Java 2.x 用 SDK を使用した DynamoDB の例 - AWSSDK コードサンプル

AWSDocAWS SDKGitHub サンプルリポジトリには、さらに多くの SDK サンプルがあります

翻訳は機械翻訳により提供されています。提供された翻訳内容と英語版の間で齟齬、不一致または矛盾がある場合、英語版が優先します。

Java 2.x 用 SDK を使用した DynamoDB の例

次のコード例は、AWS SDK for Java 2.x with DynamoDB を使用して 1 つのアクションを実行する方法を示しています。

アクション」は、個々のサービス関数の呼び出し方法を示すコードの抜粋です。

シナリオ」は、同じサービス内で複数の関数を呼び出して、特定のタスクを実行する方法を示すコード例です。

それぞれの例にはGitHub、へのリンクがあり、コンテキストでコードを設定および実行する方法についての説明が記載されています。

アクション

次のコード例は、DynamoDB テーブルを作成する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

public static String createTable(DynamoDbClient ddb, String tableName, String key) { DynamoDbWaiter dbWaiter = ddb.waiter(); CreateTableRequest request = CreateTableRequest.builder() .attributeDefinitions(AttributeDefinition.builder() .attributeName(key) .attributeType(ScalarAttributeType.S) .build()) .keySchema(KeySchemaElement.builder() .attributeName(key) .keyType(KeyType.HASH) .build()) .provisionedThroughput(ProvisionedThroughput.builder() .readCapacityUnits(new Long(10)) .writeCapacityUnits(new Long(10)) .build()) .tableName(tableName) .build(); String newTable =""; try { CreateTableResponse response = ddb.createTable(request); DescribeTableRequest tableRequest = DescribeTableRequest.builder() .tableName(tableName) .build(); // Wait until the Amazon DynamoDB table is created. WaiterResponse<DescribeTableResponse> waiterResponse = dbWaiter.waitUntilTableExists(tableRequest); waiterResponse.matched().response().ifPresent(System.out::println); newTable = response.tableDescription().tableName(); return newTable; } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } return ""; }
  • API の詳細については、AWS SDK for Java 2.xAPI CreateTableリファレンスのを参照してください

次のコード例は、DynamoDB テーブルを削除する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

public static void deleteDynamoDBTable(DynamoDbClient ddb, String tableName) { DeleteTableRequest request = DeleteTableRequest.builder() .tableName(tableName) .build(); try { ddb.deleteTable(request); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println(tableName +" was successfully deleted!"); }
  • API の詳細については、AWS SDK for Java 2.xAPI DeleteTableリファレンスのを参照してください

次のコード例は、DynamoDB テーブルから項目を削除する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

public static void deleteDynamoDBItem(DynamoDbClient ddb, String tableName, String key, String keyVal) { HashMap<String,AttributeValue> keyToGet = new HashMap<>(); keyToGet.put(key, AttributeValue.builder() .s(keyVal) .build()); DeleteItemRequest deleteReq = DeleteItemRequest.builder() .tableName(tableName) .key(keyToGet) .build(); try { ddb.deleteItem(deleteReq); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } }
  • API の詳細については、AWS SDK for Java 2.xAPI DeleteItemリファレンスのを参照してください

次のコード例は、DynamoDB テーブルから項目を取得する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

を使用してテーブルから項目を取得しますDynamoDbClient。

public static void getDynamoDBItem(DynamoDbClient ddb,String tableName,String key,String keyVal ) { HashMap<String,AttributeValue> keyToGet = new HashMap<>(); keyToGet.put(key, AttributeValue.builder() .s(keyVal) .build()); GetItemRequest request = GetItemRequest.builder() .key(keyToGet) .tableName(tableName) .build(); try { Map<String,AttributeValue> returnedItem = ddb.getItem(request).item(); if (returnedItem != null) { Set<String> keys = returnedItem.keySet(); System.out.println("Amazon DynamoDB table attributes: \n"); for (String key1 : keys) { System.out.format("%s: %s\n", key1, returnedItem.get(key1).toString()); } } else { System.out.format("No item found with the key %s!\n", key); } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } }
  • API の詳細については、AWS SDK for Java 2.xAPI GetItemリファレンスのを参照してください

次のコード例は、DynamoDB テーブルに関する情報を取得する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

public static void describeDymamoDBTable(DynamoDbClient ddb,String tableName ) { DescribeTableRequest request = DescribeTableRequest.builder() .tableName(tableName) .build(); try { TableDescription tableInfo = ddb.describeTable(request).table(); if (tableInfo != null) { System.out.format("Table name : %s\n", tableInfo.tableName()); System.out.format("Table ARN : %s\n", tableInfo.tableArn()); System.out.format("Status : %s\n", tableInfo.tableStatus()); System.out.format("Item count : %d\n", tableInfo.itemCount().longValue()); System.out.format("Size (bytes): %d\n", tableInfo.tableSizeBytes().longValue()); ProvisionedThroughputDescription throughputInfo = tableInfo.provisionedThroughput(); System.out.println("Throughput"); System.out.format(" Read Capacity : %d\n", throughputInfo.readCapacityUnits().longValue()); System.out.format(" Write Capacity: %d\n", throughputInfo.writeCapacityUnits().longValue()); List<AttributeDefinition> attributes = tableInfo.attributeDefinitions(); System.out.println("Attributes"); for (AttributeDefinition a : attributes) { System.out.format(" %s (%s)\n", a.attributeName(), a.attributeType()); } } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("\nDone!"); }
  • API の詳細については、AWS SDK for Java 2.xAPI DescribeTableリファレンスのを参照してください

