nl.knaw.dans.common.solr.SolrServerWrapper.java Source code

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Here is the source code for nl.knaw.dans.common.solr.SolrServerWrapper.java

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/*******************************************************************************
 * Copyright 2015 DANS - Data Archiving and Networked Services
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package nl.knaw.dans.common.solr;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import nl.knaw.dans.common.lang.search.Field;
import nl.knaw.dans.common.lang.search.IndexDocument;
import nl.knaw.dans.common.lang.search.SearchRequest;
import nl.knaw.dans.common.lang.search.exceptions.SearchEngineException;
import nl.knaw.dans.common.lang.search.simple.SimpleSearchResult;
import nl.knaw.dans.common.solr.converter.SolrDocumentConverter;
import nl.knaw.dans.common.solr.converter.SolrQueryRequestConverter;
import nl.knaw.dans.common.solr.converter.SolrQueryResponseConverter;
import nl.knaw.dans.common.solr.exceptions.SolrSearchEngineException;

import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.response.QueryResponse;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This is meant to be a very simple wrapper around SolrServer.
 * 
 * @author lobo
 */
public class SolrServerWrapper {
    private static final Logger LOGGER = LoggerFactory.getLogger(SolrServerWrapper.class);

    private SolrServer server;

    public SolrServerWrapper(SolrServer server) {
        this.server = server;
    }

    public void index(Collection<IndexDocument> indexDocuments) throws SolrSearchEngineException {
        try {
            server.add(SolrDocumentConverter.convert(indexDocuments));

            LOGGER.info("Solr: Indexed " + indexDocuments.size() + " documents.");
        } catch (SolrServerException e) {
            throw new SolrSearchEngineException(e);
        } catch (IOException e) {
            throw new SolrSearchEngineException(e);
        }
    }

    @SuppressWarnings("unchecked")
    public SimpleSearchResult search(SearchRequest request) throws SearchEngineException {
        try {
            SolrQuery query = SolrQueryRequestConverter.convert(request);
            LOGGER.debug("Solr: searching with " + query.toString() + ".");

            QueryResponse solrResponse = server.query(query);

            SimpleSearchResult result = SolrQueryResponseConverter.convert(solrResponse, request.getIndex());

            LOGGER.debug("Solr: returned " + result.getHits().size() + " documents and " + result.getFacets().size()
                    + " facets.");

            return result;
        } catch (SolrServerException e) {
            throw new SearchEngineException(e);
        }
    }

    public void deleteByQuery(SearchRequest request) throws SearchEngineException {
        try {
            SolrQuery query = SolrQueryRequestConverter.convert(request);
            LOGGER.info("Solr: deleting by Query " + query.toString());
            server.deleteByQuery(query.getQuery());
        } catch (SolrServerException e) {
            throw new SearchEngineException(e);
        } catch (IOException e) {
            throw new SearchEngineException(e);
        }
    }

    public void deleteByPrimaryKey(List<Field<?>> primaryKeys) throws SearchEngineException {
        try {
            List<String> ids = new ArrayList<String>(primaryKeys.size());
            String debugMessage = "";
            for (Field<?> primaryKey : primaryKeys) {
                String keyStr = SolrUtil.toString(primaryKey.getValue());
                ids.add(keyStr);
                debugMessage += keyStr + ", ";
            }

            LOGGER.info("Solr: deleting " + debugMessage);

            server.deleteById(ids);
        } catch (SolrServerException e) {
            throw new SearchEngineException(e);
        } catch (IOException e) {
            throw new SearchEngineException(e);
        }
    }

    public void commit() throws SearchEngineException {
        try {
            LOGGER.info("Solr: commit");
            server.commit();
        } catch (SolrServerException e) {
            throw new SearchEngineException(e);
        } catch (IOException e) {
            throw new SearchEngineException(e);
        }
    }

    public void rollback() throws SearchEngineException {
        try {
            LOGGER.info("Solr: rollback");
            server.rollback();
        } catch (SolrServerException e) {
            throw new SearchEngineException(e);
        } catch (IOException e) {
            throw new SearchEngineException(e);
        }
    }
}