readnwrite Sample

<< Capturing the Event Stream | Creating an Event Producer >>

READNWRITE

AMPLE

 E

VENT

RODUCER

ONSUMER

JAVA

111

Running the Sample

When you run the

MyStreamFilter

sample, the class is compiled, and the XML

stream is parsed as events and returned to

STDOUT

. For example an

Author

event

is returned as follows:

EVENT TYPE(1):START_ELEMENT
HAS NAME: Author
HAS NO TEXT
HAS NO ATTRIBUTES
-----------------------------
EVENT TYPE(2):END_ELEMENT
HAS NAME: Author
HAS NO TEXT
-----------------------------

Similarly, a

Cost

event is returned as follows:

EVENT TYPE(1):START_ELEMENT
HAS NAME: Cost
HAS NO TEXT

HAS ATTRIBUTES:
ATTRIBUTE-PREFIX:
ATTRIBUTE-NAMESP: null
ATTRIBUTE-NAME: currency
ATTRIBUTE-VALUE: USD
ATTRIBUTE-TYPE: CDATA

-----------------------------
EVENT TYPE(2):END_ELEMENT
HAS NAME: Cost
HAS NO TEXT
-----------------------------

See earlier in this chapter, in the "Iterator API" and "Reading XML Streams"
sections, for a more detailed discussion of StAX event parsing.

readnwrite Sample
EventProducerConsumer.java

Located in the

<javaee.tutorial.home>/examples/stax/

readnwrite direc-

tory,

EventProducerConsumer.java

demonstrates how to use a StAX parser

simultaneously as both a producer and a consumer.