次のコード例は、DynamoDB テーブルを一覧表示する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

public static void listAllTables(DynamoDbClient ddb){ boolean moreTables = true; String lastName = null; while(moreTables) { try { ListTablesResponse response = null; if (lastName == null) { ListTablesRequest request = ListTablesRequest.builder().build(); response = ddb.listTables(request); } else { ListTablesRequest request = ListTablesRequest.builder() .exclusiveStartTableName(lastName).build(); response = ddb.listTables(request); } List<String> tableNames = response.tableNames(); if (tableNames.size() > 0) { for (String curName : tableNames) { System.out.format("* %s\n", curName); } } else { System.out.println("No tables found!"); System.exit(0); } lastName = response.lastEvaluatedTableName(); if (lastName == null) { moreTables = false; } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } System.out.println("\nDone!"); }
  • API の詳細については、AWS SDK for Java 2.xAPI ListTablesリファレンスのを参照してください

次のコード例は、DynamoDB テーブルで項目を配置する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

を使用して、DynamoDbClient項目をテーブルに配置します。

public static void putItemInTable(DynamoDbClient ddb, String tableName, String key, String keyVal, String albumTitle, String albumTitleValue, String awards, String awardVal, String songTitle, String songTitleVal){ HashMap<String,AttributeValue> itemValues = new HashMap<>(); itemValues.put(key, AttributeValue.builder().s(keyVal).build()); itemValues.put(songTitle, AttributeValue.builder().s(songTitleVal).build()); itemValues.put(albumTitle, AttributeValue.builder().s(albumTitleValue).build()); itemValues.put(awards, AttributeValue.builder().s(awardVal).build()); PutItemRequest request = PutItemRequest.builder() .tableName(tableName) .item(itemValues) .build(); try { PutItemResponse response = ddb.putItem(request); System.out.println(tableName +" was successfully updated. The request id is "+response.responseMetadata().requestId()); } catch (ResourceNotFoundException e) { System.err.format("Error: The Amazon DynamoDB table \"%s\" can't be found.\n", tableName); System.err.println("Be sure that it exists and that you've typed its name correctly!"); System.exit(1); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } }
  • API の詳細については、AWS SDK for Java 2.xAPI PutItemリファレンスのを参照してください

次のコード例は、DynamoDB テーブルに対してバッチでクエリを実行する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

DynamoDbClientを使用してテーブルをクエリします。

public static int queryTable(DynamoDbClient ddb, String tableName, String partitionKeyName, String partitionKeyVal, String partitionAlias) { // Set up an alias for the partition key name in case it's a reserved word. HashMap<String,String> attrNameAlias = new HashMap<String,String>(); attrNameAlias.put(partitionAlias, partitionKeyName); // Set up mapping of the partition name with the value. HashMap<String, AttributeValue> attrValues = new HashMap<>(); attrValues.put(":"+partitionKeyName, AttributeValue.builder() .s(partitionKeyVal) .build()); QueryRequest queryReq = QueryRequest.builder() .tableName(tableName) .keyConditionExpression(partitionAlias + " = :" + partitionKeyName) .expressionAttributeNames(attrNameAlias) .expressionAttributeValues(attrValues) .build(); try { QueryResponse response = ddb.query(queryReq); return response.count(); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } return -1; }

DynamoDbClient とセカンダリインデックスを使用してテーブルに対してクエリを実行します。

public static void queryIndex(DynamoDbClient ddb, String tableName) { try { Map<String, String> expressionAttributesNames = new HashMap<>(); expressionAttributesNames.put("#year", "year"); Map<String, AttributeValue> expressionAttributeValues = new HashMap<>(); expressionAttributeValues.put(":yearValue", AttributeValue.builder().n("2013").build()); QueryRequest request = QueryRequest.builder() .tableName(tableName) .indexName("year-index") .keyConditionExpression("#year = :yearValue") .expressionAttributeNames(expressionAttributesNames) .expressionAttributeValues(expressionAttributeValues) .build(); System.out.println("=== Movie Titles ==="); QueryResponse response = ddb.query(request); response.items() .forEach(movie -> System.out.println(movie.get("title").s())); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } }
  • API の詳細については、「AWS SDK for Java 2.x API リファレンス」の「Query」を参照してください。

次のコード例は、DynamoDB テーブルをスキャンする方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

を使用して Amazon DynamoDB DynamoDbClientテーブルをスキャンします。

public static void scanItems( DynamoDbClient ddb,String tableName ) { try { ScanRequest scanRequest = ScanRequest.builder() .tableName(tableName) .build(); ScanResponse response = ddb.scan(scanRequest); for (Map<String, AttributeValue> item : response.items()) { Set<String> keys = item.keySet(); for (String key : keys) { System.out.println ("The key name is "+key +"\n" ); System.out.println("The value is "+item.get(key).s()); } } } catch (DynamoDbException e) { e.printStackTrace(); System.exit(1); } }
  • API の詳細については、「AWS SDK for Java 2.x API リファレンス」の「Scan」を参照してください。

次のコード例は、DynamoDB テーブルで項目を更新する方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

DynamoDbClientを使用してテーブル内の項目を更新します。

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 (ResourceNotFoundException e) { System.err.println(e.getMessage()); System.exit(1); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("The Amazon DynamoDB table was updated!"); }
  • API の詳細については、AWS SDK for Java 2.xAPI UpdateItemリファレンスのを参照してください

