| /* |
| * 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.db.partitions; |
| |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.db.DecoratedKey; |
| import org.apache.cassandra.db.DeletionInfo; |
| import org.apache.cassandra.db.PartitionColumns; |
| import org.apache.cassandra.db.rows.*; |
| |
| public class ImmutableBTreePartition extends AbstractBTreePartition |
| { |
| |
| protected final Holder holder; |
| |
| public ImmutableBTreePartition(CFMetaData metadata, |
| DecoratedKey partitionKey, |
| PartitionColumns columns, |
| Row staticRow, |
| Object[] tree, |
| DeletionInfo deletionInfo, |
| EncodingStats stats) |
| { |
| super(metadata, partitionKey); |
| this.holder = new Holder(columns, tree, deletionInfo, staticRow, stats); |
| } |
| |
| protected ImmutableBTreePartition(CFMetaData metadata, |
| DecoratedKey partitionKey, |
| Holder holder) |
| { |
| super(metadata, partitionKey); |
| this.holder = holder; |
| } |
| |
| /** |
| * Creates an {@code ImmutableBTreePartition} holding all the data of the provided iterator. |
| * |
| * Warning: Note that this method does not close the provided iterator and it is |
| * up to the caller to do so. |
| * |
| * @param iterator the iterator to gather in memory. |
| * @return the created partition. |
| */ |
| public static ImmutableBTreePartition create(UnfilteredRowIterator iterator) |
| { |
| return create(iterator, 16); |
| } |
| |
| /** |
| * Creates an {@code ImmutableBTreePartition} holding all the data of the provided iterator. |
| * |
| * Warning: Note that this method does not close the provided iterator and it is |
| * up to the caller to do so. |
| * |
| * @param iterator the iterator to gather in memory. |
| * @param ordered {@code true} if the iterator will return the rows in order, {@code false} otherwise. |
| * @return the created partition. |
| */ |
| public static ImmutableBTreePartition create(UnfilteredRowIterator iterator, boolean ordered) |
| { |
| return create(iterator, 16, ordered); |
| } |
| |
| /** |
| * Creates an {@code ImmutableBTreePartition} holding all the data of the provided iterator. |
| * |
| * Warning: Note that this method does not close the provided iterator and it is |
| * up to the caller to do so. |
| * |
| * @param iterator the iterator to gather in memory. |
| * @param initialRowCapacity sizing hint (in rows) to use for the created partition. It should ideally |
| * correspond or be a good estimation of the number or rows in {@code iterator}. |
| * @return the created partition. |
| */ |
| public static ImmutableBTreePartition create(UnfilteredRowIterator iterator, int initialRowCapacity) |
| { |
| return create(iterator, initialRowCapacity, true); |
| } |
| |
| /** |
| * Creates an {@code ImmutableBTreePartition} holding all the data of the provided iterator. |
| * |
| * Warning: Note that this method does not close the provided iterator and it is |
| * up to the caller to do so. |
| * |
| * @param iterator the iterator to gather in memory. |
| * @param initialRowCapacity sizing hint (in rows) to use for the created partition. It should ideally |
| * correspond or be a good estimation of the number or rows in {@code iterator}. |
| * @param ordered {@code true} if the iterator will return the rows in order, {@code false} otherwise. |
| * @return the created partition. |
| */ |
| public static ImmutableBTreePartition create(UnfilteredRowIterator iterator, int initialRowCapacity, boolean ordered) |
| { |
| return new ImmutableBTreePartition(iterator.metadata(), iterator.partitionKey(), build(iterator, initialRowCapacity, ordered, null)); |
| } |
| |
| protected Holder holder() |
| { |
| return holder; |
| } |
| |
| protected boolean canHaveShadowedData() |
| { |
| return false; |
| } |
| } |