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Simple Payload Query Parser (Solr/Lucene)
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import org.apache.commons.lang.StringUtils; | |
import org.apache.lucene.index.Term; | |
import org.apache.lucene.search.BooleanQuery; | |
import org.apache.lucene.search.Query; | |
import org.apache.lucene.search.BooleanClause.Occur; | |
import org.apache.lucene.search.payloads.AveragePayloadFunction; | |
import org.apache.lucene.search.payloads.PayloadTermQuery; | |
import org.apache.solr.common.params.SolrParams; | |
import org.apache.solr.common.util.NamedList; | |
import org.apache.solr.request.SolrQueryRequest; | |
import org.apache.solr.search.QParser; | |
import org.apache.solr.search.QParserPlugin; | |
import org.apache.solr.search.SyntaxError; | |
/** | |
* Parser plugin to parse payload queries. | |
*/ | |
public class PayloadQParserPlugin extends QParserPlugin { | |
@Override | |
public QParser createParser(String qstr, SolrParams localParams, | |
SolrParams params, SolrQueryRequest req) { | |
return new PayloadQParser(qstr, localParams, params, req); | |
} | |
@Override | |
public void init(NamedList args) { | |
} | |
} | |
class PayloadQParser extends QParser { | |
public PayloadQParser(String qstr, SolrParams localParams, SolrParams params, | |
SolrQueryRequest req) { | |
super(qstr, localParams, params, req); | |
} | |
@Override | |
public Query parse() throws SyntaxError { | |
BooleanQuery q = new BooleanQuery(); | |
String[] nvps = StringUtils.split(qstr, " "); | |
for (int i = 0; i < nvps.length; i++) { | |
String[] nv = StringUtils.split(nvps[i], ":"); | |
if (nv[0].startsWith("+")) { | |
q.add(new PayloadTermQuery(new Term(nv[0].substring(1), nv[1]), | |
new AveragePayloadFunction(), false), Occur.MUST); | |
} else { | |
q.add(new PayloadTermQuery(new Term(nv[0], nv[1]), | |
new AveragePayloadFunction(), false), Occur.SHOULD); | |
} | |
} | |
return q; | |
} | |
} |
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it work for solr6.3 ?