com.amazonaws.http

Class StaxResponseHandler<T>

java.lang.Object

com.amazonaws.http.StaxResponseHandler<T>

Type Parameters:

T - Indicates the type being unmarshalled by this response handler.

All Implemented Interfaces:

HttpResponseHandler<AmazonWebServiceResponse<T>>

public class StaxResponseHandler<T>
extends Object
implements HttpResponseHandler<AmazonWebServiceResponse<T>>

Default implementation of HttpResponseHandler that handles a successful response from an AWS service and unmarshalls the result using a StAX unmarshaller.

Field Summary

Fields inherited from interface com.amazonaws.http.HttpResponseHandler

X_AMZ_REQUEST_ID_ALTERNATIVE_HEADER, X_AMZN_EXTENDED_REQUEST_ID_HEADER, X_AMZN_REQUEST_ID_HEADER

Constructor Summary

Constructors

Constructor and Description
StaxResponseHandler(Unmarshaller<T,StaxUnmarshallerContext> responseUnmarshaller) Constructs a new response handler that will use the specified StAX unmarshaller to unmarshall the service response and uses the specified response element path to find the root of the business data in the service's response.
StaxResponseHandler(Unmarshaller<T,StaxUnmarshallerContext> responseUnmarshaller, boolean needsConnectionLeftOpen, boolean isPayloadXML)

Method Summary

Modifier and Type	Method and Description
protected ResponseMetadata	getResponseMetadata(Map<String,String> metadata) Create the default ResponseMetadata.
AmazonWebServiceResponse<T>	handle(HttpResponse response) Accepts an HTTP response object, and returns an object of type T.
boolean	needsConnectionLeftOpen() Since this response handler completely consumes all the data from the underlying HTTP connection during the handle method, we don't need to keep the HTTP connection open in most of the cases.
protected void	registerAdditionalMetadataExpressions(StaxUnmarshallerContext unmarshallerContext) Hook for subclasses to override in order to collect additional metadata from service responses.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

StaxResponseHandler

public StaxResponseHandler(Unmarshaller<T,StaxUnmarshallerContext> responseUnmarshaller,
                           boolean needsConnectionLeftOpen,
                           boolean isPayloadXML)

StaxResponseHandler

public StaxResponseHandler(Unmarshaller<T,StaxUnmarshallerContext> responseUnmarshaller)

Constructs a new response handler that will use the specified StAX unmarshaller to unmarshall the service response and uses the specified response element path to find the root of the business data in the service's response.

Parameters:

responseUnmarshaller - The StAX unmarshaller to use on the response.

Method Detail

handle

public AmazonWebServiceResponse<T> handle(HttpResponse response)
                                   throws Exception

Description copied from interface: HttpResponseHandler

Accepts an HTTP response object, and returns an object of type T. Individual implementations may choose to handle the response however they need to, and return any type that they need to.

Specified by:

handle in interface HttpResponseHandler<AmazonWebServiceResponse<T>>

Parameters:

response - The HTTP response to handle, as received from an AWS service.

Returns:

An object of type T, as defined by individual implementations.

Throws:

Exception - If any problems are encountered handling the response.

See Also:

HttpResponseHandler.handle(HttpResponse)

getResponseMetadata

protected ResponseMetadata getResponseMetadata(Map<String,String> metadata)

Create the default ResponseMetadata. Subclasses may override this to create a subclass of ResponseMetadata. Currently only SimpleDB does this.

registerAdditionalMetadataExpressions

protected void registerAdditionalMetadataExpressions(StaxUnmarshallerContext unmarshallerContext)

Hook for subclasses to override in order to collect additional metadata from service responses.

Parameters:

unmarshallerContext - The unmarshaller context used to configure a service's response data.

needsConnectionLeftOpen

public boolean needsConnectionLeftOpen()

Since this response handler completely consumes all the data from the underlying HTTP connection during the handle method, we don't need to keep the HTTP connection open in most of the cases. However, we need it for payload as InputStream.

Specified by:

needsConnectionLeftOpen in interface HttpResponseHandler<AmazonWebServiceResponse<T>>

Returns:

True if this response handler requires that the underlying HTTP connection be left open, and not automatically closed, otherwise false.

See Also:

HttpResponseHandler.needsConnectionLeftOpen()