public class PrefixAndSuffixAwareTokenFilter extends TokenStream
Constructor and Description |
---|
PrefixAndSuffixAwareTokenFilter(TokenStream prefix,
TokenStream input,
TokenStream suffix) |
Modifier and Type | Method and Description |
---|---|
void |
close()
Releases resources associated with this stream.
|
Token |
next(Token reusableToken)
Returns the next token in the stream, or null at EOS.
|
void |
reset()
Resets this stream to the beginning.
|
Token |
updateInputToken(Token inputToken,
Token lastPrefixToken) |
Token |
updateSuffixToken(Token suffixToken,
Token lastInputToken) |
next
public PrefixAndSuffixAwareTokenFilter(TokenStream prefix, TokenStream input, TokenStream suffix)
public Token next(Token reusableToken) throws IOException
TokenStream
This implicitly defines a "contract" between consumers (callers of this method) and producers (implementations of this method that are the source for tokens):
Token.clear()
before setting the fields in it & returning itTokenFilter
is considered a consumer.next
in class TokenStream
reusableToken
- a Token that may or may not be used to
return; this parameter should never be null (the callee
is not required to check for null before using it, but it is a
good idea to assert that it is not null.)IOException
public void reset() throws IOException
TokenStream
reset
in class TokenStream
IOException
public void close() throws IOException
TokenStream
close
in class TokenStream
IOException
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