Package org.apache.cassandra.thrift

Examples of org.apache.cassandra.thrift.IndexExpression

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    public List<Row> scan(IndexClause clause, AbstractBounds range, IFilter dataFilter)
    {
        // Start with the most-restrictive indexed clause, then apply remaining clauses
        // to each row matching that clause.
        // TODO: allow merge join instead of just one index + loop
        IndexExpression primary = highestSelectivityPredicate(clause);
        ColumnFamilyStore indexCFS = getIndexedColumnFamilyStore(primary.column_name);
        if (logger.isDebugEnabled())
            logger.debug("Primary scan clause is " + getComparator().getString(primary.column_name));
        assert indexCFS != null;
        DecoratedKey indexKey = indexCFS.partitioner.decorateKey(primary.value);
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                             metadata.getColumn_metadata().get(expr.column_name).getValidator().getString(expr.value));
    }

    private IndexExpression highestSelectivityPredicate(IndexClause clause)
    {
        IndexExpression best = null;
        int bestMeanCount = Integer.MAX_VALUE;
        for (IndexExpression expression : clause.expressions)
        {
            ColumnFamilyStore cfs = getIndexedColumnFamilyStore(expression.column_name);
            if (cfs == null || !expression.op.equals(IndexOperator.EQ))
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        long start = System.currentTimeMillis();
        while (!index.isIndexBuilt(COLUMN) && System.currentTimeMillis() < start + 10000)
            Thread.sleep(10);

        // verify we get it back w/ index query too
        IndexExpression expr = new IndexExpression(COLUMN, IndexOperator.EQ, VALUE);
        List<IndexExpression> clause = Arrays.asList(expr);
        IDiskAtomFilter filter = new IdentityQueryFilter();
        IPartitioner p = StorageService.getPartitioner();
        Range<RowPosition> range = Util.range("", "");
        rows = table.getColumnFamilyStore(CF1).search(clause, range, Integer.MAX_VALUE, filter);
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                ByteBuffer value = restriction.eqValues.get(0).bindAndGet(variables);
                if (value == null)
                    throw new InvalidRequestException(String.format("Unsupported null value for indexed column %s", name));
                if (value.remaining() > 0xFFFF)
                    throw new InvalidRequestException("Index expression values may not be larger than 64K");
                expressions.add(new IndexExpression(name.name.key, IndexOperator.EQ, value));
            }
            else
            {
                for (Bound b : Bound.values())
                {
                    if (restriction.bound(b) != null)
                    {
                        ByteBuffer value = restriction.bound(b).bindAndGet(variables);
                        if (value == null)
                            throw new InvalidRequestException(String.format("Unsupported null value for indexed column %s", name));
                        if (value.remaining() > 0xFFFF)
                            throw new InvalidRequestException("Index expression values may not be larger than 64K");
                        expressions.add(new IndexExpression(name.name.key, restriction.getIndexOperator(b), value));
                    }
                }
            }
        }
        return expressions;
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        // and that the index and filter were properly recovered
        assert null != cfs.getColumnFamily(QueryFilter.getIdentityFilter(Util.dk("key1"), new QueryPath(cfs.columnFamily)));
        assert null != cfs.getColumnFamily(QueryFilter.getIdentityFilter(Util.dk("key3"), new QueryPath(cfs.columnFamily)));

        // and that the secondary index works
        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexOperator.EQ, ByteBufferUtil.bytes(3L));
        IndexClause clause = new IndexClause(Arrays.asList(expr), ByteBufferUtil.EMPTY_BYTE_BUFFER, 100);
        IFilter filter = new IdentityQueryFilter();
        Range range = new Range(p.getMinimumToken(), p.getMinimumToken());
        rows = cfs.scan(clause, range, filter);
        assertEquals(1, rows.size());
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        ColumnFamilyStore cfi = cfs.getIndexedColumnFamilyStore(COLUMN);
        assertTrue(cfi.isIndexBuilt());

        // verify we get it back w/ index query too
        IndexExpression expr = new IndexExpression(COLUMN, IndexOperator.EQ, VALUE);
        IndexClause clause = new IndexClause(Arrays.asList(expr), ByteBufferUtil.EMPTY_BYTE_BUFFER, Integer.MAX_VALUE);
        IFilter filter = new IdentityQueryFilter();
        IPartitioner p = StorageService.getPartitioner();
        Range range = new Range(p.getMinimumToken(), p.getMinimumToken());
        rows = table.getColumnFamilyStore(CF1).scan(clause, range, filter);
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        assert sstr != null;
        ColumnFamilyStore cfs = Table.open("Keyspace1").getColumnFamilyStore("Indexed1");
        cfs.addSSTable(sstr);
        cfs.buildSecondaryIndexes(cfs.getSSTables(), cfs.getIndexedColumns());
       
        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexOperator.EQ, ByteBufferUtil.bytes(1L));
        IndexClause clause = new IndexClause(Arrays.asList(expr), ByteBufferUtil.EMPTY_BYTE_BUFFER, 100);
        IFilter filter = new IdentityQueryFilter();
        IPartitioner p = StorageService.getPartitioner();
        Range range = new Range(p.getMinimumToken(), p.getMinimumToken());
        List<Row> rows = cfs.scan(clause, range, filter);
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            indexCfs.loadNewSSTables(); // v1.0.4 would fail here (see CASSANDRA-3540)
        }
        indexedCFS.loadNewSSTables();

        // query using index to see if sstable for secondary index opens
        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexOperator.EQ, ByteBufferUtil.bytes(1L));
        IndexClause clause = new IndexClause(Arrays.asList(expr), ByteBufferUtil.EMPTY_BYTE_BUFFER, 100);
        IPartitioner p = StorageService.getPartitioner();
        Range range = new Range(p.getMinimumToken(), p.getMinimumToken());
        List<Row> rows = indexedCFS.search(clause, range, new IdentityQueryFilter());
        assert rows.size() == 1;
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    public List<Row> scan(IndexClause clause, AbstractBounds range, IFilter dataFilter)
    {
        // Start with the most-restrictive indexed clause, then apply remaining clauses
        // to each row matching that clause.
        // TODO: allow merge join instead of just one index + loop
        IndexExpression primary = highestSelectivityPredicate(clause);
        ColumnFamilyStore indexCFS = getIndexedColumnFamilyStore(primary.column_name);
        if (logger.isDebugEnabled())
            logger.debug("Primary scan clause is " + getComparator().getString(primary.column_name));
        assert indexCFS != null;
        DecoratedKey indexKey = indexCFS.partitioner.decorateKey(primary.value);
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                             metadata.getColumn_metadata().get(expr.column_name).getValidator().getString(expr.value));
    }

    private IndexExpression highestSelectivityPredicate(IndexClause clause)
    {
        IndexExpression best = null;
        int bestMeanCount = Integer.MAX_VALUE;
        for (IndexExpression expression : clause.expressions)
        {
            ColumnFamilyStore cfs = getIndexedColumnFamilyStore(expression.column_name);
            if (cfs == null || !expression.op.equals(IndexOperator.EQ))
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Related Classes of org.apache.cassandra.thrift.IndexExpression

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  • org.apache.cassandra.db.CleanupTest
  • org.apache.cassandra.db.ColumnFamilyStore
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