portType (Analogs to Java interface)
- PortType is an abstraction part of WSDL.
- An abstract set of operations supported by one or more endpoints.
binding
- Binding is an concrete part of WSDL.
- Describes how the operation is invoked by specifying concrete protocol and data format specifications for the operations and messages.
SOAP Binding:
SOAP binding allows eitherdocument
orrpc
style with eitherencoding
orliteral
. Encoding indicates how a data value should be encoded in an XML format (These rules specify how “something” is encoded/serialized to XML and then later decoded/de-serialized from XML back to “something”). Literal means that the data is serialized according to a schema (this is just plain XML data). With transportation type http, jms, smtp…HTTP GET & POST binding:
WSDL includes a binding for HTTP 1.1’s GET and POST verbs in order to describe the interaction between a Web Browser and a web site.MIME binding:
WSDL includes a way to bind abstract types to concrete messages in some MIME format.
In WSDL 2.0 :
- PortTypes renamed to interfaces
- Ports renamed to endpoints
- Removed message constructs
Useful links