dnet-core/dnet-information-service/src/main/java/eu/dnetlib/enabling/inspector/QueryController.java

80 lines
2.1 KiB
Java

package eu.dnetlib.enabling.inspector;
import java.util.Iterator;
import java.util.List;
import java.util.Spliterator;
import java.util.Spliterators;
import java.util.stream.Collectors;
import java.util.stream.StreamSupport;
import javax.annotation.Resource;
import eu.dnetlib.xml.database.XMLDatabase;
import org.apache.commons.lang3.StringEscapeUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.xmldb.api.base.XMLDBException;
/**
* This controller offers a simple way to run arbitrary queries on the xmldb.
*
* @author marko
*
*/
@Controller
public class QueryController extends AbstractInspectorController {
/**
* logger.
*/
private static final Log log = LogFactory.getLog(QueryController.class); // NOPMD by marko on 11/24/08 5:02 PM
/**
* xmldb.
*/
@Resource(name = "existDatabase")
private transient XMLDatabase xmlDatabase;
/**
* utility to parse resource ids and allows to navigate them.
*/
@Resource(name = "resourcelinkTool")
private ResourceLinkTool linkTool;
/**
* run a query.
*
* @param model
* mvc model
* @param query
* query (optional)
* @throws
*/
@RequestMapping(value = "/inspector/query.do")
void query(final Model model, @RequestParam(value = "query", required = false) final String query) {
if (query != null) {
log.info("running query: " + query);
try {
final Iterator<String> it = xmlDatabase.xquery(query);
final List<String> res = StreamSupport.stream(Spliterators.spliteratorUnknownSize(it, Spliterator.IMMUTABLE), false)
.map(StringEscapeUtils::escapeHtml4)
.map(linkTool::linkfyToHtml)
.collect(Collectors.toList());
model.addAttribute("size", res.size());
model.addAttribute("results", res);
} catch (XMLDBException e) {
model.addAttribute("message", "failed: " + e.getMessage());
}
}
model.addAttribute("query", query);
}
}