AWS 문서 AWS SDK SDK 예제
기계 번역으로 제공되는 번역입니다. 제공된 번역과 원본 영어의 내용이 상충하는 경우에는 영어 버전이 우선합니다.
UpdateItem
OR와 AWS SDK 함께 사용 CLI
다음 코드 예제는 UpdateItem
의 사용 방법을 보여 줍니다.
작업 예시는 대규모 프로그램에서 발췌한 코드이며 컨텍스트에 맞춰 실행해야 합니다. 다음 코드 예제에서는 컨텍스트 내에서 이 작업을 확인할 수 있습니다.
- .NET
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- AWS SDK for .NET
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참고
더 많은 정보가 있습니다 GitHub. AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. /// <summary> /// Updates an existing item in the movies table. /// </summary> /// <param name="client">An initialized Amazon DynamoDB client object.</param> /// <param name="newMovie">A Movie object containing information for /// the movie to update.</param> /// <param name="newInfo">A MovieInfo object that contains the /// information that will be changed.</param> /// <param name="tableName">The name of the table that contains the movie.</param> /// <returns>A Boolean value that indicates the success of the operation.</returns> public static async Task<bool> UpdateItemAsync( AmazonDynamoDBClient client, Movie newMovie, MovieInfo newInfo, string tableName) { var key = new Dictionary<string, AttributeValue> { ["title"] = new AttributeValue { S = newMovie.Title }, ["year"] = new AttributeValue { N = newMovie.Year.ToString() }, }; var updates = new Dictionary<string, AttributeValueUpdate> { ["info.plot"] = new AttributeValueUpdate { Action = AttributeAction.PUT, Value = new AttributeValue { S = newInfo.Plot }, }, ["info.rating"] = new AttributeValueUpdate { Action = AttributeAction.PUT, Value = new AttributeValue { N = newInfo.Rank.ToString() }, }, }; var request = new UpdateItemRequest { AttributeUpdates = updates, Key = key, TableName = tableName, }; var response = await client.UpdateItemAsync(request); return response.HttpStatusCode == System.Net.HttpStatusCode.OK; }
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자세한 API 내용은 UpdateItem AWS SDK for .NETAPI참조를 참조하십시오.
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- Bash
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- AWS CLI Bash 스크립트 사용
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참고
더 많은 정보가 있습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. ############################################################################## # function dynamodb_update_item # # This function updates an item in a DynamoDB table. # # # Parameters: # -n table_name -- The name of the table. # -k keys -- Path to json file containing the keys that identify the item to update. # -e update expression -- An expression that defines one or more attributes to be updated. # -v values -- Path to json file containing the update values. # # Returns: # 0 - If successful. # 1 - If it fails. ############################################################################# function dynamodb_update_item() { local table_name keys update_expression values response local option OPTARG # Required to use getopts command in a function. ####################################### # Function usage explanation ####################################### function usage() { echo "function dynamodb_update_item" echo "Update an item in a DynamoDB table." echo " -n table_name -- The name of the table." echo " -k keys -- Path to json file containing the keys that identify the item to update." echo " -e update expression -- An expression that defines one or more attributes to be updated." echo " -v values -- Path to json file containing the update values." echo "" } while getopts "n:k:e:v:h" option; do case "${option}" in n) table_name="${OPTARG}" ;; k) keys="${OPTARG}" ;; e) update_expression="${OPTARG}" ;; v) values="${OPTARG}" ;; h) usage return 0 ;; \?) echo "Invalid parameter" usage return 1 ;; esac done export OPTIND=1 if [[ -z "$table_name" ]]; then errecho "ERROR: You must provide a table name with the -n parameter." usage return 1 fi if [[ -z "$keys" ]]; then errecho "ERROR: You must provide a keys json file path the -k parameter." usage return 1 fi if [[ -z "$update_expression" ]]; then errecho "ERROR: You must provide an update expression with the -e parameter." usage return 1 fi if [[ -z "$values" ]]; then errecho "ERROR: You must provide a values json file path the -v parameter." usage return 1 fi iecho "Parameters:\n" iecho " table_name: $table_name" iecho " keys: $keys" iecho " update_expression: $update_expression" iecho " values: $values" response=$(aws dynamodb update-item \ --table-name "$table_name" \ --key file://"$keys" \ --update-expression "$update_expression" \ --expression-attribute-values file://"$values") local error_code=${?} if [[ $error_code -ne 0 ]]; then aws_cli_error_log $error_code errecho "ERROR: AWS reports update-item operation failed.$response" return 1 fi return 0 }