次のコード例は、DynamoDB 項目のバッチを書き込む方法を示しています。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

拡張クライアントを使用して、多数の項目をテーブルに挿入します。

public static void putBatchRecords(DynamoDbEnhancedClient enhancedClient) { try { DynamoDbTable<Customer> customerMappedTable = enhancedClient.table("Customer", TableSchema.fromBean(Customer.class)); DynamoDbTable<Music> musicMappedTable = enhancedClient.table("Music", TableSchema.fromBean(Music.class)); LocalDate localDate = LocalDate.parse("2020-04-07"); LocalDateTime localDateTime = localDate.atStartOfDay(); Instant instant = localDateTime.toInstant(ZoneOffset.UTC); Customer record2 = new Customer(); record2.setCustName("Fred Pink"); record2.setId("id110"); record2.setEmail("fredp@noserver.com"); record2.setRegistrationDate(instant) ; Customer record3 = new Customer(); record3.setCustName("Susan Pink"); record3.setId("id120"); record3.setEmail("spink@noserver.com"); record3.setRegistrationDate(instant) ; Customer record4 = new Customer(); record4.setCustName("Jerry orange"); record4.setId("id101"); record4.setEmail("jorange@noserver.com"); record4.setRegistrationDate(instant) ; BatchWriteItemEnhancedRequest batchWriteItemEnhancedRequest = BatchWriteItemEnhancedRequest.builder() .writeBatches( WriteBatch.builder(Customer.class) // add items to the Customer table .mappedTableResource(customerMappedTable) .addPutItem(builder -> builder.item(record2)) .addPutItem(builder -> builder.item(record3)) .addPutItem(builder -> builder.item(record4)) .build(), WriteBatch.builder(Music.class) // delete an item from the Music table .mappedTableResource(musicMappedTable) .addDeleteItem(builder -> builder.key( Key.builder().partitionValue("Famous Band").build())) .build()) .build(); // Add three items to the Customer table and delete one item from the Music table enhancedClient.batchWriteItem(batchWriteItemEnhancedRequest); System.out.println("done"); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } }
  • API の詳細については、AWS SDK for Java 2.xAPI BatchWriteItemリファレンスのを参照してください

シナリオ

次のコード例は、以下の操作方法を示しています。

  • 映画データを保持できるテーブルを作成する。

  • テーブルに 1 つの映画を入れ、取得して更新する。

  • サンプル JSON ファイルから映画データをテーブルに書き込む。

  • 特定の年にリリースされた映画を照会する。

  • 何年もの間にリリースされた映画をスキャンする。

  • テーブルからムービーを削除し、テーブルを削除します。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

DynamoDB テーブルを作成します。

// Create a table with a Sort key. public static void createTable(DynamoDbClient ddb, String tableName) { DynamoDbWaiter dbWaiter = ddb.waiter(); ArrayList<AttributeDefinition> attributeDefinitions = new ArrayList<>(); // Define attributes. attributeDefinitions.add(AttributeDefinition.builder() .attributeName("year") .attributeType("N") .build()); attributeDefinitions.add(AttributeDefinition.builder() .attributeName("title") .attributeType("S") .build()); ArrayList<KeySchemaElement> tableKey = new ArrayList<>(); KeySchemaElement key = KeySchemaElement.builder() .attributeName("year") .keyType(KeyType.HASH) .build(); KeySchemaElement key2 = KeySchemaElement.builder() .attributeName("title") .keyType(KeyType.RANGE) .build(); // Add KeySchemaElement objects to the list. tableKey.add(key); tableKey.add(key2); CreateTableRequest request = CreateTableRequest.builder() .keySchema(tableKey) .provisionedThroughput(ProvisionedThroughput.builder() .readCapacityUnits(new Long(10)) .writeCapacityUnits(new Long(10)) .build()) .attributeDefinitions(attributeDefinitions) .tableName(tableName) .build(); try { CreateTableResponse response = ddb.createTable(request); DescribeTableRequest tableRequest = DescribeTableRequest.builder() .tableName(tableName) .build(); // Wait until the Amazon DynamoDB table is created. WaiterResponse<DescribeTableResponse> waiterResponse = dbWaiter.waitUntilTableExists(tableRequest); waiterResponse.matched().response().ifPresent(System.out::println); String newTable = response.tableDescription().tableName(); System.out.println("The " +newTable + " was successfully created."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } }

サンプルの JSON ファイルをダウンロードして抽出するヘルパー関数を作成します。

// Load data into the table. public static void loadData(DynamoDbClient ddb, String tableName, String fileName) throws IOException { DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder() .dynamoDbClient(ddb) .build(); DynamoDbTable<Movies> mappedTable = enhancedClient.table("Movies", TableSchema.fromBean(Movies.class)); JsonParser parser = new JsonFactory().createParser(new File(fileName)); com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser); Iterator<JsonNode> iter = rootNode.iterator(); ObjectNode currentNode; int t = 0 ; while (iter.hasNext()) { // Only add 200 Movies to the table. if (t == 200) break ; currentNode = (ObjectNode) iter.next(); int year = currentNode.path("year").asInt(); String title = currentNode.path("title").asText(); String info = currentNode.path("info").toString(); Movies movies = new Movies(); movies.setYear(year); movies.setTitle(title); movies.setInfo(info); // Put the data into the Amazon DynamoDB Movie table. mappedTable.putItem(movies); t++; } }

