Package org.apache.calcite.adapter.elasticsearch

Query provider based on an Elasticsearch2 DB.

Interface Summary

Interface	Description
ElasticsearchConstants	Internal constants referenced in this package.
ElasticsearchJson.Aggregation	Identifies all aggregations
ElasticsearchJson.HasAggregations	Allows traversing aggregations tree
ElasticsearchRel	Relational expression that uses Elasticsearch calling convention.
PredicateAnalyzer.Expression	Empty interface; exists only to define type hierarchy
PredicateAnalyzer.TerminalExpression	Empty interface; exists only to define type hierarchy

Class Summary

Class	Description
ElasticsearchAggregate	Implementation of Aggregate relational expression for ElasticSearch.
ElasticsearchEnumerators	Util functions which convert ElasticsearchJson.SearchHit into calcite specific return type (map, object[], list etc.)
ElasticsearchFilter	Implementation of a Filter relational expression in Elasticsearch.
ElasticsearchFilter.PredicateAnalyzerTranslator	New version of translator which uses visitor pattern and allow to process more complex (boolean) predicates.
ElasticsearchFilter.Translator	Translates RexNode expressions into Elasticsearch expression strings.
ElasticsearchJson	Internal objects (and deserializers) used to parse Elasticsearch results (which are in JSON format).
ElasticsearchJson.Aggregations	ElasticsearchJson.Aggregation container.
ElasticsearchJson.AggregationsDeserializer	Allows to de-serialize nested aggregation structures.
ElasticsearchJson.Bucket	A bucket represents a criteria to which all documents that fall in it adhere to.
ElasticsearchJson.GroupValue	Distinguishes from ElasticsearchJson.MultiValue.
ElasticsearchJson.MultiBucketsAggregation	An aggregation that returns multiple buckets
ElasticsearchJson.MultiValue	Multi value aggregatoin like Stats
ElasticsearchJson.Result	Response from Elastic
ElasticsearchJson.RowKey	Identifies a calcite row (as in relational algebra)
ElasticsearchJson.SearchHit	Concrete result record which matched the query.
ElasticsearchJson.SearchHits	Similar to SearchHits in ES.
ElasticsearchMapping	Stores Elasticsearch mapping information for particular index/type.
ElasticsearchMapping.Datatype	Represents elastic data-type, like long, keyword, date etc.
ElasticsearchProject	Implementation of Project relational expression in Elasticsearch.
ElasticsearchRel.Implementor	Callback for the implementation process that converts a tree of ElasticsearchRel nodes into an Elasticsearch query.
ElasticsearchRules	Rules and relational operators for ELASTICSEARCH calling convention.
ElasticsearchRules.ElasticsearchAggregateRule	Rule to convert an LogicalAggregate to an ElasticsearchAggregate.
ElasticsearchRules.ElasticsearchConverterRule	Base class for planner rules that convert a relational expression to Elasticsearch calling convention.
ElasticsearchRules.ElasticsearchFilterRule	Rule to convert a LogicalFilter to an ElasticsearchFilter.
ElasticsearchRules.ElasticsearchProjectRule	Rule to convert a LogicalProject to an ElasticsearchProject.
ElasticsearchRules.ElasticsearchSortRule	Rule to convert a Sort to an ElasticsearchSort.
ElasticsearchRules.RexToElasticsearchTranslator	Translator from RexNode to strings in Elasticsearch's expression language.
ElasticsearchSchema	Schema mapped onto an index of ELASTICSEARCH types.
ElasticsearchSchemaFactory	Factory that creates an ElasticsearchSchema.
ElasticsearchSearchResult	Internal object used to parse elastic search result.
ElasticsearchSearchResult.SearchHit	Concrete result record which matched the query.
ElasticsearchSearchResult.SearchHits	Similar to SearchHits in ES.
ElasticsearchSort	Implementation of Sort relational expression in Elasticsearch.
ElasticsearchTable	Table based on an Elasticsearch type.
ElasticsearchTable.ElasticsearchQueryable<T>	Implementation of Queryable based on a ElasticsearchTable.
ElasticsearchTableScan	Relational expression representing a scan of an Elasticsearch type.
ElasticsearchToEnumerableConverter	Relational expression representing a scan of a table in an Elasticsearch data source.
ElasticsearchToEnumerableConverterRule	Rule to convert a relational expression from ElasticsearchRel.CONVENTION to EnumerableConvention.
ElasticsearchTransport	Set of predefined functions for REST interaction with elastic search API.
ElasticsearchTransport.HttpFunction	Basic rest operations interacting with elastic cluster.
ElasticsearchTransport.JsonParserFn<T>	Parses HTTP response into some class using jackson API.
MapProjectionFieldVisitor	Visitor that extracts the actual field name from an item expression.
PredicateAnalyzer	Query predicate analyzer.
PredicateAnalyzer.CastExpression	SQL cast: cast(col as INTEGER)
PredicateAnalyzer.CompoundQueryExpression	Builds conjunctions / disjunctions based on existing expressions
PredicateAnalyzer.LiteralExpression	Literal like 'foo' or 42 or true etc.
PredicateAnalyzer.NamedFieldExpression	Used for bind variables
PredicateAnalyzer.NotLikeConverter	Converts expressions of the form NOT(LIKE(...)) into NOT_LIKE(...)
PredicateAnalyzer.QueryExpression	Main expression operators (like equals, gt, exists etc.)
PredicateAnalyzer.SimpleQueryExpression	Usually basic expression of type a = 'val' or b > 42.
PredicateAnalyzer.Visitor	Traverses RexNode tree and builds ES query.
PredicateAnalyzer.Visitor.SwapResult	Holder class for a pair of expressions.
QueryBuilders	Utility class to generate elastic search queries.
QueryBuilders.BoolQueryBuilder	Query for boolean logic
QueryBuilders.ConstantScoreQueryBuilder	A query that wraps a filter and simply returns a constant score equal to the query boost for every document in the filter.
QueryBuilders.ExistsQueryBuilder	Constructs a query that only match on documents that the field has a value in them.
QueryBuilders.MatchAllQueryBuilder	A query that matches on all documents.
QueryBuilders.QueryBuilder	Base class to build ES queries
QueryBuilders.RangeQueryBuilder	A Query that matches documents within an range of terms.
QueryBuilders.RegexpQueryBuilder	A Query that does fuzzy matching for a specific value.
QueryBuilders.TermQueryBuilder	A Query that matches documents containing a term.
QueryBuilders.TermsQueryBuilder	A filter for a field based on several terms matching on any of them.
Scrolling	"Iterator" which retrieves results lazily and in batches.
Scrolling.AutoClosingIterator	Observes when existing iterator has ended and clears context (scroll) if any.
Scrolling.SequentialIterator	Iterator which consumes current scrollId until full search result is fetched or limit is reached.

Enum Summary

Enum	Description
ElasticsearchMethod	Builtin methods in the Elasticsearch adapter.
ElasticsearchVersion	Identifies current ES version at runtime.

Exception Summary

Exception	Description
ExpressionNotAnalyzableException	Thrown when RelNode expression can't be processed (or converted into ES query)
PredicateAnalyzer.ExpressionNotAnalyzableException	Thrown when RelNode expression can't be processed (or converted into ES query)
PredicateAnalyzer.PredicateAnalyzerException	Internal exception