io.prestosql.sql.planner.plan

Class TableScanNode

java.lang.Object

io.prestosql.sql.planner.plan.PlanNode

io.prestosql.sql.planner.plan.TableScanNode

@Immutable
public class TableScanNode
extends PlanNode

Constructor Summary

Constructors

Constructor and Description
TableScanNode(PlanNodeId id, TableHandle table, List<Symbol> outputs, Map<Symbol,ColumnHandle> assignments)
TableScanNode(PlanNodeId id, TableHandle table, List<Symbol> outputs, Map<Symbol,ColumnHandle> assignments, TupleDomain<ColumnHandle> enforcedConstraint)

Method Summary

Modifier and Type	Method and Description
<R,C> R	accept(PlanVisitor<R,C> visitor, C context)
Map<Symbol,ColumnHandle>	getAssignments()
TupleDomain<ColumnHandle>	getEnforcedConstraint() A TupleDomain that represents a predicate that has been successfully pushed into this TableScan node.
List<Symbol>	getOutputSymbols()
List<PlanNode>	getSources()
TableHandle	getTable()
static TableScanNode	newInstance(PlanNodeId id, TableHandle table, List<Symbol> outputs, Map<Symbol,ColumnHandle> assignments)
PlanNode	replaceChildren(List<PlanNode> newChildren)
String	toString()

Methods inherited from class io.prestosql.sql.planner.plan.PlanNode

getId

Methods inherited from class java.lang.Object

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

Constructor Detail

TableScanNode

public TableScanNode(PlanNodeId id,
                     TableHandle table,
                     List<Symbol> outputs,
                     Map<Symbol,ColumnHandle> assignments)

TableScanNode

public TableScanNode(PlanNodeId id,
                     TableHandle table,
                     List<Symbol> outputs,
                     Map<Symbol,ColumnHandle> assignments,
                     TupleDomain<ColumnHandle> enforcedConstraint)

Method Detail

newInstance

public static TableScanNode newInstance(PlanNodeId id,
                                        TableHandle table,
                                        List<Symbol> outputs,
                                        Map<Symbol,ColumnHandle> assignments)

getTable

public TableHandle getTable()

getOutputSymbols

public List<Symbol> getOutputSymbols()

Specified by:

getOutputSymbols in class PlanNode

getAssignments

public Map<Symbol,ColumnHandle> getAssignments()

getEnforcedConstraint

public TupleDomain<ColumnHandle> getEnforcedConstraint()

A TupleDomain that represents a predicate that has been successfully pushed into this TableScan node. In other words, predicates that were removed from filters above the TableScan node because the TableScan node can guarantee it.

This field is used to make sure that predicates which were previously pushed down do not get lost in subsequent refinements of the table layout.

getSources

public List<PlanNode> getSources()

Specified by:

getSources in class PlanNode

accept

public <R,C> R accept(PlanVisitor<R,C> visitor,
                      C context)

Overrides:

accept in class PlanNode

toString

public String toString()

Overrides:

toString in class Object

replaceChildren

public PlanNode replaceChildren(List<PlanNode> newChildren)

Specified by:

replaceChildren in class PlanNode