org.eigenbase.relopt.hep
Class HepProgram

java.lang.Object
  org.eigenbase.relopt.hep.HepProgram

public class HepProgram
extends Object

HepProgram specifies the order in which rules should be attempted by HepPlanner. Use HepProgramBuilder to create a new instance of HepProgram.

Note that the structure of a program is immutable, but the planner uses it as read/write during planning, so a program can only be in use by a single planner at a time.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/relopt/hep/HepProgram.java#7 $

Author:

John V. Sichi

Field Summary

(package private) HepInstruction.EndGroup	group
(package private) List<HepInstruction>	instructions
static int	MATCH_UNTIL_FIXPOINT Symbolic constant for matching until no more matches occur.
(package private) int	matchLimit
(package private) HepMatchOrder	matchOrder

Constructor Summary

HepProgram(List<HepInstruction> instructions)
Creates a new empty HepProgram.

Method Summary

(package private) void

initialize(boolean clearCache)

Methods inherited from class java.lang.Object

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

Field Detail

MATCH_UNTIL_FIXPOINT

public static final int MATCH_UNTIL_FIXPOINT

Symbolic constant for matching until no more matches occur.

See Also:

Constant Field Values

instructions

final List<HepInstruction> instructions

matchLimit

int matchLimit

matchOrder

HepMatchOrder matchOrder

group

HepInstruction.EndGroup group

Constructor Detail

HepProgram

HepProgram(List<HepInstruction> instructions)

Creates a new empty HepProgram. The program has an initial match order of HepMatchOrder.ARBITRARY, and an initial match limit of MATCH_UNTIL_FIXPOINT.

Method Detail

initialize

void initialize(boolean clearCache)