Examples with AmazonDynamoDB com.amazonaws.services.dynamodbv2.AmazonDynamoDB used on opensource projects

Example 56 with AmazonDynamoDB

use of com.amazonaws.services.dynamodbv2.AmazonDynamoDB in project jcabi-dynamo by jcabi.

the class AwsTableTest method deletesItemFromDynamo.

/**
 * AwsTable can delete an item.
 * @throws Exception If some problem inside
 */
@Test
public void deletesItemFromDynamo() throws Exception {
    final Credentials credentials = Mockito.mock(Credentials.class);
    final AmazonDynamoDB aws = Mockito.mock(AmazonDynamoDB.class);
    Mockito.doReturn(aws).when(credentials).aws();
    Mockito.doReturn(new DeleteItemResult().withConsumedCapacity(new ConsumedCapacity().withCapacityUnits(1.0d))).when(aws).deleteItem(Mockito.any(DeleteItemRequest.class));
    Mockito.doReturn(new DescribeTableResult().withTable(new TableDescription().withKeySchema(new KeySchemaElement().withAttributeName(AwsTableTest.KEY)))).when(aws).describeTable(Mockito.any(DescribeTableRequest.class));
    final String attr = "attribute-2";
    final AttributeValue value = new AttributeValue("value-2");
    final String name = "table-name-2";
    final Table table = new AwsTable(credentials, Mockito.mock(Region.class), name);
    table.delete(new Attributes().with(attr, value));
    Mockito.verify(aws).deleteItem(DeleteItemRequest.class.cast(MockitoHamcrest.argThat(Matchers.allOf(Matchers.hasProperty(AwsTableTest.TABLE_NAME, Matchers.equalTo(name)), Matchers.hasProperty(AwsTableTest.KEY, Matchers.hasEntry(Matchers.equalTo(attr), Matchers.equalTo(value)))))));
}

Example 57 with AmazonDynamoDB

use of com.amazonaws.services.dynamodbv2.AmazonDynamoDB in project jcabi-dynamo by jcabi.

the class ScanValve method fetch.

// @checkstyle ParameterNumber (5 lines)
@Override
public Dosage fetch(final Credentials credentials, final String table, final Map<String, Condition> conditions, final Collection<String> keys) throws IOException {
    final AmazonDynamoDB aws = credentials.aws();
    try {
        final Collection<String> attrs = new HashSet<String>(Arrays.asList(this.attributes));
        attrs.addAll(keys);
        final ScanRequest request = new ScanRequest().withTableName(table).withAttributesToGet(attrs).withReturnConsumedCapacity(ReturnConsumedCapacity.TOTAL).withScanFilter(conditions).withLimit(this.limit);
        final long start = System.currentTimeMillis();
        final ScanResult result = aws.scan(request);
        Logger.info(this, // @checkstyle LineLength (1 line)
        "#items(): loaded %d item(s) from '%s' and stooped at %s, using %s, %s, in %[ms]s", result.getCount(), table, result.getLastEvaluatedKey(), conditions, new PrintableConsumedCapacity(result.getConsumedCapacity()).print(), System.currentTimeMillis() - start);
        return new ScanValve.NextDosage(credentials, request, result);
    } catch (final AmazonClientException ex) {
        throw new IOException(String.format("Failed to fetch from \"%s\" by %s and %s", table, conditions, keys), ex);
    } finally {
        aws.shutdown();
    }
}

Example 58 with AmazonDynamoDB

use of com.amazonaws.services.dynamodbv2.AmazonDynamoDB in project aws-doc-sdk-examples by awsdocs.

the class TryDaxHelper method getDynamoDBClient.

DynamoDB getDynamoDBClient() {
    System.out.println("Creating a DynamoDB client");
    AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard().withRegion(region).build();
    return new DynamoDB(client);
}

Example 59 with AmazonDynamoDB

use of com.amazonaws.services.dynamodbv2.AmazonDynamoDB in project aws-doc-sdk-examples by awsdocs.

the class TryDaxHelper method getDaxClient.

DynamoDB getDaxClient(String daxEndpoint) {
    System.out.println("Creating a DAX client with cluster endpoint " + daxEndpoint);
    AmazonDaxClientBuilder daxClientBuilder = AmazonDaxClientBuilder.standard();
    daxClientBuilder.withRegion(region).withEndpointConfiguration(daxEndpoint);
    AmazonDynamoDB client = daxClientBuilder.build();
    return new DynamoDB(client);
}

Example 60 with AmazonDynamoDB

use of com.amazonaws.services.dynamodbv2.AmazonDynamoDB in project aws-doc-sdk-examples by awsdocs.

the class GetItem method main.

public static void main(String[] args) {
    final String USAGE = "\n" + "Usage:\n" + "    GetItem <table> <name> [projection_expression]\n\n" + "Where:\n" + "    table - the table to get an item from.\n" + "    name  - the item to get.\n\n" + "You can add an optional projection expression (a quote-delimited,\n" + "comma-separated list of attributes to retrieve) to limit the\n" + "fields returned from the table.\n\n" + "Example:\n" + "    GetItem HelloTable World\n" + "    GetItem SiteColors text \"default, bold\"\n";
    if (args.length < 2) {
        System.out.println(USAGE);
        System.exit(1);
    }
    String table_name = args[0];
    String name = args[1];
    String projection_expression = null;
    // if a projection expression was included, set it.
    if (args.length == 3) {
        projection_expression = args[2];
    }
    System.out.format("Retrieving item \"%s\" from \"%s\"\n", name, table_name);
    HashMap<String, AttributeValue> key_to_get = new HashMap<String, AttributeValue>();
    key_to_get.put("DATABASE_NAME", new AttributeValue(name));
    GetItemRequest request = null;
    if (projection_expression != null) {
        request = new GetItemRequest().withKey(key_to_get).withTableName(table_name).withProjectionExpression(projection_expression);
    } else {
        request = new GetItemRequest().withKey(key_to_get).withTableName(table_name);
    }
    final AmazonDynamoDB ddb = AmazonDynamoDBClientBuilder.defaultClient();
    try {
        Map<String, AttributeValue> returned_item = ddb.getItem(request).getItem();
        if (returned_item != null) {
            Set<String> keys = returned_item.keySet();
            for (String key : keys) {
                System.out.format("%s: %s\n", key, returned_item.get(key).toString());
            }
        } else {
            System.out.format("No item found with the key %s!\n", name);
        }
    } catch (AmazonServiceException e) {
        System.err.println(e.getErrorMessage());
        System.exit(1);
    }
}