Access2Elasticsearch.groovy

package test2es

import org.elasticsearch.client.Client
import org.elasticsearch.node.NodeBuilder
import org.elasticsearch.node.Node


class Access2ES {

    private final Client client

    public Client getClient() {
        return this.client
    }

    /**
     * constructor
     *
     *
     * @param builder
     */
    public Access2ES(Builder builder) {
        this.client = builder.client
    }

    /**
     * Builder
     *
     */
    public static class Builder {
        private Node   node
        private Client client

        public Builder() {
            this.node = NodeBuilder.nodeBuilder().clusterName("elasticsearch").client(true).node()

            //セッティング情報をインスタンス生成時にお試しで出力
            println(node.settings())

            this.client = node.client()
        }

        public Access2ES build() {
            return new Access2ES(this)
        }
    }
}

build.gradle

apply plugin: 'java'
apply plugin: 'groovy'
apply plugin: 'application'

version = '1.0'

repositories {
    mavenCentral()
}

dependencies {
    compile     'org.codehaus.groovy:groovy-all:2.1.5'

    compile     'org.elasticsearch:elasticsearch:1.1.1'

    testCompile group: 'junit', name: 'junit', version: '4.11'
}

mainClassName = 'test2es.Main'

Main.groovy

package test2es

class Main {

    public static void main(String[] args) {
        Access2ES.Builder builder = new Access2ES.Builder()

        Access2ES access2ES = builder.build()

        println(access2ES.client.getClass())
    }

}

searchQuery.groovy

package test2es

import org.elasticsearch.action.search.SearchResponse
import org.elasticsearch.action.search.SearchType
import org.elasticsearch.index.query.QueryBuilders

class Main {

    public static void main(String[] args) {
        Access2ES.Builder builder = new Access2ES.Builder()

        Access2ES access2ES = builder.build()

        SearchResponse response = access2ES.client.prepareSearch("index_name")
                .setSearchType(SearchType.DFS_QUERY_THEN_FETCH)
                .setQuery(QueryBuilders.queryString("keyword"))
                .setFrom(0).setSize(1).setExplain(false)
                .execute()
                .actionGet()

        println(response.toString())
    }
}