org.apache.calcite.tools

Class Programs

java.lang.Object

org.apache.calcite.tools.Programs

public class Programs
extends Object

Utilities for creating Programs.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	Programs.DecorrelateProgram Program that de-correlates a query.
(package private) static class	Programs.RuleSetProgram Program backed by a RuleSet.
private static class	Programs.SequenceProgram Program that runs sub-programs, sending the output of the previous as input to the next.
private static class	Programs.TrimFieldsProgram Program that trims fields.

Field Summary

Fields

Modifier and Type	Field and Description
static Program	CALC_PROGRAM Program that converts filters and projects to Calcs.
static com.google.common.collect.ImmutableList<RelOptRule>	CALC_RULES
static com.google.common.collect.ImmutableSet<RelOptRule>	RULE_SET
private static com.google.common.base.Function<RuleSet,Program>	RULE_SET_TO_PROGRAM
static Program	SUB_QUERY_PROGRAM Program that expands sub-queries.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	Programs()

Method Summary

Modifier and Type	Method and Description
static Program	calc(RelMetadataProvider metadataProvider)
static Program	getProgram()
static Program	hep(Iterable<? extends RelOptRule> rules, boolean noDag, RelMetadataProvider metadataProvider) Creates a program that executes a list of rules in a HEP planner.
static Program	heuristicJoinOrder(Iterable<? extends RelOptRule> rules, boolean bushy, int minJoinCount) Creates a program that invokes heuristic join-order optimization (via JoinToMultiJoinRule, MultiJoin and LoptOptimizeJoinRule) if there are 6 or more joins (7 or more relations).
static List<Program>	listOf(List<RuleSet> ruleSets) Creates a list of programs based on a list of rule sets.
static List<Program>	listOf(RuleSet... ruleSets) Creates a list of programs based on an array of rule sets.
static Program	of(HepProgram hepProgram, boolean noDag, RelMetadataProvider metadataProvider) Creates a program that executes a HepProgram.
static Program	of(RuleSet ruleSet) Creates a program that executes a rule set.
static Program	ofRules(Iterable<? extends RelOptRule> rules) Creates a program from a list of rules.
static Program	ofRules(RelOptRule... rules) Creates a program from a list of rules.
static Program	sequence(Program... programs) Creates a program that executes a sequence of programs.
static Program	standard() Returns the standard program used by Prepare.
static Program	standard(RelMetadataProvider metadataProvider) Returns the standard program with user metadata provider.
static Program	subquery(RelMetadataProvider metadataProvider) Deprecated.
static Program	subQuery(RelMetadataProvider metadataProvider)

Methods inherited from class java.lang.Object

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

Field Detail

RULE_SET_TO_PROGRAM

private static final com.google.common.base.Function<RuleSet,Program> RULE_SET_TO_PROGRAM

CALC_RULES

public static final com.google.common.collect.ImmutableList<RelOptRule> CALC_RULES

CALC_PROGRAM

public static final Program CALC_PROGRAM

Program that converts filters and projects to Calcs.

SUB_QUERY_PROGRAM

public static final Program SUB_QUERY_PROGRAM

Program that expands sub-queries.

RULE_SET

public static final com.google.common.collect.ImmutableSet<RelOptRule> RULE_SET

Constructor Detail

Programs

private Programs()

Method Detail

of

public static Program of(RuleSet ruleSet)

Creates a program that executes a rule set.

listOf

public static List<Program> listOf(RuleSet... ruleSets)

Creates a list of programs based on an array of rule sets.

listOf

public static List<Program> listOf(List<RuleSet> ruleSets)

Creates a list of programs based on a list of rule sets.

ofRules

public static Program ofRules(RelOptRule... rules)

Creates a program from a list of rules.

ofRules

public static Program ofRules(Iterable<? extends RelOptRule> rules)

Creates a program from a list of rules.

sequence

public static Program sequence(Program... programs)

Creates a program that executes a sequence of programs.

hep

public static Program hep(Iterable<? extends RelOptRule> rules,
                          boolean noDag,
                          RelMetadataProvider metadataProvider)

Creates a program that executes a list of rules in a HEP planner.

of

public static Program of(HepProgram hepProgram,
                         boolean noDag,
                         RelMetadataProvider metadataProvider)

Creates a program that executes a HepProgram.

heuristicJoinOrder

public static Program heuristicJoinOrder(Iterable<? extends RelOptRule> rules,
                                         boolean bushy,
                                         int minJoinCount)

Creates a program that invokes heuristic join-order optimization (via JoinToMultiJoinRule, MultiJoin and LoptOptimizeJoinRule) if there are 6 or more joins (7 or more relations).

calc

public static Program calc(RelMetadataProvider metadataProvider)

subquery

@Deprecated
public static Program subquery(RelMetadataProvider metadataProvider)

Deprecated.

subQuery

public static Program subQuery(RelMetadataProvider metadataProvider)

getProgram

public static Program getProgram()

standard

public static Program standard()

Returns the standard program used by Prepare.

standard

public static Program standard(RelMetadataProvider metadataProvider)

Returns the standard program with user metadata provider.