テーブルから項目を取得します。

public static void getItem(DynamoDbClient ddb) { HashMap<String,AttributeValue> keyToGet = new HashMap<>(); keyToGet.put("year", AttributeValue.builder() .n("1933") .build()); keyToGet.put("title", AttributeValue.builder() .s("King Kong") .build()); GetItemRequest request = GetItemRequest.builder() .key(keyToGet) .tableName("Movies") .build(); try { Map<String,AttributeValue> returnedItem = ddb.getItem(request).item(); if (returnedItem != null) { Set<String> keys = returnedItem.keySet(); System.out.println("Amazon DynamoDB table attributes: \n"); for (String key1 : keys) { System.out.format("%s: %s\n", key1, returnedItem.get(key1).toString()); } } else { System.out.format("No item found with the key %s!\n", "year"); } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } }

完全な例です。

/** * 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 * * This Java example performs these tasks: * * 1. Creates the Amazon DynamoDB Movie table with partition and sort key. * 2. Puts data into the Amazon DynamoDB table from a JSON document using the Enhanced client. * 3. Gets data from the Movie table. * 4. Adds a new item. * 5. Updates an item. * 6. Uses a Scan to query items using the Enhanced client. * 7. Queries all items where the year is 2013 using the Enhanced Client. * 8. Deletes the table. */ public class Scenario { public static final String DASHES = new String(new char[80]).replace("\0", "-"); public static void main(String[] args) throws IOException { final String usage = "\n" + "Usage:\n" + " <fileName>\n\n" + "Where:\n" + " fileName - The path to the moviedata.json file that you can download from the Amazon DynamoDB Developer Guide.\n" ; if (args.length != 1) { System.out.println(usage); System.exit(1); } String tableName = "Movies"; String fileName = args[0]; ProfileCredentialsProvider credentialsProvider = ProfileCredentialsProvider.create(); Region region = Region.US_EAST_1; DynamoDbClient ddb = DynamoDbClient.builder() .region(region) .credentialsProvider(credentialsProvider) .build(); System.out.println(DASHES); System.out.println("Welcome to the Amazon DynamoDB example scenario."); System.out.println(DASHES); System.out.println(DASHES); System.out.println("1. Creating an Amazon DynamoDB table named Movies with a key named year and a sort key named title."); createTable(ddb, tableName); System.out.println(DASHES); System.out.println(DASHES); System.out.println("2. Loading data into the Amazon DynamoDB table."); loadData(ddb, tableName, fileName); System.out.println(DASHES); System.out.println(DASHES); System.out.println("3. Getting data from the Movie table."); getItem(ddb) ; System.out.println(DASHES); System.out.println(DASHES); System.out.println("4. Putting a record into the Amazon DynamoDB table."); putRecord(ddb); System.out.println(DASHES); System.out.println(DASHES); System.out.println("5. Updating a record."); updateTableItem(ddb, tableName); System.out.println(DASHES); System.out.println(DASHES); System.out.println("6. Scanning the Amazon DynamoDB table."); scanMovies(ddb, tableName); System.out.println(DASHES); System.out.println(DASHES); System.out.println("7. Querying the Movies released in 2013."); queryTable(ddb); System.out.println(DASHES); System.out.println(DASHES); System.out.println("8. Deleting the Amazon DynamoDB table."); deleteDynamoDBTable(ddb, tableName); System.out.println(DASHES); ddb.close(); } // Create a table with a Sort key. public static void createTable(DynamoDbClient ddb, String tableName) { DynamoDbWaiter dbWaiter = ddb.waiter(); ArrayList<AttributeDefinition> attributeDefinitions = new ArrayList<>(); // Define attributes. attributeDefinitions.add(AttributeDefinition.builder() .attributeName("year") .attributeType("N") .build()); attributeDefinitions.add(AttributeDefinition.builder() .attributeName("title") .attributeType("S") .build()); ArrayList<KeySchemaElement> tableKey = new ArrayList<>(); KeySchemaElement key = KeySchemaElement.builder() .attributeName("year") .keyType(KeyType.HASH) .build(); KeySchemaElement key2 = KeySchemaElement.builder() .attributeName("title") .keyType(KeyType.RANGE) .build(); // Add KeySchemaElement objects to the list. tableKey.add(key); tableKey.add(key2); CreateTableRequest request = CreateTableRequest.builder() .keySchema(tableKey) .provisionedThroughput(ProvisionedThroughput.builder() .readCapacityUnits(new Long(10)) .writeCapacityUnits(new Long(10)) .build()) .attributeDefinitions(attributeDefinitions) .tableName(tableName) .build(); try { CreateTableResponse response = ddb.createTable(request); DescribeTableRequest tableRequest = DescribeTableRequest.builder() .tableName(tableName) .build(); // Wait until the Amazon DynamoDB table is created. WaiterResponse<DescribeTableResponse> waiterResponse = dbWaiter.waitUntilTableExists(tableRequest); waiterResponse.matched().response().ifPresent(System.out::println); String newTable = response.tableDescription().tableName(); System.out.println("The " +newTable + " was successfully created."