Lucene: how to index and search multiple values ​​in one field

Question

How to index and search for multiple values ​​in one field.

eg. let's say I have a processor field that can have values i3, i5, i7 or i3 or i3, i5 . Now imagine the laptop data as shown below:

data1:

name= laptop name price = laptop price processor=core duo 

data2:

  name= laptop name price = laptop price processor=i3,i5 

data3:

  name= laptop name price = laptop price processor=i3,i5,i7 

Now,

If the user wants to search only the i3 and i5 processor, he should show only data2 and data3.

So my question is: how should I index and search for lucene. I am using lucene 4.4.

I checked this one , but could not understand, since not a single example was there. For me this will be a good example.

Answer 1

Honestly, this is actually not so much. Using StandardAnalyzer and standard QueryParser , you would simply add a field to the document in the form shown, for example:

 Document document = new Document(); document.add(new TextField("name", "laptop name")); document.add(new TextField("processor", "i3,i5,i7")); //Add other fields as needed... //Assuming you've set up your writing to use StandardAnalyzer... writer.addDocument(document); 

StandardAnalyzer will mark punctuation (and spaces, etc.) by indexing the “i3”, “i5” and “i7” tokens in the “processor” field, so when used only using the standard QueryParser (see syntax analysis syntax ), the query :

 processor:(i3 i5) 

Find any fields with "i3" or "i5" in the "processor" field

Answer 2

You can inspire with your source code: http://git.abclinuxu.cz/?p=abclinuxu.git;a=tree;f=src/cz/abclinuxu/utils/search;h=d825ec75da1b19ca0cd6065458fec771de174be9;hb=HEAD

MyDocument is a POJO that creates LuceneDocument. Important information is stored in the field, so it is searchable. My document type is similar to your processor type:

 Field field = new Field(TYPE, type, Field.Store.YES, Field.Index.UN_TOKENIZED); 

Each type of processor must be stored separately.