Examples of org.apache.accumulo.core.data.Condition

org.apache.accumulo.core.data.Condition
Conditions that must be met on a particular column in a row. @since 1.6.0

        break;
    }


    ArrayList<ConditionalMutation> mutations = new ArrayList<ConditionalMutation>();


    ConditionalMutation cm0 = new ConditionalMutation("99006", new Condition("tx", "seq").setVisibility(cvaob));
    cm0.put("name+", "last", cvaob, "doe");
    cm0.put("name", "first", cvaob, "john");
    cm0.put("tx", "seq", cvaob, "1");
    mutations.add(cm0);


    ConditionalMutation cm1 = new ConditionalMutation("59056", new Condition("tx", "seq").setVisibility(cvaab));
    cm1.put("name", "last", cvaab, "doe");
    cm1.put("name", "first", cvaab, "jane");
    cm1.put("tx", "seq", cvaab, "1");
    mutations.add(cm1);


    ConditionalMutation cm2 = new ConditionalMutation("19059", new Condition("tx", "seq").setVisibility(cvaob));
    cm2.put("name", "last", cvaob, "doe");
    cm2.put("name", "first", cvaob, "jack");
    cm2.put("tx", "seq", cvaob, "1");
    mutations.add(cm2);


    ConditionalMutation cm3 = new ConditionalMutation("90909", new Condition("tx", "seq").setVisibility(cvaob).setValue("1"));
    cm3.put("name", "last", cvaob, "doe");
    cm3.put("name", "first", cvaob, "john");
    cm3.put("tx", "seq", cvaob, "2");
    mutations.add(cm3);

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    conn.tableOperations().create(tableName);


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


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


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


    ConditionalMutation cm2 = new ConditionalMutation("r1", new Condition("tx", "seq").setValue("1"));
    cm2.put("tx", "seq", "2");
    cm2.put("data", "x", "b");


    ConditionalMutation cm3 = new ConditionalMutation("r1", new Condition("tx", "seq").setValue("1"));
    cm3.put("tx", "seq", "2");
    cm3.put("data", "x", "c");


    ConditionalMutation cm4 = new ConditionalMutation("r1", new Condition("tx", "seq").setValue("1"));
    cm4.put("tx", "seq", "2");
    cm4.put("data", "x", "d");


    Iterator<Result> results = cw.write(Arrays.asList(cm2, cm3, cm4).iterator());

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    conn.securityOperations().grantTablePermission("user1", "sect3", TablePermission.READ);
    conn.securityOperations().grantTablePermission("user1", "sect3", TablePermission.WRITE);


    Connector conn2 = getConnector().getInstance().getConnector("user1", new PasswordToken("u1p"));


    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());

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    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");


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


    IteratorSetting is = new IteratorSetting(5, SlowIterator.class);
    SlowIterator.setSeekSleepTime(is, 5000);


    ConditionalMutation cm2 = new ConditionalMutation("r1", new Condition("tx", "seq").setValue("1").setIterators(is));
    cm2.put("tx", "seq", "2");
    cm2.put("data", "x", "b");


    Assert.assertEquals(cw.write(cm2).getStatus(), Status.UNKNOWN);


    Scanner scanner = conn.createScanner(table, Authorizations.EMPTY);


    for (Entry<Key,Value> entry : scanner) {
      String cf = entry.getKey().getColumnFamilyData().toString();
      String cq = entry.getKey().getColumnQualifierData().toString();
      String val = entry.getValue().toString();


      if (cf.equals("tx") && cq.equals("seq"))
        Assert.assertEquals("1", val);
      else if (cf.equals("data") && cq.equals("x"))
        Assert.assertEquals("a", val);
      else
        Assert.fail();
    }


    ConditionalMutation cm3 = new ConditionalMutation("r1", new Condition("tx", "seq").setValue("1"));
    cm3.put("tx", "seq", "2");
    cm3.put("data", "x", "b");


    Assert.assertEquals(cw.write(cm3).getStatus(), Status.ACCEPTED);

