Examples with Result com.scalar.db.api.Result used on opensource projects

Example 86 with Result

use of com.scalar.db.api.Result in project scalardb by scalar-labs.

the class DistributedTransactionServiceWithJdbcTransactionIntegrationTest method get_GetGivenForNonExisting_ShouldReturnEmpty.

@Test
public void get_GetGivenForNonExisting_ShouldReturnEmpty() throws TransactionException {
    // Arrange
    populateRecords();
    GrpcTransaction transaction = manager.start();
    Get get = prepareGet(0, 4, NAMESPACE, TABLE);
    // Act
    Optional<Result> result = transaction.get(get);
    transaction.commit();
    // Assert
    assertThat(result.isPresent()).isFalse();
}

Example 87 with Result

use of com.scalar.db.api.Result in project scalardb by scalar-labs.

the class DistributedTransactionServiceWithJdbcTransactionIntegrationTest method putAndCommit_GetsAndPutsGiven_ShouldCommitProperly.

@Test
public void putAndCommit_GetsAndPutsGiven_ShouldCommitProperly() throws TransactionException {
    // Arrange
    populateRecords();
    List<Get> gets = prepareGets(NAMESPACE, TABLE);
    int amount = 100;
    int fromBalance = INITIAL_BALANCE - amount;
    int toBalance = INITIAL_BALANCE + amount;
    int from = 0;
    int to = NUM_TYPES;
    // Act
    prepareTransfer(from, to, amount).commit();
    // Assert
    GrpcTransaction another = null;
    try {
        another = manager.start();
        Optional<Result> fromResult = another.get(gets.get(from));
        assertThat(fromResult).isPresent();
        assertThat(getBalance(fromResult.get())).isEqualTo(fromBalance);
        Optional<Result> toResult = another.get(gets.get(to));
        assertThat(toResult).isPresent();
        assertThat(getBalance(toResult.get())).isEqualTo(toBalance);
    } finally {
        if (another != null) {
            another.commit();
        }
    }
}

Example 88 with Result

use of com.scalar.db.api.Result in project scalardb by scalar-labs.

the class DistributedTransactionServiceWithConsensusCommitIntegrationTest method putAndCommit_GetsAndPutsForSameKeyButDifferentTablesGiven_ShouldCommitBoth.

@Test
public void putAndCommit_GetsAndPutsForSameKeyButDifferentTablesGiven_ShouldCommitBoth() throws TransactionException {
    // Arrange
    int expected = INITIAL_BALANCE;
    List<Put> puts1 = preparePuts(TABLE_1);
    List<Put> puts2 = preparePuts(TABLE_2);
    int from = 0;
    int to = NUM_TYPES;
    int anotherFrom = from;
    int anotherTo = to;
    puts1.get(from).withValue(BALANCE, expected);
    puts1.get(to).withValue(BALANCE, expected);
    // Act Assert
    GrpcTransaction transaction = manager.start();
    transaction.put(puts1.get(from));
    transaction.put(puts1.get(to));
    GrpcTransaction conflictingTransaction = manager.start();
    puts2.get(from).withValue(BALANCE, expected);
    puts2.get(to).withValue(BALANCE, expected);
    assertThatCode(() -> {
        conflictingTransaction.put(puts2.get(anotherFrom));
        conflictingTransaction.put(puts2.get(anotherTo));
        conflictingTransaction.commit();
    }).doesNotThrowAnyException();
    assertThatCode(transaction::commit).doesNotThrowAnyException();
    // Assert
    List<Get> gets1 = prepareGets(TABLE_1);
    List<Get> gets2 = prepareGets(TABLE_2);
    GrpcTransaction another = manager.start();
    Optional<Result> fromResult = another.get(gets1.get(from));
    assertThat(fromResult).isPresent();
    assertThat(getBalance(fromResult.get())).isEqualTo(expected);
    Optional<Result> toResult = another.get(gets1.get(to));
    assertThat(toResult).isPresent();
    assertThat(getBalance(toResult.get())).isEqualTo(expected);
    Optional<Result> anotherFromResult = another.get(gets2.get(anotherFrom));
    assertThat(anotherFromResult).isPresent();
    assertThat(getBalance(anotherFromResult.get())).isEqualTo(expected);
    Optional<Result> anotherToResult = another.get(gets2.get(anotherTo));
    assertThat(anotherToResult).isPresent();
    assertThat(getBalance(anotherToResult.get())).isEqualTo(expected);
    another.commit();
}

Example 89 with Result

use of com.scalar.db.api.Result in project scalardb by scalar-labs.

the class DistributedTransactionServiceWithConsensusCommitIntegrationTest method getAndScan_CommitHappenedInBetween_ShouldReadRepeatably.

@Test
public void getAndScan_CommitHappenedInBetween_ShouldReadRepeatably() throws TransactionException {
    // Arrange
    GrpcTransaction transaction = manager.start();
    transaction.put(preparePut(0, 0, TABLE_1).withValue(BALANCE, 1));
    transaction.commit();
    GrpcTransaction transaction1 = manager.start();
    Optional<Result> result1 = transaction1.get(prepareGet(0, 0, TABLE_1));
    GrpcTransaction transaction2 = manager.start();
    transaction2.get(prepareGet(0, 0, TABLE_1));
    transaction2.put(preparePut(0, 0, TABLE_1).withValue(BALANCE, 2));
    transaction2.commit();
    // Act
    Result result2 = transaction1.scan(prepareScan(0, 0, 0, TABLE_1)).get(0);
    Optional<Result> result3 = transaction1.get(prepareGet(0, 0, TABLE_1));
    transaction1.commit();
    // Assert
    assertThat(result1).isPresent();
    assertThat(result1.get()).isEqualTo(result2);
    assertThat(result1).isEqualTo(result3);
}

Example 90 with Result

use of com.scalar.db.api.Result in project scalardb by scalar-labs.

the class DistributedTransactionServiceWithConsensusCommitIntegrationTest method delete_PutCalledBefore_ShouldDelete.

@Test
public void delete_PutCalledBefore_ShouldDelete() throws TransactionException {
    // Arrange
    GrpcTransaction transaction = manager.start();
    transaction.put(preparePut(0, 0, TABLE_1).withValue(BALANCE, 1));
    transaction.commit();
    // Act
    GrpcTransaction transaction1 = manager.start();
    Get get = prepareGet(0, 0, TABLE_1);
    Optional<Result> resultBefore = transaction1.get(get);
    transaction1.put(preparePut(0, 0, TABLE_1).withValue(BALANCE, 2));
    transaction1.delete(prepareDelete(0, 0, TABLE_1));
    assertThatCode(transaction1::commit).doesNotThrowAnyException();
    // Assert
    GrpcTransaction transaction2 = manager.start();
    Optional<Result> resultAfter = transaction2.get(get);
    transaction2.commit();
    assertThat(resultBefore.isPresent()).isTrue();
    assertThat(resultAfter.isPresent()).isFalse();
}