PackedLongsPostingList.java
/*
* 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.
*/
package org.apache.cassandra.index.sai.disk.v1.postings;
import org.apache.cassandra.index.sai.postings.PostingList;
import org.apache.lucene.util.packed.PackedLongValues;
/**
* Adapter class for {@link PackedLongValues} to expose it as {@link PostingList}.
*/
public class PackedLongsPostingList implements PostingList
{
private final PackedLongValues.Iterator iterator;
private final PackedLongValues values;
public PackedLongsPostingList(PackedLongValues values)
{
this.values = values;
iterator = values.iterator();
}
@Override
public long nextPosting()
{
if (iterator.hasNext())
{
return iterator.next();
}
else
{
return PostingList.END_OF_STREAM;
}
}
@Override
public long size()
{
return values.size();
}
@Override
public long advance(long targetRowID)
{
throw new UnsupportedOperationException();
}
}