Examples of IndexExpression

com.google.dart.engine.ast.IndexExpression
Instances of the class {@code IndexExpression} represent an index expression.
```
 indexExpression ::= {@link Expression target} '[' {@link Expression index} ']'
```
@coverage dart.engine.ast
org.apache.cassandra.db.IndexExpression
org.apache.cassandra.thrift.IndexExpression
org.apache.hadoop.hbase.index.client.IndexExpression
While scan the index(s) to be used can be explicitly passed from client application. Objects of IndexExpression can specify the index(s) details. @see SingleIndexExpression @see MultiIndexExpression @see NoIndexExpression @see Scan#setAttribute(String,byte[]) @see Constants#INDEX_EXPRESSION @see IndexUtils#toBytes(IndexExpression)

Examples of org.apache.cassandra.thrift.IndexExpression

    public ColumnFamilyStore.AbstractScanIterator getIndexedIterator(final AbstractBounds<RowPosition> range, final ExtendedFilter filter)
    {
        // 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
        final IndexExpression primary = highestSelectivityPredicate(filter.getClause());
        final SecondaryIndex index = indexManager.getIndexForColumn(primary.column_name);
        if (logger.isDebugEnabled())
            logger.debug("Primary scan clause is " + baseCfs.getComparator().getString(primary.column_name));
        assert index != null;
        final DecoratedKey indexKey = indexManager.getIndexKeyFor(primary.column_name, primary.value);

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Examples of org.apache.cassandra.thrift.IndexExpression

        {
            int filterCount = dis.readInt();
            rowFilter = new ArrayList<IndexExpression>(filterCount);
            for (int i = 0; i < filterCount; i++)
            {
                IndexExpression expr = new IndexExpression();
                FBUtilities.deserialize(dser, expr, dis);
                rowFilter.add(expr);
            }
        }
        AbstractBounds<RowPosition> range = AbstractBounds.serializer().deserialize(dis, version).toRowBounds();

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Examples of org.apache.cassandra.thrift.IndexExpression

        // make sure all sstables including 2ary indexes load from disk
        for (ColumnFamilyStore cfs : indexedCFS.concatWithIndexes())
            clearAndLoad(cfs);


        // query using index to see if sstable for secondary index opens
        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexOperator.EQ, ByteBufferUtil.bytes(1L));
        List<IndexExpression> clause = Arrays.asList(expr);
        IPartitioner p = StorageService.getPartitioner();
        Range<RowPosition> range = Util.range("", "");
        List<Row> rows = indexedCFS.search(clause, range, 100, new IdentityQueryFilter());
        assert rows.size() == 1;

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Examples of org.apache.cassandra.thrift.IndexExpression

        // make sure all sstables including 2ary indexes load from disk
        for (ColumnFamilyStore cfs : indexedCFS.concatWithIndexes())
            clearAndLoad(cfs);


        // query using index to see if sstable for secondary index opens
        IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"), IndexOperator.EQ, ByteBufferUtil.bytes(1L));
        List<IndexExpression> clause = Arrays.asList(expr);
        IPartitioner p = StorageService.getPartitioner();
        Range<RowPosition> range = Util.range("", "");
        List<Row> rows = indexedCFS.search(clause, range, 100, new IdentityQueryFilter());
        assert rows.size() == 1;

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Examples of org.apache.cassandra.thrift.IndexExpression

        // confirm that the secondary index was recovered
        for (String key : keys)
        {
            long val = key.hashCode();
            IPartitioner p = StorageService.getPartitioner();
            IndexExpression expr = new IndexExpression(ByteBufferUtil.bytes("birthdate"),
                                                       IndexOperator.EQ,
                                                       ByteBufferUtil.bytes(val));
            List<IndexExpression> clause = Arrays.asList(expr);
            IDiskAtomFilter filter = new IdentityQueryFilter();
            Range<RowPosition> range = Util.range("", "");

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Examples of org.apache.cassandra.thrift.IndexExpression

        {
            // Left and right side of relational expression encoded according to comparator/validator.
            ByteBuffer entity = columnRelation.getEntity().getByteBuffer(metadata.comparator, variables);
            ByteBuffer value = columnRelation.getValue().getByteBuffer(select.getValueValidator(metadata.ksName, entity), variables);


            expressions.add(new IndexExpression(entity,
                                                IndexOperator.valueOf(columnRelation.operator().toString()),
                                                value));
        }


        int limit = select.isKeyRange() && select.getKeyStart() != null

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Examples of org.apache.cassandra.thrift.IndexExpression

                for (Term t : restriction.eqValues)
                {
                    ByteBuffer value = t.getByteBuffer(name.type, variables);
                    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).getByteBuffer(name.type, variables);
                        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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Examples of org.apache.cassandra.thrift.IndexExpression

                    ByteBuffer value = t.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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Examples of org.apache.cassandra.thrift.IndexExpression

            if (restriction.isEquality())
            {
                for (Term t : restriction.eqValues)
                {
                    ByteBuffer value = t.getByteBuffer(name.type, variables);
                    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).getByteBuffer(name.type, variables);
                        expressions.add(new IndexExpression(name.name.key, restriction.getIndexOperator(b), value));
                    }
                }
            }
        }
        return expressions;

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Examples of org.apache.cassandra.thrift.IndexExpression

            if (restriction.isEquality())
            {
                for (Term t : restriction.eqValues)
                {
                    ByteBuffer value = t.getByteBuffer(name.type, variables);
                    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).getByteBuffer(name.type, variables);
                        expressions.add(new IndexExpression(name.name.key, restriction.getIndexOperator(b), value));
                    }
                }
            }
        }
        return expressions;

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