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    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");
    cm1.put("data", "x", "a");


    Result result = cw.write(cm1);

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    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);

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    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");
    cm1.put("data", "x", "a");


    Result result = cw.write(cm1);

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    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");
    cm0.put("tx", "seq", "1");
    Assert.assertEquals(Status.ACCEPTED, cw.write(cm0).getStatus());
    root.stop();

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      sum += value;
      data[index] = value;
    }


    ConditionalMutation toMutation() {
      Condition cond = new Condition("meta", "seq");
      if (seq >= 0)
        cond.setValue(seq + "");


      ConditionalMutation cm = new ConditionalMutation(row, cond);


      cm.put("meta", "seq", (seq + 1) + "");
      cm.put("meta", "sum", (sum) + "");

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    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");
    cm0.put("tx", "seq", "1");
    Assert.assertEquals(Status.ACCEPTED, cw.write(cm0).getStatus());
    Assert.assertEquals(Status.REJECTED, cw.write(cm0).getStatus());


    // mutation conditional on column tx:seq being 1
    ConditionalMutation cm1 = new ConditionalMutation("99006", new Condition("tx", "seq").setValue("1"));
    cm1.put("name", "last", "Doe");
    cm1.put("tx", "seq", "2");
    Assert.assertEquals(Status.ACCEPTED, cw.write(cm1).getStatus());


    // test condition where value differs
    ConditionalMutation cm2 = new ConditionalMutation("99006", new Condition("tx", "seq").setValue("1"));
    cm2.put("name", "last", "DOE");
    cm2.put("tx", "seq", "2");
    Assert.assertEquals(Status.REJECTED, cw.write(cm2).getStatus());


    // test condition where column does not exists
    ConditionalMutation cm3 = new ConditionalMutation("99006", new Condition("txtypo", "seq").setValue("1"));
    cm3.put("name", "last", "deo");
    cm3.put("tx", "seq", "2");
    Assert.assertEquals(Status.REJECTED, cw.write(cm3).getStatus());


    // test two conditions, where one should fail
    ConditionalMutation cm4 = new ConditionalMutation("99006", new Condition("tx", "seq").setValue("2"), new Condition("name", "last").setValue("doe"));
    cm4.put("name", "last", "deo");
    cm4.put("tx", "seq", "3");
    Assert.assertEquals(Status.REJECTED, cw.write(cm4).getStatus());


    // test two conditions, where one should fail
    ConditionalMutation cm5 = new ConditionalMutation("99006", new Condition("tx", "seq").setValue("1"), new Condition("name", "last").setValue("Doe"));
    cm5.put("name", "last", "deo");
    cm5.put("tx", "seq", "3");
    Assert.assertEquals(Status.REJECTED, cw.write(cm5).getStatus());


    // ensure rejected mutations did not write
    Scanner scanner = conn.createScanner(tableName, Authorizations.EMPTY);
    scanner.fetchColumn(new Text("name"), new Text("last"));
    scanner.setRange(new Range("99006"));
    Assert.assertEquals("Doe", scanner.iterator().next().getValue().toString());


    // test w/ two conditions that are met
    ConditionalMutation cm6 = new ConditionalMutation("99006", new Condition("tx", "seq").setValue("2"), new Condition("name", "last").setValue("Doe"));
    cm6.put("name", "last", "DOE");
    cm6.put("tx", "seq", "3");
    Assert.assertEquals(Status.ACCEPTED, cw.write(cm6).getStatus());


    Assert.assertEquals("DOE", scanner.iterator().next().getValue().toString());


    // test a conditional mutation that deletes
    ConditionalMutation cm7 = new ConditionalMutation("99006", new Condition("tx", "seq").setValue("3"));
    cm7.putDelete("name", "last");
    cm7.putDelete("name", "first");
    cm7.putDelete("tx", "seq");
    Assert.assertEquals(Status.ACCEPTED, cw.write(cm7).getStatus());

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