/**
* Update an item via the update_item call
* @param string $table The item table
* @param mixed $hash The primary hash key
* @param mixed|null $range The primary range key
* @param AttributeUpdate $update
* @param Context\Update|null $context The call context
* @return array|null
* @throws Exception\AttributesException
*/
public function update($table, $hash, $range = null, AttributeUpdate $update, Context\Update $context = null)
{
if (null !== $this->logger) {
$this->log('Update on table' . $table);
}
// Primary key
$hash = new Attribute($hash);
$key = array('HashKeyElement' => $hash->getForDynamoDB());
// Range key
if (null !== $range) {
$range = new Attribute($range);
$key['RangeKeyElement'] = $range->getForDynamoDB();
}
$attributes = array();
foreach ($update as $name => $attribute) {
/** @var $attribute Attribute */
$attributes[$name] = $attribute->getForDynamoDB();
}
$parameters = array('TableName' => $table, 'Key' => $key, 'AttributeUpdates' => $attributes);
if (null !== $context) {
$parameters += $context->getForDynamoDB();
}
if (null !== $this->logger) {
$this->log('Update request paramaters : ' . print_r($parameters, true), Logger::DEBUG);
}
$response = $this->connector->updateItem($parameters);
if (null !== $this->logger) {
$this->log('Update request response : ' . print_r($response, true), Logger::DEBUG);
}
// Update write counter
$this->addConsumedWriteUnits($table, floatval($response['ConsumedCapacityUnits']));
return $this->populateAttributes($response);
}
