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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,
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* See the License for the specific language governing permissions and
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package org.apache.cassandra.index.sai.utils;
import java.util.Objects;
import javax.annotation.Nullable;
import org.apache.cassandra.db.DecoratedKey;
import org.apache.cassandra.db.DeletionTime;
import org.apache.cassandra.db.rows.BaseRowIterator;
import org.apache.cassandra.db.rows.EncodingStats;
import org.apache.cassandra.db.rows.Row;
import org.apache.cassandra.db.rows.Unfiltered;
import org.apache.cassandra.db.rows.UnfilteredRowIterator;
public class PartitionInfo
{
public final DecoratedKey key;
public final Row staticRow;
// present if it's unfiltered partition iterator
@Nullable
public final DeletionTime partitionDeletion;
// present if it's unfiltered partition iterator
@Nullable
public final EncodingStats encodingStats;
public PartitionInfo(DecoratedKey key, Row staticRow)
{
this.key = key;
this.staticRow = staticRow;
this.partitionDeletion = null;
this.encodingStats = null;
}
public PartitionInfo(DecoratedKey key, Row staticRow, DeletionTime partitionDeletion, EncodingStats encodingStats)
{
this.key = key;
this.staticRow = staticRow;
this.partitionDeletion = partitionDeletion;
this.encodingStats = encodingStats;
}
public static > PartitionInfo create(R baseRowIterator)
{
return baseRowIterator instanceof UnfilteredRowIterator
? new PartitionInfo(baseRowIterator.partitionKey(), baseRowIterator.staticRow(),
((UnfilteredRowIterator) baseRowIterator).partitionLevelDeletion(),
((UnfilteredRowIterator) baseRowIterator).stats())
: new PartitionInfo(baseRowIterator.partitionKey(), baseRowIterator.staticRow());
}
@Override
public boolean equals(Object o)
{
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PartitionInfo that = (PartitionInfo) o;
return Objects.equals(key, that.key) && Objects.equals(staticRow, that.staticRow)
&& Objects.equals(partitionDeletion, that.partitionDeletion) && Objects.equals(encodingStats, that.encodingStats);
}
@Override
public int hashCode()
{
return Objects.hash(key, staticRow, partitionDeletion, encodingStats);
}
}