org.sonar.api.batch.rule.internal.DefaultRules.java Source code

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Here is the source code for org.sonar.api.batch.rule.internal.DefaultRules.java

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/*
 * SonarQube
 * Copyright (C) 2009-2017 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.api.batch.rule.internal;

import com.google.common.collect.ImmutableTable;

import com.google.common.collect.HashBasedTable;
import org.sonar.api.batch.rule.Rule;
import com.google.common.collect.Table;
import com.google.common.collect.ImmutableListMultimap;
import com.google.common.collect.ListMultimap;
import org.apache.commons.lang.StringUtils;
import org.sonar.api.batch.rule.Rules;
import org.sonar.api.rule.RuleKey;

import javax.annotation.concurrent.Immutable;

import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

@Immutable
class DefaultRules implements Rules {

    // TODO use disk-backed cache (persistit) instead of full in-memory cache ?
    private final ListMultimap<String, Rule> rulesByRepository;
    private final ImmutableTable<String, String, List<Rule>> rulesByRepositoryAndInternalKey;

    DefaultRules(Collection<NewRule> newRules) {
        ImmutableListMultimap.Builder<String, Rule> builder = ImmutableListMultimap.builder();
        Table<String, String, List<Rule>> tableBuilder = HashBasedTable.create();

        for (NewRule newRule : newRules) {
            DefaultRule r = new DefaultRule(newRule);
            builder.put(r.key().repository(), r);
            addToTable(tableBuilder, r);
        }

        rulesByRepository = builder.build();
        rulesByRepositoryAndInternalKey = ImmutableTable.copyOf(tableBuilder);
    }

    private static void addToTable(Table<String, String, List<Rule>> table, DefaultRule r) {
        if (r.internalKey() == null) {
            return;
        }

        List<Rule> ruleList = table.get(r.key().repository(), r.internalKey());

        if (ruleList == null) {
            ruleList = new LinkedList<>();
        }

        ruleList.add(r);
        table.put(r.key().repository(), r.internalKey(), ruleList);
    }

    @Override
    public Rule find(RuleKey ruleKey) {
        List<Rule> rules = rulesByRepository.get(ruleKey.repository());
        for (Rule rule : rules) {
            if (StringUtils.equals(rule.key().rule(), ruleKey.rule())) {
                return rule;
            }
        }
        return null;
    }

    @Override
    public Collection<Rule> findAll() {
        return rulesByRepository.values();
    }

    @Override
    public Collection<Rule> findByRepository(String repository) {
        return rulesByRepository.get(repository);
    }

    @Override
    public Collection<Rule> findByInternalKey(String repository, String internalKey) {
        List<Rule> rules = rulesByRepositoryAndInternalKey.get(repository, internalKey);

        return rules != null ? rules : Collections.<Rule>emptyList();
    }
}