XML құбырлары және XProc стандарты

Part of Extensible Markup Language
In software, an XML pipeline is formed when XML (Extensible Markup Language) processes, especially XML transformations and XML validations, are connected. For instance, given two transformations T1 and T2, the two can be connected so that an input XML document is transformed by T1 and then the output of T1 is fed as input document to T2. Simple pipelines like the one described above are called linear; a single input document always goes through the same sequence of transformations to produce a single output document.

XML pipeline languages are used to define pipelines. A program written with an XML pipeline language is implemented by software known as an XML pipeline engine, which creates processes, connects them together and finally executes the pipeline. Existing XML pipeline languages include:

XProc: An XML Pipeline Language is a W3C Recommendation for defining linear and non linear XML pipelines.

Different XML Pipeline implementations support different granularity of flow. Document: Whole documents flow through the pipe as atomic units. A document can only be in one place at a time. Though usually multiple documents may be in the pipe at once. Event: Element/Text nodes events may flow through different paths. A document may be concurrently flowing through many components at the same time.

Until May 2010, there was no widely used standard for XML pipeline languages. However, with the introduction of the W3C XProc standard as a W3C Recommendation as of May 2010, widespread adoption can be expected.