Examples of com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient

Package com.amazonaws.services.dynamodbv2

Examples of com.amazonaws.services.dynamodbv2.AmazonDynamoDBClient

com.amazonaws.services.dynamodbv2.model.DeleteItemRequest
Client for accessing AmazonDynamoDBv2. All service calls made using this client are blocking, and will not return until the service call completes.
Amazon DynamoDB Overview
This is the Amazon DynamoDB API Reference. This guide provides descriptions and samples of the Amazon DynamoDB API.

                    .withN(item.get(key).getN())
                    .withNS(item.get(key).getNS())
                    .withS(item.get(key).getS())
                    .withSS(item.get(key).getSS());
            } else {
                updateValues.put(key, new AttributeValueUpdate(item.get(key), "PUT"));
            }
        }
        return updateValues;
    }

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                 * Otherwise apply the update value for this attribute.
                 */
                else  {
                    AttributeValue currentValue = getSimpleAttributeValue(method, getterResult);
                    if ( currentValue != null ) {
                        updateValues.put(attributeName, new AttributeValueUpdate().withValue(currentValue)
                                .withAction("PUT"));
                        nonKeyAttributePresent = true;
                    } else {
                        onNullNonKeyAttribute(attributeName);
                    }

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        private void onAutoGenerateAssignableKey(Method method, String attributeName) {
            AttributeValue newVersionValue = getAutoGeneratedKeyAttributeValue(method, null);
            
            updateValues.put(attributeName,
                    new AttributeValueUpdate().withAction("PUT").withValue(newVersionValue));
            inMemoryUpdates.add(new ValueUpdate(method, newVersionValue, object));
            
            if ( getLocalSaveBehavior() != SaveBehavior.CLOBBER ) {
                // Add an expect clause to make sure that the item
                // doesn't already exist, since it's supposed to be new

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                expectedValues.put(attributeName, expected);
            }


            AttributeValue newVersionValue = getVersionAttributeValue(method, getterResult);
            updateValues
                    .put(attributeName, new AttributeValueUpdate().withAction("PUT").withValue(newVersionValue));
            inMemoryUpdates.add(new ValueUpdate(method, newVersionValue, object));
        }

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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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                    break;
                }
            }
        }


        db.deleteItem(applyUserAgent(new DeleteItemRequest().withKey(key).withTableName(tableName).withExpected(expectedValues)));
    }

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