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

Package com.amazonaws.services.dynamodbv2.model

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

com.amazonaws.services.dynamodbv2.model.DeleteItemRequest
Container for the parameters to the {@link com.amazonaws.services.dynamodbv2.AmazonDynamoDB#deleteItem(DeleteItemRequest) DeleteItem operation}.
Deletes a single item in a table by primary key. You can perform a conditional delete operation that deletes the item if it exists, or if it has an expected attribute value.

In addition to deleting an item, you can also return the item's attribute values in the same operation, using the ReturnValues parameter.

Unless you specify conditions, the DeleteItem is an idempotent operation; running it multiple times on the same item or attribute does not result in an error response.

Conditional deletes are useful for only deleting items if specific conditions are met. If those conditions are met, Amazon DynamoDB performs the delete. Otherwise, the item is not deleted.
@see com.amazonaws.services.dynamodbv2.AmazonDynamoDB#deleteItem(DeleteItemRequest)

    private String conditionExpression;
    private Map<String, String> nameMap;
    private Map<String, Object> valueMap;


    public DeleteItemSpec() {
        super(new DeleteItemRequest());
    }

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        //Overlay any user provided expected values onto the generated ones
        if(deleteExpression != null && deleteExpression.getExpected() != null){
            expectedValues.putAll(deleteExpression.getExpected());
        }


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

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                    break;
                }
            }
        }


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

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        List<T> allLeases = listLeases();


        LOG.warn("Deleting " + allLeases.size() + " items from table " + table);


        for (T lease : allLeases) {
            DeleteItemRequest deleteRequest = new DeleteItemRequest();
            deleteRequest.setTableName(table);
            deleteRequest.setKey(serializer.getDynamoHashKey(lease));


            dynamoDBClient.deleteItem(deleteRequest);
        }
    }

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        if (LOG.isDebugEnabled()) {
            LOG.debug(String.format("Deleting lease with shardId %s", lease.getLeaseKey()));
        }


        DeleteItemRequest deleteRequest = new DeleteItemRequest();
        deleteRequest.setTableName(table);
        deleteRequest.setKey(serializer.getDynamoHashKey(lease));


        try {
            dynamoDBClient.deleteItem(deleteRequest);
        } catch (AmazonClientException e) {
            throw convertAndRethrowExceptions("delete", lease.getLeaseKey(), e);

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    private DeleteItemOutcome doDeleteItem(DeleteItemSpec spec) {
        // set the table name
        final String tableName = getTable().getTableName();
        // set up the keys
        DeleteItemRequest req = spec.getRequest().withTableName(tableName)
            .withKey(InternalUtils.toAttributeValueMap(spec.getKeyComponents()));
        // set up the expected attribute map, if any
        final Collection<Expected> expected = spec.getExpected();
        final Map<String, ExpectedAttributeValue> expectedMap =
            InternalUtils.toExpectedAttributeValueMap(expected);
        // set up the value map, if any (when expression API is used)
        final Map<String,AttributeValue> attrValMap =
            InternalUtils.fromSimpleMap(spec.getValueMap());
        // set up the request
        req.withConditionalOperator(spec.getConditionalOperator())
            .withConditionExpression(spec.getConditionExpression())
            .withExpected(expectedMap)
            .withExpressionAttributeNames(spec.getNameMap())
            .withExpressionAttributeValues(attrValMap)
            ;

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  private void deleteRow(String key, String appid) {
    if (StringUtils.isBlank(key) || StringUtils.isBlank(appid)) {
      return;
    }
    try {
      DeleteItemRequest delItemRequest = new DeleteItemRequest(appid,
          Collections.singletonMap(Config._KEY, new AttributeValue(key)));
      client().deleteItem(delItemRequest);
    } catch (Exception e) {
      logger.error(null, e);
    }

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                    internalAssertions, deleteExpression.getExpected(),
                    deleteExpression.getConditionalOperator());
            conditionOperator = deleteExpression.getConditionalOperator();
        }


        DeleteItemRequest req = applyUserAgent(new DeleteItemRequest()
            .withKey(key).withTableName(tableName)
            .withExpected(expectedValues))
            .withConditionalOperator(conditionOperator)
            .withRequestMetricCollector(config.getRequestMetricCollector())
            ;

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  public DeletePointResult deletePoint(DeletePointRequest deletePointRequest) {
    long geohash = S2Manager.generateGeohash(deletePointRequest.getGeoPoint());
    long hashKey = S2Manager.generateHashKey(geohash, config.getHashKeyLength());


    DeleteItemRequest deleteItemRequest = deletePointRequest.getDeleteItemRequest();


    deleteItemRequest.setTableName(config.getTableName());


    AttributeValue hashKeyValue = new AttributeValue().withN(String.valueOf(hashKey));
    deleteItemRequest.getKey().put(config.getHashKeyAttributeName(), hashKeyValue);
    deleteItemRequest.getKey().put(config.getRangeKeyAttributeName(), deletePointRequest.getRangeKeyValue());


    DeleteItemResult deleteItemResult = config.getDynamoDBClient().deleteItem(deleteItemRequest);
    DeletePointResult deletePointResult = new DeletePointResult(deleteItemResult);


    return deletePointResult;

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  private void deleteRow(String key, String appid) {
    if (StringUtils.isBlank(key) || StringUtils.isBlank(appid)) {
      return;
    }
    try {
      DeleteItemRequest delItemRequest = new DeleteItemRequest(appid,
          Collections.singletonMap(Config._KEY, new AttributeValue(key)));
      client().deleteItem(delItemRequest);
    } catch (Exception e) {
      logger.error(null, e);
    }

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