test/unit/org/apache/cassandra/db/RowIterationTest.java

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package org.apache.cassandra.db;

import java.net.InetAddress;
import java.nio.ByteBuffer;
import java.util.Set;
import java.util.HashSet;

import org.apache.cassandra.Util;

import org.junit.BeforeClass;
import org.junit.Test;

import org.apache.cassandra.SchemaLoader;
import org.apache.cassandra.config.KSMetaData;
import org.apache.cassandra.db.composites.*;
import org.apache.cassandra.db.marshal.LongType;
import org.apache.cassandra.exceptions.ConfigurationException;
import org.apache.cassandra.locator.SimpleStrategy;
import org.apache.cassandra.utils.FBUtilities;
import static org.junit.Assert.assertEquals;
import org.apache.cassandra.utils.ByteBufferUtil;


public class RowIterationTest
{
    public static final String KEYSPACE1 = "RowIterationTest";
    public static final InetAddress LOCAL = FBUtilities.getBroadcastAddress();

    @BeforeClass
    public static void defineSchema() throws ConfigurationException
    {
        SchemaLoader.prepareServer();
        SchemaLoader.createKeyspace(KEYSPACE1,
                                    SimpleStrategy.class,
                                    KSMetaData.optsWithRF(1),
                                    SchemaLoader.standardCFMD(KEYSPACE1, "Standard3"),
                                    SchemaLoader.superCFMD(KEYSPACE1, "Super3", LongType.instance));
    }

    @Test
    public void testRowIteration()
    {
        Keyspace keyspace = Keyspace.open(KEYSPACE1);
        ColumnFamilyStore store = keyspace.getColumnFamilyStore("Super3");

        final int ROWS_PER_SSTABLE = 10;
        Set<DecoratedKey> inserted = new HashSet<DecoratedKey>();
        for (int i = 0; i < ROWS_PER_SSTABLE; i++) {
            DecoratedKey key = Util.dk(String.valueOf(i));
            Mutation rm = new Mutation(KEYSPACE1, key.getKey());
            rm.add("Super3", CellNames.compositeDense(ByteBufferUtil.bytes("sc"), ByteBufferUtil.bytes(String.valueOf(i))), ByteBuffer.wrap(new byte[ROWS_PER_SSTABLE * 10 - i * 2]), i);
            rm.applyUnsafe();
            inserted.add(key);
        }
        store.forceBlockingFlush();
        assertEquals(inserted.toString(), inserted.size(), Util.getRangeSlice(store).size());
    }

    @Test
    public void testRowIterationDeletionTime()
    {
        Keyspace keyspace = Keyspace.open(KEYSPACE1);
        String CF_NAME = "Standard3";
        ColumnFamilyStore store = keyspace.getColumnFamilyStore(CF_NAME);
        DecoratedKey key = Util.dk("key");

        // Delete row in first sstable
        Mutation rm = new Mutation(KEYSPACE1, key.getKey());
        rm.delete(CF_NAME, 0);
        rm.add(CF_NAME, Util.cellname("c"), ByteBufferUtil.bytes("values"), 0L);
        rm.applyUnsafe();
        store.forceBlockingFlush();

        // Delete row in second sstable with higher timestamp
        rm = new Mutation(KEYSPACE1, key.getKey());
        rm.delete(CF_NAME, 1);
        rm.add(CF_NAME, Util.cellname("c"), ByteBufferUtil.bytes("values"), 1L);
        DeletionInfo delInfo2 = rm.getColumnFamilies().iterator().next().deletionInfo();
        assert delInfo2.getTopLevelDeletion().markedForDeleteAt == 1L;
        rm.applyUnsafe();
        store.forceBlockingFlush();

        ColumnFamily cf = Util.getRangeSlice(store).get(0).cf;
        assert cf.deletionInfo().equals(delInfo2);
    }

    @Test
    public void testRowIterationDeletion()
    {
        Keyspace keyspace = Keyspace.open(KEYSPACE1);
        String CF_NAME = "Standard3";
        ColumnFamilyStore store = keyspace.getColumnFamilyStore(CF_NAME);
        DecoratedKey key = Util.dk("key");

        // Delete a row in first sstable
        Mutation rm = new Mutation(KEYSPACE1, key.getKey());
        rm.delete(CF_NAME, 0);
        rm.applyUnsafe();
        store.forceBlockingFlush();

        ColumnFamily cf = Util.getRangeSlice(store).get(0).cf;
        assert cf != null;
    }
}