Examples of org.apache.accumulo.core.client.ConditionalWriterConfig

org.apache.accumulo.core.client.ConditionalWriterConfig
@since 1.6.0


    ConditionalMutation cm1 = new ConditionalMutation("r1", new Condition("tx", "seq"));
    cm1.put("tx", "seq", "1");
    cm1.put("data", "x", "a");


    ConditionalWriter cw1 = conn2.createConditionalWriter("sect1", new ConditionalWriterConfig());
    ConditionalWriter cw2 = conn2.createConditionalWriter("sect2", new ConditionalWriterConfig());
    ConditionalWriter cw3 = conn2.createConditionalWriter("sect3", new ConditionalWriterConfig());


    Assert.assertEquals(Status.ACCEPTED, cw3.write(cm1).getStatus());


    try {
      cw1.write(cm1).getStatus();

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    String table = getUniqueNames(1)[0];


    conn.tableOperations().create(table);


    ConditionalWriter cw = conn.createConditionalWriter(table, new ConditionalWriterConfig().setTimeout(3, TimeUnit.SECONDS));


    ConditionalMutation cm1 = new ConditionalMutation("r1", new Condition("tx", "seq"));
    cm1.put("tx", "seq", "1");
    cm1.put("data", "x", "a");

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  public void testDeleteTable() throws Exception {
    String table = getUniqueNames(1)[0];
    Connector conn = getConnector();


    try {
      conn.createConditionalWriter(table, new ConditionalWriterConfig());
      Assert.assertFalse(true);
    } catch (TableNotFoundException e) {}


    conn.tableOperations().create(table);


    ConditionalWriter cw = conn.createConditionalWriter(table, new ConditionalWriterConfig());


    conn.tableOperations().delete(table);


    ConditionalMutation cm1 = new ConditionalMutation("r1", new Condition("tx", "seq"));
    cm1.put("tx", "seq", "1");

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    String table = getUniqueNames(1)[0];
    Connector conn = getConnector();


    conn.tableOperations().create(table);


    ConditionalWriter cw = conn.createConditionalWriter(table, new ConditionalWriterConfig());


    conn.tableOperations().offline(table, true);


    ConditionalMutation cm1 = new ConditionalMutation("r1", new Condition("tx", "seq"));
    cm1.put("tx", "seq", "1");
    cm1.put("data", "x", "a");


    Result result = cw.write(cm1);


    try {
      result.getStatus();
      Assert.assertFalse(true);
    } catch (AccumuloException ae) {
      Assert.assertEquals(TableOfflineException.class, ae.getCause().getClass());
    }


    cw.close();


    try {
      conn.createConditionalWriter(table, new ConditionalWriterConfig());
      Assert.assertFalse(true);
    } catch (TableOfflineException e) {}
  }

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    String table = getUniqueNames(1)[0];
    Connector conn = getConnector();


    conn.tableOperations().create(table);


    ConditionalWriter cw = conn.createConditionalWriter(table, new ConditionalWriterConfig());


    IteratorSetting iterSetting = new IteratorSetting(5, BadIterator.class);


    ConditionalMutation cm1 = new ConditionalMutation("r1", new Condition("tx", "seq").setIterators(iterSetting));
    cm1.put("tx", "seq", "1");

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    String table = getUniqueNames(1)[0];
    Connector conn = getConnector();


    conn.tableOperations().create(table);


    ConditionalWriter cw = conn.createConditionalWriter(table, new ConditionalWriterConfig());


    ConditionalMutation cm1 = new ConditionalMutation("r1");
    cm1.put("tx", "seq", "1");
    cm1.put("data", "x", "a");

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    conn.tableOperations().create(tableName);
    conn.tableOperations().deleteRows("trace", null, null);


    DistributedTrace.enable(conn.getInstance(), new ZooReader(conn.getInstance().getZooKeepers(), 30*1000), "testTrace", "localhost");
    Span root = Trace.on("traceTest");
    ConditionalWriter cw = conn.createConditionalWriter(tableName, new ConditionalWriterConfig());


    // mutation conditional on column tx:seq not exiting
    ConditionalMutation cm0 = new ConditionalMutation("99006", new Condition("tx", "seq"));
    cm0.put("name", "last", "doe");
    cm0.put("name", "first", "john");

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    update.put("tx", "seq", "0");
    update.put("res", String.format("%04d", 0), who);
    
    ReservationResult result = ReservationResult.RESERVED;
    
    ConditionalWriter cwriter = conn.createConditionalWriter(rTable, new ConditionalWriterConfig());
    
    try {
      while (true) {
        Status status = cwriter.write(update).getStatus();
        switch (status) {

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    // Even though this method is only deleting a column, its important to use a conditional writer. By updating the seq # when deleting a reservation, it
    // will cause any concurrent reservations to retry. If this delete were done using a batch writer, then a concurrent reservation could report WAIT_LISTED
    // when it actually got the reservation.
    
    ConditionalWriter cwriter = conn.createConditionalWriter(rTable, new ConditionalWriterConfig());
    
    try {
      while (true) {
        
        // its important to use an isolated scanner so that only whole mutations are seen

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    Connector conn = getConnector();
    String tableName = getUniqueNames(1)[0];


    conn.tableOperations().create(tableName);


    ConditionalWriter cw = conn.createConditionalWriter(tableName, new ConditionalWriterConfig());
    
    // mutation conditional on column tx:seq not existing
    ConditionalMutation cm0 = new ConditionalMutation("99006", new Condition("tx", "seq"));
    cm0.put("name", "last", "doe");
    cm0.put("name", "first", "john");

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