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Merge pull request #3130 from idodeclare/feature/settings_helper
Extract SettingsHelper from SearchHelper
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opengrok-indexer/src/main/java/org/opengrok/indexer/search/SettingsHelper.java
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| /* | ||
| * CDDL HEADER START | ||
| * | ||
| * The contents of this file are subject to the terms of the | ||
| * Common Development and Distribution License (the "License"). | ||
| * You may not use this file except in compliance with the License. | ||
| * | ||
| * See LICENSE.txt included in this distribution for the specific | ||
| * language governing permissions and limitations under the License. | ||
| * | ||
| * When distributing Covered Code, include this CDDL HEADER in each | ||
| * file and include the License file at LICENSE.txt. | ||
| * If applicable, add the following below this CDDL HEADER, with the | ||
| * fields enclosed by brackets "[]" replaced with your own identifying | ||
| * information: Portions Copyright [yyyy] [name of copyright owner] | ||
| * | ||
| * CDDL HEADER END | ||
| */ | ||
|
|
||
| /* | ||
| * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved. | ||
| * Portions copyright (c) 2011 Jens Elkner. | ||
| * Portions Copyright (c) 2017-2019, Chris Fraire <cfraire@me.com>. | ||
| */ | ||
| package org.opengrok.indexer.search; | ||
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| import org.apache.lucene.index.IndexReader; | ||
| import org.opengrok.indexer.configuration.Project; | ||
| import org.opengrok.indexer.index.IndexAnalysisSettings3; | ||
| import org.opengrok.indexer.index.IndexAnalysisSettingsAccessor; | ||
| import org.opengrok.indexer.index.IndexedSymlink; | ||
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| import java.io.IOException; | ||
| import java.util.Collections; | ||
| import java.util.Comparator; | ||
| import java.util.HashMap; | ||
| import java.util.Map; | ||
| import java.util.TreeMap; | ||
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| /** | ||
| * Represents a helper class for accessing settings. | ||
| * @author Jens Elkner | ||
| */ | ||
| public class SettingsHelper { | ||
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| private final IndexReader reader; | ||
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| /** | ||
| * Key is Project name or empty string for null Project. | ||
| */ | ||
| private Map<String, IndexAnalysisSettings3> mappedAnalysisSettings; | ||
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| /** | ||
| * Key is Project name or empty string for null Project. Map is ordered by | ||
| * canonical length (ASC) and then canonical value (ASC). | ||
| */ | ||
| private Map<String, Map<String, IndexedSymlink>> mappedIndexedSymlinks; | ||
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| public SettingsHelper(IndexReader reader) { | ||
| if (reader == null) { | ||
| throw new IllegalArgumentException("reader is null"); | ||
| } | ||
| this.reader = reader; | ||
| } | ||
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| /** | ||
| * Gets any mapped symlinks (after having called {@link #getSettings(String)}). | ||
| * @return either a defined map or {@code null} | ||
| */ | ||
| public Map<String, IndexedSymlink> getSymlinks(String projectName) throws IOException { | ||
| getSettings(projectName); | ||
| String projectKey = projectName != null ? projectName : ""; | ||
| Map<String, IndexedSymlink> indexSymlinks = mappedIndexedSymlinks.get(projectKey); | ||
| if (indexSymlinks != null) { | ||
| return Collections.unmodifiableMap(indexSymlinks); | ||
| } | ||
| return null; | ||
| } | ||
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| /** | ||
| * Gets the persisted tabSize via {@link #getSettings(String)} if | ||
| * available or returns the {@code proj} tabSize if available -- or zero. | ||
| * @param proj a defined instance or {@code null} if no project is active | ||
| * @return tabSize | ||
| * @throws IOException if an I/O error occurs querying the initialized | ||
| * reader | ||
| */ | ||
| public int getTabSize(Project proj) throws IOException { | ||
| String projectName = proj != null ? proj.getName() : null; | ||
| IndexAnalysisSettings3 settings = getSettings(projectName); | ||
| int tabSize; | ||
| if (settings != null && settings.getTabSize() != null) { | ||
| tabSize = settings.getTabSize(); | ||
| } else { | ||
| tabSize = proj != null ? proj.getTabSize() : 0; | ||
| } | ||
| return tabSize; | ||
| } | ||
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| /** | ||
| * Gets the settings for a specified project. | ||
| * @param projectName a defined instance or {@code null} if no project is | ||
| * active (or empty string to mean the same thing) | ||
| * @return a defined instance or {@code null} if none is found | ||
| * @throws IOException if an I/O error occurs querying the initialized reader | ||
| */ | ||
| public IndexAnalysisSettings3 getSettings(String projectName) throws IOException { | ||
| if (mappedAnalysisSettings == null) { | ||
| IndexAnalysisSettingsAccessor dao = new IndexAnalysisSettingsAccessor(); | ||
| IndexAnalysisSettings3[] setts = dao.read(reader, Short.MAX_VALUE); | ||
| map(setts); | ||
| } | ||
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| String projectKey = projectName != null ? projectName : ""; | ||
| return mappedAnalysisSettings.get(projectKey); | ||
| } | ||
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| private void map(IndexAnalysisSettings3[] setts) { | ||
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| Map<String, IndexAnalysisSettings3> settingsMap = new HashMap<>(); | ||
| Map<String, Map<String, IndexedSymlink>> symlinksMap = new HashMap<>(); | ||
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| for (IndexAnalysisSettings3 settings : setts) { | ||
| String projectName = settings.getProjectName(); | ||
| String projectKey = projectName != null ? projectName : ""; | ||
| settingsMap.put(projectKey, settings); | ||
| symlinksMap.put(projectKey, mapSymlinks(settings)); | ||
| } | ||
| mappedAnalysisSettings = settingsMap; | ||
| mappedIndexedSymlinks = symlinksMap; | ||
| } | ||
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| private Map<String, IndexedSymlink> mapSymlinks(IndexAnalysisSettings3 settings) { | ||
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| Map<String, IndexedSymlink> res = new TreeMap<>( | ||
| Comparator.comparingInt(String::length).thenComparing(o -> o)); | ||
| for (IndexedSymlink entry : settings.getIndexedSymlinks().values()) { | ||
| res.put(entry.getCanonical(), entry); | ||
| } | ||
| return res; | ||
| } | ||
| } |
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