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } // Query the table. public static void queryTable(DynamoDbClient ddb) { try { DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder() .dynamoDbClient(ddb) .build(); DynamoDbTable<Movies> custTable = enhancedClient.table("Movies", TableSchema.fromBean(Movies.class)); QueryConditional queryConditional = QueryConditional .keyEqualTo(Key.builder() .partitionValue(2013) .build()); // Get items in the table and write out the ID value. Iterator<Movies> results = custTable.query(queryConditional).items().iterator(); String result=""; while (results.hasNext()) { Movies rec = results.next(); System.out.println("The title of the movie is "+rec.getTitle()); System.out.println("The movie information is "+rec.getInfo()); } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } // Scan the table. public static void scanMovies(DynamoDbClient ddb, String tableName) { System.out.println("******* Scanning all movies.\n"); try{ DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder() .dynamoDbClient(ddb) .build(); DynamoDbTable<Movies> custTable = enhancedClient.table("Movies", TableSchema.fromBean(Movies.class)); Iterator<Movies> results = custTable.scan().items().iterator(); while (results.hasNext()) { Movies rec = results.next(); System.out.println("The movie title is "+rec.getTitle()); System.out.println("The movie year is " +rec.getYear()); } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } // Load data into the table. public static void loadData(DynamoDbClient ddb, String tableName, String fileName) throws IOException { DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder() .dynamoDbClient(ddb) .build(); DynamoDbTable<Movies> mappedTable = enhancedClient.table("Movies", TableSchema.fromBean(Movies.class)); JsonParser parser = new JsonFactory().createParser(new File(fileName)); com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser); Iterator<JsonNode> iter = rootNode.iterator(); ObjectNode currentNode; int t = 0 ; while (iter.hasNext()) { // Only add 200 Movies to the table. if (t == 200) break ; currentNode = (ObjectNode) iter.next(); int year = currentNode.path("year").asInt(); String title = currentNode.path("title").asText(); String info = currentNode.path("info").toString(); Movies movies = new Movies(); movies.setYear(year); movies.setTitle(title); movies.setInfo(info); // Put the data into the Amazon DynamoDB Movie table. mappedTable.putItem(movies); t++; } } // Update the record to include show only directors. public static void updateTableItem(DynamoDbClient ddb, String tableName){ HashMap<String,AttributeValue> itemKey = new HashMap<>(); itemKey.put("year", AttributeValue.builder().n("1933").build()); itemKey.put("title", AttributeValue.builder().s("King Kong").build()); HashMap<String,AttributeValueUpdate> updatedValues = new HashMap<>(); updatedValues.put("info", AttributeValueUpdate.builder() .value(AttributeValue.builder().s("{\"directors\":[\"Merian C. Cooper\",\"Ernest B. Schoedsack\"]").build()) .action(AttributeAction.PUT) .build()); UpdateItemRequest request = UpdateItemRequest.builder() .tableName(tableName) .key(itemKey) .attributeUpdates(updatedValues) .build(); try { ddb.updateItem(request); } catch (ResourceNotFoundException e) { System.err.println(e.getMessage()); System.exit(1); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("Item was updated!"); } public static void deleteDynamoDBTable(DynamoDbClient ddb, String tableName) { DeleteTableRequest request = DeleteTableRequest.builder() .tableName(tableName) .build(); try { ddb.deleteTable(request); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println(tableName +" was successfully deleted!"); } public static void putRecord(DynamoDbClient ddb) { try { DynamoDbEnhancedClient enhancedClient = DynamoDbEnhancedClient.builder() .dynamoDbClient(ddb) .build(); DynamoDbTable<Movies> table = enhancedClient.table("Movies", TableSchema.fromBean(Movies.class)); // Populate the Table. Movies record = new Movies(); record.setYear(2020); record.setTitle("My Movie2"); record.setInfo("no info"); table.putItem(record); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("Added a new movie to the table."); } public static void getItem(DynamoDbClient ddb) { HashMap<String,AttributeValue> keyToGet = new HashMap<>(); keyToGet.put("year", AttributeValue.builder() .n("1933") .build()); keyToGet.put("title", AttributeValue.builder() .s("King Kong") .build()); GetItemRequest request = GetItemRequest.builder() .key(keyToGet) .tableName("Movies") .build(); try { Map<String,AttributeValue> returnedItem = ddb.getItem(request).item(); if (returnedItem != null) { Set<String> keys = returnedItem.keySet(); System.out.println("Amazon DynamoDB table attributes: \n"); for (String key1 : keys) { System.out.format("%s: %s\n", key1, returnedItem.get(key1).toString()); } } else { System.out.format("No item found with the key %s!\n", "year"); } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } }

