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