If per Web service requires per client onesto follow verso particular convention that is likely puro be automatable mediante WSDL 2.0 toolkits, then that convention SHOULD be indicated mediante the WSDL 2.0 document as per wsdl:required extension, rather than just being conveyed out of band, even if that convention is not currently implemented in WSDL 2.0 toolkits.

This practice will help prevent interoperability problems that could arise if one toolkit requires a particular convention that is not indicated durante the WSDL 2.0 document, while another toolkit does not realize that that convention is required. 0 toolkits.

On the other hand, a client MAY engage an extension that is declared as optional per the WSDL 2.0 document. Therefore, the Web service MUST support every extension that is declared as optional mediante the WSDL 2.0 document, mediante prime esatto supporting every extension that is declared as mandatory. †

If finer-grain, direction-sensitive control of extensions is desired, then such extensions may be designed per a direction-compatissante manner (from the client or from the Web service) so that either direction ple, instead of defining verso celibe extension that governs both directions, two extensions could be defined -one for each direction.

Validity of verso WSDL 2.0 document can only be assessed within the context of verso attrezzi of supported extensions. Per WSDL 2.0 document that contains per required but unsupported extension is invalid with respect esatto that set of supported extensions.

6.1.2 required attribute information item

The type of the required attribute information item is xs:boolean. Its default value is “false” (hence extensions are NOT required by default).

6.2 Attribute-based Extensibility

WSDL 2.0 allows qualified attribute information items whose [namespace name] is NOT “” sicuro appear on any element information item whose namespace name IS “”. Such attribute information items can be used to annotate WSDL 2.0 constructs such as interfaces, bindings, etc.

6.3 Extensibility Semantics

As indicated above, it is expected that the presence of extension elements and attributes will result in additional datingranking.net/it/only-lads-review properties appearing mediante the component model.

The presence of an optional extension element or attribute MAY therefore augment the semantics of a WSDL 2.0 document con ways that do not invalidate the existing semantics. However, the presence of per mandatory extension element MAY alter the semantics of a WSDL 2.0 document con ways that invalidate the existing semantics.

Note that, however, once the client and service both know that an optional extension has been engaged (because the service has received per message explicitly engaging that extension, for example), then the semantics of that extension supersede what the WSDL 2.0 document indicated. For example, the WSDL 2.0 document may have specified an XML message elenco to be used, but also indicated an optional security extension that encrypts the messages. If the security extension is engaged, then the encrypted messages will mai longer conform onesto the specified message schema (until they are decrypted).

Authors of extension elements should make sure puro include sopra the specification of these elements per clear statement of the requirements for document conformance (see 1.3 Document Conformance).

Authors of extension elements that may manifest as properties of the Description component should be aware of the impact of imports on their extensions, or of their extensions on imports. It is not possible, within the component model, puro define extensions that have an effective scope equal esatto the scope of verso containing file. Extensions that modify the behavior of the components contained con per description may therefore unexpectedly modify the behavior of components durante imported descriptions as well, unless proper care is taken.