Package mondrian.xmla

Interface XmlaRequestCallback

All Known Implementing Classes:

AuthenticatingXmlaRequestCallback

public interface XmlaRequestCallback

Extract data from HTTP request, SOAP header for following XML/A request.

Fill context binding with whatever data you want, then use them in XmlaServlet.handleSoapHeader(javax.servlet.http.HttpServletResponse, org.w3c.dom.Element[], byte[][], java.util.Map<java.lang.String, java.lang.Object>) and XmlaServlet.handleSoapBody(javax.servlet.http.HttpServletResponse, org.w3c.dom.Element[], byte[][], java.util.Map<java.lang.String, java.lang.Object>).

Author:

Gang Chen

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	XmlaRequestCallback.Helper

Field Summary

Fields

Modifier and Type	Field	Description
static String	AUTHORIZATION
static String	EXPECT
static String	EXPECT_100_CONTINUE

Method Summary

Modifier and Type	Method	Description
String	generateSessionId(Map<String,Object> context)	The Callback is requested to generate a sequence id string.
void	init(javax.servlet.ServletConfig servletConfig)
void	postAction(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, byte[][] responseSoapParts, Map<String,Object> context)	This is called after all Mondrian processing (DISCOVER/EXECUTE) has occurred.
void	preAction(javax.servlet.http.HttpServletRequest request, Element[] requestSoapParts, Map<String,Object> context)	This is called after the headers have been process but before the body (DISCOVER/EXECUTE) has been processed.
boolean	processHttpHeader(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, Map<String,Object> context)	Process the request header items.

Field Detail

AUTHORIZATION

static final String AUTHORIZATION

See Also:

Constant Field Values

EXPECT

static final String EXPECT

See Also:

Constant Field Values

EXPECT_100_CONTINUE

static final String EXPECT_100_CONTINUE

See Also:

Constant Field Values

Method Detail

init

void init(javax.servlet.ServletConfig servletConfig)
   throws javax.servlet.ServletException

Throws:

javax.servlet.ServletException

processHttpHeader

boolean processHttpHeader(javax.servlet.http.HttpServletRequest request,
                          javax.servlet.http.HttpServletResponse response,
                          Map<String,Object> context)
                   throws Exception

Process the request header items. Specifically if present the Authorization and Expect headers. If the Authorization header is present, then the callback can validate the user/password. If authentication fails, the callback should throw an XmlaException with the correct XmlaConstants values. The XmlaRequestCallback.Helper class contains the authorizationException method that can be used by a callback to generate the XmlaException with the correct values. If the Expect header is set with "100-continue", then it is upto the callback to create the appropriate response and return false. In this case, the XmlaServlet stops processing and returns the response to the client application. To facilitate the generation of the response, the XmlaRequestCallback.Helper has the method generatedExpectResponse that can be called by the callback.

Note that it is upto the XMLA client to determine whether or not there is an Expect header entry (ADOMD.NET seems to like to do this).

Returns:

true if XmlaServlet handling is to continue and false if there was an Expect header "100-continue".

Throws:

Exception

preAction

void preAction(javax.servlet.http.HttpServletRequest request,
               Element[] requestSoapParts,
               Map<String,Object> context)
        throws Exception

This is called after the headers have been process but before the body (DISCOVER/EXECUTE) has been processed.

Throws:

Exception

generateSessionId

String generateSessionId(Map<String,Object> context)

The Callback is requested to generate a sequence id string. This sequence id was requested by the XMLA client and will be used for all subsequent communications in the Soap Header block. Implementation can return null if they do not want to generate a custom session ID, in which case, the default algorithm to generate session IDs will be used.

Parameters:

context - The context of this query.

Returns:

An arbitrary session id to use, or null.

postAction

void postAction(javax.servlet.http.HttpServletRequest request,
                javax.servlet.http.HttpServletResponse response,
                byte[][] responseSoapParts,
                Map<String,Object> context)
         throws Exception

This is called after all Mondrian processing (DISCOVER/EXECUTE) has occurred.

Throws:

Exception