이 예제에 사용된 유틸리티 함수
############################################################################### # function iecho # # This function enables the script to display the specified text only if # the global variable $VERBOSE is set to true. ############################################################################### function iecho() { if [[ $VERBOSE == true ]]; then echo "$@" fi } ############################################################################### # function errecho # # This function outputs everything sent to it to STDERR (standard error output). ############################################################################### function errecho() { printf "%s\n" "$*" 1>&2 } ############################################################################## # function aws_cli_error_log() # # This function is used to log the error messages from the AWS CLI. # # See https://docs.aws.amazon.com/cli/latest/topic/return-codes.html#cli-aws-help-return-codes. # # The function expects the following argument: # $1 - The error code returned by the AWS CLI. # # Returns: # 0: - Success. # ############################################################################## function aws_cli_error_log() { local err_code=$1 errecho "Error code : $err_code" if [ "$err_code" == 1 ]; then errecho " One or more S3 transfers failed." elif [ "$err_code" == 2 ]; then errecho " Command line failed to parse." elif [ "$err_code" == 130 ]; then errecho " Process received SIGINT." elif [ "$err_code" == 252 ]; then errecho " Command syntax invalid." elif [ "$err_code" == 253 ]; then errecho " The system environment or configuration was invalid." elif [ "$err_code" == 254 ]; then errecho " The service returned an error." elif [ "$err_code" == 255 ]; then errecho " 255 is a catch-all error." fi return 0 }
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자세한 API 내용은 AWS CLI 명령 UpdateItem참조를 참조하십시오.
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- C++
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- SDKC++의 경우
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참고
더 많은 정보가 있습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. //! Update an Amazon DynamoDB table item. /*! \sa updateItem() \param tableName: The table name. \param partitionKey: The partition key. \param partitionValue: The value for the partition key. \param attributeKey: The key for the attribute to be updated. \param attributeValue: The value for the attribute to be updated. \param clientConfiguration: AWS client configuration. \return bool: Function succeeded. */ /* * The example code only sets/updates an attribute value. It processes * the attribute value as a string, even if the value could be interpreted * as a number. Also, the example code does not remove an existing attribute * from the key value. */ bool AwsDoc::DynamoDB::updateItem(const Aws::String &tableName, const Aws::String &partitionKey, const Aws::String &partitionValue, const Aws::String &attributeKey, const Aws::String &attributeValue, const Aws::Client::ClientConfiguration &clientConfiguration) { Aws::DynamoDB::DynamoDBClient dynamoClient(clientConfiguration); // *** Define UpdateItem request arguments. // Define TableName argument. Aws::DynamoDB::Model::UpdateItemRequest request; request.SetTableName(tableName); // Define KeyName argument. Aws::DynamoDB::Model::AttributeValue attribValue; attribValue.SetS(partitionValue); request.AddKey(partitionKey, attribValue); // Construct the SET update expression argument. Aws::String update_expression("SET #a = :valueA"); request.SetUpdateExpression(update_expression); // Construct attribute name argument. Aws::Map<Aws::String, Aws::String> expressionAttributeNames; expressionAttributeNames["#a"] = attributeKey; request.SetExpressionAttributeNames(expressionAttributeNames); // Construct attribute value argument. Aws::DynamoDB::Model::AttributeValue attributeUpdatedValue; attributeUpdatedValue.SetS(attributeValue); Aws::Map<Aws::String, Aws::DynamoDB::Model::AttributeValue> expressionAttributeValues; expressionAttributeValues[":valueA"] = attributeUpdatedValue; request.SetExpressionAttributeValues(expressionAttributeValues); // Update the item. const Aws::DynamoDB::Model::UpdateItemOutcome &outcome = dynamoClient.UpdateItem( request); if (outcome.IsSuccess()) { std::cout << "Item was updated" << std::endl; } else { std::cerr << outcome.GetError().GetMessage() << std::endl; } return outcome.IsSuccess(); }
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자세한 API 내용은 UpdateItem AWS SDK for C++API참조를 참조하십시오.
