Examples with Table com.amazonaws.services.dynamodbv2.document.Table used on opensource projects

Example 71 with Table

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

the class CreateTable method main.

public static void main(String[] args) {
    final String USAGE = "\n" + "Usage:\n" + "    CreateTable <table>\n\n" + "Where:\n" + "    table - the table to create.\n\n" + "Example:\n" + "    CreateTable HelloTable\n";
    if (args.length < 1) {
        System.out.println(USAGE);
        System.exit(1);
    }
    /* Read the name from command args */
    String table_name = args[0];
    System.out.format("Creating table \"%s\" with a simple primary key: \"Name\".\n", table_name);
    CreateTableRequest request = new CreateTableRequest().withAttributeDefinitions(new AttributeDefinition("Name", ScalarAttributeType.S)).withKeySchema(new KeySchemaElement("Name", KeyType.HASH)).withProvisionedThroughput(new ProvisionedThroughput(new Long(10), new Long(10))).withTableName(table_name);
    final AmazonDynamoDB ddb = AmazonDynamoDBClientBuilder.defaultClient();
    try {
        CreateTableResult result = ddb.createTable(request);
        System.out.println(result.getTableDescription().getTableName());
    } catch (AmazonServiceException e) {
        System.err.println(e.getErrorMessage());
        System.exit(1);
    }
    System.out.println("Done!");
}

Example 72 with Table

use of com.amazonaws.services.dynamodbv2.document.Table 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 73 with Table

use of com.amazonaws.services.dynamodbv2.document.Table 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 74 with Table

use of com.amazonaws.services.dynamodbv2.document.Table in project gora by apache.

the class DynamoDBStore method readMapping.

/**
 * Reads the schema file and converts it into a data structure to be used
 *
 * @return DynamoDBMapping Object containing all necessary information to
 *         create tables
 * @throws IOException
 */
@SuppressWarnings("unchecked")
private DynamoDBMapping readMapping(String filename) throws IOException {
    DynamoDBMappingBuilder mappingBuilder = new DynamoDBMappingBuilder();
    try {
        SAXBuilder builder = new SAXBuilder();
        Document doc = builder.build(getClass().getClassLoader().getResourceAsStream(filename));
        if (doc == null || doc.getRootElement() == null)
            throw new GoraException("Unable to load " + MAPPING_FILE + ". Please check its existance!");
        Element root = doc.getRootElement();
        List<Element> tableElements = root.getChildren("table");
        boolean keys = false;
        for (Element tableElement : tableElements) {
            String tableName = tableElement.getAttributeValue("name");
            long readCapacUnits = Long.parseLong(tableElement.getAttributeValue("readcunit"));
            long writeCapacUnits = Long.parseLong(tableElement.getAttributeValue("writecunit"));
            mappingBuilder.setProvisionedThroughput(tableName, readCapacUnits, writeCapacUnits);
            LOG.debug("Basic table properties have been set: Name, and Provisioned throughput.");
            // Retrieving attributes
            List<Element> fieldElements = tableElement.getChildren("attribute");
            for (Element fieldElement : fieldElements) {
                String key = fieldElement.getAttributeValue("key");
                String attributeName = fieldElement.getAttributeValue("name");
                String attributeType = fieldElement.getAttributeValue("type");
                mappingBuilder.addAttribute(tableName, attributeName, attributeType);
                // Retrieving key's features
                if (key != null) {
                    mappingBuilder.setKeySchema(tableName, attributeName, key);
                    keys = true;
                }
            }
            LOG.debug("Attributes for table '" + tableName + "' have been read.");
            if (!keys)
                LOG.warn("Keys for table '" + tableName + "' have NOT been set.");
        }
    } catch (IOException ex) {
        LOG.error("Error while performing xml mapping.", ex.getMessage());
        throw new IOException(ex);
    } catch (Exception ex) {
        LOG.error("Error while performing xml mapping.", ex.getMessage());
        throw new RuntimeException(ex);
    }
    return mappingBuilder.build();
}

Example 75 with Table

use of com.amazonaws.services.dynamodbv2.document.Table in project gora by apache.

the class DynamoDBStore method waitForTableToBeDeleted.

/**
 * Waits up to 6 minutes to confirm if a table has been deleted or not
 *
 * @param pTableName
 */
private void waitForTableToBeDeleted(String pTableName) {
    LOG.debug("Waiting for " + pTableName + " to be deleted.");
    long startTime = System.currentTimeMillis();
    long endTime = startTime + WAIT_TIME;
    while (System.currentTimeMillis() < endTime) {
        try {
            Thread.sleep(SLEEP_DELETE_TIME);
        } catch (Exception e) {
        }
        try {
            DescribeTableRequest request = new DescribeTableRequest().withTableName(pTableName);
            TableDescription tableDescription = getDynamoDBClient().describeTable(request).getTable();
            String tableStatus = tableDescription.getTableStatus();
            LOG.debug(pTableName + " - current state: " + tableStatus);
        } catch (AmazonServiceException ase) {
            if (ase.getErrorCode().equalsIgnoreCase("ResourceNotFoundException") == true)
                return;
            LOG.error(ase.getMessage());
        }
    }
    LOG.debug(pTableName + " deleted.");
}