org.eigenbase.relopt
Class RelOptAbstractTable

java.lang.Object
  org.eigenbase.relopt.RelOptAbstractTable

All Implemented Interfaces:

RelOptTable

Direct Known Subclasses:

FarragoPreparingStmt.PermutingRelOptTable, FarragoQueryNamedColumnSet, MedAbstractColumnSet

public abstract class RelOptAbstractTable
extends Object
implements RelOptTable

A RelOptAbstractTable is a partial implementation of RelOptTable.

Since:

May 3, 2002

Version:

$Id: //open/dev/farrago/src/org/eigenbase/relopt/RelOptAbstractTable.java#12 $

Author:

jhyde

Field Summary

protected String	name
protected RelDataType	rowType
protected RelOptSchema	schema

Constructor Summary

protected

RelOptAbstractTable(RelOptSchema schema, String name, RelDataType rowType)

Method Summary

List<RelCollation>	getCollationList() Returns a description of the physical ordering (or orderings) of the rows returned from this table.
String	getName()
String[]	getQualifiedName() Obtains an identifier for this table.
RelOptSchema	getRelOptSchema() Returns the RelOptSchema this table belongs to.
double	getRowCount() Returns an estimate of the number of rows in the table.
RelDataType	getRowType() Describes the type of rows returned by this table.
void	setRowType(RelDataType rowType)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eigenbase.relopt.RelOptTable

toRel

Field Detail

schema

protected RelOptSchema schema

rowType

protected RelDataType rowType

name

protected String name

Constructor Detail

RelOptAbstractTable

protected RelOptAbstractTable(RelOptSchema schema,
                              String name,
                              RelDataType rowType)

Method Detail

getName

public String getName()

getQualifiedName

public String[] getQualifiedName()

Description copied from interface: RelOptTable

Obtains an identifier for this table. The identifier must be unique with respect to the Connection producing this table.

Specified by:

getQualifiedName in interface RelOptTable

Returns:

qualified name

getRowCount

public double getRowCount()

Description copied from interface: RelOptTable

Returns an estimate of the number of rows in the table.

Specified by:

getRowCount in interface RelOptTable

getRowType

public RelDataType getRowType()

Description copied from interface: RelOptTable

Describes the type of rows returned by this table.

Specified by:

getRowType in interface RelOptTable

setRowType

public void setRowType(RelDataType rowType)

getRelOptSchema

public RelOptSchema getRelOptSchema()

Description copied from interface: RelOptTable

Returns the RelOptSchema this table belongs to.

Specified by:

getRelOptSchema in interface RelOptTable

getCollationList

public List<RelCollation> getCollationList()

Description copied from interface: RelOptTable

Returns a description of the physical ordering (or orderings) of the rows returned from this table.

Specified by:

getCollationList in interface RelOptTable

See Also:

RelNode.getCollationList()