that's fine. thank you. On Fri, Mar 23, 2012 at 7:30 PM, Martijn v Groningen < martijn.v.gronin...@gmail.com> wrote:
> Hi, > > There is an example usage in the package.html. > Something to keep in mind is that this search time join is different than > block join query. The JoinUtil can be used to do join filtering and the > block join is more meant for parent / child search. > > Martijn > > On 23 March 2012 11:58, Li Li <fancye...@gmail.com> wrote: > > > thank you. is there any the search time join example? > > I can only find a JoinUtil in package org.apache.lucene.search.join and a > > TestJoinUtil in test package. > > > > > > On Fri, Mar 23, 2012 at 6:24 PM, Michael McCandless < > > luc...@mikemccandless.com> wrote: > > > > > I think you're hitting the exception because you passed > > > trackScores=true to ToParentBlockJoinCollector. If you do that, the > > > ScoreMode cannot be None... I'll update the javadocs to make this > > > clear, and I'll also fix the exception message. > > > > > > I think you're hitting the infinite loop because your parent document > > > is first, not last, in the group. Try putting the parent (shirt) > > > document last in each case instead... > > > > > > Query-time join is already committed to trunk and 3.x, so it'll be in > > > 3.6.0/4.0. > > > > > > Mike McCandless > > > > > > http://blog.mikemccandless.com > > > > > > On Fri, Mar 23, 2012 at 12:27 AM, Li Li <fancye...@gmail.com> wrote: > > > > hi all, > > > > I read these two articles > > > > > > > > > > http://blog.mikemccandless.com/2012/01/searching-relational-content-with.html > > > , > > > > > > > > > > http://blog.mikemccandless.com/2012/01/tochildblockjoinquery-in-lucene.htmland > > > > wrote a test program. But it seems there is some problem. it ends > with > > > > endless loop. > > > > Here is my program, almost copy from that article, the only > > > > modification is from BlockJoinQuery to ToParentBlockJoinQuery > because I > > > > can't find BlockJoinQuery in latest 4.0 dev trunk source tree. > > > > another modification is from SocreMode.none to ScoreMode.Avg > because > > > > when using SocreMode.None, an exception throws: > > > > Exception in thread "main" java.lang.IllegalStateException: ScoreMode > > is > > > > None > > > > at > > > > > > > > > > org.apache.lucene.search.join.ToParentBlockJoinQuery$BlockJoinScorer.swapChildScores(ToParentBlockJoinQuery.java:270) > > > > at > > > > > > > > > > org.apache.lucene.search.join.ToParentBlockJoinCollector.copyGroups(ToParentBlockJoinCollector.java:251) > > > > So I change ScoreMode.None to Avg > > > > // BlockJoinQuery skuJoinQuery = new BlockJoinQuery(skuQuery, > > > shirts, > > > > // ScoreMode.None); > > > > ToParentBlockJoinQuery skuJoinQuery = new > > > > ToParentBlockJoinQuery(skuQuery, shirts, > > > > ScoreMode.Avg); > > > > > > > > > > > > Then I run again, it ends up with endless loop in BooleanScorer2: > > > > public void score(Collector collector) throws IOException { > > > > collector.setScorer(this); > > > > while ((doc = countingSumScorer.nextDoc()) != NO_MORE_DOCS) { > > > > collector.collect(doc); > > > > } > > > > } > > > > > > > > current doc is -1, and countingSumScorer.nextDoc() always return > -1! > > > > following is my program. btw, what's the status of query time join? > > > what's > > > > the relationship of solr's join and lucene's join? > > > > -------------my codes------------- > > > > public class TestJoin { > > > > > > > > /** > > > > * @param args > > > > * @throws Exception > > > > */ > > > > public static void main(String[] args) throws Exception { > > > > File f=new File("./testindex"); > > > > if(!f.exists()){ > > > > f.mkdirs(); > > > > } > > > > Directory dir=FSDirectory.open(f); > > > > for(String name:dir.listAll()){ > > > > dir.deleteFile(name); > > > > } > > > > IndexWriterConfig conf=new > > IndexWriterConfig(Version.LUCENE_40,new > > > > WhitespaceAnalyzer(Version.LUCENE_40)); > > > > IndexWriter writer=new IndexWriter(dir, conf); > > > > FieldType fType=new FieldType(); > > > > fType.setIndexed(true); > > > > fType.setStored(true); > > > > fType.setIndexOptions(IndexOptions.DOCS_AND_FREQS); > > > > fType.setTokenized(true); > > > > Document shirt=new Document(); > > > > shirt.add(new Field("name","three wolf",fType)); > > > > shirt.add(new StringField("type", "shirt")); > > > > Document sku1=new Document(); > > > > sku1.add(new StringField("size","small")); > > > > sku1.add(new StringField("color","blue")); > > > > Document sku2=new Document(); > > > > sku2.add(new StringField("size","small")); > > > > sku2.add(new StringField("color","black")); > > > > Document sku3=new Document(); > > > > sku3.add(new StringField("size","medium")); > > > > sku3.add(new StringField("color","black")); > > > > Document sku4=new Document(); > > > > sku4.add(new StringField("size","large")); > > > > sku4.add(new StringField("color","gray")); > > > > List<Document> shirtGroup=new ArrayList<Document>(); > > > > shirtGroup.add(shirt); > > > > shirtGroup.add(sku1); > > > > shirtGroup.add(sku2); > > > > shirtGroup.add(sku3); > > > > shirtGroup.add(sku4); > > > > writer.addDocuments(shirtGroup); > > > > > > > > shirt=new Document(); > > > > shirt.add(new Field("name","seven wolf",fType)); > > > > shirt.add(new StringField("type", "shirt")); > > > > sku1=new Document(); > > > > sku1.add(new StringField("size","large")); > > > > sku1.add(new StringField("color","blue")); > > > > sku2=new Document(); > > > > sku2.add(new StringField("size","small")); > > > > sku2.add(new StringField("color","black")); > > > > > > > > shirtGroup=new ArrayList<Document>(); > > > > shirtGroup.add(shirt); > > > > shirtGroup.add(sku1); > > > > shirtGroup.add(sku2); > > > > writer.addDocuments(shirtGroup); > > > > writer.close(); > > > > > > > > IndexSearcher searcher=new > > > IndexSearcher(DirectoryReader.open(dir)); > > > > Filter shirts = new CachingWrapperFilter(new > QueryWrapperFilter( > > > > new TermQuery(new Term("type", "shirt")))); > > > > BooleanQuery skuQuery = new BooleanQuery(); > > > > skuQuery.add(new TermQuery(new Term("size", "small")), > > > Occur.MUST); > > > > skuQuery.add(new TermQuery(new Term("color", "black")), > > > Occur.MUST); > > > > // BlockJoinQuery skuJoinQuery = new BlockJoinQuery(skuQuery, > > > shirts, > > > > // ScoreMode.None); > > > > ToParentBlockJoinQuery skuJoinQuery = new > > > > ToParentBlockJoinQuery(skuQuery, shirts, > > > > ScoreMode.Avg); > > > > > > > > BooleanQuery query = new BooleanQuery(); > > > > query.add(new TermQuery(new Term("name", "wolf")), > Occur.MUST); > > > > query.add(skuJoinQuery, Occur.MUST); > > > > > > > > ToParentBlockJoinCollector c = new ToParentBlockJoinCollector( > > > > Sort.RELEVANCE, // sort > > > > 10, // numHits > > > > true, // trackScores > > > > false // trackMaxScore > > > > ); > > > > searcher.search(query, c); > > > > > > > > Sort skuSort=new Sort(new SortField("size",Type.STRING)); > > > > TopGroups hits = c.getTopGroups(skuJoinQuery, skuSort, 0, // > > > offset > > > > 10, // maxDocsPerGroup > > > > 0, // withinGroupOffset > > > > true // fillSortFields > > > > ); > > > > System.out.println("totalHitCount: " + hits.totalHitCount); > > > > System.out.println("totalGroupedHitCount: " + > > > > hits.totalGroupedHitCount); > > > > for(GroupDocs group:hits.groups){ > > > > System.out.println("totalHits: "+group.totalHits); > > > > for(ScoreDoc doc:group.scoreDocs){ > > > > System.out.println(doc.doc+", "+doc.score); > > > > } > > > > } > > > > } > > > > > > > > } > > > > > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > > > For additional commands, e-mail: java-user-h...@lucene.apache.org > > > > > > > > > > > > -- > Met vriendelijke groet, > > Martijn van Groningen >