次のコード例は、以下の操作方法を示しています。

  • 複数の SELECT ステートメントを実行して、項目のバッチを取得する。

  • 複数の INSERT ステートメントを実行して、項目のバッチを追加する。

  • 複数の UPDATE ステートメントを実行して、項目のバッチを更新する。

  • 複数の DELETE ステートメントを実行して、項目のバッチを削除する。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

public class ScenarioPartiQLBatch { public static void main(String [] args) throws IOException { String tableName = "MoviesPartiQBatch"; ProfileCredentialsProvider credentialsProvider = ProfileCredentialsProvider.create(); Region region = Region.US_EAST_1; DynamoDbClient ddb = DynamoDbClient.builder() .credentialsProvider(credentialsProvider) .region(region) .build(); System.out.println("******* Creating an Amazon DynamoDB table named "+tableName +" with a key named year and a sort key named title."); createTable(ddb, tableName); System.out.println("******* Adding multiple records into the "+ tableName +" table using a batch command."); putRecordBatch(ddb); System.out.println("******* Updating multiple records using a batch command."); updateTableItemBatch(ddb); System.out.println("******* Deleting multiple records using a batch command."); deleteItemBatch(ddb); System.out.println("******* Deleting the Amazon DynamoDB table."); deleteDynamoDBTable(ddb, tableName); ddb.close(); } public static void createTable(DynamoDbClient ddb, String tableName) { DynamoDbWaiter dbWaiter = ddb.waiter(); ArrayList<AttributeDefinition> attributeDefinitions = new ArrayList<>(); // Define attributes. attributeDefinitions.add(AttributeDefinition.builder() .attributeName("year") .attributeType("N") .build()); attributeDefinitions.add(AttributeDefinition.builder() .attributeName("title") .attributeType("S") .build()); ArrayList<KeySchemaElement> tableKey = new ArrayList<>(); KeySchemaElement key = KeySchemaElement.builder() .attributeName("year") .keyType(KeyType.HASH) .build(); KeySchemaElement key2 = KeySchemaElement.builder() .attributeName("title") .keyType(KeyType.RANGE) // Sort .build(); // Add KeySchemaElement objects to the list. tableKey.add(key); tableKey.add(key2); CreateTableRequest request = CreateTableRequest.builder() .keySchema(tableKey) .provisionedThroughput(ProvisionedThroughput.builder() .readCapacityUnits(new Long(10)) .writeCapacityUnits(new Long(10)) .build()) .attributeDefinitions(attributeDefinitions) .tableName(tableName) .build(); try { CreateTableResponse response = ddb.createTable(request); DescribeTableRequest tableRequest = DescribeTableRequest.builder() .tableName(tableName) .build(); // Wait until the Amazon DynamoDB table is created. WaiterResponse<DescribeTableResponse> waiterResponse = dbWaiter.waitUntilTableExists(tableRequest); waiterResponse.matched().response().ifPresent(System.out::println); String newTable = response.tableDescription().tableName(); System.out.println("The " +newTable + " was successfully created."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } public static void putRecordBatch(DynamoDbClient ddb) { String sqlStatement = "INSERT INTO MoviesPartiQBatch VALUE {'year':?, 'title' : ?, 'info' : ?}"; try { // Create three movies to add to the Amazon DynamoDB table. // Set data for Movie 1. List<AttributeValue> parameters = new ArrayList<>(); AttributeValue att1 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue att2 = AttributeValue.builder() .s("My Movie 1") .build(); AttributeValue att3 = AttributeValue.builder() .s("No Information") .build(); parameters.add(att1); parameters.add(att2); parameters.add(att3); BatchStatementRequest statementRequestMovie1 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parameters) .build(); // Set data for Movie 2. List<AttributeValue> parametersMovie2 = new ArrayList<>(); AttributeValue attMovie2 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue attMovie2A = AttributeValue.builder() .s("My Movie 2") .build(); AttributeValue attMovie2B = AttributeValue.builder() .s("No Information") .build(); parametersMovie2.add(attMovie2); parametersMovie2.add(attMovie2A); parametersMovie2.add(attMovie2B); BatchStatementRequest statementRequestMovie2 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersMovie2) .build(); // Set data for Movie 3. List<AttributeValue> parametersMovie3 = new ArrayList<>(); AttributeValue attMovie3 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue attMovie3A = AttributeValue.builder() .s("My Movie 3") .build(); AttributeValue attMovie3B = AttributeValue.builder() .s("No Information") .build(); parametersMovie3.add(attMovie3); parametersMovie3.add(attMovie3A); parametersMovie3.add(attMovie3B); BatchStatementRequest statementRequestMovie3 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersMovie3) .build(); // Add all three movies to the list. List<BatchStatementRequest> myBatchStatementList = new ArrayList<>(); myBatchStatementList.add(statementRequestMovie1); myBatchStatementList.add(statementRequestMovie2); myBatchStatementList.add(statementRequestMovie3); BatchExecuteStatementRequest batchRequest = BatchExecuteStatementRequest.builder() .statements(myBatchStatementList) .build(); BatchExecuteStatementResponse response = ddb.batchExecuteStatement(batchRequest); System.out.println("ExecuteStatement successful: "+ response.toString()); System.out.println("Added new movies using a batch command."