Java tutorial
/* * * * This file is part of the Hesperides distribution. * * (https://github.com/voyages-sncf-technologies/hesperides) * * Copyright (c) 2016 VSCT. * * * * Hesperides is free software: you can redistribute it and/or modify * * it under the terms of the GNU General Public License as * * published by the Free Software Foundation, version 3. * * * * Hesperides is distributed in the hope that it will be useful, but * * WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * * General Public License for more details. * * * * You should have received a copy of the GNU General Public License * * along with this program. If not, see <http://www.gnu.org/licenses/>. * * */ package com.vsct.dt.hesperides.indexation.search; import com.fasterxml.jackson.databind.JavaType; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.ObjectReader; import com.github.mustachejava.DefaultMustacheFactory; import com.github.mustachejava.Mustache; import com.github.mustachejava.MustacheFactory; import com.github.mustachejava.util.DecoratedCollection; import com.vsct.dt.hesperides.indexation.ElasticSearchClient; import com.vsct.dt.hesperides.indexation.model.ElasticSearchResponse; import com.vsct.dt.hesperides.util.TemplateContentGenerator; import io.dropwizard.jackson.Jackson; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; /** * Created by william_montaz on 13/10/2014. */ public final class PropertiesSearch { private static final Logger LOGGER = LoggerFactory.getLogger(PropertiesSearch.class); public static final int SEARCH_SIZE = 50; private final MustacheFactory mustacheFactory = new DefaultMustacheFactory(); private final Mustache mustacheSearchByNamespaceLike = mustacheFactory .compile("search.properties.hesnamespace.like.mustache"); private final ObjectReader elasticSearchPropertiesReader; private final ElasticSearchClient elasticSearchClient; public PropertiesSearch(final ElasticSearchClient elasticSearchClient) { ObjectMapper objectMapper = Jackson.newObjectMapper(); JavaType type = objectMapper.getTypeFactory().constructParametricType(ElasticSearchResponse.class, PropertiesSearchResponse.class); this.elasticSearchPropertiesReader = objectMapper.reader(type); this.elasticSearchClient = elasticSearchClient; } public List<PropertiesSearchResponse> searchPropertiesByNamespaceLike(final String[] wildcards) { String url = String.format("/evaluatedproperties/_search?size=%1$s", SEARCH_SIZE); String body = TemplateContentGenerator.from(mustacheSearchByNamespaceLike) .put("wildcards", new DecoratedCollection<>(Arrays.asList(wildcards))).generate(); ElasticSearchResponse<PropertiesSearchResponse> esResponse = elasticSearchClient .withResponseReader(elasticSearchPropertiesReader).post(url, body); LOGGER.debug("search properties: {} hits", esResponse.getHitsNumber()); return esResponse.streamOfData().collect(Collectors.toList()); } }