@Test
public void shouldReturnSimilarResultsGivenMoreLikeThisQuery() {
// given
String sampleMessage =
"So we build a web site or an application and want to add search to it, "
+ "and then it hits us: getting search working is hard. We want our search solution to be fast,"
+ " we want a painless setup and a completely free search schema, we want to be able to index data simply using JSON over HTTP, "
+ "we want our search server to be always available, we want to be able to start with one machine and scale to hundreds, "
+ "we want real-time search, we want simple multi-tenancy, and we want a solution that is built for the cloud.";
String documentId1 = randomNumeric(5);
SampleEntity sampleEntity1 = new SampleEntity();
sampleEntity1.setId(documentId1);
sampleEntity1.setMessage(sampleMessage);
sampleEntity1.setVersion(System.currentTimeMillis());
IndexQuery indexQuery1 = new IndexQuery();
indexQuery1.setId(documentId1);
indexQuery1.setObject(sampleEntity1);
elasticsearchTemplate.index(indexQuery1);
String documentId2 = randomNumeric(5);
SampleEntity sampleEntity2 = new SampleEntity();
sampleEntity2.setId(documentId2);
sampleEntity2.setMessage(sampleMessage);
sampleEntity2.setVersion(System.currentTimeMillis());
IndexQuery indexQuery2 = new IndexQuery();
indexQuery2.setId(documentId2);
indexQuery2.setObject(sampleEntity2);
elasticsearchTemplate.index(indexQuery2);
elasticsearchTemplate.refresh(SampleEntity.class, true);
MoreLikeThisQuery moreLikeThisQuery = new MoreLikeThisQuery();
moreLikeThisQuery.setId(documentId2);
moreLikeThisQuery.addFields("message");
moreLikeThisQuery.setMinDocFreq(1);
// when
Page<SampleEntity> sampleEntities =
elasticsearchTemplate.moreLikeThis(moreLikeThisQuery, SampleEntity.class);
// then
assertThat(sampleEntities.getTotalElements(), is(equalTo(1L)));
assertThat(sampleEntities.getContent(), hasItem(sampleEntity1));
}
@Override
public <T> Page<T> moreLikeThis(MoreLikeThisQuery query, Class<T> clazz) {
int startRecord = 0;
ElasticsearchPersistentEntity persistentEntity = getPersistentEntityFor(clazz);
String indexName =
isNotBlank(query.getIndexName()) ? query.getIndexName() : persistentEntity.getIndexName();
String type = isNotBlank(query.getType()) ? query.getType() : persistentEntity.getIndexType();
Assert.notNull(indexName, "No 'indexName' defined for MoreLikeThisQuery");
Assert.notNull(type, "No 'type' defined for MoreLikeThisQuery");
Assert.notNull(query.getId(), "No document id defined for MoreLikeThisQuery");
MoreLikeThisRequestBuilder requestBuilder =
client.prepareMoreLikeThis(indexName, type, query.getId());
if (query.getPageable() != null) {
startRecord = query.getPageable().getPageNumber() * query.getPageable().getPageSize();
requestBuilder.setSearchSize(query.getPageable().getPageSize());
}
requestBuilder.setSearchFrom(startRecord);
if (isNotEmpty(query.getSearchIndices())) {
requestBuilder.setSearchIndices(toArray(query.getSearchIndices()));
}
if (isNotEmpty(query.getSearchTypes())) {
requestBuilder.setSearchTypes(toArray(query.getSearchTypes()));
}
if (isNotEmpty(query.getFields())) {
requestBuilder.setField(toArray(query.getFields()));
}
if (isNotBlank(query.getRouting())) {
requestBuilder.setRouting(query.getRouting());
}
if (query.getPercentTermsToMatch() != null) {
requestBuilder.setPercentTermsToMatch(query.getPercentTermsToMatch());
}
if (query.getMinTermFreq() != null) {
requestBuilder.setMinTermFreq(query.getMinTermFreq());
}
if (query.getMaxQueryTerms() != null) {
requestBuilder.maxQueryTerms(query.getMaxQueryTerms());
}
if (isNotEmpty(query.getStopWords())) {
requestBuilder.setStopWords(toArray(query.getStopWords()));
}
if (query.getMinDocFreq() != null) {
requestBuilder.setMinDocFreq(query.getMinDocFreq());
}
if (query.getMaxDocFreq() != null) {
requestBuilder.setMaxDocFreq(query.getMaxDocFreq());
}
if (query.getMinWordLen() != null) {
requestBuilder.setMinWordLen(query.getMinWordLen());
}
if (query.getMaxWordLen() != null) {
requestBuilder.setMaxWordLen(query.getMaxWordLen());
}
if (query.getBoostTerms() != null) {
requestBuilder.setBoostTerms(query.getBoostTerms());
}
SearchResponse response = requestBuilder.execute().actionGet();
return resultsMapper.mapResults(response, clazz, query.getPageable());
}