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

        return rows;
    }


    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

    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.hadoop.hbase.index.client.IndexExpression

    // TODO add assertions
  }


  @Test
  public void testNoIndexExpression() throws Exception {
    IndexExpression exp = new NoIndexExpression();
    Scan scan = new Scan();
    scan.setAttribute(Constants.INDEX_EXPRESSION, IndexUtils.toBytes(exp));
    byte[] value1 = Bytes.toBytes("asdf");
    scan.setFilter(new SingleColumnValueFilter(FAMILY1, QUALIFIER1, CompareOp.EQUAL, value1));
    List<IndexSpecification> indices = new ArrayList<IndexSpecification>();

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