AWS 文檔 AWS SDK示例 GitHub 回購中有更多SDK示例
本文為英文版的機器翻譯版本,如內容有任何歧義或不一致之處,概以英文版為準。
搭GetTable
配 AWS SDK或使用 CLI
下列程式碼範例會示範如何使用GetTable
。
動作範例是大型程式的程式碼摘錄,必須在內容中執行。您可以在下列程式碼範例的內容中看到此動作:
- .NET
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- AWS SDK for .NET
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 /// <summary> /// Get information about an Amazon Keyspaces table. /// </summary> /// <param name="keyspaceName">The keyspace containing the table.</param> /// <param name="tableName">The name of the Amazon Keyspaces table.</param> /// <returns>The response containing data about the table.</returns> public async Task<GetTableResponse> GetTable(string keyspaceName, string tableName) { var response = await _amazonKeyspaces.GetTableAsync( new GetTableRequest { KeyspaceName = keyspaceName, TableName = tableName }); return response; }
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如需詳API細資訊,請參閱AWS SDK for .NET API參考GetTable中的。
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- Java
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- SDK對於爪哇 2.x
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 public static void checkTable(KeyspacesClient keyClient, String keyspaceName, String tableName) throws InterruptedException { try { boolean tableStatus = false; String status; GetTableResponse response = null; GetTableRequest tableRequest = GetTableRequest.builder() .keyspaceName(keyspaceName) .tableName(tableName) .build(); while (!tableStatus) { response = keyClient.getTable(tableRequest); status = response.statusAsString(); System.out.println(". The table status is " + status); if (status.compareTo("ACTIVE") == 0) { tableStatus = true; } Thread.sleep(500); } List<ColumnDefinition> cols = response.schemaDefinition().allColumns(); for (ColumnDefinition def : cols) { System.out.println("The column name is " + def.name()); System.out.println("The column type is " + def.type()); } } catch (KeyspacesException e) { System.err.println(e.awsErrorDetails().errorMessage()); System.exit(1); } }
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如需詳API細資訊,請參閱AWS SDK for Java 2.x API參考GetTable中的。
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- Kotlin
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- SDK對於科特林
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 suspend fun checkTable( keyspaceNameVal: String?, tableNameVal: String?, ) { var tableStatus = false var status: String var response: GetTableResponse? = null val tableRequest = GetTableRequest { keyspaceName = keyspaceNameVal tableName = tableNameVal } KeyspacesClient { region = "us-east-1" }.use { keyClient -> while (!tableStatus) { response = keyClient.getTable(tableRequest) status = response!!.status.toString() println(". The table status is $status") if (status.compareTo("ACTIVE") == 0) { tableStatus = true } delay(500) } val cols: List<ColumnDefinition>? = response!!.schemaDefinition?.allColumns if (cols != null) { for (def in cols) { println("The column name is ${def.name}") println("The column type is ${def.type}") } } } }
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有API關詳細資訊,請參閱GetTable
中AWS SDK的以取得 Kotlin API 的參考資料
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- Python
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- SDK對於 Python(肉毒桿菌 3)
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 class KeyspaceWrapper: """Encapsulates Amazon Keyspaces (for Apache Cassandra) keyspace and table actions.""" def __init__(self, keyspaces_client): """ :param keyspaces_client: A Boto3 Amazon Keyspaces client. """ self.keyspaces_client = keyspaces_client self.ks_name = None self.ks_arn = None self.table_name = None @classmethod def from_client(cls): keyspaces_client = boto3.client("keyspaces") return cls(keyspaces_client) def get_table(self, table_name): """ Gets data about a table in the keyspace. :param table_name: The name of the table to look up. :return: Data about the table. """ try: response = self.keyspaces_client.get_table( keyspaceName=self.ks_name, tableName=table_name ) self.table_name = table_name except ClientError as err: if err.response["Error"]["Code"] == "ResourceNotFoundException": logger.info("Table %s does not exist.", table_name) self.table_name = None response = None else: logger.error( "Couldn't verify %s exists. Here's why: %s: %s", table_name, err.response["Error"]["Code"], err.response["Error"]["Message"], ) raise return response
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如需詳API細資訊,請參閱GetTable中AWS SDK的〈〉以取得 Python (Boto3) API 參考資料。
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GetKeyspace
ListKeyspaces