ElasticsearchRules (Calcite Elasticsearch 1.11.0 API)

```
 class ElasticsearchRules
extends Object
```
Rules and relational operators for ELASTICSEARCH calling convention.

Nested Classes
Modifier and Type	Class and Description
`(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.

Fields
Modifier and Type	Field and Description
`protected static org.slf4j.Logger`	`LOGGER`
`(package private) static RelOptRule[]`	`RULES`

Constructors
Modifier	Constructor and Description
`private`	`ElasticsearchRules()`

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

protected static final org.slf4j.Logger LOGGER

isItem
```
static String isItem(RexCall call)
```
Returns 'string' if it is a call to item['string'], null otherwise.

static List<String> elasticsearchFieldNames(RelDataType rowType)

Class ElasticsearchRules