Hello Michael,
following is the code. This is the Sample which we are trying to get
the the hits.Please Guide us
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public void newTry() throws IOException
{
StandardAnalyzer analyzer = new StandardAnalyzer
(Version.LUCENE_41);
// 1. create the index
Directory index = new RAMDirectory();
IndexWriterConfig config = new IndexWriterConfig
(Version.LUCENE_41,
analyzer);
IndexWriter w = new IndexWriter(index, config);
List<Document> documents=new ArrayList<Document>();
documents.add(createProductItem("red", "s", "999"));
documents.add(createProductItem("red", "m", "1000"));
documents.add(createProductItem("red", "l", "2000"));
documents.add(createProduct("Polo Shirt", ".....Made Of 100%
cotton"));
w.addDocuments(documents);
documents.clear();
documents.add(createProductItem("light blue", "s", "1000"));
documents.add(createProductItem("blue", "s", "1900"));
documents.add(createProductItem("dark blue", "s", "1999"));
documents.add(createProductItem("light blue", "m", "2000"));
documents.add(createProductItem("blue", "m", "2090"));
documents.add(createProductItem("dark blue", "m", "2099"));
documents.add(createProduct("white color", "...stripe pattern"));
w.addDocuments(documents);
IndexReader indexreader=DirectoryReader.open(w, false);
IndexSearcher indexsearcher=new IndexSearcher(indexreader);
Query parentQuery= new TermQuery(new Term("docType", "product"));
Filter parentfilter=new CachingWrapperFilter(new QueryWrapperFilter
(parentQuery));
BooleanQuery mainQuery=new BooleanQuery();
Query childQuery=new TermQuery(new Term("size","m"));
mainQuery.add(childQuery,Occur.SHOULD);
ScoreMode scoremode=ScoreMode.None;
ToParentBlockJoinQuery productitemQuery=new ToParentBlockJoinQuery
(mainQuery, parentfilter,
scoremode);
BooleanQuery query = new BooleanQuery();
query.add(new TermQuery(new Term("name", "white color")), Occur.MUST);
query.add(productitemQuery, Occur.MUST);
ToParentBlockJoinCollector c = new ToParentBlockJoinCollector(
Sort.RELEVANCE, // sort
10, // numHits
true, //
trackScores
false //
trackMaxScore
);
TopGroups<Integer> hits =
c.getTopGroups(
productitemQuery,
Sort.RELEVANCE,
0, // offset
10, // maxDocsPerGroup
0, // withinGroupOffset
true // fillSortFields
);
System.out.println("abc");
}
private static Document createProduct(String name,String description)
{
Document document=new Document();
document.add(new org.apache.lucene.document.Field("name", name,
org.apache.lucene.document.TextField.TYPE_STORED));
document.add(new org.apache.lucene.document.Field("docType",
"product", org.apache.lucene.document.TextField.TYPE_STORED));
document.add(new org.apache.lucene.document.Field("description",
description, org.apache.lucene.document.TextField.TYPE_STORED));
return document;
}
private static Document createProductItem(String color,String size,String
price)
{
Document document=new Document();
document.add(new org.apache.lucene.document.Field("color", color,
org.apache.lucene.document.TextField.TYPE_STORED));
document.add(new org.apache.lucene.document.Field("size", size,
org.apache.lucene.document.TextField.TYPE_STORED));
document.add(new org.apache.lucene.document.Field("price", price,
org.apache.lucene.document.TextField.TYPE_STORED));
return document;
}
On Thu, Jan 30, 2014 at 2:24 AM, Michael McCandless
<luc...@mikemccandless.com> wrote:
> Hi,
>
> It looks like the mailing list stripped the attachment; can you try
> inlining the code into your email (is it brief?).
>
> Also, have a look at the unit-test for ToParentBJQ and compare how it
> runs the query with your code?