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- CLI
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- AWS CLI
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예 1: 테이블의 항목을 업데이트하는 방법
다음
update-item
예제에서는MusicCollection
테이블의 항목을 업데이트합니다. 새 속성(Year
)을 추가하고AlbumTitle
속성을 수정합니다. 업데이트 후에 표시되는 항목 속성이 모두 응답에 반환됩니다.aws dynamodb update-item \ --table-name
MusicCollection
\ --keyfile://key.json
\ --update-expression"SET #Y = :y, #AT = :t"
\ --expression-attribute-namesfile://expression-attribute-names.json
\ --expression-attribute-valuesfile://expression-attribute-values.json
\ --return-valuesALL_NEW
\ --return-consumed-capacityTOTAL
\ --return-item-collection-metricsSIZE
key.json
의 콘텐츠:{ "Artist": {"S": "Acme Band"}, "SongTitle": {"S": "Happy Day"} }
expression-attribute-names.json
의 콘텐츠:{ "#Y":"Year", "#AT":"AlbumTitle" }
expression-attribute-values.json
의 콘텐츠:{ ":y":{"N": "2015"}, ":t":{"S": "Louder Than Ever"} }
출력:
{ "Attributes": { "AlbumTitle": { "S": "Louder Than Ever" }, "Awards": { "N": "10" }, "Artist": { "S": "Acme Band" }, "Year": { "N": "2015" }, "SongTitle": { "S": "Happy Day" } }, "ConsumedCapacity": { "TableName": "MusicCollection", "CapacityUnits": 3.0 }, "ItemCollectionMetrics": { "ItemCollectionKey": { "Artist": { "S": "Acme Band" } }, "SizeEstimateRangeGB": [ 0.0, 1.0 ] } }
자세한 내용은 Amazon DynamoDB 개발자 안내서의 항목 쓰기를 참조하세요.
예 2: 항목을 조건부로 업데이트하는 방법
다음 예시에서는 기존 항목에
Year
속성이 없는 경우에만MusicCollection
테이블의 항목을 업데이트합니다.aws dynamodb update-item \ --table-name
MusicCollection
\ --keyfile://key.json
\ --update-expression"SET #Y = :y, #AT = :t"
\ --expression-attribute-namesfile://expression-attribute-names.json
\ --expression-attribute-valuesfile://expression-attribute-values.json
\ --condition-expression"attribute_not_exists(#Y)"
key.json
의 콘텐츠:{ "Artist": {"S": "Acme Band"}, "SongTitle": {"S": "Happy Day"} }
expression-attribute-names.json
의 콘텐츠:{ "#Y":"Year", "#AT":"AlbumTitle" }
expression-attribute-values.json
의 콘텐츠:{ ":y":{"N": "2015"}, ":t":{"S": "Louder Than Ever"} }
항목에 이미
Year
속성이 있는 경우 DynamoDB는 다음 출력을 반환합니다.An error occurred (ConditionalCheckFailedException) when calling the UpdateItem operation: The conditional request failed
자세한 내용은 Amazon DynamoDB 개발자 안내서의 항목 쓰기를 참조하세요.
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자세한 API 내용은 AWS CLI 명령 UpdateItem
참조를 참조하십시오.
