func main() {
util.SetDefaultInfoStream(util.NewPrintStreamInfoStream(os.Stdout))
index.DefaultSimilarity = func() index.Similarity {
return search.NewDefaultSimilarity()
}
directory, _ := store.OpenFSDirectory("test_index")
analyzer := std.NewStandardAnalyzer()
conf := index.NewIndexWriterConfig(util.VERSION_LATEST, analyzer)
writer, _ := index.NewIndexWriter(directory, conf)
d := document.NewDocument()
d.Add(document.NewTextFieldFromString("foo", "bar", document.STORE_YES))
writer.AddDocument(d.Fields())
writer.Close() // ensure index is written
reader, _ := index.OpenDirectoryReader(directory)
searcher := search.NewIndexSearcher(reader)
q := search.NewTermQuery(index.NewTerm("foo", "bar"))
res, _ := searcher.Search(q, nil, 1000)
fmt.Printf("Found %v hit(s).\n", res.TotalHits)
for _, hit := range res.ScoreDocs {
fmt.Printf("Doc %v score: %v\n", hit.Doc, hit.Score)
doc, _ := reader.Document(hit.Doc)
fmt.Printf("foo -> %v\n", doc.Get("foo"))
}
}
func TestBasicIndexAndSearch(t *testing.T) {
q := search.NewTermQuery(index.NewTerm("foo", "bar"))
q.SetBoost(-42)
os.RemoveAll(".gltest")
directory, err := store.OpenFSDirectory(".gltest")
It(t).Should("has no error: %v", err).Assert(err == nil)
It(t).Should("has valid directory").Assert(directory != nil)
fmt.Println("Directory", directory)
defer directory.Close()
analyzer := std.NewStandardAnalyzer()
conf := index.NewIndexWriterConfig(util.VERSION_LATEST, analyzer)
writer, err := index.NewIndexWriter(directory, conf)
It(t).Should("has no error: %v", err).Assert(err == nil)
d := docu.NewDocument()
d.Add(docu.NewTextFieldFromString("foo", "bar", docu.STORE_YES))
err = writer.AddDocument(d.Fields())
It(t).Should("has no error: %v", err).Assert(err == nil)
err = writer.Close() // ensure index is written
It(t).Should("has no error: %v", err).Assert(err == nil)
reader, err := index.OpenDirectoryReader(directory)
It(t).Should("has no error: %v", err).Assert(err == nil)
defer reader.Close()
searcher := search.NewIndexSearcher(reader)
res, err := searcher.Search(q, nil, 1000)
It(t).Should("has no error: %v", err).Assert(err == nil)
hits := res.ScoreDocs
It(t).Should("expect 1 hits, but %v only.", len(hits)).Assert(len(hits) == 1)
It(t).Should("expect score to be negative (got %v)", hits[0].Score).Verify(hits[0].Score < 0)
explain, err := searcher.Explain(q, hits[0].Doc)
It(t).Should("has no error: %v", err).Assert(err == nil)
It(t).Should("score doesn't match explanation (%v vs %v)", hits[0].Score, explain.Value()).Verify(isSimilar(hits[0].Score, explain.Value(), 0.001))
It(t).Should("explain doesn't think doc is a match").Verify(explain.IsMatch())
}