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The AWS SDK for Java with support for OSGi. The AWS SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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package com.amazonaws.protocol.json;

import com.amazonaws.annotation.SdkInternalApi;
import com.amazonaws.http.JsonErrorResponseHandler;
import com.amazonaws.http.JsonResponseHandler;
import com.amazonaws.transform.JsonErrorUnmarshaller;
import com.amazonaws.transform.JsonUnmarshallerContext;
import com.amazonaws.transform.Unmarshaller;

import java.util.List;

/**
 * Common interface for creating generators (writers) and protocol handlers for JSON like protocols.
 * Current implementations include {@link SdkStructuredPlainJsonFactory} and {@link
 * SdkStructuredCborFactory}
 */
@SdkInternalApi
interface SdkStructuredJsonFactory {

    /**
     * Returns the {@link StructuredJsonGenerator} to be used for marshalling the request.
     *
     * @param protocolVersion AWS JSON/CBOR protocol version.
     */
    StructuredJsonGenerator createWriter(String protocolVersion);

    /**
     * Returns the response handler to be used for handling a successfull response.
     *
     * @param operationMetadata Additional context information about an operation to create the
     *                          appropriate response handler.
     */
     JsonResponseHandler createResponseHandler(JsonOperationMetadata operationMetadata, Unmarshaller responseUnmarshaller);

    /**
     * Returns the error response handler for handling a error response.
     *
     * @param errorUnmarshallers Response unmarshallers to unamrshall the error responses.
     */
    JsonErrorResponseHandler createErrorResponseHandler(
            List errorUnmarshallers, String customErrorCodeFieldName);
}