com.google.gwt.user.client.rpc

Class RpcRequestBuilder

java.lang.Object

com.google.gwt.user.client.rpc.RpcRequestBuilder

public class RpcRequestBuilder
extends Object

This class encapsulates the logic necessary to configure a RequestBuilder for use with an RPC proxy object. Users who wish to alter the specifics of the HTTP requests issued by RPC proxy objects may override the protected doXyz methods and pass an instance of the subclass to ServiceDefTarget.setRpcRequestBuilder(com.google.gwt.user.client.rpc.RpcRequestBuilder).

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONTENT_TYPE_HEADER Used by doSetContentType(com.google.gwt.http.client.RequestBuilder, java.lang.String).
static String	MODULE_BASE_HEADER Used by doFinish(com.google.gwt.http.client.RequestBuilder).
static String	STRONG_NAME_HEADER Used by doFinish(com.google.gwt.http.client.RequestBuilder).

Constructor Summary

Constructors

Constructor and Description
RpcRequestBuilder()

Method Summary

Modifier and Type	Method and Description
RpcRequestBuilder	create(String serviceEntryPoint) Initialize the RpcRequestBuilder.
protected RequestBuilder	doCreate(String serviceEntryPoint) Called by create(java.lang.String) to instantiate the RequestBuilder object.
protected void	doFinish(RequestBuilder rb) Called by finish() prior to returning the RequestBuilder to the caller.
protected void	doSetCallback(RequestBuilder rb, RequestCallback callback) Called by setCallback(com.google.gwt.http.client.RequestCallback).
protected void	doSetContentType(RequestBuilder rb, String contentType) Called by setContentType(java.lang.String).
protected void	doSetRequestData(RequestBuilder rb, String data) Called by setRequestData(java.lang.String).
protected void	doSetRequestId(RequestBuilder rb, int id) Called by setRequestId(int).
RequestBuilder	finish() This method must be called to return the RequestBuilder that the RPC request will be made with.
RpcRequestBuilder	setCallback(RequestCallback callback) Sets the RequestCallback to be used by the RequestBuilder.
RpcRequestBuilder	setContentType(String contentType) Sets the MIME content type to be used by the RequestBuilder.
RpcRequestBuilder	setRequestData(String data) Sets the request data to be sent in the request.
RpcRequestBuilder	setRequestId(int id) Sets the request id of the request.

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, toString

Field Detail

CONTENT_TYPE_HEADER

public static final String CONTENT_TYPE_HEADER

Used by doSetContentType(com.google.gwt.http.client.RequestBuilder, java.lang.String).

See Also:

Constant Field Values

MODULE_BASE_HEADER

public static final String MODULE_BASE_HEADER

Used by doFinish(com.google.gwt.http.client.RequestBuilder).

See Also:

Constant Field Values

STRONG_NAME_HEADER

public static final String STRONG_NAME_HEADER

Used by doFinish(com.google.gwt.http.client.RequestBuilder).

See Also:

Constant Field Values

Constructor Detail

RpcRequestBuilder

public RpcRequestBuilder()

Method Detail

create

public final RpcRequestBuilder create(String serviceEntryPoint)

Initialize the RpcRequestBuilder. This method must be called before any of the other methods in this class may be called. Calling create before calling finish() will reset the state of the RpcRequestBuilder.

This method delegates to doCreate(java.lang.String) to instantiate the RequestBuilder.

Parameters:

serviceEntryPoint - The URL entry point

Returns:

this

See Also:

ServiceDefTarget.setServiceEntryPoint(String)

finish

public final RequestBuilder finish()

This method must be called to return the RequestBuilder that the RPC request will be made with.

This method will call doFinish(com.google.gwt.http.client.RequestBuilder) before returning the current RequestBuilder.

setCallback

public final RpcRequestBuilder setCallback(RequestCallback callback)

Sets the RequestCallback to be used by the RequestBuilder. Delegates to doSetCallback(com.google.gwt.http.client.RequestBuilder, com.google.gwt.http.client.RequestCallback).

Parameters:

callback - the RequestCallback to be used by the RequestBuilder

Returns:

this

setContentType

public final RpcRequestBuilder setContentType(String contentType)

Sets the MIME content type to be used by the RequestBuilder. Delegates to doSetContentType(com.google.gwt.http.client.RequestBuilder, java.lang.String).

Parameters:

contentType - the MIME content type to be used in the request

Returns:

this

setRequestData

public final RpcRequestBuilder setRequestData(String data)

Sets the request data to be sent in the request. Delegates to doSetRequestData(com.google.gwt.http.client.RequestBuilder, java.lang.String).

Parameters:

data - the data to send

Returns:

this

setRequestId

public final RpcRequestBuilder setRequestId(int id)

Sets the request id of the request. Delegates to doSetRequestId(com.google.gwt.http.client.RequestBuilder, int).

Parameters:

id - the issue number of the request

Returns:

this

doCreate

protected RequestBuilder doCreate(String serviceEntryPoint)

Called by create(java.lang.String) to instantiate the RequestBuilder object.

The default implementation creates a POST RequestBuilder with the given entry point.

Parameters:

serviceEntryPoint - the URL to which the request should be issued

Returns:

the RequestBuilder that should be ultimately passed to the RpcRequestBuilder's caller.

doFinish

protected void doFinish(RequestBuilder rb)

Called by finish() prior to returning the RequestBuilder to the caller.

The default implementation sets the "X-GWT-Permutation" header to the value returned by GWT.getPermutationStrongName().

Parameters:

rb - The RequestBuilder that is currently being configured

doSetCallback

protected void doSetCallback(RequestBuilder rb,
                             RequestCallback callback)

Called by setCallback(com.google.gwt.http.client.RequestCallback).

The default implementation calls RequestBuilder.setCallback(RequestCallback).

Parameters:

rb - the RequestBuilder that is currently being configured

callback - the user-provided callback

doSetContentType

protected void doSetContentType(RequestBuilder rb,
                                String contentType)

Called by setContentType(java.lang.String).

The default implementation sets the "Content-Type" header to the value specified by contentType by calling RequestBuilder.setHeader(String, String).

Parameters:

rb - the RequestBuilder that is currently being configured

contentType - the desired MIME type of the request's contents

doSetRequestData

protected void doSetRequestData(RequestBuilder rb,
                                String data)

Called by setRequestData(java.lang.String).

The default implementation invokes RequestBuilder.setRequestData(String).

Parameters:

rb - the RequestBuilder that is currently being configured

data - the data to send

doSetRequestId

protected void doSetRequestId(RequestBuilder rb,
                              int id)

Called by setRequestId(int).

The default implementation is a no-op.

Parameters:

rb - the RequestBuilder that is currently being configured

id - the request's issue id