Package org.apache.calcite.rel.logical

Class LogicalTableFunctionScan

java.lang.Object

org.apache.calcite.rel.AbstractRelNode

org.apache.calcite.rel.core.TableFunctionScan

org.apache.calcite.rel.logical.LogicalTableFunctionScan

All Implemented Interfaces:

java.lang.Cloneable, RelOptNode, RelNode

public class LogicalTableFunctionScan
extends TableFunctionScan

Sub-class of TableFunctionScan not targeted at any particular engine or calling convention.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.rel.RelNode

RelNode.Context

Field Summary

Fields inherited from class org.apache.calcite.rel.core.TableFunctionScan

columnMappings

Fields inherited from class org.apache.calcite.rel.AbstractRelNode

digest, id, rowType, traitSet

Constructor Summary

Constructors

Constructor	Description
LogicalTableFunctionScan(RelOptCluster cluster, java.util.List<RelNode> inputs, RexNode rexCall, java.lang.reflect.Type elementType, RelDataType rowType, java.util.Set<RelColumnMapping> columnMappings)	Deprecated.
LogicalTableFunctionScan(RelOptCluster cluster, RelTraitSet traitSet, java.util.List<RelNode> inputs, RexNode rexCall, java.lang.reflect.Type elementType, RelDataType rowType, java.util.Set<RelColumnMapping> columnMappings)	Creates a LogicalTableFunctionScan.
LogicalTableFunctionScan(RelInput input)	Creates a LogicalTableFunctionScan by parsing serialized output.

Method Summary

Modifier and Type	Method	Description
RelOptCost	computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq)	Returns the cost of this plan (not including children).
LogicalTableFunctionScan	copy(RelTraitSet traitSet, java.util.List<RelNode> inputs, RexNode rexCall, java.lang.reflect.Type elementType, RelDataType rowType, java.util.Set<RelColumnMapping> columnMappings)	Copies this relational expression, substituting traits and inputs.
static LogicalTableFunctionScan	create(RelOptCluster cluster, java.util.List<RelNode> inputs, RexNode rexCall, java.lang.reflect.Type elementType, RelDataType rowType, java.util.Set<RelColumnMapping> columnMappings)	Creates a LogicalTableFunctionScan.

Methods inherited from class org.apache.calcite.rel.core.TableFunctionScan

accept, copy, estimateRowCount, explainTerms, getCall, getChildExps, getColumnMappings, getElementType, getInputs, replaceInput

Methods inherited from class org.apache.calcite.rel.AbstractRelNode

accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, deriveRowType, explain, getCluster, getCollationList, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getQuery, getRelTypeName, getRows, getRowType, getTable, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, sole, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

LogicalTableFunctionScan

public LogicalTableFunctionScan(RelOptCluster cluster,
                                RelTraitSet traitSet,
                                java.util.List<RelNode> inputs,
                                RexNode rexCall,
                                java.lang.reflect.Type elementType,
                                RelDataType rowType,
                                java.util.Set<RelColumnMapping> columnMappings)

Creates a LogicalTableFunctionScan.

Parameters:

cluster - Cluster that this relational expression belongs to

inputs - 0 or more relational inputs

rexCall - function invocation expression

elementType - element type of the collection that will implement this table

rowType - row type produced by function

columnMappings - column mappings associated with this function

LogicalTableFunctionScan

@Deprecated
public LogicalTableFunctionScan(RelOptCluster cluster,
                                java.util.List<RelNode> inputs,
                                RexNode rexCall,
                                java.lang.reflect.Type elementType,
                                RelDataType rowType,
                                java.util.Set<RelColumnMapping> columnMappings)

Deprecated.

LogicalTableFunctionScan

public LogicalTableFunctionScan(RelInput input)

Creates a LogicalTableFunctionScan by parsing serialized output.

Method Detail

create

public static LogicalTableFunctionScan create(RelOptCluster cluster,
                                              java.util.List<RelNode> inputs,
                                              RexNode rexCall,
                                              java.lang.reflect.Type elementType,
                                              RelDataType rowType,
                                              java.util.Set<RelColumnMapping> columnMappings)

Creates a LogicalTableFunctionScan.

copy

public LogicalTableFunctionScan copy(RelTraitSet traitSet,
                                     java.util.List<RelNode> inputs,
                                     RexNode rexCall,
                                     java.lang.reflect.Type elementType,
                                     RelDataType rowType,
                                     java.util.Set<RelColumnMapping> columnMappings)

Description copied from class: TableFunctionScan

Copies this relational expression, substituting traits and inputs.

Specified by:

copy in class TableFunctionScan

Parameters:

traitSet - Traits

inputs - 0 or more relational inputs

rexCall - Function invocation expression

elementType - Element type of the collection that will implement this table

rowType - Row type produced by function

columnMappings - Column mappings associated with this function

Returns:

Copy of this relational expression, substituting traits and inputs

computeSelfCost

public RelOptCost computeSelfCost(RelOptPlanner planner,
                                  RelMetadataQuery mq)

Description copied from interface: RelNode

Returns the cost of this plan (not including children). The base implementation throws an error; derived classes should override.

NOTE jvs 29-Mar-2006: Don't call this method directly. Instead, use RelMetadataQuery.getNonCumulativeCost(org.apache.calcite.rel.RelNode), which gives plugins a chance to override the rel's default ideas about cost.

Specified by:

computeSelfCost in interface RelNode

Overrides:

computeSelfCost in class AbstractRelNode

Parameters:

planner - Planner for cost calculation

mq - Metadata query

Returns:

Cost of this plan (not including children)