Package org.apache.calcite.adapter.mongodb

Class MongoRules

java.lang.Object

org.apache.calcite.adapter.mongodb.MongoRules

public class MongoRules
extends java.lang.Object

Rules and relational operators for MONGO calling convention.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	MongoRules.MongoAggregateRule	Rule to convert an LogicalAggregate to an MongoAggregate.
(package private) static class	MongoRules.MongoConverterRule	Base class for planner rules that convert a relational expression to MongoDB calling convention.
private static class	MongoRules.MongoFilterRule	Rule to convert a LogicalFilter to a MongoFilter.
private static class	MongoRules.MongoProjectRule	Rule to convert a LogicalProject to a MongoProject.
private static class	MongoRules.MongoSortRule	Rule to convert a Sort to a MongoSort.
(package private) static class	MongoRules.RexToMongoTranslator	Translator from RexNode to strings in MongoDB's expression language.

Field Summary

Fields

Modifier and Type	Field	Description
protected static org.slf4j.Logger	LOGGER
static RelOptRule[]	RULES

Constructor Summary

Constructors

Modifier	Constructor	Description
private	MongoRules()

Method Summary

Modifier and Type	Method	Description
(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	maybeQuote(java.lang.String s)
(package private) static java.util.List<java.lang.String>	mongoFieldNames(RelDataType rowType)
private static boolean	needsQuote(java.lang.String s)
(package private) static java.lang.String	quote(java.lang.String s)

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

protected static final org.slf4j.Logger LOGGER

RULES

public static final RelOptRule[] RULES

Constructor Detail

MongoRules

private MongoRules()

Method Detail

isItem

static java.lang.String isItem(RexCall call)

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

mongoFieldNames

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

maybeQuote

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

quote

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

needsQuote

private static boolean needsQuote(java.lang.String s)