Examples of com.amazonaws.services.dynamodbv2.model.CreateTableRequest

Package com.amazonaws.services.dynamodbv2.model

Examples of com.amazonaws.services.dynamodbv2.model.CreateTableRequest

com.amazonaws.services.dynamodbv2.model.CreateTableRequest
Container for the parameters to the {@link com.amazonaws.services.dynamodbv2.AmazonDynamoDB#createTable(CreateTableRequest) CreateTable operation}.
The CreateTable operation adds a new table to your account. In an AWS account, table names must be unique within each region. That is, you can have two tables with same name if you create the tables in different regions.

CreateTable is an asynchronous operation. Upon receiving a CreateTable request, Amazon DynamoDB immediately returns a response with a TableStatus of CREATING . After the table is created, Amazon DynamoDB sets the TableStatus to ACTIVE . You can perform read and write operations only on an ACTIVE table.

If you want to create multiple tables with local secondary indexes on them, you must create them sequentially. Only one table with local secondary indexes can be in the CREATING state at any given time.

You can use the DescribeTable API to check the table status.
@see com.amazonaws.services.dynamodbv2.AmazonDynamoDB#createTable(CreateTableRequest)

                @Override
                protected void onKeyAttributeValue(String attributeName,
                        AttributeValue keyAttributeValue) {
                    /* Treat key values as common attribute value updates. */
                    getAttributeValueUpdates().put(attributeName,
                            new AttributeValueUpdate().withValue(keyAttributeValue)
                                    .withAction("PUT"));
                }


                @Override
                protected void onNullNonKeyAttribute(String attributeName) {
                    /* When doing a force put, we can safely ignore the null-valued attributes. */
                    return;
                }


                @Override
                protected void executeLowLevelRequest(boolean onlyKeyAttributeSpecified) {
                    /* Send a putItem request */
                    db.putItem(applyUserAgent(new PutItemRequest().withTableName(getTableName())
                            .withItem(transformAttributes(this.clazz, convertToItem(getAttributeValueUpdates())))
                            .withExpected(getExpectedAttributeValues())));
                }
            };
        } else {
            saveObjectHandler = this.new SaveObjectHandler(clazz, object,
                    tableName, config.getSaveBehavior()) {


                @Override
                protected void onKeyAttributeValue(String attributeName,
                        AttributeValue keyAttributeValue) {
                    /* Put it in the key collection which is later used in the updateItem request. */
                    getKeyAttributeValues().put(attributeName, keyAttributeValue);
                }


                @Override
                protected void onNullNonKeyAttribute(String attributeName) {
                    /*
                     * If UPDATE_SKIP_NULL_ATTRIBUTES is configured, we don't
                     * delete null value attributes.
                     */
                    if (getLocalSaveBehavior() == SaveBehavior.UPDATE_SKIP_NULL_ATTRIBUTES) {
                        return;
                    }
                    
                    else {
                        /* Delete attributes that are set as null in the object. */
                        getAttributeValueUpdates()
                                .put(attributeName,
                                        new AttributeValueUpdate()
                                                .withAction("DELETE"));
                    }
                }


                @Override

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    private void processBatchGetRequest(Map<String, Class<?>> classesByTableName,
                                        Map<String, KeysAndAttributes> requestItems,
                                        Map<String, List<Object>> resultSet) {


        BatchGetItemResult batchGetItemResult = null;
        BatchGetItemRequest batchGetItemRequest = new BatchGetItemRequest();
        batchGetItemRequest.setRequestItems(requestItems);
        do {
            if ( batchGetItemResult != null ) {
                batchGetItemRequest.setRequestItems(batchGetItemResult.getUnprocessedKeys());
            }


            batchGetItemResult = db.batchGetItem(batchGetItemRequest);
            Map<String, List<Map<String, AttributeValue>>> responses = batchGetItemResult.getResponses();
            for ( String tableName : responses.keySet() ) {

