Examples with Expression com.aerospike.client.exp.Expression used on opensource projects

Example 1 with Expression

use of com.aerospike.client.exp.Expression in project aerospike-client-java by aerospike.

the class BatchOperate method batchReadOperateComplex.

/**
 * Read results using varying read operations in one batch.
 */
private void batchReadOperateComplex(AerospikeClient client, Parameters params) {
    console.info("batchReadOperateComplex");
    Expression exp1 = Exp.build(Exp.mul(Exp.intBin(BinName1), Exp.intBin(BinName2)));
    Expression exp2 = Exp.build(Exp.add(Exp.intBin(BinName1), Exp.intBin(BinName2)));
    Expression exp3 = Exp.build(Exp.sub(Exp.intBin(BinName1), Exp.intBin(BinName2)));
    // Batch uses pointer reference to quickly determine if operations are repeated and can therefore
    // be optimized, but using varargs directly always creates a new reference. Therefore, save operation
    // array so we have one pointer reference per operation array.
    Operation[] ops1 = Operation.array(ExpOperation.read(ResultName1, exp1, ExpReadFlags.DEFAULT));
    Operation[] ops2 = Operation.array(ExpOperation.read(ResultName1, exp2, ExpReadFlags.DEFAULT));
    Operation[] ops3 = Operation.array(ExpOperation.read(ResultName1, exp3, ExpReadFlags.DEFAULT));
    Operation[] ops4 = Operation.array(ExpOperation.read(ResultName1, exp2, ExpReadFlags.DEFAULT), ExpOperation.read(ResultName2, exp3, ExpReadFlags.DEFAULT));
    List<BatchRead> records = new ArrayList<BatchRead>();
    records.add(new BatchRead(new Key(params.namespace, params.set, KeyPrefix + 1), ops1));
    // The following record is optimized (namespace,set,ops are only sent once) because
    // namespace, set and ops all have the same pointer references as the previous entry.
    records.add(new BatchRead(new Key(params.namespace, params.set, KeyPrefix + 2), ops1));
    records.add(new BatchRead(new Key(params.namespace, params.set, KeyPrefix + 3), ops2));
    records.add(new BatchRead(new Key(params.namespace, params.set, KeyPrefix + 4), ops3));
    records.add(new BatchRead(new Key(params.namespace, params.set, KeyPrefix + 5), ops4));
    // Execute batch.
    client.get(null, records);
    // Show results.
    int count = 0;
    for (BatchRead record : records) {
        Record rec = record.record;
        Object v1 = rec.getValue(ResultName1);
        Object v2 = rec.getValue(ResultName2);
        console.info("Result[%d]: %s, %s", count++, v1, v2);
    }
}

Example 2 with Expression

use of com.aerospike.client.exp.Expression in project aerospike-client-java by aerospike.

the class TestBatch method batchReadComplex.

@Test
public void batchReadComplex() {
    // Batch allows multiple namespaces in one call, but example test environment may only have one namespace.
    // bin * 8
    Expression exp = Exp.build(Exp.mul(Exp.intBin(BinName), Exp.val(8)));
    Operation[] ops = Operation.array(ExpOperation.read(BinName, exp, ExpReadFlags.DEFAULT));
    String[] bins = new String[] { BinName };
    List<BatchRead> records = new ArrayList<BatchRead>();
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 1), bins));
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 2), true));
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 3), true));
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 4), false));
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 5), true));
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 6), ops));
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 7), bins));
    // This record should be found, but the requested bin will not be found.
    records.add(new BatchRead(new Key(args.namespace, args.set, KeyPrefix + 8), new String[] { "binnotfound" }));
    // This record should not be found.
    records.add(new BatchRead(new Key(args.namespace, args.set, "keynotfound"), bins));
    // Execute batch.
    client.get(null, records);
    assertBatchBinEqual(records, BinName, 0);
    assertBatchBinEqual(records, BinName, 1);
    assertBatchBinEqual(records, BinName, 2);
    assertBatchRecordExists(records, BinName, 3);
    assertBatchBinEqual(records, BinName, 4);
    BatchRead batch = records.get(5);
    assertRecordFound(batch.key, batch.record);
    int v = batch.record.getInt(BinName);
    assertEquals(48, v);
    assertBatchBinEqual(records, BinName, 6);
    batch = records.get(7);
    assertRecordFound(batch.key, batch.record);
    Object val = batch.record.getValue("binnotfound");
    if (val != null) {
        fail("Unexpected batch bin value received");
    }
    batch = records.get(8);
    if (batch.record != null) {
        fail("Unexpected batch record received");
    }
}

