Package org.apache.cassandra.db.columniterator

Examples of org.apache.cassandra.db.columniterator.OnDiskAtomIterator

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     *  The returned column family won't be thread safe.
     */
    ColumnFamily filterColumnFamily(ColumnFamily cached, QueryFilter filter, int gcBefore)
    {
        ColumnFamily cf = cached.cloneMeShallow(ArrayBackedSortedColumns.factory(), filter.filter.isReversed());
        OnDiskAtomIterator ci = filter.getMemtableColumnIterator(cached, null);
        filter.collateOnDiskAtom(cf, Collections.singletonList(ci), gcBefore);
        // TODO this is necessary because when we collate supercolumns together, we don't check
        // their subcolumns for relevance, so we need to do a second prune post facto here.
        return cf.isSuper() ? removeDeleted(cf, gcBefore) : removeDeletedCF(cf, gcBefore);
    }
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     *  The returned column family won't be thread safe.
     */
    ColumnFamily filterColumnFamily(ColumnFamily cached, QueryFilter filter)
    {
        ColumnFamily cf = cached.cloneMeShallow(ArrayBackedSortedColumns.factory, filter.filter.isReversed());
        OnDiskAtomIterator ci = filter.getColumnFamilyIterator(cached);

        int gcBefore = gcBefore(filter.timestamp);
        filter.collateOnDiskAtom(cf, ci, gcBefore);
        return removeDeletedCF(cf, gcBefore);
    }
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        CompactionManager.instance.performMaximal(cfs);
        assertEquals(1, cfs.getSSTables().size());

        // test the physical structure of the sstable i.e. rt & columns on disk
        SSTableReader sstable = cfs.getSSTables().iterator().next();
        OnDiskAtomIterator iter = sstable.getScanner().next();
        int cnt = 0;
        // after compaction, the first element should be an RT followed by the remaining non-deleted columns
        while(iter.hasNext())
        {
            OnDiskAtom atom = iter.next();
            if (cnt == 0)
                assertTrue(atom instanceof RangeTombstone);
            if (cnt > 0)
                assertTrue(atom instanceof Cell);
            cnt++;
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        new SSTableImport(true).importJson(jsonUrl, "Keyspace1", "Standard1", tempSS.getPath());

        // Verify results
        SSTableReader reader = SSTableReader.open(Descriptor.fromFilename(tempSS.getPath()));
        QueryFilter qf = QueryFilter.getIdentityFilter(Util.dk("rowA"), "Standard1", System.currentTimeMillis());
        OnDiskAtomIterator iter = qf.getSSTableColumnIterator(reader);
        ColumnFamily cf = cloneForAdditions(iter);
        while (iter.hasNext()) cf.addAtom(iter.next());
        assert cf.getColumn(Util.cellname("colAA")).value().equals(hexToBytes("76616c4141"));
        assert !(cf.getColumn(Util.cellname("colAA")) instanceof BufferDeletedCell);
        Cell expCol = cf.getColumn(Util.cellname("colAC"));
        assert expCol.value().equals(hexToBytes("76616c4143"));
        assert expCol instanceof ExpiringCell;
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        new SSTableImport().importJson(jsonUrl, "Keyspace1", "Standard1", tempSS.getPath());

        SSTableReader reader = SSTableReader.open(Descriptor.fromFilename(tempSS.getPath()));
        QueryFilter qf = QueryFilter.getIdentityFilter(Util.dk("rowA"), "Standard1", System.currentTimeMillis());
        OnDiskAtomIterator iter = qf.getSSTableColumnIterator(reader);
        ColumnFamily cf = cloneForAdditions(iter);
        while (iter.hasNext())
            cf.addAtom(iter.next());
        assert cf.getColumn(Util.cellname("colAA")).value().equals(hexToBytes("76616c4141"));
        assert !(cf.getColumn(Util.cellname("colAA")) instanceof BufferDeletedCell);
        Cell expCol = cf.getColumn(Util.cellname("colAC"));
        assert expCol.value().equals(hexToBytes("76616c4143"));
        assert expCol instanceof ExpiringCell;
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        new SSTableImport(true).importJson(jsonUrl, "Keyspace1", "Standard1", tempSS.getPath());

