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The following page has been changed by cr22rc: http://wiki.apache.org/ws/Tuscany/TuscanyJava/SCA_Java/ConversationWSBinding New page: = Proposal for Conversation Web Services Binding = The following is a proposed standard for a web services message exchange pattern to establish a conversation ID between client and server for SCA conversational support. == Motivation == Other existing open web services standards don't cover or completely specify an exchange to establish a conversation in a fully interoperable manor. * WSA Specifies the form and semantics of an Endpoint reference (EPR). It doesn't cover how endpoint references are created or exchanged. * WSRF does not standardize how EPRs to stateful resources are created. In addition, it specifies resource properties which go beyond SCA conversational requirements. == Overview == The following proposes using a standard EPR in the SOAP header upon the first invocation of an operation on an interface with a conversation scope to contain the conversation id. == Example SCA Conversation EPR == {{{ <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; xmlns:wsa="http://www.w3.org/2005/08/addressing";> <S:Header> <scaNS:ConversationReference xmlns:scaNS="http://www.osoa.org/xmlns/sca/1.0";> <wsa:Address>http://someuri</wsa:Address> <wsa:ReferenceParameters> <scaNS:conversationID>xs:any*</scaNS:conversationID> </wsa:ReferenceParameters> </scaNS:ConversationReference> </S:Header> <S:Body> .... </S:Body> </S:Envelope> }}} /scaNS:ConversationReference This element contained in the SOAP HEADER is recognised as the beggining of a new SCA conversation. It is of type http://www.w3.org/2005/08/addressing EndpointReferenceType /scaNS:ConversationReference/wsa:Address This element contained in the scaNS:ConversationReference element specifies the [address] property of the endpoint reference. /scaNS:ConversationReference/wsa:ReferenceParameters This element contained in the scaNS:ConversationReference element is identical to it use in WS-A except its use is REQUIRED. /scaNS:ConversationReference/wsa:ReferenceParameters/scaNS:conversationID This REQUIRED element contained in a wsa:ReferenceParameters element contains the XML representation of the conversationID. All other elements MUST conform as specifed in WS-Addressing's wsa:EndpointReference. Optionally, the response MAY contain in a SOAP HEADER element an EPR which is to be used for subsequent operations in the conversation. If not present the Request EPR will be used. == Example calculator exchange. Sum numbers, get result == {{{ @Remoteable @Session("CONVERSATIONAL") public interface Calculator{ public void add( int op); public int getSum(); @EndConversation public void off(); } }}} === Add 1: === {{{ Request: <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; xmlns:wsa="http://www.w3.org/2005/08/addressing";> <S:Header> <scaNS:ConversationReference xmlns:scaNS="http://www.osoa.org/xmlns/sca/1.0";> <wsa:Address>http://calculator/sum</wsa:Address> <wsa:ReferenceParameters> <scaNS:conversationID>03c77215-4717-11d8-ac80-0090272ff725</scaNS:conversationID> </wsa:ReferenceParameters> </scaNS:ConversationReference> </S:Header> <S:Body> <calc:add xmlns:calc="http://calculator/sum";>1</calc:add> </S:Body> </S:Envelope> Response: <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; <S:Body> <calc:addResponse xmlns:calc="http://calculator/sum"/> </S:Body> </S:Envelope> }}} === Add 2: === {{{ Request: <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; xmlns:wsa="http://www.w3.org/2005/08/addressing";> <S:Header> <scaNS:conversationID>03c77215-4717-11d8-ac80-0090272ff725</scaNS:conversationID> </S:Header> <S:Body> <calc:add xmlns:calc="http://calculator/sum";>3</calc:add> </S:Body> </S:Envelope> Response: <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; <S:Body> <calc:addResponse xmlns:calc="http://calculator/sum"/> </S:Body> </S:Envelope> }}} === Get sum: === {{{ Request: <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; xmlns:wsa="http://www.w3.org/2005/08/addressing";> <S:Header> <scaNS:conversationID>03c77215-4717-11d8-ac80-0090272ff725</scaNS:conversationID> </S:Header> <S:Body> <calc:getSum xmlns:calc="http://calculator/sum"/> </S:Body> </S:Envelope> Response: <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; <S:Body> <calc:geSumtResponse xmlns:calc="http://calculator/sum";>3</calc:geSumtResponse> </S:Body> </S:Envelope> }}} === Off: === {{{ <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; xmlns:wsa="http://www.w3.org/2005/08/addressing";> <S:Header> <scaNS:conversationID>03c77215-4717-11d8-ac80-0090272ff725</scaNS:conversationID> </S:Header> <S:Body> <calc:off xmlns:calc="http://calculator/sum"/> </S:Body> </S:Envelope> Response: <S:Envelope xmlns:S="http://www.w3.org/2003/05/soap-envelope"; <S:Body> <calc:offResponse xmlns:calc="http://calculator/sum"; /> </S:Body> </S:Envelope> }}} --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
