CODEWITHSUNDEEP
redisjedis
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Reputation: 21

ZRANGEBYLEX command on redis using jedis api doesnot return any result

Below command return expected result (places names having prefix 'new alban') when executed in the REDIS CLI.

127.0.0.1:6379> zrangebylex my_places_data_set "[new alban" "[new alban\xff"

  1. "new albany f..."
  2. "new albany p..."
  3. "new albany r..."

But when this command is called using jedis api, it's not returning any result for above prefix but returns if i complete the word.

NO RESULT - pipeline.zrangeByLex(my_places_data_set, "[new alban", "[new alban\xff", 0, 5);

RETURN RESULT - pipeline.zrangeByLex(my_places_data_set, "[new albany", "[new albany\xff", 0, 5);

If i use xff instead of \xff following happens

NO RESULT - pipeline.zrangeByLex(my_places_data_set, "[new alban", "[new albanxff", 0, 5);

RETURN RESULT - pipeline.zrangeByLex(my_places_data_set, "[new albany", "[new albanyxff", 0, 5);

RETURN RESULT - pipeline.zrangeByLex(my_places_data_set, "[new albany", "[new albaxff", 0, 5);

P.S. Jedis api signature : zrangeByLex(String key, String min, String max, int offset, int count)

Upvotes: 1

Views: 466

Answers (1)

DLP
DLP

Reputation: 21

I solved this issue by manually appending hex code to prefix

byte[] prefixByte = ("[" + prefix).getBytes();
byte[] prefixByteExtended = Arrays.copyOf(prefixByte, prefixByte.length + 1);
prefixByteExtended[prefixByte.length] = (byte) 0xFF;
pipeline.zrangeByLex(my_places_data_set, ("[" + prefix), new String(prefixByteExtended), 0, 5));

Upvotes: 1

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