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    private void processBatchGetRequest(Map<String, Class<?>> classesByTableName,
                                        Map<String, KeysAndAttributes> requestItems,
                                        Map<String, List<Object>> resultSet) {


        BatchGetItemResult batchGetItemResult = null;
        BatchGetItemRequest batchGetItemRequest = new BatchGetItemRequest();
        batchGetItemRequest.setRequestItems(requestItems);
        do {
            if ( batchGetItemResult != null ) {
                batchGetItemRequest.setRequestItems(batchGetItemResult.getUnprocessedKeys());
            }


            batchGetItemResult = db.batchGetItem(batchGetItemRequest);
            Map<String, List<Map<String, AttributeValue>>> responses = batchGetItemResult.getResponses();
            for ( String tableName : responses.keySet() ) {
                List<Object> objects = null;
                if ( resultSet.get(tableName) != null ) {
                    objects = resultSet.get(tableName);
                } else {
                    objects = new LinkedList<Object>();
                }


                for ( Map<String, AttributeValue> item : responses.get(tableName) ) {
                    objects.add(marshallIntoObject(classesByTableName.get(tableName), item));
                }


                resultSet.put(tableName, objects);
            }
            // To see whether there are unprocessed keys.
        } while ( batchGetItemResult.getUnprocessedKeys() != null && batchGetItemResult.getUnprocessedKeys().size() > 0 );


    }

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        BatchWriteItemResult result = null;
        int retries = 0;
        FailedBatch failedBatch = null;
        while (true) {
            try {
                result = db.batchWriteItem(new BatchWriteItemRequest().withRequestItems(batch));
            } catch (Exception e) {
                failedBatch = new FailedBatch();
                failedBatch.setUnprocessedItems(batch);
                failedBatch.setException(e);
                return failedBatch;

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     * Continue trying to process the batch until it finishes or an exception
     * occurs.
     */


    private FailedBatch callUntilCompletion(Map<String, List<WriteRequest>> batch) {
        BatchWriteItemResult result = null;
        int retries = 0;
        FailedBatch failedBatch = null;
        while (true) {
            try {
                result = db.batchWriteItem(new BatchWriteItemRequest().withRequestItems(batch));
            } catch (Exception e) {
                failedBatch = new FailedBatch();
                failedBatch.setUnprocessedItems(batch);
                failedBatch.setException(e);
                return failedBatch;
            }
            retries++;
            batch = result.getUnprocessedItems();
            if (batch.size() > 0) {
                pauseExponentially(retries);
            } else {
                break;
            }

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        Map<String, Condition> conditions = new HashMap<String, Condition>();
        for ( Method getter : reflector.getKeyGetters(obj.getClass()) ) {
            if ( getter.isAnnotationPresent(DynamoDBHashKey.class) ) {
                conditions.put(
                        reflector.getAttributeName(getter),
                        new Condition().withComparisonOperator(ComparisonOperator.EQ).withAttributeValueList(
                                getSimpleAttributeValue(getter, safeInvoke(getter, obj, (Object[])null))));
            }
        }
        return conditions;
    }

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            Class<?> clazz,
            DynamoDBMapperConfig config,
            DynamoDBReflector reflector,
            ItemConverter converter) {


        CreateTableRequest createTableRequest = new CreateTableRequest();
        createTableRequest.setTableName(DynamoDBMapper.getTableName(clazz, config, reflector));


        // Primary keys
        Method pHashKeyGetter = reflector.getPrimaryHashKeyGetter(clazz);
        AttributeDefinition pHashAttrDefinition = getKeyAttributeDefinition(pHashKeyGetter, converter);
        createTableRequest.withKeySchema(new KeySchemaElement(pHashAttrDefinition.getAttributeName(), KeyType.HASH));
        // Primary range
        Method pRangeKeyGetter = reflector.getPrimaryRangeKeyGetter(clazz);
        AttributeDefinition pRangeAttrDefinition = null;
        if (pRangeKeyGetter != null) {
            pRangeAttrDefinition = getKeyAttributeDefinition(pRangeKeyGetter, converter);
            createTableRequest.withKeySchema(new KeySchemaElement(pRangeAttrDefinition.getAttributeName(), KeyType.RANGE));
        }


