(context);
Element env = Lib.prepareTransformEnv(uuid, changeDate, context.getBaseUrl(), siteURL, gc.getBean(SettingManager.class)
.getSiteName());
md = Lib.transform(schemaDir, env, md, prefix + ".xsl");
} else {
throw new CannotDisseminateFormatException("Unknown prefix : " + prefix);
}
}
//--- build header and set some infos
Header h = new Header();
h.setIdentifier(uuid);
h.setDateStamp(new ISODate(changeDate));
for (MetadataCategory metadataCategory : metadata.getCategories()) {
h.addSet(metadataCategory.getName());
}
//--- build and return record
Record r = new Record();
r.setHeader(h);
r.setMetadata(md);
return r;
}
}
//=============================================================================