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    Language
    C#
    Article For
    3.5
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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);

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