Package org.apache.cassandra.db

Examples of org.apache.cassandra.db.RowIndexEntry$Serializer

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    }

    @Test
    public void testKeyCacheValue()
    {
        RowIndexEntry entry = new RowIndexEntry(123);
        long size = entry.memorySize();
        long size2 = meter.measureDeep(entry);
        Assert.assertEquals(size, size2);
    }
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    }

    @Test
    public void testKeyCacheValueWithDelInfo()
    {
        RowIndexEntry entry = RowIndexEntry.create(123, new DeletionTime(123, 123), ColumnIndex.nothing());
        long size = entry.memorySize();
        long size2 = meter.measureDeep(entry);
        Assert.assertEquals(size, size2);
    }
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    private final DecoratedKey key;

    public SSTableSliceIterator(SSTableReader sstable, DecoratedKey key, ColumnSlice[] slices, boolean reversed)
    {
        this.key = key;
        RowIndexEntry indexEntry = sstable.getPosition(key, SSTableReader.Operator.EQ);
        this.reader = indexEntry == null ? null : createReader(sstable, indexEntry, null, slices, reversed);
    }
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    public class KeyCacheSerializer implements CacheSerializer<KeyCacheKey, RowIndexEntry>
    {
        public void serialize(KeyCacheKey key, DataOutput out) throws IOException
        {
            RowIndexEntry entry = CacheService.instance.keyCache.get(key);
            if (entry == null)
                return;
            ByteBufferUtil.writeWithLength(key.key, out);
            Descriptor desc = key.desc;
            out.writeInt(desc.generation);
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            if (reader == null)
            {
                RowIndexEntry.serializer.skipPromotedIndex(input);
                return null;
            }
            RowIndexEntry entry = RowIndexEntry.serializer.deserialize(input, reader.descriptor.version);
            return Futures.immediateFuture(Pair.create(new KeyCacheKey(reader.descriptor, key), entry));
        }
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     * @return null if the row was compacted away entirely; otherwise, the PK index entry for this row
     */
    public RowIndexEntry append(AbstractCompactedRow row)
    {
        long currentPosition = beforeAppend(row.key);
        RowIndexEntry entry;
        try
        {
            entry = row.write(currentPosition, dataFile.stream);
            if (entry == null)
                return null;
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    public void append(DecoratedKey decoratedKey, ColumnFamily cf)
    {
        long startPosition = beforeAppend(decoratedKey);
        try
        {
            RowIndexEntry entry = rawAppend(cf, startPosition, decoratedKey, dataFile.stream);
            afterAppend(decoratedKey, startPosition, entry);
        }
        catch (IOException e)
        {
            throw new FSWriteError(e, dataFile.getPath());
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        if (inclusiveUpperBoundOfReadableData == null)
            return null;
        int offset = 2;
        while (true)
        {
            RowIndexEntry indexEntry = sstable.getPosition(inclusiveUpperBoundOfReadableData, SSTableReader.Operator.GT);
            if (indexEntry != null && indexEntry.position <= dataFile.getLastFlushOffset())
                break;
            inclusiveUpperBoundOfReadableData = iwriter.getMaxReadableKey(offset++);
            if (inclusiveUpperBoundOfReadableData == null)
                return null;
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            long indexPosition;
            while ((indexPosition = primaryIndex.getFilePointer()) != indexSize)
            {
                ByteBuffer key = ByteBufferUtil.readWithShortLength(primaryIndex);
                RowIndexEntry indexEntry = metadata.comparator.rowIndexEntrySerializer().deserialize(primaryIndex, descriptor.version);
                DecoratedKey decoratedKey = partitioner.decorateKey(key);
                if (first == null)
                    first = decoratedKey;
                last = decoratedKey;
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        // use the index to determine a minimal section for each range
        List<Pair<Long,Long>> positions = new ArrayList<>();
        for (Range<Token> range : Range.normalize(ranges))
        {
            AbstractBounds<RowPosition> keyRange = range.toRowBounds();
            RowIndexEntry idxLeft = getPosition(keyRange.left, Operator.GT);
            long left = idxLeft == null ? -1 : idxLeft.position;
            if (left == -1)
                // left is past the end of the file
                continue;
            RowIndexEntry idxRight = getPosition(keyRange.right, Operator.GT);
            long right = idxRight == null ? -1 : idxRight.position;
            if (right == -1 || Range.isWrapAround(range.left, range.right))
                // right is past the end of the file, or it wraps
                right = uncompressedLength();
            if (left == right)
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