Package org.apache.calcite.adapter.splunk

Class SplunkPushDownRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelRule<SplunkPushDownRule.Config>

org.apache.calcite.adapter.splunk.SplunkPushDownRule

@Enclosing
public class SplunkPushDownRule
extends RelRule<SplunkPushDownRule.Config>

Planner rule to push filters and projections to Splunk.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	SplunkPushDownRule.Config	Rule configuration.

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelRule

RelRule.Done, RelRule.MatchHandler<R extends RelOptRule>, RelRule.OperandBuilder, RelRule.OperandDetailBuilder<R extends RelNode>, RelRule.OperandTransform

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields

Modifier and Type	Field	Description
static final SplunkPushDownRule	FILTER
static final SplunkPushDownRule	FILTER_ON_PROJECT
static final SplunkPushDownRule	PROJECT
static final SplunkPushDownRule	PROJECT_ON_FILTER

Fields inherited from class org.apache.calcite.plan.RelRule

config

Fields inherited from class org.apache.calcite.plan.RelOptRule

description, operands, relBuilderFactory

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SplunkPushDownRule(SplunkPushDownRule.Config config)	Creates a SplunkPushDownRule.
protected	SplunkPushDownRule(RelOptRuleOperand operand, String id)	Deprecated.
protected	SplunkPushDownRule(RelOptRuleOperand operand, RelBuilderFactory relBuilderFactory, String id)	Deprecated.

Method Summary

Modifier and Type	Method	Description
protected RelNode	appendSearchString(String toAppend, SplunkTableScan splunkRel, LogicalProject topProj, LogicalProject bottomProj, RelDataType topRow, RelDataType bottomRow)	Appends a search string.
static String	getFieldsString(RelDataType row)
void	onMatch(RelOptRuleCall call)	Receives notification about a rule match.
static String	searchEscape(String str)
protected void	transformToFarragoUdxRel(RelOptRuleCall call, SplunkTableScan splunkRel, LogicalFilter filter, LogicalProject topProj, LogicalProject bottomProj)

Methods inherited from class org.apache.calcite.plan.RelOptRule

any, convert, convert, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

PROJECT_ON_FILTER

public static final SplunkPushDownRule PROJECT_ON_FILTER

FILTER_ON_PROJECT

public static final SplunkPushDownRule FILTER_ON_PROJECT

FILTER

public static final SplunkPushDownRule FILTER

PROJECT

public static final SplunkPushDownRule PROJECT

Constructor Details

SplunkPushDownRule

protected SplunkPushDownRule(SplunkPushDownRule.Config config)

Creates a SplunkPushDownRule.

SplunkPushDownRule

@Deprecated
protected SplunkPushDownRule(RelOptRuleOperand operand,
 String id)

Deprecated.

SplunkPushDownRule

@Deprecated
protected SplunkPushDownRule(RelOptRuleOperand operand,
 RelBuilderFactory relBuilderFactory,
 String id)

Deprecated.

Method Details

onMatch

public void onMatch(RelOptRuleCall call)

Description copied from class: RelOptRule

Receives notification about a rule match. At the time that this method is called, call.rels holds the set of relational expressions which match the operands to the rule; call.rels[0] is the root expression.

Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelHintsPropagator) to register the expression.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

• RelOptRule.matches(RelOptRuleCall)

appendSearchString

protected RelNode appendSearchString(String toAppend,
 SplunkTableScan splunkRel,
 LogicalProject topProj,
 LogicalProject bottomProj,
 RelDataType topRow,
 RelDataType bottomRow)

Appends a search string.

Parameters:

toAppend - Search string to append

splunkRel - Relational expression

topProj - Top projection

bottomProj - Bottom projection

searchEscape

public static String searchEscape(String str)

transformToFarragoUdxRel

protected void transformToFarragoUdxRel(RelOptRuleCall call,
 SplunkTableScan splunkRel,
 LogicalFilter filter,
 LogicalProject topProj,
 LogicalProject bottomProj)

getFieldsString

public static String getFieldsString(RelDataType row)