Package org.apache.lucene.analysis.miscellaneous

# Class LimitTokenOffsetFilter

java.lang.Object
org.apache.lucene.util.AttributeSource
org.apache.lucene.analysis.TokenStream
org.apache.lucene.analysis.TokenFilter
org.apache.lucene.analysis.miscellaneous.LimitTokenOffsetFilter

All Implemented Interfaces:
  `Closeable`, `AutoCloseable`, `Unwrappable<TokenStream>`

public final class LimitTokenOffsetFilter extends TokenFilter
Lets all tokens pass through until it sees one with a start offset <= a configured limit, which won't pass and ends the stream. This can be useful to limit highlighting, for example.

By default, this filter ignores any tokens in the wrapped `TokenStream` once the limit has been exceeded, which can result in `reset()` being called prior to `incrementToken()` returning `false`. For most `TokenStream` implementations this should be acceptable, and faster then consuming the full stream. If you are wrapping a `TokenStream` which requires that the full stream of tokens be exhausted in order to function properly, use the `LimitTokenOffsetFilter(TokenStream, int, boolean)` option.

- ## Nested Class Summary

  ## Nested classes/interfaces inherited from class org.apache.lucene.util.AttributeSource

  `AttributeSource.State`

- ## Field Summary

  ### Fields inherited from class org.apache.lucene.analysis.TokenFilter

  `input`

  ### Fields inherited from class org.apache.lucene.analysis.TokenStream

  `DEFAULT_TOKEN_ATTRIBUTE_FACTORY`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `LimitTokenOffsetFilter(TokenStream input, int maxStartOffset)`
  Lets all tokens pass through until it sees one with a start offset <= `maxStartOffset` which won't pass and ends the stream.
  `LimitTokenOffsetFilter(TokenStream input, int maxStartOffset, boolean consumeAllTokens)`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `incrementToken()`

  ### Methods inherited from class org.apache.lucene.analysis.TokenFilter

  `close, end, reset, unwrap`

  ### Methods inherited from class org.apache.lucene.util.AttributeSource

  `addAttribute, addAttributeImpl, captureState, clearAttributes, cloneAttributes, copyTo, endAttributes, equals, getAttribute, getAttributeClassesIterator, getAttributeFactory, getAttributeImplsIterator, hasAttribute, hasAttributes, hashCode, reflectAsString, reflectWith, removeAllAttributes, restoreState, toString`

  ### Methods inherited from class java.lang.Object

  `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- ## Constructor Details

  - ### LimitTokenOffsetFilter

    public LimitTokenOffsetFilter(TokenStream input, int maxStartOffset)
    Lets all tokens pass through until it sees one with a start offset <= `maxStartOffset` which won't pass and ends the stream. It won't consume any tokens afterwards.
    Parameters:
      `maxStartOffset` - the maximum start offset allowed

  - ### LimitTokenOffsetFilter

    public LimitTokenOffsetFilter(TokenStream input, int maxStartOffset, boolean consumeAllTokens)

- ## Method Details

  - ### incrementToken

    public boolean incrementToken() throws IOException
    Specified by:
      `incrementToken` in class `TokenStream`
    Throws:
      `IOException`