org.apache.phoenix.execute

Class ScanPlan

java.lang.Object

org.apache.phoenix.execute.BaseQueryPlan

org.apache.phoenix.execute.ScanPlan

All Implemented Interfaces:

QueryPlan, StatementPlan

public class ScanPlan
extends BaseQueryPlan

Query plan for a basic table scan

Since:

0.1

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
ScanPlan(StatementContext context, FilterableStatement statement, TableRef table, RowProjector projector, Integer limit, OrderByCompiler.OrderBy orderBy, ParallelIteratorFactory parallelIteratorFactory, boolean allowPageFilter)

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

ScanPlan

public ScanPlan(StatementContext context,
        FilterableStatement statement,
        TableRef table,
        RowProjector projector,
        Integer limit,
        OrderByCompiler.OrderBy orderBy,
        ParallelIteratorFactory parallelIteratorFactory,
        boolean allowPageFilter)
         throws SQLException

Throws:

SQLException

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()
                              throws SQLException

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.

Throws:

SQLException