D-Net

package eu.dnetlib.data.search.solr;

import eu.dnetlib.domain.EPR;

import eu.dnetlib.domain.SecureDriverResource;

import gr.uoa.di.driver.enabling.resultset.ResultSet;

import gr.uoa.di.driver.enabling.resultset.ResultSetFactory;

import org.apache.log4j.Logger;

import org.apache.solr.client.solrj.impl.CloudSolrClient;

import java.util.Arrays;

import java.util.HashMap;

import java.util.Map;

/**

 * Created by antleb on 2/4/14.

 */

public class SolrResultSetFactory implements ResultSetFactory {

    private Logger logger = Logger.getLogger(getClass());

    private Map<String, CloudSolrClient> clients = new HashMap<String, CloudSolrClient>();

    @Override

    public ResultSet<String> createResultSet(EPR epr) {

        try {

            String[] zkservers= epr.getAddress().split(",");

            CloudSolrClient solrClient;

            synchronized (clients) {

                solrClient =  clients.get(epr.getAddress());

            }

            if (solrClient == null) {

                solrClient = new CloudSolrClient.Builder().withZkHost(Arrays.asList(zkservers)).build();

                clients.put(epr.getAddress(), solrClient);

            }

            ResultSet<String> solrResultSets = new SolrResultSet(epr, solrClient);

            return solrResultSets;

        } catch (Exception e) {

            logger.error("Error creating solr client", e);

        }

        logger.debug("NOT HERE!");

        return null;

    }

    @Override

    public <D> ResultSet<D> createResultSet(EPR epr, Class<D> resourceClass) {

        return (ResultSet<D>) createResultSet(epr);

    }

    @Override

    public <D> ResultSet<D> createResultSet(ResultSet<?> rs, Class<D> resourceClass) {

        throw new UnsupportedOperationException();

    }

    @Override

    public <D extends SecureDriverResource> ResultSet<D> createSecurityAwareRS(EPR epr, Class<D> resourceClass) {

        throw new UnsupportedOperationException();

    }

}