Provide an convenience AttributeFactory that implements all default attributes
with Token
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Key: LUCENE-1933
URL: https://issues.apache.org/jira/browse/LUCENE-1933
Project: Lucene - Java
Issue Type: Improvement
Affects Versions: 2.9
Reporter: Uwe Schindler
Assignee: Uwe Schindler
Fix For: 3.0
I found some places in contrib tests, where the Token.class was added using
addAttributeImpl(). The problem here is, that you cannot be sure, that the
attribute is really added and you may fail later (because you only update your
local instance). The tests in contrib will partially fail with 3.0 without
backwards layer (because the backwards layer uses Token/TokenWrapper internally
and copyTo() will work.
The correct way to achieve this is using an AttributeFactory. The
AttributeFactory is currently private in EmptyTokenTokenStream. I want to move
it to Token.java as a static class / static member. In this case the tests can
be rewritten
I also want to mark addAttributeImpl() as EXPERT, because you must really know
whats happening and what are the traps.
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