Package org.apache.calcite.adapter.elasticsearch

Class ElasticsearchRules

java.lang.Object

org.apache.calcite.adapter.elasticsearch.ElasticsearchRules

class ElasticsearchRules
extends java.lang.Object

Rules and relational operators for ELASTICSEARCH calling convention.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	ElasticsearchRules.ElasticsearchAggregateRule	Rule to convert an LogicalAggregate to an ElasticsearchAggregate.
(package private) static class	ElasticsearchRules.ElasticsearchConverterRule	Base class for planner rules that convert a relational expression to Elasticsearch calling convention.
private static class	ElasticsearchRules.ElasticsearchFilterRule	Rule to convert a LogicalFilter to an ElasticsearchFilter.
private static class	ElasticsearchRules.ElasticsearchProjectRule	Rule to convert a LogicalProject to an ElasticsearchProject.
private static class	ElasticsearchRules.ElasticsearchSortRule	Rule to convert a Sort to an ElasticsearchSort.
(package private) static class	ElasticsearchRules.RexToElasticsearchTranslator	Translator from RexNode to strings in Elasticsearch's expression language.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) static RelOptRule[]	RULES

Constructor Summary

Constructors

Modifier	Constructor	Description
private	ElasticsearchRules()

Method Summary

Modifier and Type	Method	Description
(package private) static java.util.List<java.lang.String>	elasticsearchFieldNames(RelDataType rowType)
(package private) static java.lang.String	isItem(RexCall call)	Returns 'string' if it is a call to item['string'], null otherwise.
(package private) static java.lang.String	quote(java.lang.String s)
(package private) static java.lang.String	stripQuotes(java.lang.String s)

Methods inherited from class java.lang.Object

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

Field Detail

RULES

static final RelOptRule[] RULES

Constructor Detail

ElasticsearchRules

private ElasticsearchRules()

Method Detail

isItem

static java.lang.String isItem(RexCall call)

Returns 'string' if it is a call to item['string'], null otherwise.

Parameters:

call - current relational expression

Returns:

literal value

elasticsearchFieldNames

static java.util.List<java.lang.String> elasticsearchFieldNames(RelDataType rowType)

quote

static java.lang.String quote(java.lang.String s)

stripQuotes

static java.lang.String stripQuotes(java.lang.String s)