org.apache.phoenix.execute

Class DegenerateQueryPlan

java.lang.Object

org.apache.phoenix.execute.BaseQueryPlan

org.apache.phoenix.execute.DegenerateQueryPlan

All Implemented Interfaces:

QueryPlan, StatementPlan

public class DegenerateQueryPlan
extends BaseQueryPlan

Field Summary

Fields inherited from class org.apache.phoenix.execute.BaseQueryPlan

context, DEFAULT_ESTIMATED_SIZE, groupBy, limit, orderBy, parallelIteratorFactory, paramMetaData, projection, statement, tableRef

Constructor Summary

Constructors

Constructor and Description
DegenerateQueryPlan(StatementContext context, FilterableStatement statement, TableRef table)

Method Summary

Methods

Modifier and Type	Method and Description
List<List<Scan>>	getScans()
List<KeyRange>	getSplits()
protected ResultIterator	newIterator(ParallelScanGrouper scanGrouper)
boolean	useRoundRobinIterator()

Methods inherited from class org.apache.phoenix.execute.BaseQueryPlan

getContext, getEstimatedSize, getExplainPlan, getGroupBy, getLimit, getOrderBy, getParameterMetaData, getProjector, getStatement, getTableRef, isDegenerate, isRowKeyOrdered, iterator, iterator, iterator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DegenerateQueryPlan

public DegenerateQueryPlan(StatementContext context,
                   FilterableStatement statement,
                   TableRef table)

Method Detail

getSplits

public List<KeyRange> getSplits()

getScans

public List<List<Scan>> getScans()

newIterator

protected ResultIterator newIterator(ParallelScanGrouper scanGrouper)
                              throws SQLException

Specified by:

newIterator in class BaseQueryPlan

Throws:

SQLException

useRoundRobinIterator

public boolean useRoundRobinIterator()

Returns:

whether underlying ResultScanner can be picked up in a round-robin fashion. Generally, selecting scanners in such a fashion is possible if rows don't have to be returned back in a certain order.