        // Verify results
        SSTableReader reader = SSTableReader.open(Descriptor.fromFilename(tempSS.getPath()));
        QueryFilter qf = QueryFilter.getIdentityFilter(Util.dk("rowA"), "Standard1", System.currentTimeMillis());
        OnDiskAtomIterator iter = qf.getSSTableColumnIterator(reader);
        ColumnFamily cf = cloneForAdditions(iter);
        assertEquals(cf.deletionInfo(), new DeletionInfo(0, 0));
        while (iter.hasNext())
            cf.addAtom(iter.next());
        assert cf.getColumn(Util.cellname("colAA")).value().equals(hexToBytes("76616c4141"));
        assert !(cf.getColumn(Util.cellname("colAA")) instanceof BufferDeletedCell);
        Cell expCol = cf.getColumn(Util.cellname("colAC"));
        assert expCol.value().equals(hexToBytes("76616c4143"));
        assert expCol instanceof ExpiringCell;
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        new SSTableImport(true).importJson(jsonUrl, "Keyspace1", "Counter1", tempSS.getPath());

        // Verify results
        SSTableReader reader = SSTableReader.open(Descriptor.fromFilename(tempSS.getPath()));
        QueryFilter qf = QueryFilter.getIdentityFilter(Util.dk("rowA"), "Counter1", System.currentTimeMillis());
        OnDiskAtomIterator iter = qf.getSSTableColumnIterator(reader);
        ColumnFamily cf = cloneForAdditions(iter);
        while (iter.hasNext()) cf.addAtom(iter.next());
        Cell c = cf.getColumn(Util.cellname("colAA"));
        assert c instanceof CounterCell : c;
        assert ((CounterCell) c).total() == 42;
    }
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    public OnDiskAtomIterator getColumnIterator(final DecoratedKey key, final ColumnFamily cf)
    {
        assert cf != null;
        final Iterator<Cell> iter = getColumnIterator(cf);

        return new OnDiskAtomIterator()
        {
            public ColumnFamily getColumnFamily()
            {
                return cf;
            }
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     *  The returned column family won't be thread safe.
     */
    ColumnFamily filterColumnFamily(ColumnFamily cached, QueryFilter filter, int gcBefore)
    {
        ColumnFamily cf = cached.cloneMeShallow(ArrayBackedSortedColumns.factory(), filter.filter.isReversed());
        OnDiskAtomIterator ci = filter.getMemtableColumnIterator(cached, null);
        filter.collateOnDiskAtom(cf, Collections.singletonList(ci), gcBefore);
        // TODO this is necessary because when we collate supercolumns together, we don't check
        // their subcolumns for relevance, so we need to do a second prune post facto here.
        return cf.isSuper() ? removeDeleted(cf, gcBefore) : removeDeletedCF(cf, gcBefore);
    }
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     *  The returned column family won't be thread safe.
     */
    ColumnFamily filterColumnFamily(ColumnFamily cached, QueryFilter filter, int gcBefore)
    {
        ColumnFamily cf = cached.cloneMeShallow(ArrayBackedSortedColumns.factory(), filter.filter.isReversed());
        OnDiskAtomIterator ci = filter.getMemtableColumnIterator(cached, null);
        filter.collateOnDiskAtom(cf, Collections.singletonList(ci), gcBefore);
        // TODO this is necessary because when we collate supercolumns together, we don't check
        // their subcolumns for relevance, so we need to do a second prune post facto here.
        return cf.isSuper() ? removeDeleted(cf, gcBefore) : removeDeletedCF(cf, gcBefore);
    }
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Related Classes of org.apache.cassandra.db.columniterator.OnDiskAtomIterator

  • org.apache.cassandra.db.CollationController
  • org.apache.cassandra.db.ColumnFamilyStore
  • org.apache.cassandra.db.compaction.CompactionsTest
  • org.apache.cassandra.db.compaction.TTLExpiryTest
  • org.apache.cassandra.db.filter.ExtendedFilter$FilterWithClauses
  • org.apache.cassandra.db.filter.ExtendedFilter$WithClauses
  • org.apache.cassandra.db.filter.SliceQueryFilter
  • org.apache.cassandra.db.RangeTombstoneTest
  • org.apache.cassandra.io.sstable.LegacySSTableTest
  • org.apache.cassandra.io.sstable.SSTableUtils
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