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

Example 36 with AmazonDynamoDB

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

the class DeleteItem method main.

public static void main(String[] args) {
    final String USAGE = "\n" + "Usage:\n" + "    DeleteItem <table> <name>\n\n" + "Where:\n" + "    table - the table to delete the item from.\n" + "    name  - the item to delete from the table,\n" + "            using the primary key \"Name\"\n\n" + "Example:\n" + "    DeleteItem HelloTable World\n\n" + "**Warning** This program will actually delete the item\n" + "            that you specify!\n";
    if (args.length < 2) {
        System.out.println(USAGE);
        System.exit(1);
    }
    String table_name = args[0];
    String name = args[1];
    System.out.format("Deleting item \"%s\" from %s\n", name, table_name);
    HashMap<String, AttributeValue> key_to_get = new HashMap<String, AttributeValue>();
    key_to_get.put("Name", new AttributeValue(name));
    final AmazonDynamoDB ddb = AmazonDynamoDBClientBuilder.defaultClient();
    try {
        ddb.deleteItem(table_name, key_to_get);
    } catch (AmazonServiceException e) {
        System.err.println(e.getErrorMessage());
        System.exit(1);
    }
    System.out.println("Done!");
}

Example 37 with AmazonDynamoDB

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

the class DescribeTable method main.

public static void main(String[] args) {
    final String USAGE = "\n" + "Usage:\n" + "    DescribeTable <table>\n\n" + "Where:\n" + "    table - the table to get information about.\n\n" + "Example:\n" + "    DescribeTable HelloTable\n";
    if (args.length < 1) {
        System.out.println(USAGE);
        System.exit(1);
    }
    String table_name = args[0];
    System.out.format("Getting description for %s\n\n", table_name);
    final AmazonDynamoDB ddb = AmazonDynamoDBClientBuilder.defaultClient();
    try {
        TableDescription table_info = ddb.describeTable(table_name).getTable();
        if (table_info != null) {
            System.out.format("Table name  : %s\n", table_info.getTableName());
            System.out.format("Table ARN   : %s\n", table_info.getTableArn());
            System.out.format("Status      : %s\n", table_info.getTableStatus());
            System.out.format("Item count  : %d\n", table_info.getItemCount().longValue());
            System.out.format("Size (bytes): %d\n", table_info.getTableSizeBytes().longValue());
            ProvisionedThroughputDescription throughput_info = table_info.getProvisionedThroughput();
            System.out.println("Throughput");
            System.out.format("  Read Capacity : %d\n", throughput_info.getReadCapacityUnits().longValue());
            System.out.format("  Write Capacity: %d\n", throughput_info.getWriteCapacityUnits().longValue());
            List<AttributeDefinition> attributes = table_info.getAttributeDefinitions();
            System.out.println("Attributes");
            for (AttributeDefinition a : attributes) {
                System.out.format("  %s (%s)\n", a.getAttributeName(), a.getAttributeType());
            }
        }
    } catch (AmazonServiceException e) {
        System.err.println(e.getErrorMessage());
        System.exit(1);
    }
    System.out.println("\nDone!");
}

Example 38 with AmazonDynamoDB

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

the class DeleteTable method main.

public static void main(String[] args) {
    final String USAGE = "\n" + "Usage:\n" + "    DeleteTable <table>\n\n" + "Where:\n" + "    table - the table to delete.\n\n" + "Example:\n" + "    DeleteTable Greetings\n\n" + "**Warning** This program will actually delete the table\n" + "            that you specify!\n";
    if (args.length < 1) {
        System.out.println(USAGE);
        System.exit(1);
    }
    String table_name = args[0];
    System.out.format("Deleting table %s...\n", table_name);
    final AmazonDynamoDB ddb = AmazonDynamoDBClientBuilder.defaultClient();
    try {
        ddb.deleteTable(table_name);
    } catch (AmazonServiceException e) {
        System.err.println(e.getErrorMessage());
        System.exit(1);
    }
    System.out.println("Done!");
}

Example 39 with AmazonDynamoDB

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

the class DynamoDBScanItems method main.

public static void main(String[] args) {
    if (args.length < 1) {
        System.out.println("Please specify a table name");
        System.exit(1);
    }
    // snippet-start:[dynamodb.java.dynamoDB_scan.main]
    String tableName = args[0];
    AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard().build();
    try {
        ScanRequest scanRequest = new ScanRequest().withTableName(tableName);
        ScanResult result = client.scan(scanRequest);
        for (Map<String, AttributeValue> item : result.getItems()) {
            Set<String> keys = item.keySet();
            for (String key : keys) {
                System.out.println("The key name is " + key + "\n");
                System.out.println("The value is " + item.get(key).getS());
            }
        }
    } catch (AmazonDynamoDBException e) {
        e.getStackTrace();
    }
// snippet-end:[dynamodb.java.dynamoDB_scan.main]
}

Example 40 with AmazonDynamoDB

use of com.amazonaws.services.dynamodbv2.AmazonDynamoDB in project java-design-patterns by iluwatar.

the class AbstractDynamoDbHandler method initAmazonDynamoDb.

private void initAmazonDynamoDb() {
    var amazonDynamoDb = AmazonDynamoDBClientBuilder.standard().withRegion(Regions.US_EAST_1).build();
    this.dynamoDbMapper = new DynamoDBMapper(amazonDynamoDb);
}