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package eu.dnetlib.index.query;
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import java.util.Arrays;
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import eu.dnetlib.clients.index.client.AbstractIndexClient;
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import eu.dnetlib.clients.index.query.IndexQuery;
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import eu.dnetlib.clients.index.query.IndexQueryFactory;
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import eu.dnetlib.clients.index.query.Pruner.Result;
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import eu.dnetlib.clients.index.query.QueryLanguage;
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import eu.dnetlib.clients.index.utils.IndexFieldUtility;
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import eu.dnetlib.cql.lucene.TranslatedQuery;
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import eu.dnetlib.index.utils.HighlightUtils;
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import org.apache.commons.logging.Log;
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import org.apache.commons.logging.LogFactory;
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/**
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* A factory for creating SolrIndexQuery objects.
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*/
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public class SolrIndexQueryFactory extends IndexQueryFactory {
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/**
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* logger.
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*/
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private static final Log log = LogFactory.getLog(SolrIndexQueryFactory.class);
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/**
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* The Property name SERVICE_HIGHLIGHT_ENABLE.
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*/
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private static final String SERVICE_HIGHLIGHT_ENABLE = "service.index.solr.highlight.enable";
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/*
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* (non-Javadoc)
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*
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* @see eu.dnetlib.functionality.index.query.IndexQueryFactory#newInstance(eu.dnetlib.functionality.index.cql.TranslatedQuery,
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* eu.dnetlib.functionality.index.query.Pruner.Result, eu.dnetlib.functionality.index.query.QueryLanguage)
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*/
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@Override
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protected IndexQuery newInstance(final TranslatedQuery cql, final Result res, final QueryLanguage lang) {
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switch (lang) {
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case CQL:
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return new SolrIndexQuery(cql, res.getOptionMap());
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case SOLR:
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return new SolrIndexQuery(res.getNode().toCQL(), res.getOptionMap());
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default:
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throw new IllegalArgumentException("invalid query language: " + lang);
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}
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}
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/*
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* (non-Javadoc)
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*
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* @see eu.dnetlib.functionality.index.query.IndexQueryFactory#setQueryOptions(eu.dnetlib.functionality.index.query.IndexQuery,
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* eu.dnetlib.functionality.index.IndexServerDAO)
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*/
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@Override
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protected IndexQuery setQueryOptions(final IndexQuery indexQuery, final AbstractIndexClient client) {
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final SolrIndexQuery solrQuery = (SolrIndexQuery) indexQuery;
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boolean isHighlightEnabled = Boolean.parseBoolean(client.getServiceProperties().get(SERVICE_HIGHLIGHT_ENABLE));
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if (solrQuery.getHighlight() & isHighlightEnabled) {
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solrQuery.setHighlightFragsize(0).setHighlightSnippets(1).setHighlightSimplePre(HighlightUtils.DEFAULT_HL_PRE)
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.setHighlightSimplePost(HighlightUtils.DEFAULT_HL_POST).addHighlightField(IndexFieldUtility.RESULT)
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.addField(IndexFieldUtility.INDEX_RECORD_ID);
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}
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solrQuery.addField(IndexFieldUtility.RESULT);
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if (solrQuery.getFacetFields() != null) {
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log.debug("getFacetFields() " + Arrays.asList(solrQuery.getFacetFields()));
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solrQuery.setFacetMinCount(1);
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}
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return solrQuery;
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}
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}
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