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

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Here is the source code for org.apache.cassandra.db.ReadMessageTest.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,
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* specific language governing permissions and limitations
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*/
package org.apache.cassandra.db;

import static org.junit.Assert.*;

import java.io.ByteArrayInputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;

import org.apache.cassandra.SchemaLoader;
import org.apache.commons.lang.ArrayUtils;
import org.junit.Test;

import org.apache.cassandra.db.filter.QueryPath;
import org.apache.cassandra.io.util.DataOutputBuffer;

import org.apache.cassandra.Util;

public class ReadMessageTest extends SchemaLoader {
    @Test
    public void testMakeReadMessage() throws IOException {
        ArrayList<byte[]> colList = new ArrayList<byte[]>();
        colList.add("col1".getBytes());
        colList.add("col2".getBytes());

        ReadCommand rm, rm2;
        DecoratedKey dk = Util.dk("row1");

        rm = new SliceByNamesReadCommand("Keyspace1", dk.key, new QueryPath("Standard1"), colList);
        rm2 = serializeAndDeserializeReadMessage(rm);
        assert rm2.toString().equals(rm.toString());

        rm = new SliceFromReadCommand("Keyspace1", dk.key, new QueryPath("Standard1"), ArrayUtils.EMPTY_BYTE_ARRAY,
                ArrayUtils.EMPTY_BYTE_ARRAY, true, 2);
        rm2 = serializeAndDeserializeReadMessage(rm);
        assert rm2.toString().equals(rm.toString());

        rm = new SliceFromReadCommand("Keyspace1", dk.key, new QueryPath("Standard1"), "a".getBytes(),
                "z".getBytes(), true, 5);
        rm2 = serializeAndDeserializeReadMessage(rm);
        assertEquals(rm2.toString(), rm.toString());

        rm = new SliceFromReadCommand("Keyspace1", dk.key, new QueryPath("Standard1"), ArrayUtils.EMPTY_BYTE_ARRAY,
                ArrayUtils.EMPTY_BYTE_ARRAY, true, 2);
        rm2 = serializeAndDeserializeReadMessage(rm);
        assert rm2.toString().equals(rm.toString());

        rm = new SliceFromReadCommand("Keyspace1", dk.key, new QueryPath("Standard1"), "a".getBytes(),
                "z".getBytes(), true, 5);
        rm2 = serializeAndDeserializeReadMessage(rm);
        assertEquals(rm2.toString(), rm.toString());
    }

    private ReadCommand serializeAndDeserializeReadMessage(ReadCommand rm) throws IOException {
        ReadCommandSerializer rms = ReadCommand.serializer();
        DataOutputBuffer dos = new DataOutputBuffer();
        ByteArrayInputStream bis;

        rms.serialize(rm, dos);
        bis = new ByteArrayInputStream(dos.getData(), 0, dos.getLength());
        return rms.deserialize(new DataInputStream(bis));
    }

    @Test
    public void testGetColumn() throws IOException, ColumnFamilyNotDefinedException {
        Table table = Table.open("Keyspace1");
        RowMutation rm;
        DecoratedKey dk = Util.dk("key1");

        // add data
        rm = new RowMutation("Keyspace1", dk.key);
        rm.add(new QueryPath("Standard1", null, "Column1".getBytes()), "abcd".getBytes(), new TimestampClock(0));
        rm.apply();

        ReadCommand command = new SliceByNamesReadCommand("Keyspace1", dk.key, new QueryPath("Standard1"),
                Arrays.asList("Column1".getBytes()));
        Row row = command.getRow(table);
        IColumn col = row.cf.getColumn("Column1".getBytes());
        assert Arrays.equals(col.value(), "abcd".getBytes());
    }
}