文件 AWS 開發套件範例 GitHub 儲存庫中有更多可用的 [AWS SDK 範例](https://github.com/awsdocs/aws-doc-sdk-examples)。

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。

# `DeleteSchemaMapping` 搭配 AWS SDK 使用
<a name="entityresolution_example_entityresolution_DeleteSchemaMapping_section"></a>

下列程式碼範例示範如何使用 `DeleteSchemaMapping`。

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：
+  [了解基本概念](entityresolution_example_entityresolution_Scenario_section.md) 

------
#### [ Java ]

**SDK for Java 2.x**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javav2/example_code/entityresolution#code-examples)中設定和執行。

```
    /**
     * Deletes the schema mapping asynchronously.
     *
     * @param schemaName the name of the schema to delete
     * @return a {@link CompletableFuture} that completes when the schema mapping is deleted successfully,
     * or throws a {@link RuntimeException} if the deletion fails
     */
    public CompletableFuture<DeleteSchemaMappingResponse> deleteSchemaMappingAsync(String schemaName) {
        DeleteSchemaMappingRequest request = DeleteSchemaMappingRequest.builder()
            .schemaName(schemaName)
            .build();

        return getResolutionAsyncClient().deleteSchemaMapping(request)
            .whenComplete((response, exception) -> {
                if (response != null) {
                    // Successfully deleted the schema mapping, log the success message.
                    logger.info("Schema mapping '{}' deleted successfully.", schemaName);
                } else {
                    // Ensure exception is not null before accessing its cause.
                    if (exception == null) {
                        throw new CompletionException("An unknown error occurred while deleting the schema mapping.", null);
                    }

                    Throwable cause = exception.getCause();
                    if (cause instanceof ResourceNotFoundException) {
                        throw new CompletionException("The schema mapping was not found to delete: " + schemaName, cause);
                    }

                    // Wrap other AWS exceptions in a CompletionException.
                    throw new CompletionException("Failed to delete schema mapping: " + schemaName, exception);
                }
            });
    }
```
+  如需 API 詳細資訊，請參閱《*AWS SDK for Java 2.x API 參考*》中的 [DeleteSchemaMapping](https://docs.aws.amazon.com/goto/SdkForJavaV2/entityresolution-2018-05-10/DeleteSchemaMapping)。

------
#### [ JavaScript ]

**適用於 JavaScript (v3) 的 SDK**  
 GitHub 上提供更多範例。尋找完整範例，並了解如何在 [AWS 程式碼範例儲存庫](https://github.com/awsdocs/aws-doc-sdk-examples/tree/main/javascriptv3/example_code/entityresolution#code-examples)中設定和執行。

```
//The default inputs for this demo are read from the ../inputs.json.

import { fileURLToPath } from "node:url";

import {
  DeleteSchemaMappingCommand,
  EntityResolutionClient,
} from "@aws-sdk/client-entityresolution";
import data from "../inputs.json" with { type: "json" };

const region = "eu-west-1";
const erClient = new EntityResolutionClient({ region: region });

export const main = async () => {
  const deleteSchemaMapping = {
    schemaName: `${data.inputs.schemaNameJson}`,
  };
  try {
    const command = new DeleteSchemaMappingCommand(deleteSchemaMapping);
    const response = await erClient.send(command);
    console.log("Schema mapping deleted successfully. ", response);
  } catch (error) {
    console.log("error ", error);
  }
};
```
+  如需 API 詳細資訊，請參閱《*適用於 JavaScript 的 AWS SDK API 參考*》中的 [DeleteSchemaMapping](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/entityresolution/command/DeleteSchemaMappingCommand)。

------