File	Doc	Category	Size	Date	Package
TestSpansAdvanced.java	API Doc	Apache Lucene 2.0.0	5954	Fri May 26 09:54:10 BST 2006	org.apache.lucene.search.spans

TestSpansAdvanced

• java.lang.Object
  • junit.framework.Assert
    • junit.framework.TestCase

Fields Summary
protected Directory	mDirectory
protected IndexSearcher	searcher
private static final String	FIELD_ID
protected static final String	FIELD_TEXT

Constructors Summary

Methods Summary
protected void	addDocument(org.apache.lucene.index.IndexWriter writer, java.lang.String id, java.lang.String text) Adds the document to the index. param writer the Lucene index writer param id the unique id of the document param text the text of the document throws IOException final Document document = new Document(); document.add(new Field(FIELD_ID, id, Field.Store.YES, Field.Index.UN_TOKENIZED)); document.add(new Field(FIELD_TEXT, text, Field.Store.YES, Field.Index.TOKENIZED)); writer.addDocument(document);
protected static void	assertHits(org.apache.lucene.search.Searcher s, org.apache.lucene.search.Query query, java.lang.String description, java.lang.String[] expectedIds, float[] expectedScores) Checks to see if the hits are what we expected. param query the query to execute param description the description of the search param expectedIds the expected document ids of the hits param expectedScores the expected scores of the hits throws IOException final float tolerance = 1e-5f; // Hits hits = searcher.search(query); // hits normalizes and throws things off if one score is greater than 1.0 TopDocs topdocs = s.search(query,null,10000); /***** // display the hits System.out.println(hits.length() + " hits for search: \"" + description + '\"'); for (int i = 0; i < hits.length(); i++) { System.out.println(" " + FIELD_ID + ':' + hits.doc(i).get(FIELD_ID) + " (score:" + hits.score(i) + ')'); } *****/ // did we get the hits we expected assertEquals(expectedIds.length, topdocs.totalHits); for (int i = 0; i < topdocs.totalHits; i++) { //System.out.println(i + " exp: " + expectedIds[i]); //System.out.println(i + " field: " + hits.doc(i).get(FIELD_ID)); int id = topdocs.scoreDocs[i].doc; float score = topdocs.scoreDocs[i].score; Document doc = s.doc(id); assertEquals(expectedIds[i], doc.get(FIELD_ID)); boolean scoreEq = Math.abs(expectedScores[i] - score) < tolerance; if (!scoreEq) { System.out.println(i + " warning, expected score: " + expectedScores[i] + ", actual " + score); System.out.println(s.explain(query,id)); } assertEquals(expectedScores[i], score, tolerance); assertEquals(s.explain(query,id).getValue(), score, tolerance); }
protected void	doTestBooleanQueryWithSpanQueries(org.apache.lucene.search.IndexSearcher s, float expectedScore) Tests two span queries. throws IOException final Query spanQuery = new SpanTermQuery(new Term(FIELD_TEXT, "work")); final BooleanQuery query = new BooleanQuery(); query.add(spanQuery, BooleanClause.Occur.MUST); query.add(spanQuery, BooleanClause.Occur.MUST); final String[] expectedIds = new String[] { "1", "2", "3", "4" }; final float[] expectedScores = new float[] { expectedScore, expectedScore, expectedScore, expectedScore }; assertHits(s, query, "two span queries", expectedIds, expectedScores);
protected void	setUp() Initializes the tests by adding 4 identical documents to the index. super.setUp(); // create test index mDirectory = new RAMDirectory(); final IndexWriter writer = new IndexWriter(mDirectory, new StandardAnalyzer(), true); addDocument(writer, "1", "I think it should work."); addDocument(writer, "2", "I think it should work."); addDocument(writer, "3", "I think it should work."); addDocument(writer, "4", "I think it should work."); writer.close(); searcher = new IndexSearcher(mDirectory);
protected void	tearDown() searcher.close(); mDirectory.close(); mDirectory = null;
public void	testBooleanQueryWithSpanQueries() Tests two span queries. throws IOException doTestBooleanQueryWithSpanQueries(searcher,0.3884282f);