Example 3 with Expression

use of com.aerospike.client.exp.Expression in project aerospike-client-java by aerospike.

the class TestQueryExecute method queryExecuteOperateExp.

@Test
public void queryExecuteOperateExp() {
    String binName = "foo";
    Expression exp = Exp.build(Exp.val("bar"));
    int begin = 3;
    int end = 9;
    Statement stmt = new Statement();
    stmt.setNamespace(args.namespace);
    stmt.setSetName(args.set);
    stmt.setFilter(Filter.range(binName1, begin, end));
    ExecuteTask task = client.execute(null, stmt, ExpOperation.write(binName, exp, ExpWriteFlags.DEFAULT));
    task.waitTillComplete(3000, 3000);
    stmt = new Statement();
    stmt.setNamespace(args.namespace);
    stmt.setSetName(args.set);
    stmt.setFilter(Filter.range(binName1, begin, end));
    RecordSet rs = client.query(null, stmt);
    try {
        int count = 0;
        while (rs.next()) {
            Record record = rs.getRecord();
            String value = record.getString(binName);
            if (value == null) {
                fail("Bin " + binName + " not found");
            }
            if (!value.equals("bar")) {
                fail("Data mismatch. Expected bar. Received " + value);
            }
            count++;
        }
        assertEquals(end - begin + 1, count);
    } finally {
        rs.close();
    }
}

Example 4 with Expression

use of com.aerospike.client.exp.Expression in project aerospike-client-java by aerospike.

the class TestListExp method expReturnsList.

@Test
public void expReturnsList() {
    List<Value> list = new ArrayList<Value>();
    list.add(Value.get("a"));
    list.add(Value.get("b"));
    list.add(Value.get("c"));
    list.add(Value.get("d"));
    Expression exp = Exp.build(Exp.val(list));
    Record record = client.operate(null, keyA, ExpOperation.write(binC, exp, ExpWriteFlags.DEFAULT), Operation.get(binC), ExpOperation.read("var", exp, ExpReadFlags.DEFAULT));
    // System.out.println(record);
    List<?> results = record.getList(binC);
    assertEquals(2, results.size());
    List<?> rlist = (List<?>) results.get(1);
    assertEquals(4, rlist.size());
    List<?> results2 = record.getList("var");
    assertEquals(4, results2.size());
}

Example 5 with Expression

use of com.aerospike.client.exp.Expression in project aerospike-client-java by aerospike.

the class TestExpOperation method expMerge.

@Test
public void expMerge() {
    Expression e = Exp.build(Exp.eq(Exp.intBin(binA), Exp.val(0)));
    Expression eand = Exp.build(Exp.and(Exp.expr(e), Exp.eq(Exp.intBin(binD), Exp.val(2))));
    Expression eor = Exp.build(Exp.or(Exp.expr(e), Exp.eq(Exp.intBin(binD), Exp.val(2))));
    Record record = client.operate(null, keyA, ExpOperation.read("res1", eand, ExpReadFlags.DEFAULT), ExpOperation.read("res2", eor, ExpReadFlags.DEFAULT));
    assertRecordFound(keyA, record);
    boolean res1 = record.getBoolean("res1");
    assertFalse(res1);
    boolean res2 = record.getBoolean("res2");
    assertTrue(res2);
}