how to create query parser to parse query param in spring REST - spring

Question

My query parameter is like this:
q=name:abc+age:20+roleid:(23|45)|audeince:(23|24).Here + is for AND | is for OR
I have to accept this query param as it is into my spring controller and have to make query to solar to fetch the data.

#Controller
#RequestMapping("/user")
public class BooksController {
#RequestMapping(value="/details", method=RequestMethod.GET)
public ResponseEntity<?> getUser(final HttpServletRequest request) {
String params = requestParams.get("q")[0];
//passing this string to make query in apache solar
}
}
I need to write a parser to split the param value to make a solar query.how to write a query parser to split the above url to make solar query satisfying OR AND condition.name:abc+age:20+roleid:(23|45)|audeince:(23|24) means create a solar query where name=abc and age=20 and roleid in (23,24) or audience in (23,24) .This way user sends query.
Eg:firstName:(abc|bcd)+lastName:abc+emailId:abc+dsID:abc|countryCd:US+audienceId:(123+678)
first using regex convert like this
firstName:(abc|bcd)+ -----------segment1
lastName:abc+.............segment2
emailId:abc+.............segment3
dsID:abc|--------------segment4
countryCd:US+----------segment5
audienceId:(123+678)------segment 6;
like many segments may come in the url
i have a class called
class Queryobj{
private String field;
private List value;
private String internalOperator;
private String externalOperator;
}
firstName:(abc|bcd)+ again using regex map Like this
field=firstName
value={abc,bcd}
internalOperator=|
externalOperator=+
like second segment emailId:abc+
field=emailId
value=abc
internalOperator=null
externalOperator=+
same for other segments also .if there are n segments we have n objects.
After that add each object to Linked List.if internalOperator or externalOperator is null then leave it as null .How can I achieve that

Answer 1

You can use this regex pattern to get "key:value operator" segment
Pattern keyValuePattern = Pattern.compile("[\\w]+:([\\w#.]+|\\([\\w|+#.]+\\))[+|]?");