public final class MockGraphTokenFilter extends LookaheadTokenFilter<LookaheadTokenFilter.Position>
LookaheadTokenFilter.Position
AttributeSource.State
end, inputPos, offsetAtt, outputPos, posIncAtt, positions, posLenAtt
input
DEFAULT_TOKEN_ATTRIBUTE_FACTORY
Constructor and Description |
---|
MockGraphTokenFilter(Random random,
TokenStream input) |
Modifier and Type | Method and Description |
---|---|
protected void |
afterPosition()
This is called when all input tokens leaving a given
position have been returned.
|
void |
close()
Releases resources associated with this stream.
|
boolean |
incrementToken()
Consumers (i.e.,
IndexWriter ) use this method to advance the stream to
the next token. |
protected LookaheadTokenFilter.Position |
newPosition() |
void |
reset()
This method is called by a consumer before it begins consumption using
TokenStream.incrementToken() . |
insertToken, nextToken, peekToken
end
addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, restoreState, toString
public MockGraphTokenFilter(Random random, TokenStream input)
protected LookaheadTokenFilter.Position newPosition()
newPosition
in class LookaheadTokenFilter<LookaheadTokenFilter.Position>
protected void afterPosition() throws IOException
LookaheadTokenFilter
afterPosition
in class LookaheadTokenFilter<LookaheadTokenFilter.Position>
IOException
public void reset() throws IOException
TokenFilter
TokenStream.incrementToken()
.
Resets this stream to a clean state. Stateful implementations must implement this method so that they can be reused, just as if they had been created fresh.
If you override this method, always call super.reset()
, otherwise
some internal state will not be correctly reset (e.g., Tokenizer
will
throw IllegalStateException
on further usage).
NOTE:
The default implementation chains the call to the input TokenStream, so
be sure to call super.reset()
when overriding this method.
reset
in class LookaheadTokenFilter<LookaheadTokenFilter.Position>
IOException
public void close() throws IOException
TokenFilter
If you override this method, always call super.close()
, otherwise
some internal state will not be correctly reset (e.g., Tokenizer
will
throw IllegalStateException
on reuse).
NOTE:
The default implementation chains the call to the input TokenStream, so
be sure to call super.close()
when overriding this method.
close
in interface Closeable
close
in interface AutoCloseable
close
in class TokenFilter
IOException
public boolean incrementToken() throws IOException
TokenStream
IndexWriter
) use this method to advance the stream to
the next token. Implementing classes must implement this method and update
the appropriate AttributeImpl
s with the attributes of the next
token.
The producer must make no assumptions about the attributes after the method
has been returned: the caller may arbitrarily change it. If the producer
needs to preserve the state for subsequent calls, it can use
AttributeSource.captureState()
to create a copy of the current attribute state.
This method is called for every token of a document, so an efficient
implementation is crucial for good performance. To avoid calls to
AttributeSource.addAttribute(Class)
and AttributeSource.getAttribute(Class)
,
references to all AttributeImpl
s that this stream uses should be
retrieved during instantiation.
To ensure that filters and consumers know which attributes are available,
the attributes must be added during instantiation. Filters and consumers
are not required to check for availability of attributes in
TokenStream.incrementToken()
.
incrementToken
in class TokenStream
IOException
Copyright © 2000–2015 The Apache Software Foundation. All rights reserved.