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Add Hashes and String Example (#3477)
* Add Hashes Example * Fixes examples for hash tutorial * Refactor Hash Tutorial to Java 8 (from 17) * Change indentation to 4 spaces * Add Strings Example * Reformat samples to 2-space indentation --------- Co-authored-by: Elena Kolevska <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| //EXAMPLE: hash_tutorial | ||
| package io.redis.examples; | ||
|
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| import redis.clients.jedis.UnifiedJedis; | ||
|
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| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| //REMOVE_START | ||
| import org.junit.Test; | ||
| import static org.junit.Assert.assertEquals; | ||
| //REMOVE_END | ||
|
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| public class HashExample { | ||
| @Test | ||
| public void run() { | ||
| try (UnifiedJedis jedis = new UnifiedJedis("redis://localhost:6379")) { | ||
| // REMOVE_START | ||
| jedis.del("bike:1", "bike:1:stats"); | ||
| // REMOVE_END | ||
|
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| // STEP_START set_get_all | ||
| Map<String, String> bike1 = new HashMap<>(); | ||
| bike1.put("model", "Deimos"); | ||
| bike1.put("brand", "Ergonom"); | ||
| bike1.put("type", "Enduro bikes"); | ||
| bike1.put("price", "4972"); | ||
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| Long res1 = jedis.hset("bike:1", bike1); | ||
| System.out.println(res1); // 4 | ||
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| String res2 = jedis.hget("bike:1", "model"); | ||
| System.out.println(res2); // Deimos | ||
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| String res3 = jedis.hget("bike:1", "price"); | ||
| System.out.println(res3); // 4972 | ||
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| Map<String, String> res4 = jedis.hgetAll("bike:1"); | ||
| System.out.println(res4); // {type=Enduro bikes, brand=Ergonom, price=4972, model=Deimos} | ||
| // STEP_END | ||
|
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| // REMOVE_START | ||
| assertEquals(4, res1.longValue()); | ||
| assertEquals("Deimos", res2); | ||
| assertEquals("4972", res3); | ||
| assertEquals("Deimos", res4.get("model")); | ||
| assertEquals("Ergonom", res4.get("brand")); | ||
| assertEquals("Enduro bikes", res4.get("type")); | ||
| assertEquals("4972", res4.get("price")); | ||
| // REMOVE_END | ||
|
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| // STEP_START hmget | ||
| List<String> res5 = jedis.hmget("bike:1", "model", "price"); | ||
| System.out.println(res5); // [Deimos, 4972] | ||
| // STEP_END | ||
|
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| // REMOVE_START | ||
| assert res5.toString().equals("[Deimos, 4972]"); | ||
| // REMOVE_END | ||
|
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| // STEP_START hincrby | ||
| Long res6 = jedis.hincrBy("bike:1", "price", 100); | ||
| System.out.println(res6); // 5072 | ||
| Long res7 = jedis.hincrBy("bike:1", "price", -100); | ||
| System.out.println(res7); // 4972 | ||
| // STEP_END | ||
|
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| // REMOVE_START | ||
| assertEquals(5072, res6.longValue()); | ||
| assertEquals(4972, res7.longValue()); | ||
| // REMOVE_END | ||
|
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| // STEP_START incrby_get_mget | ||
| Long res8 = jedis.hincrBy("bike:1:stats", "rides", 1); | ||
| System.out.println(res8); // 1 | ||
| Long res9 = jedis.hincrBy("bike:1:stats", "rides", 1); | ||
| System.out.println(res9); // 2 | ||
| Long res10 = jedis.hincrBy("bike:1:stats", "rides", 1); | ||
| System.out.println(res10); // 3 | ||
| Long res11 = jedis.hincrBy("bike:1:stats", "crashes", 1); | ||
| System.out.println(res11); // 1 | ||
| Long res12 = jedis.hincrBy("bike:1:stats", "owners", 1); | ||
| System.out.println(res12); // 1 | ||
| String res13 = jedis.hget("bike:1:stats", "rides"); | ||
| System.out.println(res13); // 3 | ||
| List<String> res14 = jedis.hmget("bike:1:stats", "crashes", "owners"); | ||
| System.out.println(res14); // [1, 1] | ||
| // STEP_END | ||
|
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| // REMOVE_START | ||
| assertEquals(1, res8.longValue()); | ||
| assertEquals(2, res9.longValue()); | ||
| assertEquals(3, res10.longValue()); | ||
| assertEquals(1, res11.longValue()); | ||
| assertEquals(1, res12.longValue()); | ||
| assertEquals("3", res13); | ||
| assertEquals("[1, 1]", res14.toString()); | ||
| // REMOVE_END | ||
| } | ||
| } | ||
| } |
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