Metacat

import java.util.ArrayList;

import org.apache.solr.common.SolrDocumentList;

import org.apache.solr.schema.IndexSchema;

import org.apache.solr.servlet.SolrRequestParsers;

import org.dataone.service.exceptions.NotImplemented;

import org.dataone.service.types.v1.Identifier;

import edu.ucsb.nceas.metacat.common.query.SolrQueryResponseTransformer;

    /**

     * If there is a solr doc for the given id.

     * @param id - the specified id.

     * @return true if there is a solr doc for this id.

     */

    public boolean hasSolrDoc(Identifier id) throws ParserConfigurationException, SolrServerException, IOException, SAXException{

    	boolean hasIt = false;

    	if(id != null && id.getValue() != null && !id.getValue().trim().equals("") ) {

    		SolrParams query = buildIdQuery(id.getValue());

    		coreContainer.reload(collectionName);

            QueryResponse response = solrServer.query(query);

            hasIt = hasResult(response);

    	}

    	return hasIt;

    }

    /**

     * Build a query for decide if the solr server has the id.

     * @param id

     * @return the query

     */

    public static SolrParams buildIdQuery(String id) {

    	    String query = "select?q=id:"+id;

    		query = query.replaceAll("\\+", "%2B");

            SolrParams solrParams = SolrRequestParsers.parseQueryString(query);

            return solrParams;

    }

    /**

     * Determine if the response has any solr documents.

     * @param response

     * @return true if it has at least one solr document;

     */

    public static boolean hasResult(QueryResponse response) {

    	boolean hasResult = false;

    	if(response != null) {

    		SolrDocumentList list = response.getResults();

    		if(list != null && list.getNumFound() >0) {

    			hasResult = true;

    		}

    	}

    	return hasResult;

    }