org.apache.cassandra.index.sai.postings.IntArrayPostingList Maven / Gradle / Ivy
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The Apache Cassandra Project develops a highly scalable second-generation distributed database, bringing together Dynamo's fully distributed design and Bigtable's ColumnFamily-based data model.
/*
* 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.postings;
import com.google.common.base.MoreObjects;
public class IntArrayPostingList implements OrdinalPostingList
{
private final int[] postings;
private int idx = 0;
public IntArrayPostingList(int[] postings)
{
this.postings = postings;
}
@Override
public long getOrdinal()
{
return idx;
}
@Override
public long nextPosting()
{
if (idx >= postings.length)
{
return PostingList.END_OF_STREAM;
}
return postings[idx++];
}
@Override
public long size()
{
return postings.length;
}
@Override
public long advance(long targetRowID)
{
for (int i = idx; i < postings.length; ++i)
{
final int segmentRowId = getPostingAt(i);
idx++;
if (segmentRowId >= targetRowID)
{
return segmentRowId;
}
}
return PostingList.END_OF_STREAM;
}
@Override
public String toString()
{
return MoreObjects.toStringHelper(this)
.add("idx", idx)
.add("hashCode", Integer.toHexString(hashCode()))
.toString();
}
public int getPostingAt(int i)
{
return postings[i];
}
}