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

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package org.apache.cassandra.db;

import org.junit.Test;

import org.apache.cassandra.cql3.CQLTester;
import org.apache.cassandra.db.rows.UnfilteredRowIterator;
import org.apache.cassandra.db.partitions.UnfilteredPartitionIterator;
import org.apache.cassandra.Util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;


public class RowIterationTest extends CQLTester
{
    @Test
    public void testRowIteration() throws Throwable
    {
        String tableName = createTable("CREATE TABLE %s (a int, b int, c int, d int, PRIMARY KEY (a, b, c))");
        ColumnFamilyStore cfs = Keyspace.open(KEYSPACE).getColumnFamilyStore(tableName);
        for (int i = 0; i < 10; i++)
            execute("INSERT INTO %s (a, b, c, d) VALUES (?, ?, ?, ?) USING TIMESTAMP ?", i, 0, i, i, (long)i);
        cfs.forceBlockingFlush();
        assertEquals(10, execute("SELECT * FROM %s").size());
    }

    @Test
    public void testRowIterationDeletionTime() throws Throwable
    {
        String tableName = createTable("CREATE TABLE %s (a int PRIMARY KEY, b int)");
        ColumnFamilyStore cfs = Keyspace.open(KEYSPACE).getColumnFamilyStore(tableName);

        execute("INSERT INTO %s (a, b) VALUES (?, ?) USING TIMESTAMP ?", 0, 0, 0L);
        execute("DELETE FROM %s USING TIMESTAMP ? WHERE a = ?", 0L, 0);

        cfs.forceBlockingFlush();

        // Delete row in second sstable with higher timestamp
        execute("INSERT INTO %s (a, b) VALUES (?, ?) USING TIMESTAMP ?", 0, 0, 1L);
        execute("DELETE FROM %s USING TIMESTAMP ? WHERE a = ?", 1L, 0);

        int localDeletionTime = Util.getOnlyPartitionUnfiltered(Util.cmd(cfs).build()).partitionLevelDeletion().localDeletionTime();

        cfs.forceBlockingFlush();

        DeletionTime dt = Util.getOnlyPartitionUnfiltered(Util.cmd(cfs).build()).partitionLevelDeletion();
        assertEquals(1L, dt.markedForDeleteAt());
        assertEquals(localDeletionTime, dt.localDeletionTime());
    }

    @Test
    public void testRowIterationDeletion() throws Throwable
    {
        String tableName = createTable("CREATE TABLE %s (a int PRIMARY KEY, b int)");
        ColumnFamilyStore cfs = Keyspace.open(KEYSPACE).getColumnFamilyStore(tableName);

        // Delete a row in first sstable
        execute("DELETE FROM %s USING TIMESTAMP ? WHERE a = ?", 0L, 0);
        cfs.forceBlockingFlush();

        assertFalse(Util.getOnlyPartitionUnfiltered(Util.cmd(cfs).build()).isEmpty());
    }
}