| /* |
| * 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.internal.composites; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.config.ColumnDefinition; |
| import org.apache.cassandra.db.Clustering; |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| import org.apache.cassandra.db.marshal.AbstractType; |
| import org.apache.cassandra.db.marshal.CollectionType; |
| import org.apache.cassandra.db.marshal.CompositeType; |
| import org.apache.cassandra.db.rows.Cell; |
| import org.apache.cassandra.db.rows.CellPath; |
| import org.apache.cassandra.db.rows.Row; |
| import org.apache.cassandra.schema.IndexMetadata; |
| |
| /** |
| * Index on the element and value of cells participating in a collection. |
| * |
| * The row keys for this index are a composite of the collection element |
| * and value of indexed columns. |
| */ |
| public class CollectionEntryIndex extends CollectionKeyIndexBase |
| { |
| public CollectionEntryIndex(ColumnFamilyStore baseCfs, |
| IndexMetadata indexDef) |
| { |
| super(baseCfs, indexDef); |
| } |
| |
| public ByteBuffer getIndexedValue(ByteBuffer partitionKey, |
| Clustering clustering, |
| CellPath path, ByteBuffer cellValue) |
| { |
| return CompositeType.build(path.get(0), cellValue); |
| } |
| |
| public boolean isStale(Row data, ByteBuffer indexValue, int nowInSec) |
| { |
| ByteBuffer[] components = ((CompositeType)functions.getIndexedValueType(indexedColumn)).split(indexValue); |
| ByteBuffer mapKey = components[0]; |
| ByteBuffer mapValue = components[1]; |
| |
| ColumnDefinition columnDef = indexedColumn; |
| Cell cell = data.getCell(columnDef, CellPath.create(mapKey)); |
| if (cell == null || !cell.isLive(nowInSec)) |
| return true; |
| |
| AbstractType<?> valueComparator = ((CollectionType)columnDef.type).valueComparator(); |
| return valueComparator.compare(mapValue, cell.value()) != 0; |
| } |
| } |