Package org.apache.lucene.search.suggest

Class InputIterator.InputIteratorWrapper

java.lang.Object

org.apache.lucene.search.suggest.InputIterator.InputIteratorWrapper

All Implemented Interfaces:

InputIterator, BytesRefIterator

Enclosing interface:

InputIterator

public static class InputIterator.InputIteratorWrapper
extends Object
implements InputIterator

Wraps a BytesRefIterator as a suggester InputIterator, with all weights set to 1 and carries no payload

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.lucene.search.suggest.InputIterator

InputIterator.InputIteratorWrapper

Field Summary

Fields inherited from interface org.apache.lucene.search.suggest.InputIterator

EMPTY

Constructor Summary

Constructors

Constructor	Description
InputIteratorWrapper(BytesRefIterator wrapped)	Creates a new wrapper, wrapping the specified iterator and specifying a weight value of 1 for all terms and nullifies associated payloads.

Method Summary

Modifier and Type	Method	Description
Set<BytesRef>	contexts()	A term's contexts context can be used to filter suggestions.
boolean	hasContexts()	Returns true if the iterator has contexts
boolean	hasPayloads()	Returns true if the iterator has payloads
BytesRef	next()	Increments the iteration to the next BytesRef in the iterator.
BytesRef	payload()	An arbitrary byte[] to record per suggestion.
long	weight()	A term's weight, higher numbers mean better suggestions.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InputIteratorWrapper

public InputIteratorWrapper(BytesRefIterator wrapped)

Creates a new wrapper, wrapping the specified iterator and specifying a weight value of 1 for all terms and nullifies associated payloads.

Method Detail

weight

public long weight()

Description copied from interface: InputIterator

A term's weight, higher numbers mean better suggestions.

Specified by:

weight in interface InputIterator

next

public BytesRef next()
              throws IOException

Description copied from interface: BytesRefIterator

Increments the iteration to the next BytesRef in the iterator. Returns the resulting BytesRef or null if the end of the iterator is reached. The returned BytesRef may be re-used across calls to next. After this method returns null, do not call it again: the results are undefined.

Specified by:

next in interface BytesRefIterator

Returns:

the next BytesRef in the iterator or null if the end of the iterator is reached.

Throws:

IOException - If there is a low-level I/O error.

payload

public BytesRef payload()

Description copied from interface: InputIterator

An arbitrary byte[] to record per suggestion. See Lookup.LookupResult.payload to retrieve the payload for each suggestion.

Specified by:

payload in interface InputIterator

hasPayloads

public boolean hasPayloads()

Description copied from interface: InputIterator

Returns true if the iterator has payloads

Specified by:

hasPayloads in interface InputIterator

contexts

public Set<BytesRef> contexts()

Description copied from interface: InputIterator

A term's contexts context can be used to filter suggestions. May return null, if suggest entries do not have any context

Specified by:

contexts in interface InputIterator

hasContexts

public boolean hasContexts()

Description copied from interface: InputIterator

Returns true if the iterator has contexts

Specified by:

hasContexts in interface InputIterator