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- Go
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- SDKGo V2의 경우
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참고
더 많은 내용이 있습니다 GitHub. AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. // TableBasics encapsulates the Amazon DynamoDB service actions used in the examples. // It contains a DynamoDB service client that is used to act on the specified table. type TableBasics struct { DynamoDbClient *dynamodb.Client TableName string } // UpdateMovie updates the rating and plot of a movie that already exists in the // DynamoDB table. This function uses the `expression` package to build the update // expression. func (basics TableBasics) UpdateMovie(movie Movie) (map[string]map[string]interface{}, error) { var err error var response *dynamodb.UpdateItemOutput var attributeMap map[string]map[string]interface{} update := expression.Set(expression.Name("info.rating"), expression.Value(movie.Info["rating"])) update.Set(expression.Name("info.plot"), expression.Value(movie.Info["plot"])) expr, err := expression.NewBuilder().WithUpdate(update).Build() if err != nil { log.Printf("Couldn't build expression for update. Here's why: %v\n", err) } else { response, err = basics.DynamoDbClient.UpdateItem(context.TODO(), &dynamodb.UpdateItemInput{ TableName: aws.String(basics.TableName), Key: movie.GetKey(), ExpressionAttributeNames: expr.Names(), ExpressionAttributeValues: expr.Values(), UpdateExpression: expr.Update(), ReturnValues: types.ReturnValueUpdatedNew, }) if err != nil { log.Printf("Couldn't update movie %v. Here's why: %v\n", movie.Title, err) } else { err = attributevalue.UnmarshalMap(response.Attributes, &attributeMap) if err != nil { log.Printf("Couldn't unmarshall update response. Here's why: %v\n", err) } } } return attributeMap, err } // Movie encapsulates data about a movie. Title and Year are the composite primary key // of the movie in Amazon DynamoDB. Title is the sort key, Year is the partition key, // and Info is additional data. type Movie struct { Title string `dynamodbav:"title"` Year int `dynamodbav:"year"` Info map[string]interface{} `dynamodbav:"info"` } // GetKey returns the composite primary key of the movie in a format that can be // sent to DynamoDB. func (movie Movie) GetKey() map[string]types.AttributeValue { title, err := attributevalue.Marshal(movie.Title) if err != nil { panic(err) } year, err := attributevalue.Marshal(movie.Year) if err != nil { panic(err) } return map[string]types.AttributeValue{"title": title, "year": year} } // String returns the title, year, rating, and plot of a movie, formatted for the example. func (movie Movie) String() string { return fmt.Sprintf("%v\n\tReleased: %v\n\tRating: %v\n\tPlot: %v\n", movie.Title, movie.Year, movie.Info["rating"], movie.Info["plot"]) }
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자세한 API 내용은 UpdateItem AWS SDK for Go
API참조를 참조하십시오.
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- Java
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- SDK자바 2.x의 경우
-
참고
더 많은 내용이 있습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. 를 사용하여 테이블의 항목을 DynamoDbClient업데이트합니다.
import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.dynamodb.model.DynamoDbException; import software.amazon.awssdk.services.dynamodb.model.AttributeAction; import software.amazon.awssdk.services.dynamodb.model.AttributeValue; import software.amazon.awssdk.services.dynamodb.model.AttributeValueUpdate; import software.amazon.awssdk.services.dynamodb.model.UpdateItemRequest; import software.amazon.awssdk.services.dynamodb.DynamoDbClient; import java.util.HashMap; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html * * To update an Amazon DynamoDB table using the AWS SDK for Java V2, its better * practice to use the * Enhanced Client, See the EnhancedModifyItem example. */ public class UpdateItem { public static void main(String[] args) { final String usage = """ Usage: <tableName> <key> <keyVal> <name> <updateVal> Where: tableName - The Amazon DynamoDB table (for example, Music3). key - The name of the key in the table (for example, Artist). keyVal - The value of the key (for example, Famous Band). name - The name of the column where the value is updated (for example, Awards). updateVal - The value used to update an item (for example, 14). Example: UpdateItem Music3 Artist Famous Band Awards 14 """; if (args.length != 5) { System.out.println(usage); System.exit(1); } String tableName = args[0]; String key = args[1]; String keyVal = args[2]; String name = args[3]; String updateVal = args[4]; Region region = Region.US_EAST_1; DynamoDbClient ddb = DynamoDbClient.builder() .region(region) .build(); updateTableItem(ddb, tableName, key, keyVal, name, updateVal); ddb.close(); } public static void updateTableItem(DynamoDbClient ddb, String tableName, String key, String keyVal, String name, String updateVal) { HashMap<String, AttributeValue> itemKey = new HashMap<>(); itemKey.put(key, AttributeValue.builder() .s(keyVal) .build()); HashMap<String, AttributeValueUpdate> updatedValues = new HashMap<>(); updatedValues.put(name, AttributeValueUpdate.builder() .value(AttributeValue.builder().s(updateVal).build()) .action(AttributeAction.PUT) .build()); UpdateItemRequest request = UpdateItemRequest.builder() .tableName(tableName) .key(itemKey) .attributeUpdates(updatedValues) .build(); try { ddb.updateItem(request); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("The Amazon DynamoDB table was updated!"); } }
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자세한 API 내용은 UpdateItem AWS SDK for Java 2.xAPI참조를 참조하십시오.
