package org.apache.lucene.index;
/**
* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import java.io.IOException;
/**
* TermPositions provides an interface for enumerating the <document,
* frequency, <position>* > tuples for a term. <p> The document and
* frequency are the same as for a TermDocs. The positions portion lists the ordinal
* positions of each occurrence of a term in a document.
*
* @see IndexReader#termPositions()
*/
public interface TermPositions
extends TermDocs
{
/** Returns next position in the current document. It is an error to call
this more than {@link #freq()} times
without calling {@link #next()}<p> This is
invalid until {@link #next()} is called for
the first time.
*/
int nextPosition() throws IOException;
}
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