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } public static void updateTableItemBatch(DynamoDbClient ddb){ String sqlStatement = "UPDATE MoviesPartiQBatch SET info = 'directors\":[\"Merian C. Cooper\",\"Ernest B. Schoedsack' where year=? and title=?"; List<AttributeValue> parametersRec1 = new ArrayList<>(); // Update three records. AttributeValue att1 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue att2 = AttributeValue.builder() .s("My Movie 1") .build(); parametersRec1.add(att1); parametersRec1.add(att2); BatchStatementRequest statementRequestRec1 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersRec1) .build(); // Update record 2. List<AttributeValue> parametersRec2 = new ArrayList<>(); AttributeValue attRec2 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue attRec2a = AttributeValue.builder() .s("My Movie 2") .build(); parametersRec2.add(attRec2); parametersRec2.add(attRec2a); BatchStatementRequest statementRequestRec2 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersRec2) .build(); // Update record 3. List<AttributeValue> parametersRec3 = new ArrayList<>(); AttributeValue attRec3 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue attRec3a = AttributeValue.builder() .s("My Movie 3") .build(); parametersRec3.add(attRec3); parametersRec3.add(attRec3a); BatchStatementRequest statementRequestRec3 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersRec3) .build(); // Add all three movies to the list. List<BatchStatementRequest> myBatchStatementList = new ArrayList<>(); myBatchStatementList.add(statementRequestRec1); myBatchStatementList.add(statementRequestRec2); myBatchStatementList.add(statementRequestRec3); BatchExecuteStatementRequest batchRequest = BatchExecuteStatementRequest.builder() .statements(myBatchStatementList) .build(); try { BatchExecuteStatementResponse response = ddb.batchExecuteStatement(batchRequest); System.out.println("ExecuteStatement successful: "+ response.toString()); System.out.println("Updated three movies using a batch command."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("Item was updated!"); } public static void deleteItemBatch(DynamoDbClient ddb){ String sqlStatement = "DELETE FROM MoviesPartiQBatch WHERE year = ? and title=?"; List<AttributeValue> parametersRec1 = new ArrayList<>(); // Specify three records to delete. AttributeValue att1 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue att2 = AttributeValue.builder() .s("My Movie 1") .build(); parametersRec1.add(att1); parametersRec1.add(att2); BatchStatementRequest statementRequestRec1 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersRec1) .build(); // Specify record 2. List<AttributeValue> parametersRec2 = new ArrayList<>(); AttributeValue attRec2 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue attRec2a = AttributeValue.builder() .s("My Movie 2") .build(); parametersRec2.add(attRec2); parametersRec2.add(attRec2a); BatchStatementRequest statementRequestRec2 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersRec2) .build(); // Specify record 3. List<AttributeValue> parametersRec3 = new ArrayList<>(); AttributeValue attRec3 = AttributeValue.builder() .n(String.valueOf("2022")) .build(); AttributeValue attRec3a = AttributeValue.builder() .s("My Movie 3") .build(); parametersRec3.add(attRec3); parametersRec3.add(attRec3a); BatchStatementRequest statementRequestRec3 = BatchStatementRequest.builder() .statement(sqlStatement) .parameters(parametersRec3) .build(); // Add all three movies to the list. List<BatchStatementRequest> myBatchStatementList = new ArrayList<>(); myBatchStatementList.add(statementRequestRec1); myBatchStatementList.add(statementRequestRec2); myBatchStatementList.add(statementRequestRec3); BatchExecuteStatementRequest batchRequest = BatchExecuteStatementRequest.builder() .statements(myBatchStatementList) .build(); try { ddb.batchExecuteStatement(batchRequest); System.out.println("Deleted three movies using a batch command."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } public static void deleteDynamoDBTable(DynamoDbClient ddb, String tableName) { DeleteTableRequest request = DeleteTableRequest.builder() .tableName(tableName) .build(); try { ddb.deleteTable(request); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println(tableName +" was successfully deleted!"); } private static ExecuteStatementResponse executeStatementRequest(DynamoDbClient ddb, String statement, List<AttributeValue> parameters ) { ExecuteStatementRequest request = ExecuteStatementRequest.builder() .statement(statement) .parameters(parameters) .build(); return ddb.executeStatement(request); } }
  • API の詳細については、AWS SDK for Java 2.xAPI BatchExecuteStatementリファレンスのを参照してください

