/*
* 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;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.DataInputStream;
import java.util.Arrays;
import org.apache.cassandra.io.ICompactSerializer;
import org.apache.cassandra.io.DataOutputBuffer;
import org.apache.cassandra.io.DataInputBuffer;
import org.apache.cassandra.net.Message;
import org.apache.cassandra.service.StorageService;
public class RangeCommand
{
private static RangeCommandSerializer serializer = new RangeCommandSerializer();
public final String table;
public final String startWith;
public final String stopAt;
public final int maxResults;
public RangeCommand(String table, String startWith, String stopAt, int maxResults)
{
this.table = table;
this.startWith = startWith;
this.stopAt = stopAt;
this.maxResults = maxResults;
}
public Message getMessage() throws IOException
{
DataOutputBuffer dob = new DataOutputBuffer();
serializer.serialize(this, dob);
return new Message(StorageService.getLocalStorageEndPoint(),
StorageService.readStage_,
StorageService.rangeVerbHandler_,
Arrays.copyOf(dob.getData(), dob.getLength()));
}
public static RangeCommand read(Message message) throws IOException
{
byte[] bytes = message.getMessageBody();
DataInputBuffer dib = new DataInputBuffer();
dib.reset(bytes, bytes.length);
return serializer.deserialize(new DataInputStream(dib));
}
public String toString()
{
return "RangeCommand(" +
"table='" + table + '\'' +
", startWith='" + startWith + '\'' +
", stopAt='" + stopAt + '\'' +
", maxResults=" + maxResults +
')';
}
}
class RangeCommandSerializer implements ICompactSerializer<RangeCommand>
{
public void serialize(RangeCommand command, DataOutputStream dos) throws IOException
{
dos.writeUTF(command.table);
dos.writeUTF(command.startWith);
dos.writeUTF(command.stopAt);
dos.writeInt(command.maxResults);
}
public RangeCommand deserialize(DataInputStream dis) throws IOException
{
return new RangeCommand(dis.readUTF(), dis.readUTF(), dis.readUTF(), dis.readInt());
}
}