FileDocCategorySizeDatePackage
PhrasePositions.javaAPI DocApache Lucene 1.4.31948Fri Oct 01 10:29:48 BST 2004org.apache.lucene.search

PhrasePositions

public final class PhrasePositions extends Object
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.

Fields Summary
int
doc
int
position
int
count
int
offset
TermPositions
tp
PhrasePositions
next
Constructors Summary
PhrasePositions(TermPositions t, int o)

    tp = t;
    offset = o;
Methods Summary
final voidfirstPosition()

    count = tp.freq();				  // read first pos
    nextPosition();
final booleannext()

	  // increments to next doc
    if (!tp.next()) {
      tp.close();				  // close stream
      doc = Integer.MAX_VALUE;			  // sentinel value
      return false;
    }
    doc = tp.doc();
    position = 0;
    return true;
final booleannextPosition()

    if (count-- > 0) {				  // read subsequent pos's
      position = tp.nextPosition() - offset;
      return true;
    } else
      return false;
final booleanskipTo(int target)

    if (!tp.skipTo(target)) {
      tp.close();				  // close stream
      doc = Integer.MAX_VALUE;			  // sentinel value
      return false;
    }
    doc = tp.doc();
    position = 0;
    return true;