Handling special characters with lucene

Question

i haven't found the answer to my problem so I decided to write my question to get some help.

I use lucene to index the objects in computer memory(they exist only in my java code). While processing the code I index (using WhitespaceAnalyzer ) the field with value objA/4 .

My problem starts when I want to find it after the indexation (also using WhitespaceAnalyzer ).

When i create a query obj* , I find all objects that start with obj - if i create a query objA/4 I also can find this object.

However i don't know how to find all objects starting with objA/ , when I create a query objA/* lucene is changing it to obja/* and finds nothing.

I've checked and "/" is not a special character so i dont need any "\\" preceding it.

So my question is how to ask to get all objects that starts with objA/ (for example - objA/0 , objA/1 , objA/2 , objA/3 )?

Answer 1

您是否使用QueryParser.escape(String)正确转义所有内容？

Answer 2

The code i'm using:

String node = "objA/*";   

 Query node_query = MultiFieldQueryParser.parse(node, "nodeName", new WhitespaceAnalyzer());

 BooleanQuery bq = new BooleanQuery();  

 bq.add(node_query, BooleanClause.Occur.MUST);

 System.out.println("We're asking for - " + bq);  

 IndexSearcher looker = new IndexSearcher(rep_index);

 Hits hits = looker.search(bq);