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Session: How to use MoreLikeThis?
MoreLikeThis is available through advanced() in session operations. This method returns articles similar to the provided input.
Syntax
public <T> T[] moreLikeThis(Class<T> entityClass, Class<? extends AbstractIndexCreationTask> indexCreator, String documentId);
public <T> T[] moreLikeThis(Class<T> entityClass, Class<? extends AbstractIndexCreationTask> indexCreator, MoreLikeThisQuery parameters);
public <T> T[] moreLikeThis(Class<T> entityClass, String index, String documentId);
public <T> T[] moreLikeThis(Class<T> entityClass, Class<? extends AbstractIndexCreationTask> indexCreator, Class<? extends AbstractTransformerCreationTask> transformerClass, String documentId);
public <T> T[] moreLikeThis(Class<T> entityClass, Class<? extends AbstractIndexCreationTask> indexCreator, Class<? extends AbstractTransformerCreationTask> transformerClass, MoreLikeThisQuery parameters);
public <T> T[] moreLikeThis(Class<T> entityClass, String index, String transformer, String documentId);
public <T> T[] moreLikeThis(Class<T> entityClass, String index, String transformer, MoreLikeThisQuery parameters);| Parameters | ||
|---|---|---|
| index | String | Name of an index on which query will be executed. |
| documentId | String | Id of a document for which similarities will be searched. |
| parameters | MoreLikeThisQuery | A more like this query definition that will be executed. |
| Return Value | |
|---|---|
| T[] | Array of similar documents returned as entities. |
Example I
// Search for similar articles to 'articles/1'
// using 'Articles/MoreLikeThis' index and search only field 'Body'
MoreLikeThisQuery moreLikeThisQuery = new MoreLikeThisQuery();
moreLikeThisQuery.setIndexName("Articles/MoreLikeThis");
moreLikeThisQuery.setDocumentId("articles/1");
moreLikeThisQuery.setFields(new String[] { "Body" });
Article[] articles = session.advanced()
.moreLikeThis(Article.class, "Articles/MoreLikeThis", null, moreLikeThisQuery);Example II
// Search for similar articles to 'articles/1'
// using 'Articles/MoreLikeThis' index and search only field 'Body'
// where article category is 'IT'
MoreLikeThisQuery moreLikeThisQuery = new MoreLikeThisQuery();
moreLikeThisQuery.setIndexName("Articles/MoreLikeThis");
moreLikeThisQuery.setDocumentId("articles/1");
moreLikeThisQuery.setFields(new String[] { "Body" });
moreLikeThisQuery.setAdditionalQuery("Category:IT");
session.advanced().moreLikeThis(Article.class, "Articles/MoreLikeThis", null, moreLikeThisQuery);