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- JavaScript
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- SDK JavaScript (v3) 에 대한
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참고
더 많은 정보가 있습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. 이 예제에서는 문서 클라이언트를 사용하여 DynamoDB의 항목 작업을 단순화합니다. 자세한 API 내용은 을 참조하십시오 UpdateCommand.
import { DynamoDBClient } from "@aws-sdk/client-dynamodb"; import { DynamoDBDocumentClient, UpdateCommand } from "@aws-sdk/lib-dynamodb"; const client = new DynamoDBClient({}); const docClient = DynamoDBDocumentClient.from(client); export const main = async () => { const command = new UpdateCommand({ TableName: "Dogs", Key: { Breed: "Labrador", }, UpdateExpression: "set Color = :color", ExpressionAttributeValues: { ":color": "black", }, ReturnValues: "ALL_NEW", }); const response = await docClient.send(command); console.log(response); return response; };
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자세한 API 내용은 UpdateItem AWS SDK for JavaScriptAPI참조를 참조하십시오.
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- Kotlin
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- SDK코틀린의 경우
-
참고
더 많은 정보가 있습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. suspend fun updateTableItem( tableNameVal: String, keyName: String, keyVal: String, name: String, updateVal: String, ) { val itemKey = mutableMapOf<String, AttributeValue>() itemKey[keyName] = AttributeValue.S(keyVal) val updatedValues = mutableMapOf<String, AttributeValueUpdate>() updatedValues[name] = AttributeValueUpdate { value = AttributeValue.S(updateVal) action = AttributeAction.Put } val request = UpdateItemRequest { tableName = tableNameVal key = itemKey attributeUpdates = updatedValues } DynamoDbClient { region = "us-east-1" }.use { ddb -> ddb.updateItem(request) println("Item in $tableNameVal was updated") } }
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자세한 API AWS SDK내용은 Kotlin API 참조를 참조하세요 UpdateItem
.
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- PHP
-
- PHP용 SDK
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참고
자세한 내용은 다음과 같습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. echo "What rating would you like to give {$movie['Item']['title']['S']}?\n"; $rating = 0; while (!is_numeric($rating) || intval($rating) != $rating || $rating < 1 || $rating > 10) { $rating = testable_readline("Rating (1-10): "); } $service->updateItemAttributeByKey($tableName, $key, 'rating', 'N', $rating); public function updateItemAttributeByKey( string $tableName, array $key, string $attributeName, string $attributeType, string $newValue ) { $this->dynamoDbClient->updateItem([ 'Key' => $key['Item'], 'TableName' => $tableName, 'UpdateExpression' => "set #NV=:NV", 'ExpressionAttributeNames' => [ '#NV' => $attributeName, ], 'ExpressionAttributeValues' => [ ':NV' => [ $attributeType => $newValue ] ], ]); }
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자세한 API 내용은 UpdateItem AWS SDK for PHPAPI참조를 참조하십시오.
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- PowerShell
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- 에 대한 도구 PowerShell
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예 1: 파티션 SongTitle 키와 정렬 키 아티스트를 사용하여 DynamoDB 항목의 장르 속성을 'Rap'으로 설정합니다.
