0 as verso batteria of components with attached properties, which collectively describe per Web service. This model is called the Component Model of WSDL 2.0. Verso valid WSDL 2.0 component model is a serie of WSDL 2.0 components and properties that satisfy all the requirements given per this specification as indicated by keywords whose interpretation is defined by RFC 2119 [ IETF RFC 2119 ].
Components are typed collections of properties that correspond preciso different aspects of Web services. Each subsection herein describes verso different type of component, its defined properties, and its representation as an XML Infoset [ XML Information Set ].
Properties are unordered and unique with respect preciso the component they are associated with. Individual properties’ definitions may constrain their content (ed.g., puro verso typed value, another component, or a serie of typed values or components), and components may require the presence of per property sicuro be considered conformant. Such properties are marked as REQUIRED, whereas those that are not required sicuro be present are marked as OPTIONAL. By convention, when specifying the mapping rules from the XML Infoset representation of a component sicuro the component itself, an optional property that is absent sopra the component sopra question is described as being “empty”. Unless otherwise specified, when per property is identified as being verso collection (verso attrezzi or verso list), its value may be verso 0-element (empty) collection. In order esatto simplify the presentation of the rules that deal with sets of components, for all OPTIONAL properties whose type is verso serie, the absence of such per property from verso component MUST be treated as semantically equivalent esatto the presence of a property with the same name and whose value is the empty servizio. In other words, every OPTIONAL serie-valued property MUST be assumed sicuro have the empty arnesi as its default value, esatto be used in case the property is absent.
Component definitions are serializable durante XML 1.0 format but are independent of any particular serialization of the component model. Component definitions use a subset (see 2.14 XML Precisazione 1.0 Simple Types Used durante the Component Model) of the simple types defined by the XML Nota 1.0 specification [ XML Lista: Datatypes ].
Per adjonction onesto the direct XML Infoset representation described here, the component model allows components external esatto the Infoset through the mechanisms described mediante 4. Modularizing WSDL 2.0 descriptions.
2.1 Description
Per component model can be extracted from verso given XML https://datingranking.net/it/older-women-dating-review/ Infoset which conforms sicuro the XML Nota for WSDL 2.0 by recursively mapping Information Items puro their identified components, starting with the wsdl:description element information item. This includes the application of the mechanisms described mediante 4. Modularizing WSDL 2.0 descriptions.
This document does not specify a means of producing an XML Infoset representation from per component model instance. Mediante particular, there are mediante general many valid ways preciso modularize verso given component model instance into one or more XML Infosets.
2.1.1 The Description Component
At a high level, the Description component is just verso container for two categories of components: WSDL 2.0 components and type system components.
Type system components describe the constraints on a message’s content. By default, these constraints are expressed in terms of the [ XML Information Servizio ], i.e. they define the [local name], [namespace name], [children] and [attributes] properties of an element information item. Type systems based upon other scadenza models are generally accommodated by extensions esatto WSDL 2.0; see 6. Language Extensibility. Per the case where they define information equivalent to that of per XML Lista global element declaration, they can be treated as if they were such per declaration.