PHP DynamoDbClient::scan方法代码示例

    /**
     * Scans table for specific items we want to update
     * @return array
     */
    private function getJobsToFetchStatsFor()
    {
        $params = ['TableName' => $this->tableName, 'FilterExpression' => <<<EXPR
attribute_exists(sapiProjectId)
and attribute_not_exists(componentName)
and not begins_with(runId, :notBeginsWith)
and (
  attribute_not_exists(syrupJobId)
  or
  (attribute_exists(syrupJobId) and syrupJobId <> :syrupJobIdSyncAction)
)
and attribute_not_exists(hasSyrupJob)
EXPR
, 'Limit' => self::MAX_DOCUMENTS_TO_PROCESS, 'ExpressionAttributeValues' => [':notBeginsWith' => ['S' => 'p'], ':syrupJobIdSyncAction' => ['S' => '0']]];
        $ids = [];
        $marshaler = new Marshaler();
        do {
            if (isset($response) && isset($response['LastEvaluatedKey'])) {
                $params['ExclusiveStartKey'] = $response['LastEvaluatedKey'];
            }
            $response = $this->dynamoDbClient->scan($params);
            foreach ($response['Items'] as $item) {
                $ids[] = $marshaler->unmarshalValue($item['runId']);
            }
        } while (isset($response['LastEvaluatedKey']) && count($ids) <= 5000);
        return $ids;
    }

 /**
  * Get items via the scan call
  * @param string $table The item table
  * @param Context\Scan|null $context The call context
  * @return Collection
  */
 public function scan($table, Context\Scan $context = null)
 {
     if (null !== $this->logger) {
         $this->log('Scan on table ' . $table);
     }
     $parameters = array('TableName' => $table);
     if (null !== $context) {
         $parameters += $context->getForDynamoDB();
     }
     if (null !== $this->logger) {
         $this->log('Scan request paramaters : ' . print_r($parameters, true), Logger::DEBUG);
     }
     $response = $this->connector->scan($parameters);
     if (null !== $this->logger) {
         $this->log('Scan request response : ' . print_r($response, true), Logger::DEBUG);
         $this->log($response['ScannedCount'] . ' scanned items');
     }
     $this->addConsumedReadUnits($table, floatval($response['ConsumedCapacityUnits']));
     if (isset($response['LastEvaluatedKey'])) {
         if (null === $context) {
             $nextContext = new Context\Scan();
         } else {
             $nextContext = clone $context;
         }
         $nextContext->setExclusiveStartKey($response['LastEvaluatedKey']);
         if (null !== $this->logger) {
             $this->log('More Items to retrieve');
         }
     } else {
         $nextContext = null;
     }
     $items = new Collection($nextContext, $response['Count']);
     if (!empty($response['Items'])) {
         foreach ($response['Items'] as $responseItem) {
             $item = new Item($table);
             $item->populateFromDynamoDB($responseItem);
             $items->add($item);
         }
     }
     if (null !== $this->logger) {
         $this->log('Find ' . count($items) . ' Items');
     }
     return $items;
 }

 /**
  * Executes the Scan operation.
  *
  * @param string $tableName The name of the table containing the requested items.
  * @param array  $args      Arguments of the query
  *
  * @return  Guzzle\Service\Resource\Model
  *
  * @see http://docs.aws.amazon.com/aws-sdk-php/latest/class-Aws.DynamoDb.DynamoDbClient.html#_scan
  */
 public function scan($tableName, array $args)
 {
     $args['TableName'] = $tableName;
     return $this->client->scan($args);
 }