org.h2.command.dml

Class AllColumnsForPlan

java.lang.Object

org.h2.command.dml.AllColumnsForPlan

public class AllColumnsForPlan
extends java.lang.Object

This information is expensive to compute for large queries, so do so on-demand. Also store the information pre-mapped by table to avoid expensive traversal.

Constructor Summary

Constructors

Constructor and Description
AllColumnsForPlan(TableFilter[] filters)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(Column newCol) Called by ExpressionVisitor.
java.util.ArrayList<Column>	get(Table table) Used by index to calculate the cost of a scan.

Methods inherited from class java.lang.Object

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

Constructor Detail

AllColumnsForPlan

public AllColumnsForPlan(TableFilter[] filters)

Method Detail

add

public void add(Column newCol)

Called by ExpressionVisitor.

Parameters:

newCol - new column to be added.

get

public java.util.ArrayList<Column> get(Table table)

Used by index to calculate the cost of a scan.

Parameters:

table - the table.

Returns:

all table's referenced columns.