Interface implemented by
This package and its subpackages defines several extensions to the StAX API, more precisely for the
The reader or writer wishing to support the
extension MAY implement the corresponding interface directly, but a consumer MUST use
the property mechanism to get a reference to this extension interface, i.e. it MUST call
XMLStreamWriter.getProperty(String). Each of the extension interfaces in
this package defines a constant for the property name to use.
The rationale for this requirement is that a property based approach continues to work even if the
stream implementing the extension is accessed indirectly through a proxy implementing the
XMLStreamWriter interface but unaware
of the extensions defined in this package. Note that this assumes that the proxy correctly delegates calls to the
The property returning the extension interface MUST be available regardless of the current state of
the stream. In addition it is assumed to be immutable, i.e. its value MUST NOT not change during the
lifetime of the
implementation. For a consumer it is therefore sufficient to look up the extension once and to
continue using the obtained reference during the entire lifetime of the stream.
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