>
> Mike McCandless
>
> http://blog.mikemccandless.com
>
>
> On Thu, Jan 30, 2014 at 5:15 AM, Priyanka Tufchi
> <priyanka.tuf...@launchship.com> wrote:
>> Hello Michael,
>>
>> We tried the sample of code but the value of "hits" we are getting
>> is null. We tried to search on net but no proper sample example given
>> which can help us to understand. We attached our code with mail
>> .please it would be great if you can give a look to our code.
>>
>> Thanks.
>>
>> On Wed, Jan 29, 2014 at 3:15 AM, Priyanka Tufchi
>> <priyanka.tuf...@launchship.com> wrote:
>>> Hello Michael,
>>>
>>> In the example given in your blog in following line there is error
>>>
>>> searcher.search(query, c);
>>>
>>> whether it should convert in IndexSearcher
>>>
>>> there is no explanation given for document addition in blog example ?
>>> Can you please provide helping hand.
>>>
>>> Thanks.
>>>
>>>
>>>
>>> On Wed, Jan 29, 2014 at 2:59 AM, Michael McCandless
>>> <luc...@mikemccandless.com> wrote:
>>>> Actually, the blog post should still apply: just insert ToParent to
>>>> rename things.
>>>>
>>>> ToChildBlockJoinQuery is the same idea, but it joins in the reverse
>>>> direction, so e.g. if your index has CDs (parent docs) and individual
>>>> songs on those CDs (child docs), you can take a parent-level
>>>> constraint (e.g. maybe price < $12) and join it down to child level
>>>> constraints (maybe a query against the song's title) and then see
>>>> individual songs (not albums) as the returned hits.
>>>>
>>>> Mike McCandless
>>>>
>>>> http://blog.mikemccandless.com
>>>>
>>>>
>>>> On Wed, Jan 29, 2014 at 5:44 AM, Priyanka Tufchi
>>>> <priyanka.tuf...@launchship.com> wrote:
>>>>> Hello Michael,
>>>>>
>>>>> Can i get code snippet for this new classes: ToParentBlockJoinQuery,
>>>>> ToChildBlockJoinQuery
>>>>> and how to use it.
>>>>>
>>>>> thanks
>>>>>
>>>>> On Wed, Jan 29, 2014 at 2:22 AM, Michael McCandless
>>>>> <luc...@mikemccandless.com> wrote:
>>>>>> Sorry, BlockJoinQuery was split into two separate classes:
>>>>>> ToParentBlockJoinQuery, ToChildBlockJoinQuery.
>>>>>>
>>>>>> Mike McCandless
>>>>>>
>>>>>> http://blog.mikemccandless.com
>>>>>>
>>>>>>
>>>>>> On Wed, Jan 29, 2014 at 4:32 AM, Priyanka Tufchi
>>>>>> <priyanka.tuf...@launchship.com> wrote:
>>>>>>> Subject: BlockJoinQuery is missing in lucene-4.1.0 .
>>>>>>> To: java-user@lucene.apache.org
>>>>>>>
>>>>>>>
>>>>>>> Hello ,
>>>>>>>
>>>>>>> I want to Search relational content which has parent child
>>>>>>> relationship . I am following below link
>>>>>>>
>>>>>>> http://blog.mikemccandless.com/2012/01/searching-relational-content-with.html
>>>>>>>
>>>>>>> but got problem in following line
>>>>>>>
>>>>>>> BlockJoinQuery skuJoinQuery = new BlockJoinQuery(
>>>>>>> skuQuery,
>>>>>>> shirts, ScoreMode.None);
>>>>>>>
>>>>>>> where is "BlockJoinQuery " class in lucene-4.1.0 ? It has been
>>>>>>> removed or some other alternative way is in this version.
>>>>>>>
>>>>>>> Thanks in advance.
>>>>>>>
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>>>>>>>
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>>>>>>
>>>>>
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>>>>>
>>>>
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>>
>>
>>
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>
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