| /* |
| * 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.jackrabbit.oak.plugins.index.mt; |
| |
| import java.io.File; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.ConfigurationPolicy; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Property; |
| import org.apache.felix.scr.annotations.Service; |
| import org.apache.jackrabbit.oak.commons.PropertiesUtil; |
| import org.apache.jackrabbit.oak.plugins.index.lucene.spi.FulltextQueryTermsProvider; |
| import org.apache.jackrabbit.oak.spi.state.NodeState; |
| import org.apache.joshua.decoder.Decoder; |
| import org.apache.joshua.decoder.JoshuaConfiguration; |
| import org.apache.lucene.analysis.Analyzer; |
| import org.apache.lucene.search.Query; |
| import org.jetbrains.annotations.NotNull; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Factory for {@link MTFulltextQueryTermsProvider} |
| */ |
| @Component( |
| name = "org.apache.jackrabbit.oak.plugins.index.mt.MTFulltextQueryTermsProviderFactory", |
| label = "Apache Jackrabbit Oak Machine Translation Fulltext Query Terms Provider", |
| configurationFactory = true, |
| metatype = true, |
| policy = ConfigurationPolicy.REQUIRE |
| ) |
| @Service(FulltextQueryTermsProvider.class) |
| public class MTFulltextQueryTermsProviderFactory implements FulltextQueryTermsProvider { |
| |
| private static final float DEFAULT_MIN_SCORE = 0.5f; |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| |
| @Property(label = "Joshua Config Path", description = "The absolute filesystem path to Apache Joshua configuration file") |
| private static final String CONFIG_PATH = "path.to.config"; |
| |
| @Property(label = "Node types", description = "List of node types for which expanding the query via MT", cardinality = 10) |
| private static final String NODE_TYPES = "node.types"; |
| |
| @Property(label = "Minimum score", description = "Minimum allowed score for a translated phrase/term to be used for expansion", |
| floatValue = DEFAULT_MIN_SCORE) |
| private static final String MIN_SCORE = "min.score"; |
| |
| private MTFulltextQueryTermsProvider queryTermsProvider; |
| |
| @Activate |
| public void activate(Map<String, ?> config) throws Exception { |
| String pathToJoshuaConfig = PropertiesUtil.toString(config.get(CONFIG_PATH), "."); |
| String[] nts = PropertiesUtil.toStringArray(config.get(NODE_TYPES), new String[]{"Oak:unstructured"}); |
| float minScore = (float) PropertiesUtil.toDouble(config.get(MIN_SCORE), DEFAULT_MIN_SCORE); |
| log.info("activating MT FulltextQueryTermProvider from Joshua config at {} on {} nodetypes, minScore {}", pathToJoshuaConfig, nts, minScore); |
| Decoder decoder = null; |
| try { |
| log.debug("reading joshua config"); |
| JoshuaConfiguration configuration = new JoshuaConfiguration(); |
| configuration.readConfigFile(pathToJoshuaConfig); |
| configuration.setConfigFilePath(new File(pathToJoshuaConfig).getCanonicalFile().getParent()); |
| configuration.use_structured_output = true; |
| decoder = new Decoder(configuration, pathToJoshuaConfig); |
| log.debug("decoder initialized"); |
| Set<String> nodeTypes = new HashSet<>(); |
| nodeTypes.addAll(Arrays.asList(nts)); |
| queryTermsProvider = new MTFulltextQueryTermsProvider(decoder, nodeTypes, minScore); |
| } catch (Exception e) { |
| log.error("could not initialize MTFulltextQueryTermProvider", e); |
| if (decoder != null) { |
| decoder.cleanUp(); |
| } |
| } |
| } |
| |
| @Deactivate |
| public void deactivate() throws Exception { |
| if (queryTermsProvider != null) { |
| log.debug("clearing resources"); |
| queryTermsProvider.clearResources(); |
| } |
| } |
| |
| @Override |
| public Query getQueryTerm(String text, Analyzer analyzer, NodeState indexDefinition) { |
| if (queryTermsProvider != null) { |
| return queryTermsProvider.getQueryTerm(text, analyzer, indexDefinition); |
| } else { |
| return null; |
| } |
| } |
| |
| @NotNull |
| @Override |
| public Set<String> getSupportedTypes() { |
| if (queryTermsProvider != null) { |
| return queryTermsProvider.getSupportedTypes(); |
| } else { |
| return Collections.emptySet(); |
| } |
| } |
| } |