org.apache.cassandra.db.RangeSliceReply.java Source code

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Here is the source code for org.apache.cassandra.db.RangeSliceReply.java

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/**
 * 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.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.apache.commons.lang.StringUtils;

import org.apache.cassandra.io.util.DataOutputBuffer;
import org.apache.cassandra.net.Message;
import org.apache.cassandra.utils.FBUtilities;

public class RangeSliceReply {
    public final List<Row> rows;

    public RangeSliceReply(List<Row> rows) {
        this.rows = rows;
    }

    public Message getReply(Message originalMessage) throws IOException {
        DataOutputBuffer dob = new DataOutputBuffer();
        dob.writeInt(rows.size());
        for (Row row : rows) {
            Row.serializer().serialize(row, dob, originalMessage.getVersion());
        }
        byte[] data = Arrays.copyOf(dob.getData(), dob.getLength());
        return originalMessage.getReply(FBUtilities.getLocalAddress(), data, originalMessage.getVersion());
    }

    @Override
    public String toString() {
        return "RangeSliceReply{" + "rows=" + StringUtils.join(rows, ",") + '}';
    }

    public static RangeSliceReply read(byte[] body, int version) throws IOException {
        ByteArrayInputStream bufIn = new ByteArrayInputStream(body);
        DataInputStream dis = new DataInputStream(bufIn);
        int rowCount = dis.readInt();
        List<Row> rows = new ArrayList<Row>(rowCount);
        for (int i = 0; i < rowCount; i++) {
            rows.add(Row.serializer().deserialize(dis, version));
        }
        return new RangeSliceReply(rows);
    }
}