File Doc Category Size Date Package
SegmentTermPositions.java API Doc Apache Lucene 2.1.0 3824 Wed Feb 14 10:46:40 GMT 2007 org.apache.lucene.index

SegmentTermPositions

java.lang.Object
- org.apache.lucene.index.SegmentTermDocs

public final class SegmentTermPositions extends SegmentTermDocs implements TermPositions

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You 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
private IndexInput
proxStream
private int
proxCount
private int
position
private long
lazySkipPointer
private int
lazySkipDocCount
Constructors Summary
SegmentTermPositions(SegmentReader p)
super(p); this.proxStream = (IndexInput)parent.proxStream.clone();
Methods Summary
public final void close()
super.close(); proxStream.close();
private void lazySkip()
if (lazySkipPointer != 0) { proxStream.seek(lazySkipPointer); lazySkipPointer = 0; } if (lazySkipDocCount != 0) { skipPositions(lazySkipDocCount); lazySkipDocCount = 0; }
public final boolean next()
// we remember to skip a document lazily lazySkipDocCount += proxCount; if (super.next()) { // run super proxCount = freq; // note frequency position = 0; // reset position return true; } return false;
public final int nextPosition()
// perform lazy skips if neccessary lazySkip(); proxCount--; return position += proxStream.readVInt();
public final int read(int[] docs, int[] freqs)
throw new UnsupportedOperationException("TermPositions does not support processing multiple documents in one call. Use TermDocs instead.");
final void seek(org.apache.lucene.index.TermInfo ti)
super.seek(ti); if (ti != null) lazySkipPointer = ti.proxPointer; lazySkipDocCount = 0; proxCount = 0;
private void skipPositions(int n)
for (int f = n; f > 0; f--) // skip unread positions proxStream.readVInt();
protected void skipProx(long proxPointer)
Called by super.skipTo().
// we save the pointer, we might have to skip there lazily lazySkipPointer = proxPointer; lazySkipDocCount = 0; proxCount = 0;
protected final void skippingDoc()
// we remember to skip the remaining positions of the current // document lazily lazySkipDocCount += freq;