| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to you under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.calcite.adapter.elasticsearch2; |
| |
| import org.apache.calcite.adapter.elasticsearch.AbstractElasticsearchTable; |
| import org.apache.calcite.linq4j.AbstractEnumerable; |
| import org.apache.calcite.linq4j.Enumerable; |
| import org.apache.calcite.linq4j.Enumerator; |
| import org.apache.calcite.linq4j.function.Function1; |
| |
| import org.apache.calcite.util.Util; |
| |
| import org.elasticsearch.client.Client; |
| import org.elasticsearch.search.SearchHit; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| /** |
| * Table based on an Elasticsearch2 type. |
| */ |
| public class Elasticsearch2Table extends AbstractElasticsearchTable { |
| private final Client client; |
| |
| /** |
| * Creates an Elasticsearch2Table. |
| */ |
| public Elasticsearch2Table(Client client, String indexName, String typeName) { |
| super(indexName, typeName); |
| this.client = client; |
| } |
| |
| @Override protected Enumerable<Object> find(String index, List<String> ops, |
| List<Map.Entry<String, Class>> fields) { |
| final String dbName = index; |
| |
| final String queryString = "{" + Util.toString(ops, "", ", ", "") + "}"; |
| |
| final Function1<SearchHit, Object> getter = Elasticsearch2Enumerator.getter(fields); |
| |
| return new AbstractEnumerable<Object>() { |
| public Enumerator<Object> enumerator() { |
| final Iterator<SearchHit> cursor = client.prepareSearch(dbName).setTypes(typeName) |
| .setSource(queryString).execute().actionGet().getHits().iterator(); |
| return new Elasticsearch2Enumerator(cursor, getter); |
| } |
| }; |
| } |
| } |
| |
| // End Elasticsearch2Table.java |