| // Copyright 2015 The Bazel Authors. All rights reserved. |
| // |
| // Licensed 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 com.google.devtools.build.lib.query2; |
| |
| import com.google.common.base.Predicate; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.events.EventHandler; |
| import com.google.devtools.build.lib.packages.Target; |
| import com.google.devtools.build.lib.pkgcache.PackageProvider; |
| import com.google.devtools.build.lib.pkgcache.PathPackageLocator; |
| import com.google.devtools.build.lib.pkgcache.TargetPatternEvaluator; |
| import com.google.devtools.build.lib.pkgcache.TransitivePackageLoader; |
| import com.google.devtools.build.lib.query2.engine.QueryEnvironment.QueryFunction; |
| import com.google.devtools.build.lib.query2.engine.QueryEnvironment.Setting; |
| import com.google.devtools.build.lib.util.Preconditions; |
| import com.google.devtools.build.skyframe.WalkableGraph.WalkableGraphFactory; |
| |
| import java.util.List; |
| import java.util.Set; |
| |
| import javax.annotation.Nullable; |
| |
| /** A factory that creates instances of {@code AbstractBlazeQueryEnvironment<Target>}. */ |
| public class QueryEnvironmentFactory { |
| /** Creates an appropriate {@link AbstractBlazeQueryEnvironment} based on the given options. */ |
| public AbstractBlazeQueryEnvironment<Target> create( |
| TransitivePackageLoader transitivePackageLoader, WalkableGraphFactory graphFactory, |
| PackageProvider packageProvider, |
| TargetPatternEvaluator targetPatternEvaluator, boolean keepGoing, boolean strictScope, |
| boolean orderedResults, List<String> universeScope, int loadingPhaseThreads, |
| Predicate<Label> labelFilter, |
| EventHandler eventHandler, Set<Setting> settings, Iterable<QueryFunction> functions, |
| @Nullable PathPackageLocator packagePath) { |
| Preconditions.checkNotNull(universeScope); |
| if (canUseSkyQuery(orderedResults, universeScope, packagePath)) { |
| return new SkyQueryEnvironment(keepGoing, strictScope, loadingPhaseThreads, labelFilter, |
| eventHandler, settings, functions, targetPatternEvaluator.getOffset(), graphFactory, |
| universeScope, packagePath); |
| } else { |
| return new BlazeQueryEnvironment(transitivePackageLoader, packageProvider, |
| targetPatternEvaluator, keepGoing, strictScope, loadingPhaseThreads, labelFilter, |
| eventHandler, settings, functions); |
| } |
| } |
| |
| protected static boolean canUseSkyQuery(boolean orderedResults, List<String> universeScope, |
| @Nullable PathPackageLocator packagePath) { |
| return !orderedResults && !universeScope.isEmpty() && packagePath != null; |
| } |
| } |
| |