Package org.apache.cassandra.db.filter

Examples of org.apache.cassandra.db.filter.QueryFilter

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                // roughtly
                IFilter extraFilter = filter.getExtraFilter(data);
                if (extraFilter != null)
                {
                    QueryPath path = new QueryPath(columnFamily);
                    ColumnFamily cf = filter.cfs.getColumnFamily(new QueryFilter(rawRow.key, path, extraFilter));
                    if (cf != null)
                        data.addAll(cf, HeapAllocator.instance);
                }

                if (!filter.isSatisfiedBy(data))
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                if (cached == null)
                    // not cached: collate
                    filter.collateColumns(returnCF, colIters, gcBefore);
                else
                {
                    QueryFilter keyFilter = new QueryFilter(key, filter.path, filter.filter);
                    returnCF = cfs.filterColumnFamily(cached, keyFilter, gcBefore);
                }

                Row rv = new Row(key, returnCF);
                colIters.clear();
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            }

            // avoid changing the filter columns of the original filter
            // (reduceNameFilter removes columns that are known to be irrelevant)
            TreeSet<ByteBuffer> filterColumns = new TreeSet<ByteBuffer>(((NamesQueryFilter) filter.filter).columns);
            QueryFilter reducedFilter = new QueryFilter(filter.key, filter.path, new NamesQueryFilter(filterColumns));

            /* add the SSTables on disk */
            Collections.sort(view.sstables, SSTable.maxTimestampComparator);

            // read sorted sstables
            for (SSTableReader sstable : view.sstables)
            {
                long currentMaxTs = sstable.getMaxTimestamp();
                reduceNameFilter(reducedFilter, container, currentMaxTs);
                if (((NamesQueryFilter) reducedFilter.filter).columns.isEmpty())
                    break;

                IColumnIterator iter = reducedFilter.getSSTableColumnIterator(sstable);
                iterators.add(iter);
                if (iter.getColumnFamily() != null)
                {
                    container.delete(iter.getColumnFamily());
                    sstablesIterated++;
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    public static UUID getLastMigrationId()
    {
        DecoratedKey<?> dkey = StorageService.getPartitioner().decorateKey(LAST_MIGRATION_KEY);
        Table defs = Table.open(Table.SYSTEM_TABLE);
        ColumnFamilyStore cfStore = defs.getColumnFamilyStore(SCHEMA_CF);
        QueryFilter filter = QueryFilter.getNamesFilter(dkey, new QueryPath(SCHEMA_CF), LAST_MIGRATION_KEY);
        ColumnFamily cf = cfStore.getColumnFamily(filter);
        if (cf == null || cf.getColumnNames().size() == 0)
            return null;
        else
            return UUIDGen.getUUID(cf.getColumn(LAST_MIGRATION_KEY).value());
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        }

        delivery:
        while (true)
        {
            QueryFilter filter = QueryFilter.getSliceFilter(epkey, new QueryPath(HINTS_CF), startColumn, ByteBufferUtil.EMPTY_BYTE_BUFFER, false, pageSize);
            ColumnFamily hintsPage = ColumnFamilyStore.removeDeleted(hintStore.getColumnFamily(filter), Integer.MAX_VALUE);
            if (pagingFinished(hintsPage, startColumn))
                break;

            page:
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               : range;

        DecoratedKey startWith = new DecoratedKey(range.left, null);
        DecoratedKey stopAt = new DecoratedKey(range.right, null);

        QueryFilter filter = new QueryFilter(null, new QueryPath(columnFamily, superColumn, null), columnFilter);
        int gcBefore = (int)(System.currentTimeMillis() / 1000) - metadata.getGcGraceSeconds();

        List<Row> rows;
        ViewFragment view = markReferenced(startWith, stopAt);
        try
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    /** if hints become incompatible across versions of cassandra, that logic (and associated purging) is managed here. */
    private static void purgeIncompatibleHints() throws IOException
    {
        ByteBuffer upgradeMarker = ByteBufferUtil.bytes("Pre-1.0 hints purged");
        Table table = Table.open(Table.SYSTEM_TABLE);
        QueryFilter filter = QueryFilter.getNamesFilter(decorate(COOKIE_KEY), new QueryPath(STATUS_CF), upgradeMarker);
        ColumnFamily cf = table.getColumnFamilyStore(STATUS_CF).getColumnFamily(filter);
        if (cf != null)
        {
            logger.debug("Pre-1.0 hints already purged");
            return;
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    public static HashMap<Token, InetAddress> loadTokens()
    {
        HashMap<Token, InetAddress> tokenMap = new HashMap<Token, InetAddress>();
        IPartitioner p = StorageService.getPartitioner();
        Table table = Table.open(Table.SYSTEM_TABLE);
        QueryFilter filter = QueryFilter.getIdentityFilter(decorate(RING_KEY), new QueryPath(STATUS_CF));
        ColumnFamily cf = table.getColumnFamilyStore(STATUS_CF).getColumnFamily(filter);
        if (cf != null)
        {
            for (IColumn column : cf.getSortedColumns())
            {
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            throw ex;
        }
       
        SortedSet<ByteBuffer> cols = new TreeSet<ByteBuffer>(BytesType.instance);
        cols.add(CLUSTERNAME);
        QueryFilter filter = QueryFilter.getNamesFilter(decorate(LOCATION_KEY), new QueryPath(STATUS_CF), cols);
        ColumnFamily cf = table.getColumnFamilyStore(STATUS_CF).getColumnFamily(filter);
       
        if (cf == null)
        {
            // this is a brand new node
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    }

    public static Token getSavedToken()
    {
        Table table = Table.open(Table.SYSTEM_TABLE);
        QueryFilter filter = QueryFilter.getNamesFilter(decorate(LOCATION_KEY), new QueryPath(STATUS_CF), TOKEN);
        ColumnFamily cf = table.getColumnFamilyStore(STATUS_CF).getColumnFamily(filter);
        return cf == null ? null : StorageService.getPartitioner().getTokenFactory().fromByteArray(cf.getColumn(TOKEN).value());
    }
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Related Classes of org.apache.cassandra.db.filter.QueryFilter

  • com.stratio.cassandra.index.RowServiceSkinny
  • com.stratio.cassandra.index.RowServiceWide
  • org.apache.cassandra.db.BatchlogManager
  • org.apache.cassandra.db.Cell
  • org.apache.cassandra.db.CollationController
  • org.apache.cassandra.db.CollationControllerTest
  • org.apache.cassandra.db.ColumnFamily
  • org.apache.cassandra.db.ColumnFamilyStore
  • org.apache.cassandra.db.ColumnFamilyStoreTest
  • org.apache.cassandra.db.columniterator.IdentityQueryFilter
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