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| 1 | +import com.basho.riak.client.api.RiakClient; |
| 2 | +import com.basho.riak.client.api.commands.kv.DeleteValue; |
| 3 | +import com.basho.riak.client.api.commands.kv.FetchValue; |
| 4 | +import com.basho.riak.client.api.commands.kv.StoreValue; |
| 5 | +import com.basho.riak.client.core.RiakCluster; |
| 6 | +import com.basho.riak.client.core.RiakNode; |
| 7 | +import com.basho.riak.client.core.query.Location; |
| 8 | +import com.basho.riak.client.core.query.Namespace; |
| 9 | +import com.basho.riak.client.core.query.RiakObject; |
| 10 | +import com.basho.riak.client.core.util.BinaryValue; |
| 11 | + |
| 12 | +import java.net.UnknownHostException; |
| 13 | + |
| 14 | +public class TasteOfRiak { |
| 15 | + // A basic POJO class to demonstrate typed exchanges with Riak |
| 16 | + public static class Book { |
| 17 | + public String title; |
| 18 | + public String author; |
| 19 | + public String body; |
| 20 | + public String isbn; |
| 21 | + public Integer copiesOwned; |
| 22 | + } |
| 23 | + |
| 24 | + // This will create a client object that we can use to interact with Riak |
| 25 | + private static RiakCluster setUpCluster() throws UnknownHostException { |
| 26 | + // This example will use only one node listening on localhost:10017 |
| 27 | + RiakNode node = new RiakNode.Builder() |
| 28 | + .withRemoteAddress("127.0.0.1") |
| 29 | + .withRemotePort(10017) |
| 30 | + .build(); |
| 31 | + |
| 32 | + // This cluster object takes our one node as an argument |
| 33 | + RiakCluster cluster = new RiakCluster.Builder(node) |
| 34 | + .build(); |
| 35 | + |
| 36 | + // The cluster must be started to work, otherwise you will see errors |
| 37 | + cluster.start(); |
| 38 | + |
| 39 | + return cluster; |
| 40 | + } |
| 41 | + |
| 42 | + public static void main( String[] args ) { |
| 43 | + try { |
| 44 | + // First, we'll create a basic object storing a movie quote |
| 45 | + RiakObject quoteObject = new RiakObject() |
| 46 | + // We tell Riak that we're storing plaintext, not JSON, HTML, etc. |
| 47 | + .setContentType("text/plain") |
| 48 | + // Objects are ultimately stored as binaries |
| 49 | + .setValue(BinaryValue.create("You're dangerous, Maverick")); |
| 50 | + System.out.println("Basic object created"); |
| 51 | + |
| 52 | + // In the new Java client, instead of buckets you interact with Namespace |
| 53 | + // objects, which consist of a bucket AND a bucket type; if you don't |
| 54 | + // supply a bucket type, "default" is used; the Namespace below will set |
| 55 | + // only a bucket, without supplying a bucket type |
| 56 | + Namespace quotesBucket = new Namespace("quotes"); |
| 57 | + |
| 58 | + // With our Namespace object in hand, we can create a Location object, |
| 59 | + // which allows us to pass in a key as well |
| 60 | + Location quoteObjectLocation = new Location(quotesBucket, "Iceman"); |
| 61 | + System.out.println("Location object created for quote object"); |
| 62 | + |
| 63 | + // With our RiakObject in hand, we can create a StoreValue operation |
| 64 | + StoreValue storeOp = new StoreValue.Builder(quoteObject) |
| 65 | + .withLocation(quoteObjectLocation) |
| 66 | + .build(); |
| 67 | + System.out.println("StoreValue operation created"); |
| 68 | + |
| 69 | + // And now we can use our setUpCluster() function to create a cluster |
| 70 | + // object which we can then use to create a client object and then |
| 71 | + // execute our storage operation |
| 72 | + RiakCluster cluster = setUpCluster(); |
| 73 | + RiakClient client = new RiakClient(cluster); |
| 74 | + System.out.println("Client object successfully created"); |
| 75 | + |
| 76 | + StoreValue.Response storeOpResp = client.execute(storeOp); |
| 77 | + System.out.println("Object storage operation successfully completed"); |
| 78 | + |
| 79 | + // Now we can verify that the object has been stored properly by |
| 80 | + // creating and executing a FetchValue operation |
| 81 | + FetchValue fetchOp = new FetchValue.Builder(quoteObjectLocation) |
| 82 | + .build(); |
| 83 | + RiakObject fetchedObject = client.execute(fetchOp).getValue(RiakObject.class); |
| 84 | + assert(fetchedObject.getValue().equals(quoteObject.getValue())); |
| 85 | + System.out.println("Success! The object we created and the object we fetched have the same value"); |
| 86 | + |
| 87 | + // And we'll delete the object |
| 88 | + DeleteValue deleteOp = new DeleteValue.Builder(quoteObjectLocation) |
| 89 | + .build(); |
| 90 | + client.execute(deleteOp); |
| 91 | + System.out.println("Quote object successfully deleted"); |
| 92 | + |
| 93 | + Book mobyDick = new Book(); |
| 94 | + mobyDick.title = "Moby Dick"; |
| 95 | + mobyDick.author = "Herman Melville"; |
| 96 | + mobyDick.body = "Call me Ishmael. Some years ago..."; |
| 97 | + mobyDick.isbn = "1111979723"; |
| 98 | + mobyDick.copiesOwned = 3; |
| 99 | + System.out.println("Book object created"); |
| 100 | + |
| 101 | + // Now we'll assign a Location for the book, create a StoreValue |
| 102 | + // operation, and store the book |
| 103 | + Namespace booksBucket = new Namespace("books"); |
| 104 | + Location mobyDickLocation = new Location(booksBucket, "moby_dick"); |
| 105 | + StoreValue storeBookOp = new StoreValue.Builder(mobyDick) |
| 106 | + .withLocation(mobyDickLocation) |
| 107 | + .build(); |
| 108 | + client.execute(storeBookOp); |
| 109 | + System.out.println("Moby Dick information now stored in Riak"); |
| 110 | + |
| 111 | + // And we'll verify that we can fetch the info about Moby Dick and |
| 112 | + // that that info will match the object we created initially |
| 113 | + FetchValue fetchMobyDickOp = new FetchValue.Builder(mobyDickLocation) |
| 114 | + .build(); |
| 115 | + Book fetchedBook = client.execute(fetchMobyDickOp).getValue(Book.class); |
| 116 | + System.out.println("Book object successfully fetched"); |
| 117 | + |
| 118 | + assert(mobyDick.getClass() == fetchedBook.getClass()); |
| 119 | + assert(mobyDick.title.equals(fetchedBook.title)); |
| 120 | + assert(mobyDick.author.equals(fetchedBook.author)); |
| 121 | + // And so on... |
| 122 | + System.out.println("Success! All of our tests check out"); |
| 123 | + |
| 124 | + // Now that we're all finished, we should shut our cluster object down |
| 125 | + cluster.shutdown(); |
| 126 | + |
| 127 | + } catch (Exception e) { |
| 128 | + System.out.println(e.getMessage()); |
| 129 | + } |
| 130 | + } |
| 131 | +} |
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