Examples of org.sindice.siren.search.node.NodePrefixQuery

org.sindice.siren.search.node.NodePrefixQuery
A {@link NodePrimitiveQuery} that matches documents containing terms with aspecified prefix. A PrefixQuery is built by QueryParser for input like app*.
This query uses the {@link MultiNodeTermQuery#CONSTANT_SCORE_AUTO_REWRITE_DEFAULT} rewritemethod.
Code taken from {@link PrefixQuery} and adapted for SIREn.


  @Test
  public void testPrefixQuery()
  throws Exception {
    final Query ntq = new LuceneProxyNodeQuery(
      new NodePrefixQuery(new Term(SirenTestCase.DEFAULT_TEST_FIELD, "lit"))
    );
    this._assertSirenQuery(ntq, "lit*");


    final TwigQuery twq = new TwigQuery(1);
    twq.addChild(new NodePrefixQuery(new Term(SirenTestCase.DEFAULT_TEST_FIELD, "lit")),
      NodeBooleanClause.Occur.MUST);
    this._assertSirenQuery(new LuceneProxyNodeQuery(twq), "* : lit*");
  }

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  public NodePrefixQuery build(final QueryNode queryNode) throws QueryNodeException {
    final PrefixWildcardQueryNode wildcardNode = (PrefixWildcardQueryNode) queryNode;


    final String text = wildcardNode.getText().subSequence(0, wildcardNode.getText().length() - 1).toString();
    final NodePrefixQuery q = new NodePrefixQuery(new Term(wildcardNode.getFieldAsString(), text));


    final MultiNodeTermQuery.RewriteMethod method = (MultiNodeTermQuery.RewriteMethod)queryNode.getTag(MultiNodeTermRewriteMethodProcessor.TAG_ID);
    if (method != null) {
      q.setRewriteMethod(method);
    }
    return q;
  }

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Related Classes of org.sindice.siren.search.node.NodePrefixQuery

org.apache.lucene.index.TermsEnum

org.apache.lucene.search.PrefixTermsEnum

org.sindice.siren.qparser.keyword.builders.NodePrefixWildcardQueryNodeBuilder

org.sindice.siren.qparser.keyword.KeywordQueryParserTest

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