次のコード例は、以下の操作方法を示しています。

  • SELECT ステートメントを実行して項目を取得する。

  • INSERT 文を実行して項目を追加する。

  • UPDATE ステートメントを使用して項目を更新する。

  • DELETE ステートメントを実行して項目を削除する。

SDK for Java 2.x
注記

他にもありますGitHub。用例一覧を検索し、AWS コード例リポジトリでの設定と実行の方法を確認してください。

public class ScenarioPartiQ { public static void main(String [] args) throws IOException { final String usage = "\n" + "Usage:\n" + " <fileName>\n\n" + "Where:\n" + " fileName - The path to the moviedata.json file that you can download from the Amazon DynamoDB Developer Guide.\n" ; if (args.length != 1) { System.out.println(usage); System.exit(1); } String fileName = args[0]; String tableName = "MoviesPartiQ"; ProfileCredentialsProvider credentialsProvider = ProfileCredentialsProvider.create(); Region region = Region.US_EAST_1; DynamoDbClient ddb = DynamoDbClient.builder() .credentialsProvider(credentialsProvider) .region(region) .build(); System.out.println("******* Creating an Amazon DynamoDB table named MoviesPartiQ with a key named year and a sort key named title."); createTable(ddb, tableName); System.out.println("******* Loading data into the MoviesPartiQ table."); loadData(ddb, fileName); System.out.println("******* Getting data from the MoviesPartiQ table."); getItem(ddb); System.out.println("******* Putting a record into the MoviesPartiQ table."); putRecord(ddb); System.out.println("******* Updating a record."); updateTableItem(ddb); System.out.println("******* Querying the movies released in 2013."); queryTable(ddb); System.out.println("******* Deleting the Amazon DynamoDB table."); deleteDynamoDBTable(ddb, tableName); ddb.close(); } public static void createTable(DynamoDbClient ddb, String tableName) { DynamoDbWaiter dbWaiter = ddb.waiter(); ArrayList<AttributeDefinition> attributeDefinitions = new ArrayList<>(); // Define attributes. attributeDefinitions.add(AttributeDefinition.builder() .attributeName("year") .attributeType("N") .build()); attributeDefinitions.add(AttributeDefinition.builder() .attributeName("title") .attributeType("S") .build()); ArrayList<KeySchemaElement> tableKey = new ArrayList<>(); KeySchemaElement key = KeySchemaElement.builder() .attributeName("year") .keyType(KeyType.HASH) .build(); KeySchemaElement key2 = KeySchemaElement.builder() .attributeName("title") .keyType(KeyType.RANGE) // Sort .build(); // Add KeySchemaElement objects to the list. tableKey.add(key); tableKey.add(key2); CreateTableRequest request = CreateTableRequest.builder() .keySchema(tableKey) .provisionedThroughput(ProvisionedThroughput.builder() .readCapacityUnits(new Long(10)) .writeCapacityUnits(new Long(10)) .build()) .attributeDefinitions(attributeDefinitions) .tableName(tableName) .build(); try { CreateTableResponse response = ddb.createTable(request); DescribeTableRequest tableRequest = DescribeTableRequest.builder() .tableName(tableName) .build(); // Wait until the Amazon DynamoDB table is created. WaiterResponse<DescribeTableResponse> waiterResponse = dbWaiter.waitUntilTableExists(tableRequest); waiterResponse.matched().response().ifPresent(System.out::println); String newTable = response.tableDescription().tableName(); System.out.println("The " +newTable + " was successfully created."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } // Load data into the table. public static void loadData(DynamoDbClient ddb, String fileName) throws IOException { String sqlStatement = "INSERT INTO MoviesPartiQ VALUE {'year':?, 'title' : ?, 'info' : ?}"; JsonParser parser = new JsonFactory().createParser(new File(fileName)); com.fasterxml.jackson.databind.JsonNode rootNode = new ObjectMapper().readTree(parser); Iterator<JsonNode> iter = rootNode.iterator(); ObjectNode currentNode; int t = 0 ; List<AttributeValue> parameters = new ArrayList<>(); while (iter.hasNext()) { // Add 200 movies to the table. if (t == 200) break ; currentNode = (ObjectNode) iter.next(); int year = currentNode.path("year").asInt(); String title = currentNode.path("title").asText(); String info = currentNode.path("info").toString(); AttributeValue att1 = AttributeValue.builder() .n(String.valueOf(year)) .build(); AttributeValue att2 = AttributeValue.builder() .s(title) .build(); AttributeValue att3 = AttributeValue.builder() .s(info) .build(); parameters.add(att1); parameters.add(att2); parameters.add(att3); // Insert the movie into the Amazon DynamoDB table. executeStatementRequest(ddb, sqlStatement, parameters); System.out.println("Added Movie " +title); parameters.remove(att1); parameters.remove(att2); parameters.remove(att3); t++; } } public static void getItem(DynamoDbClient ddb) { String sqlStatement = "SELECT * FROM MoviesPartiQ where year=? and title=?"; List<AttributeValue> parameters = new ArrayList<>(); AttributeValue att1 = AttributeValue.builder() .n("2012") .build(); AttributeValue att2 = AttributeValue.builder() .s("The Perks of Being a Wallflower") .build(); parameters.add(att1); parameters.add(att2); try { ExecuteStatementResponse response = executeStatementRequest(ddb, sqlStatement, parameters); System.out.println("ExecuteStatement successful: "+ response.toString()); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } public static void putRecord(DynamoDbClient ddb) { String sqlStatement = "INSERT INTO MoviesPartiQ VALUE {'year':?, 'title' : ?, 'info' : ?}"; try { List<AttributeValue> parameters = new ArrayList<>(); AttributeValue att1 = AttributeValue.builder() .n(String.valueOf("2020")) .build(); AttributeValue att2 = AttributeValue.builder() .s("My Movie") .build(); AttributeValue att3 = AttributeValue.builder() .s("No Information") .build(); parameters.add(att1); parameters.add(att2); parameters.add(att3); executeStatementRequest(ddb, sqlStatement, parameters); System.out.println("Added new movie."); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } public static void updateTableItem(DynamoDbClient ddb){ String sqlStatement = "UPDATE MoviesPartiQ SET info = 'directors\":[\"Merian C. Cooper\",\"Ernest B. Schoedsack' where year=? and title=?"; List<AttributeValue> parameters = new ArrayList<>(); AttributeValue att1 = AttributeValue.builder() .n(String.valueOf("2013")) .build(); AttributeValue att2 = AttributeValue.builder() .s("The East") .build(); parameters.add(att1); parameters.add(att2); try { executeStatementRequest(ddb, sqlStatement, parameters); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println("Item was updated!"); } // Query the table where the year is 2013. public static void queryTable(DynamoDbClient ddb) { String sqlStatement = "SELECT * FROM MoviesPartiQ where year = ? ORDER BY year"; try { List<AttributeValue> parameters = new ArrayList<>(); AttributeValue att1 = AttributeValue.builder() .n(String.valueOf("2013")) .build(); parameters.add(att1); // Get items in the table and write out the ID value. ExecuteStatementResponse response = executeStatementRequest(ddb, sqlStatement, parameters); System.out.println("ExecuteStatement successful: "+ response.toString()); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } public static void deleteDynamoDBTable(DynamoDbClient ddb, String tableName) { DeleteTableRequest request = DeleteTableRequest.builder() .tableName(tableName) .build(); try { ddb.deleteTable(request); } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } System.out.println(tableName +" was successfully deleted!"); } private static ExecuteStatementResponse executeStatementRequest(DynamoDbClient ddb, String statement, List<AttributeValue> parameters ) { ExecuteStatementRequest request = ExecuteStatementRequest.builder() .statement(statement) .parameters(parameters) .build(); return ddb.executeStatement(request); } private static void processResults(ExecuteStatementResponse executeStatementResult) { System.out.println("ExecuteStatement successful: "+ executeStatementResult.toString()); } }
  • API の詳細については、AWS SDK for Java 2.xAPI ExecuteStatementリファレンスのを参照してください