| /* |
| * 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.composites; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.config.CFMetaData; |
| import org.apache.cassandra.cql3.ColumnIdentifier; |
| import org.apache.cassandra.utils.memory.AbstractAllocator; |
| import org.apache.cassandra.utils.ObjectSizes; |
| |
| public class SimpleSparseCellName extends AbstractComposite implements CellName |
| { |
| private static final long EMPTY_SIZE = ObjectSizes.measure(new SimpleSparseCellName(null)); |
| |
| private final ColumnIdentifier columnName; |
| |
| // Not meant to be used directly, you should use the CellNameType method instead |
| SimpleSparseCellName(ColumnIdentifier columnName) |
| { |
| this.columnName = columnName; |
| } |
| |
| public int size() |
| { |
| return 1; |
| } |
| |
| public ByteBuffer get(int i) |
| { |
| if (i != 0) |
| throw new IndexOutOfBoundsException(); |
| |
| return columnName.bytes; |
| } |
| |
| @Override |
| public Composite withEOC(EOC newEoc) |
| { |
| // EOC makes no sense for not truly composites. |
| return this; |
| } |
| |
| @Override |
| public ByteBuffer toByteBuffer() |
| { |
| return columnName.bytes; |
| } |
| |
| public int clusteringSize() |
| { |
| return 0; |
| } |
| |
| public ColumnIdentifier cql3ColumnName(CFMetaData metadata) |
| { |
| return columnName; |
| } |
| |
| public ByteBuffer collectionElement() |
| { |
| return null; |
| } |
| |
| public boolean isCollectionCell() |
| { |
| return false; |
| } |
| |
| public boolean isSameCQL3RowAs(CellNameType type, CellName other) |
| { |
| return true; |
| } |
| |
| public long unsharedHeapSizeExcludingData() |
| { |
| return EMPTY_SIZE + columnName.unsharedHeapSizeExcludingData(); |
| } |
| |
| public long unsharedHeapSize() |
| { |
| return EMPTY_SIZE + columnName.unsharedHeapSize(); |
| } |
| |
| public CellName copy(CFMetaData cfm, AbstractAllocator allocator) |
| { |
| return new SimpleSparseCellName(columnName.clone(allocator)); |
| } |
| } |