$key = @{ SongTitle = 'Somewhere Down The Road' Artist = 'No One You Know' } | ConvertTo-DDBItem $updateDdbItem = @{ TableName = 'Music' Key = $key UpdateExpression = 'set Genre = :val1' ExpressionAttributeValue = (@{ ':val1' = ([Amazon.DynamoDBv2.Model.AttributeValue]'Rap') }) } Update-DDBItem @updateDdbItem
출력:
Name Value ---- ----- Genre Rap
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API자세한 내용은 Cmdlet 참조를 참조하십시오 UpdateItem.AWS Tools for PowerShell
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- Python
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- SDK파이썬용 (보토3)
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참고
더 많은 정보가 있습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. 업데이트 표현식을 사용하여 항목을 업데이트합니다.
class Movies: """Encapsulates an Amazon DynamoDB table of movie data. Example data structure for a movie record in this table: { "year": 1999, "title": "For Love of the Game", "info": { "directors": ["Sam Raimi"], "release_date": "1999-09-15T00:00:00Z", "rating": 6.3, "plot": "A washed up pitcher flashes through his career.", "rank": 4987, "running_time_secs": 8220, "actors": [ "Kevin Costner", "Kelly Preston", "John C. Reilly" ] } } """ def __init__(self, dyn_resource): """ :param dyn_resource: A Boto3 DynamoDB resource. """ self.dyn_resource = dyn_resource # The table variable is set during the scenario in the call to # 'exists' if the table exists. Otherwise, it is set by 'create_table'. self.table = None def update_movie(self, title, year, rating, plot): """ Updates rating and plot data for a movie in the table. :param title: The title of the movie to update. :param year: The release year of the movie to update. :param rating: The updated rating to the give the movie. :param plot: The updated plot summary to give the movie. :return: The fields that were updated, with their new values. """ try: response = self.table.update_item( Key={"year": year, "title": title}, UpdateExpression="set info.rating=:r, info.plot=:p", ExpressionAttributeValues={":r": Decimal(str(rating)), ":p": plot}, ReturnValues="UPDATED_NEW", ) except ClientError as err: logger.error( "Couldn't update movie %s in table %s. Here's why: %s: %s", title, self.table.name, err.response["Error"]["Code"], err.response["Error"]["Message"], ) raise else: return response["Attributes"]
산술 연산을 포함하는 업데이트 표현식을 사용하여 항목을 업데이트합니다.
class UpdateQueryWrapper: def __init__(self, table): self.table = table def update_rating(self, title, year, rating_change): """ Updates the quality rating of a movie in the table by using an arithmetic operation in the update expression. By specifying an arithmetic operation, you can adjust a value in a single request, rather than first getting its value and then setting its new value. :param title: The title of the movie to update. :param year: The release year of the movie to update. :param rating_change: The amount to add to the current rating for the movie. :return: The updated rating. """ try: response = self.table.update_item( Key={"year": year, "title": title}, UpdateExpression="set info.rating = info.rating + :val", ExpressionAttributeValues={":val": Decimal(str(rating_change))}, ReturnValues="UPDATED_NEW", ) except ClientError as err: logger.error( "Couldn't update movie %s in table %s. Here's why: %s: %s", title, self.table.name, err.response["Error"]["Code"], err.response["Error"]["Message"], ) raise else: return response["Attributes"]
특정 조건을 충족하는 경우에만 항목을 업데이트합니다.
class UpdateQueryWrapper: def __init__(self, table): self.table = table def remove_actors(self, title, year, actor_threshold): """ Removes an actor from a movie, but only when the number of actors is greater than a specified threshold. If the movie does not list more than the threshold, no actors are removed. :param title: The title of the movie to update. :param year: The release year of the movie to update. :param actor_threshold: The threshold of actors to check. :return: The movie data after the update. """ try: response = self.table.update_item( Key={"year": year, "title": title}, UpdateExpression="remove info.actors[0]", ConditionExpression="size(info.actors) > :num", ExpressionAttributeValues={":num": actor_threshold}, ReturnValues="ALL_NEW", ) except ClientError as err: if err.response["Error"]["Code"] == "ConditionalCheckFailedException": logger.warning( "Didn't update %s because it has fewer than %s actors.", title, actor_threshold + 1, ) else: logger.error( "Couldn't update movie %s. Here's why: %s: %s", title, err.response["Error"]["Code"], err.response["Error"]["Message"], ) raise else: return response["Attributes"]
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자세한 API AWS SDK내용은 Python (Boto3) API 참조를 참조하십시오 UpdateItem.
