java - How to parse string key/value and make a new key/value out of it and load it in same map? -

i have map of string , string in have key/value pair shown below. each client_123, have 2 keys values shown below.

test_client_123=7|0.1|0.2|0.3|0.3 test_abc_pqr_client_123=16|5.5562501|5.1999998|13.6000004|13.6000004  test_client_987=9|0.3|0.4|0.7|0.7 test_abc_pqr_client_987=10|2.222|3.333|4.567|7.876   

this example, have many more key/value pairs in same format. difference client_123 other clients client_543 , after = numbers might different in pipe well. that's all.

what each value mean in pipe delimited format: here 7 count, 0.1 average in ms, 0.2 median in ms, 0.3 95th percentile in ms , 0.3 again 99th percentile in ms. second line well. , in format always.

problem statement:

for line test_client_123=7|0.1|0.2|0.3|0.3, need make below new key/value pair , load in same map:

test_in_process_client_123_count=7 test_in_process_client_123_avg_in_ms=0.1 test_in_process_client_123_median_in_ms=0.2 test_in_process_client_123_95_in_ms=0.3 test_in_process_client_123_99_in_ms=0.3 

and line test_abc_pqr_client_123=16|5.5562501|5.1999998|13.6000004|13.6000004, want make below new key/value pair , load in same map:

test_abc_pqr_client_123_count=16 test_abc_pqr_client_123_avg_in_ms=5.5562501 test_abc_pqr_client_123_median_in_ms=5.1999998 test_abc_pqr_client_123_95_in_ms=13.6000004 test_abc_pqr_client_123_99_in_ms=13.6000004 

how can achieve this? below code load original key/value pairs in map:

string response = resttemplate.getforobject(url, string.class); matcher m = pattern.matcher(response); while (m.find()) {     metricholder.put(m.group(1), m.group(2)); } 

now metricholder map have above original key , pipe delimited values. want load new key/value pair in same metricholder map , remove original key/value pair map after convert them new key/value pair.

interesting problem solve, came out own solution this, hope helps or useful trying do, if understand want add new records map, based on previous entries, did:

public class dictionaryprocessor {  //suffixes , common string parts final static string process = "_in_process_"; final static string count = "_count"; final static string avg_in_ms = "_avg_in_ms"; final static string median_in_ms = "_median_in_ms"; final static string n95_in_ms = "_95_in_ms"; final static string n99_in_ms = "_99_in_ms"; final static string pqr = "_pqr_";  public static void main(string[] args) {     //assuming data have:     map<string, string> dictionarymap = new hashmap<string, string>();     dictionarymap.put("test_client_123", "7|0.1|0.2|0.3|0.3");     dictionarymap.put("test_abc_pqr_client_123", "16|5.5562501|5.1999998|13.6000004|13.6000004");     dictionarymap.put("test_client_987", "9|0.3|0.4|0.7|0.7");     dictionarymap.put("test_abc_pqr_client_987", "10|2.222|3.333|4.567|7.876");      //i define temporary map hold new values     map<string, string> tempmap = new hashmap<string, string>();      //we iterate our map      (map.entry<string, string> entry : dictionarymap.entryset()) {          string currentkey = entry.getkey();//get current key         string currentvalue = entry.getvalue();//get current value key         //since value has data separated "|", i'd use "stringtokenizer" (split or regex worth use to)         stringtokenizer tokenizer = new stringtokenizer(currentvalue, "|");          string count = tokenizer.nexttoken().trim();         string avgdata = tokenizer.nexttoken().trim();         string mediandata = tokenizer.nexttoken().trim();         string n95data = tokenizer.nexttoken().trim();         string n99data = tokenizer.nexttoken().trim();          tempmap.put(generatenewkey(currentkey, currentkey.contains(pqr), count), count);         tempmap.put(generatenewkey(currentkey, currentkey.contains(pqr), avg_in_ms), avgdata);         tempmap.put(generatenewkey(currentkey, currentkey.contains(pqr), median_in_ms), mediandata);         tempmap.put(generatenewkey(currentkey, currentkey.contains(pqr), n95_in_ms), n95data);         tempmap.put(generatenewkey(currentkey, currentkey.contains(pqr), n99_in_ms), n99data);     }      //iterate temporary map , add existing dictionary map     (map.entry<string, string> entry : tempmap.entryset()) {         dictionarymap.put(entry.getkey(), entry.getvalue());     }      printmap(dictionarymap);  }  private static void printmap(map<string, string> targetmap) {     (map.entry<string, string> entry : targetmap.entryset()) {         system.out.println(entry.getkey() + "=" + entry.getvalue());     } }  private static string generatenewkey(string currentkey, boolean haspqr,         string constant) {     stringbuilder newkey = new stringbuilder();      if (haspqr) {         newkey.append(currentkey).append(constant);     } else {         string firstpart = currentkey.substring(0, currentkey.indexof("_"));         string secondpart = currentkey.substring(currentkey.lastindexof("_") + 1, currentkey.length());         newkey.append(firstpart).append(process).append(secondpart).append(constant);     }      return newkey.tostring(); }  } 

hope useful. happy coding :)