StarTable.StarTableScan (Apache Calcite API)

java.lang.Object
- org.apache.calcite.rel.AbstractRelNode
- - org.apache.calcite.rel.core.TableScan
  - - org.apache.calcite.schema.impl.StarTable.StarTableScan

All Implemented Interfaces:

java.lang.Cloneable, RelOptNode, RelNode

Enclosing class:

StarTable
```
public static class StarTable.StarTableScan
extends TableScan
```
Relational expression that scans a StarTable.
It has infinite cost.

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.TableScan
  table
- Fields inherited from class org.apache.calcite.rel.AbstractRelNode
  digest, id, rowType, traitSet

Constructor Summary

Constructors
Constructor Description

StarTableScan(RelOptCluster cluster, RelOptTable relOptTable)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`RelOptCost`	`computeSelfCost(RelOptPlanner planner, RelMetadataQuery mq)`	Returns the cost of this plan (not including children).

Methods inherited from class org.apache.calcite.rel.core.TableScan
accept, deriveRowType, estimateRowCount, explainTerms, getCollationList, getTable, identity, identity, project

Methods inherited from class org.apache.calcite.rel.AbstractRelNode
accept, childrenAccept, collectVariablesSet, collectVariablesUsed, computeDigest, computeSelfCost, copy, explain, getChildExps, getCluster, getConvention, getCorrelVariable, getDescription, getDigest, getExpectedInputRowType, getId, getInput, getInputs, getQuery, getRelTypeName, getRows, getRowType, getTraitSet, getVariablesSet, getVariablesStopped, isDistinct, isKey, isValid, isValid, metadata, onRegister, recomputeDigest, register, replaceInput, sole, toString

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - StarTableScan
```
public StarTableScan(RelOptCluster cluster,
                     RelOptTable relOptTable)
```
- Method Detail
  - 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 TableScan
    
    Parameters:
    
    planner - Planner for cost calculation
    
    mq - Metadata query
    
    Returns:
    
    Cost of this plan (not including children)