| /* |
| * 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.marshal; |
| |
| import java.nio.ByteBuffer; |
| |
| import org.apache.cassandra.db.BufferClustering; |
| import org.apache.cassandra.db.BufferClusteringBound; |
| import org.apache.cassandra.db.BufferClusteringBoundary; |
| import org.apache.cassandra.db.Clustering; |
| import org.apache.cassandra.db.ClusteringBound; |
| import org.apache.cassandra.db.ClusteringBoundary; |
| import org.apache.cassandra.db.ClusteringPrefix; |
| import org.apache.cassandra.db.rows.BufferCell; |
| import org.apache.cassandra.db.rows.Cell; |
| import org.apache.cassandra.db.rows.CellPath; |
| import org.apache.cassandra.schema.ColumnMetadata; |
| import org.apache.cassandra.schema.TableMetadata; |
| |
| class ByteBufferObjectFactory implements ValueAccessor.ObjectFactory<ByteBuffer> |
| { |
| /** Empty clustering for tables having no clustering columns. */ |
| private static final Clustering<ByteBuffer> EMPTY_CLUSTERING = new BufferClustering() |
| { |
| @Override |
| public String toString(TableMetadata metadata) |
| { |
| return "EMPTY"; |
| } |
| }; |
| |
| /** The smallest start bound, i.e. the one that starts before any row. */ |
| private static final BufferClusteringBound BOTTOM_BOUND = new BufferClusteringBound(ClusteringPrefix.Kind.INCL_START_BOUND, new ByteBuffer[0]); |
| /** The biggest end bound, i.e. the one that ends after any row. */ |
| private static final BufferClusteringBound TOP_BOUND = new BufferClusteringBound(ClusteringPrefix.Kind.INCL_END_BOUND, new ByteBuffer[0]); |
| |
| static final ValueAccessor.ObjectFactory<ByteBuffer> instance = new ByteBufferObjectFactory(); |
| |
| private ByteBufferObjectFactory() {} |
| |
| public Cell<ByteBuffer> cell(ColumnMetadata column, long timestamp, int ttl, int localDeletionTime, ByteBuffer value, CellPath path) |
| { |
| return new BufferCell(column, timestamp, ttl, localDeletionTime, value, path); |
| } |
| |
| public Clustering<ByteBuffer> clustering(ByteBuffer... values) |
| { |
| return new BufferClustering(values); |
| } |
| |
| public Clustering<ByteBuffer> clustering() |
| { |
| return EMPTY_CLUSTERING; |
| } |
| |
| public ClusteringBound<ByteBuffer> bound(ClusteringPrefix.Kind kind, ByteBuffer... values) |
| { |
| return new BufferClusteringBound(kind, values); |
| } |
| |
| public ClusteringBound<ByteBuffer> bound(ClusteringPrefix.Kind kind) |
| { |
| return kind.isStart() ? BOTTOM_BOUND : TOP_BOUND; |
| } |
| |
| public ClusteringBoundary<ByteBuffer> boundary(ClusteringPrefix.Kind kind, ByteBuffer... values) |
| { |
| return new BufferClusteringBoundary(kind, values); |
| } |
| } |