org.apache.calcite.adapter.elasticsearch

Class ElasticsearchTable

java.lang.Object

org.apache.calcite.schema.impl.AbstractTable

org.apache.calcite.adapter.java.AbstractQueryableTable

org.apache.calcite.adapter.elasticsearch.ElasticsearchTable

All Implemented Interfaces:

QueryableTable, Table, TranslatableTable

public class ElasticsearchTable
extends AbstractQueryableTable
implements TranslatableTable

Table based on an Elasticsearch type.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ElasticsearchTable.ElasticsearchQueryable<T> Implementation of Queryable based on a ElasticsearchTable.

Field Summary

Fields

Modifier and Type	Field and Description
private org.elasticsearch.client.Client	client
private String	indexName
private String	typeName

Fields inherited from class org.apache.calcite.adapter.java.AbstractQueryableTable

elementType

Constructor Summary

Constructors

Constructor and Description
ElasticsearchTable(org.elasticsearch.client.Client client, String indexName, String typeName) Creates an ElasticsearchTable.

Method Summary

Methods

Modifier and Type	Method and Description
<T> Queryable<T>	asQueryable(QueryProvider queryProvider, SchemaPlus schema, String tableName)
private Enumerable<Object>	find(String index, List<String> ops, List<Map.Entry<String,Class>> fields) Executes a "find" operation on the underlying type.
RelDataType	getRowType(RelDataTypeFactory relDataTypeFactory)
RelNode	toRel(RelOptTable.ToRelContext context, RelOptTable relOptTable)
String	toString()

Methods inherited from class org.apache.calcite.adapter.java.AbstractQueryableTable

getElementType, getExpression

Methods inherited from class org.apache.calcite.schema.impl.AbstractTable

getJdbcTableType, getStatistic

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.calcite.schema.Table

getJdbcTableType, getStatistic

Field Detail

client

private final org.elasticsearch.client.Client client

indexName

private final String indexName

typeName

private final String typeName

Constructor Detail

ElasticsearchTable

public ElasticsearchTable(org.elasticsearch.client.Client client,
                  String indexName,
                  String typeName)

Creates an ElasticsearchTable.

Method Detail

toString

public String toString()

Overrides:

toString in class Object

getRowType

public RelDataType getRowType(RelDataTypeFactory relDataTypeFactory)

Specified by:

getRowType in interface Table

asQueryable

public <T> Queryable<T> asQueryable(QueryProvider queryProvider,
                           SchemaPlus schema,
                           String tableName)

Specified by:

asQueryable in interface QueryableTable

toRel

public RelNode toRel(RelOptTable.ToRelContext context,
            RelOptTable relOptTable)

Specified by:

toRel in interface TranslatableTable

find

private Enumerable<Object> find(String index,
                      List<String> ops,
                      List<Map.Entry<String,Class>> fields)

Executes a "find" operation on the underlying type.

For example, client.prepareSearch(index).setTypes(type) .setSource("{\"fields\" : [\"state\"]}")

Parameters:

index - Elasticsearch index

ops - List of operations represented as Json strings.

fields - List of fields to project; or null to return map

Returns:

Enumerator of results