Problem with Analyzing Infix Suggester for Multiple Indexes.

[An...@ril.com]

Dear Team,

I am on Lucene 5.4.0.  We are trying to build Suggestions based on the already Indexed Data. (Say I have indexed field "Content") and the indexes are available on the file server.

Now, in order to use the suggestion feature, I am using AnalyzingInfixSuggester to first build the suggest indexes. For this, I have specified the field name as "Content" and provided another directory wherein the suggest indexes will be generated.

My problem starts from here:


a.       The already indexed data contains two fields ("Content" and "Place"). I want to build suggest indexes on both the fields and in the same directory.

b.      Having build the suggest indexes, I wish to add more suggest indexes on 3rd field or the existing 3 fields itself (Everytime I try to do this, it removes the old indexes.

c.       No matter what I do, I am not able to understand how can I keep on updating the suggest indexes with new data for 2 fields described above and additionally add new field itself to the suggester.

d.      While fetching the suggestions, I am anyhow not specifying any field. Is there a way to prepare suggest indexes field by field. (i.e. for field "Content", I have separate suggest indexes , for field "Place" I have separate suggest indexes, but all of them inside the same directory. And a way to specify to get suggestions from a specific field.)

Code Snippet for Building Suggest Indexes:

java.nio.file.Path path = FileSystems.getDefault().getPath("D:\\", "indexRawData");
FSDirectory phraseIndexdir = FSDirectory.open(path);
String fieldContent="Content";
Analyzer analyzerNormal = new StandardAnalyzer();
java.nio.file.Path path2 = FileSystems.getDefault().getPath(indexPath, "Search");
FSDirectory dir2 = FSDirectory.open(path2);
aInfixSuggester=new AnalyzingInfixSuggester(dir2,analyzerNormal);
IndexReader indexReader= DirectoryReader.open(phraseIndexdir);
aInfixSuggester.build(new LuceneDictionary(indexReader, fieldContent));

Closing all open resources

While searching, I specify the Search directory path as mentioned in path2 above, and get the suggestions by firing the lookup.

Would appreciate some guidance in this regard.

Regards,
Ankit


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