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- Ruby
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- SDK루비의 경우
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참고
더 많은 정보가 있습니다. GitHub AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. class DynamoDBBasics attr_reader :dynamo_resource attr_reader :table def initialize(table_name) client = Aws::DynamoDB::Client.new(region: "us-east-1") @dynamo_resource = Aws::DynamoDB::Resource.new(client: client) @table = @dynamo_resource.table(table_name) end # Updates rating and plot data for a movie in the table. # # @param movie [Hash] The title, year, plot, rating of the movie. def update_item(movie) response = @table.update_item( key: {"year" => movie[:year], "title" => movie[:title]}, update_expression: "set info.rating=:r", expression_attribute_values: { ":r" => movie[:rating] }, return_values: "UPDATED_NEW") rescue Aws::DynamoDB::Errors::ServiceError => e puts("Couldn't update movie #{movie[:title]} (#{movie[:year]}) in table #{@table.name}\n") puts("\t#{e.code}: #{e.message}") raise else response.attributes end
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자세한 API 내용은 UpdateItem AWS SDK for RubyAPI참조를 참조하십시오.
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- SAP ABAP
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- SDK에 대한 SAP ABAP
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참고
더 많은 정보가 있습니다 GitHub. AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. TRY. oo_output = lo_dyn->updateitem( iv_tablename = iv_table_name it_key = it_item_key it_attributeupdates = it_attribute_updates ). MESSAGE '1 item updated in DynamoDB Table' && iv_table_name TYPE 'I'. CATCH /aws1/cx_dyncondalcheckfaile00. MESSAGE 'A condition specified in the operation could not be evaluated.' TYPE 'E'. CATCH /aws1/cx_dynresourcenotfoundex. MESSAGE 'The table or index does not exist' TYPE 'E'. CATCH /aws1/cx_dyntransactconflictex. MESSAGE 'Another transaction is using the item' TYPE 'E'. ENDTRY.
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자세한 API AWS SDK내용은 UpdateItem에서 SAP ABAP API 참조를 참조하십시오.
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- Swift
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- SDK스위프트의 경우
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참고
이 문서는 프리뷰 릴리스에 대한 프리릴리즈 SDK 설명서입니다. 내용은 변경될 수 있습니다.
참고
자세한 내용은 GitHub 다음과 같습니다. AWS 코드 예시 리포지토리
에서 전체 예시를 찾고 설정 및 실행하는 방법을 배워보세요. /// Update the specified movie with new `rating` and `plot` information. /// /// - Parameters: /// - title: The title of the movie to update. /// - year: The release year of the movie to update. /// - rating: The new rating for the movie. /// - plot: The new plot summary string for the movie. /// /// - Returns: An array of mappings of attribute names to their new /// listing each item actually changed. Items that didn't need to change /// aren't included in this list. `nil` if no changes were made. /// func update(title: String, year: Int, rating: Double? = nil, plot: String? = nil) async throws -> [Swift.String:DynamoDBClientTypes.AttributeValue]? { guard let client = self.ddbClient else { throw MoviesError.UninitializedClient } // Build the update expression and the list of expression attribute // values. Include only the information that's changed. var expressionParts: [String] = [] var attrValues: [Swift.String:DynamoDBClientTypes.AttributeValue] = [:] if rating != nil { expressionParts.append("info.rating=:r") attrValues[":r"] = .n(String(rating!)) } if plot != nil { expressionParts.append("info.plot=:p") attrValues[":p"] = .s(plot!) } let expression: String = "set \(expressionParts.joined(separator: ", "))" let input = UpdateItemInput( // Create substitution tokens for the attribute values, to ensure // no conflicts in expression syntax. expressionAttributeValues: attrValues, // The key identifying the movie to update consists of the release // year and title. key: [ "year": .n(String(year)), "title": .s(title) ], returnValues: .updatedNew, tableName: self.tableName, updateExpression: expression ) let output = try await client.updateItem(input: input) guard let attributes: [Swift.String:DynamoDBClientTypes.AttributeValue] = output.attributes else { throw MoviesError.InvalidAttributes } return attributes }
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자세한 API 내용은 Swift API 참조를 참조하십시오 UpdateItem
.AWS SDK
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