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 com.google.dart.engine.ast.IndexExpression

        properties.add(property);
      }


      private SimpleStringLiteral getNameNode(Expression node) {
        if (node instanceof IndexExpression) {
          IndexExpression indexExpression = (IndexExpression) node;
          Expression target = indexExpression.getTarget();
          Expression index = indexExpression.getIndex();
          if (index instanceof SimpleStringLiteral && isContext(target)) {
            return (SimpleStringLiteral) index;
          }
        }
        return null;

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Examples of org.apache.cassandra.db.IndexExpression


    @Override
    public List<Row> search(ExtendedFilter filter)
    {
        assert filter.getClause() != null && !filter.getClause().isEmpty();
        final IndexExpression primary = highestSelectivityPredicate(filter.getClause());
        final CompositesIndex index = (CompositesIndex)indexManager.getIndexForColumn(primary.column);
        // TODO: this should perhaps not open and maintain a writeOp for the full duration, but instead only *try* to delete stale entries, without blocking if there's no room
        // as it stands, we open a writeOp and keep it open for the duration to ensure that should this CF get flushed to make room we don't block the reclamation of any room being made
        try (OpOrder.Group writeOp = baseCfs.keyspace.writeOrder.start(); OpOrder.Group baseOp = baseCfs.readOrdering.start(); OpOrder.Group indexOp = index.getIndexCfs().readOrdering.start())
        {

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Examples of org.apache.cassandra.thrift.IndexExpression

    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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Examples of org.apache.cassandra.thrift.IndexExpression

                             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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Examples of org.apache.cassandra.thrift.IndexExpression


        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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Examples of org.apache.cassandra.thrift.IndexExpression

        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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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);
            IFilter filter = new IdentityQueryFilter();
            Range<RowPosition> range = Util.range("", "");

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Examples of org.apache.cassandra.thrift.IndexExpression

        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);
        IFilter 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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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())
                {
                    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

        super(indexManager, columns);
    }
    
    private IndexExpression highestSelectivityPredicate(List<IndexExpression> clause)
    {
        IndexExpression best = null;
        int bestMeanCount = Integer.MAX_VALUE;
        for (IndexExpression expression : clause)
        {
            //skip columns belonging to a different index type
            if(!columns.contains(expression.column_name))

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