        // Parse the index schema
        TableIndexesInfo indexesInfo = parseTableIndexes(clazz, reflector);
        if ( indexesInfo.getGlobalSecondaryIndexes().isEmpty() == false ) {
            createTableRequest.setGlobalSecondaryIndexes(indexesInfo.getGlobalSecondaryIndexes());
        }
        if ( indexesInfo.getLocalSecondaryIndexes().isEmpty() == false ) {
            createTableRequest.setLocalSecondaryIndexes(indexesInfo.getLocalSecondaryIndexes());
        }


        // Aggregate all key attribute definitions
        Map<String, AttributeDefinition> attrDefinitions = new HashMap<String, AttributeDefinition>();
        // Hash key definition
        putAfterCheckConflict(attrDefinitions, pHashAttrDefinition);
        // Range key definition
        if (pRangeKeyGetter != null) {
            putAfterCheckConflict(attrDefinitions, pRangeAttrDefinition);
        }
        for (Method indexKeyGetter : indexesInfo.getIndexKeyGetters()) {
            AttributeDefinition indexKeyAttrDefinition = getKeyAttributeDefinition(indexKeyGetter, converter);
            putAfterCheckConflict(attrDefinitions, indexKeyAttrDefinition);
        }
        createTableRequest.setAttributeDefinitions(attrDefinitions.values());


        return createTableRequest;
    }

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            // Create table if it does not exist yet
            if (Tables.doesTableExist(dynamoDB, tableName)) {
                System.out.println("Table " + tableName + " is already ACTIVE");
            } else {
                // Create a table with a primary hash key named 'name', which holds a string
                CreateTableRequest createTableRequest = new CreateTableRequest().withTableName(tableName)
                    .withKeySchema(new KeySchemaElement().withAttributeName("name").withKeyType(KeyType.HASH))
                    .withAttributeDefinitions(new AttributeDefinition().withAttributeName("name").withAttributeType(ScalarAttributeType.S))
                    .withProvisionedThroughput(new ProvisionedThroughput().withReadCapacityUnits(1L).withWriteCapacityUnits(1L));
                    TableDescription createdTableDescription = dynamoDB.createTable(createTableRequest).getTableDescription();
                System.out.println("Created Table: " + createdTableDescription);

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            // table doesn't exist; let's create it
            KeySchemaElement hashKey = 
                new KeySchemaElement(HASH_KEY, KeyType.HASH);
            KeySchemaElement rangeKey = 
                new KeySchemaElement(RANGE_KEY, KeyType.RANGE);
            CreateTableRequest createTableRequest = 
                new CreateTableRequest(TABLE_NAME, Arrays.asList(hashKey, rangeKey))
                .withAttributeDefinitions(
                    new AttributeDefinition(HASH_KEY, ScalarAttributeType.N),
                    new AttributeDefinition(RANGE_KEY, ScalarAttributeType.S))
                .withProvisionedThroughput(
                    new ProvisionedThroughput(READ_CAPACITY, WRITE_CAPACITY));

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        // global secondary index
        String RANGE_GSI_NAME = "myRangeGSI";
        String GSI_HASH_KEY_NAME = "myGsiHashKey";
        String GSI_RANGE_KEY_NAME = "myGsiRangeKey";


        CreateTableRequest req = new CreateTableRequest()
            .withTableName(tableName)
            .withAttributeDefinitions(
                new AttributeDefinition(HASH_KEY_NAME, ScalarAttributeType.S),
                new AttributeDefinition(RANGE_KEY_NAME, ScalarAttributeType.N),
                new AttributeDefinition(LSI_RANGE_KEY_NAME, ScalarAttributeType.N),

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